TY - JOUR AU - Jali, Sandile AU - Mohan, Turup Pandurangan AU - Mwangi, Festus Maina AU - Kanny, Krishnan AU - Siracusa, Valentina AU - Alves, Luis TI - A Review on Barrier Properties of Cellulose/Clay Nanocomposite Polymers for Packaging Applications JF - POLYMERS J2 - POLYMERS-BASEL VL - 16 PY - 2024 IS - 1 PG - 21 SN - 2073-4360 DO - 10.3390/polym16010051 UR - https://m2.mtmt.hu/api/publication/34609018 ID - 34609018 AB - Packaging materials are used to protect consumer goods, such as food, drinks, cosmetics, healthcare items, and more, from harmful gases and physical and chemical damage during storage, distribution, and handling. Synthetic plastics are commonly used because they exhibit sufficient characteristics for packaging requirements, but their end lives result in environmental pollution, the depletion of landfill space, rising sea pollution, and more. These exist because of their poor biodegradability, limited recyclability, etc. There has been an increasing demand for replacing these polymers with bio-based biodegradable materials for a sustainable environment. Cellulosic nanomaterials have been proposed as a potential substitute in the preparation of packaging films. Nevertheless, their application is limited due to their poor properties, such as their barrier, thermal, and mechanical properties, to name a few. The barrier properties of materials play a pivotal role in extending and determining the shelf lives of packaged foods. Nanofillers have been used to enhance the barrier properties. This article reviews the literature on the barrier properties of cellulose/clay nanocomposite polymers. Cellulose extraction stages such as pretreatment, bleaching, and nanoparticle isolation are outlined, followed by cellulose modification methods. Finally, a brief discussion on nanofillers is provided, followed by an extensive literature review on the barrier properties of cellulose/clay nanocomposite polymers. Although similar reviews have been presented, the use of modification processes applied to cellulose, clay, and final nanocomposites to enhance the barrier properties has not been reviewed. Therefore, this article focuses on this scope. LA - English DB - MTMT ER - TY - JOUR AU - Manso, Julen Ordenana AU - Nielsen, Martin B. AU - Moya, Eva Balaguer AU - Sandri, Juliana P. AU - Yamakawa, Celina K. AU - Mussatto, Solange I. TI - Intensification of corn fiber saccharification using a tailor made enzymatic cocktail JF - ENZYME AND MICROBIAL TECHNOLOGY J2 - ENZYME MICROB TECH VL - 172 PY - 2024 PG - 6 SN - 0141-0229 DO - 10.1016/j.enzmictec.2023.110347 UR - https://m2.mtmt.hu/api/publication/34609019 ID - 34609019 N1 - Funding Agency and Grant Number: Novo Nordisk Foundation (NNF) , Denmark [NNF20SA0066233] Funding text: This work was supported by the Novo Nordisk Foundation (NNF) , Denmark, grant number: NNF20SA0066233. The authors thank Ingre-dion (Brazil) and Novozymes (Denmark) for kindly providing the corn fiber and the enzyme Cellic (R) CTec2, respectively. AB - The transition from an economic model based on resource extraction to a more sustainable and circular economy requires the development of innovative methods to unlock the potential of raw materials such as lignocellulosic biomasses. Corn fiber differs from more traditional lignocellulosic biomasses due to its high starch content, which provides additional carbohydrates for fermentation-based biomanufacturing processes. Due to its unique chemical composition, this study focused on the development of a tailor made enzymatic cocktail for corn fiber saccharification into monosaccharides. Three commercially available hydrolytic enzymes (Cellic (R) CTec2, Pentopan (R) Mono BG, and Termamyl (R) 300 L) were combined to hydrolyze the polysaccharide structure of the three main carbohydrate fractions of corn fiber (cellulose, hemicellulose and starch, respectively). Prior to saccharification, corn fiber was submitted to a mild hydrothermal pretreatment (30 min at 100 degrees C). Then, two experimental designs were used to render an enzymatic cocktail capable of providing efficient release of monosaccharides. Using 60 FPU/g DM of Cellic (R) CTec2 and 4.62 U/g DM of Termamyl (R) 300 L, without addition of Pentopan (R) Mono BG, resulted in the highest efficiencies for glucose and xylose release (66% and 30%, respectively). While higher enzyme dosages could enhance the saccharification efficiency, adding more enzymes would have a more pronounced effect on the overall process costs rather than in increasing the efficiency for monosaccharides release. The results revealed that the recalcitrance of corn fiber poses a problem for its full enzymatic degradation. This fact combined with the unique chemical composition of this material, justify the need for developing a tailor made enzymatic cocktail for its degradation. However, attention should also be given to the pretreatment step to reduce even more the recalcitrance of corn fiber and improve the performance of the tailored cocktail, as a consequence. LA - English DB - MTMT ER - TY - JOUR AU - Sundarsingh, T. Joseph Antony AU - Ameen, Fuad AU - Ranjitha, J. AU - Raghavan, Somasundaram AU - Shankar, Vijayalakshmi TI - Engineering microbes for sustainable biofuel production and extraction of lipids - Current research and future perspectives JF - FUEL J2 - FUEL VL - 355 PY - 2024 PG - 14 SN - 0016-2361 DO - 10.1016/j.fuel.2023.129532 UR - https://m2.mtmt.hu/api/publication/34278235 ID - 34278235 AB - Genetic engineering is also known as the modification of genes or manipulation of genes which involves a process to modify the DNA molecule from a specific organism which results in enhancing specific properties. The process of modification can be done either by insertion or removal of specific DNA segments or base pairs. Thus, the newly produced nucleic acid can be loaded or injected arbitrarily or to the specific target site of the genome. Artificially the species were genetically modified to produce a high yield. The energy demand is always increasing and there is always a need for alternate fuels. Researchers are recently focusing on the microbes for the production of various types of biofuels such as bioethanol, biobutanol and biodiesel. Especially genetically modified microbes possess the huge capability to enhance biofuel production. LA - English DB - MTMT ER - TY - JOUR AU - Vallecilla, Yepez L. AU - Bamaca, Saquic B. AU - Wilkins, M.R. TI - Comparison of hydrothermolysis and mild-alkaline pretreatment methods on enhancing succinic acid production from hydrolyzed corn fiber JF - ENZYME AND MICROBIAL TECHNOLOGY J2 - ENZYME MICROB TECH VL - 172 PY - 2024 SN - 0141-0229 DO - 10.1016/j.enzmictec.2023.110346 UR - https://m2.mtmt.hu/api/publication/34224562 ID - 34224562 N1 - Export Date: 27 October 2023 CODEN: EMTED Correspondence Address: Wilkins, M.R.; Department of Biological Systems Engineering, United States; email: mrwilkins@ksu.edu LA - English DB - MTMT ER - TY - JOUR AU - Boukid, Fatma TI - Corn (Zea mays L.) arabinoxylan to expand the portfolio of dietary fibers JF - FOOD BIOSCIENCE J2 - FOOD BIOSCI VL - 56 PY - 2023 PG - 11 SN - 2212-4292 DO - 10.1016/j.fbio.2023.103181 UR - https://m2.mtmt.hu/api/publication/34609020 ID - 34609020 AB - Soluble arabinoxylan, derived from Zea mays L. (corn), is a novel fiber that presents significant potential to enrich the range of dietary fibers available for human consumption. This review explores the composition, structure, and properties of soluble corn arabinoxylan, shedding light on its health benefits and advantageous functionalities in food products. As a prebiotic fiber, corn arabinoxylan selectively promotes the growth of beneficial gut microflora, leading to the production of short-chain fatty acids known for their positive influence on digestive health and immunity. Corn arabinoxylan is a valuable option for creating fiber-rich and more appealing food options. It also offers functional and nutritional benefits for various food formulations, particularly in low-fat or reduced-calorie products. As the scientific community explores its potential applications and health effects, corn arabinoxylan stands as an attractive addition to promote digestive wellness and enhance the overall nutritional profile of various food products. LA - English DB - MTMT ER - TY - JOUR AU - Cai, Zhixiang AU - Wei, Yue AU - Shi, Aimin AU - Zhong, Jian AU - Rao, Pingfan AU - Wang, Qiang AU - Zhang, Hongbin TI - Correlation between interfacial layer properties and physical stability of food emulsions: current trends, challenges, strategies, and further perspectives JF - ADVANCES IN COLLOID AND INTERFACE SCIENCE J2 - ADV COLLOID INTERFAC VL - 313 PY - 2023 PG - 35 SN - 0001-8686 DO - 10.1016/j.cis.2023.102863 UR - https://m2.mtmt.hu/api/publication/33891595 ID - 33891595 AB - Emulsions are thermodynamically unstable systems that tend to separate into two immiscible phases over time. The interfacial layer formed by the emulsifiers adsorbed at the oil-water interface plays an important role in the emulsion stability. The interfacial layer properties of emulsion droplets have been considered the cutting-in points that influence emulsion stability, a traditional motif of physical chemistry and colloid chemistry of particular significance in relation to the food science and technology sector. Although many attempts have shown that high interfacial viscoelasticity may contribute to long-term emulsion stability, a universal relation-ship for all cases between the interfacial layer features at the microscopic scale and the bulk physical stability of the emulsion at the macroscopic scale remains to be established. Not only that, but integrating the cognition from different scales of emulsions and establishing a unified single model to fill the gap in awareness between scales also remain challenging. In this review, we present a comprehensive overview of recent progress in the general science of emulsion stability with a peculiar focus on interfacial layer characteristics in relation to the formation and stabilization of food emulsions, where the natural origin and edible safety of emulsifiers and stabilizers are highly requested. This review begins with a general overview of the construction and destruction of interfacial layers in emulsions to highlight the most important physicochemical characteristics of interfacial layers (for-mation kinetics, surface load, interactions among adsorbed emulsifiers, thickness and structure, and shear and dilatational rheology), and their roles in controlling emulsion stability. Subsequently, the structural effects of a series of typically dietary emulsifiers (small-molecule surfactants,proteins, polysaccharides, pro-tein-polysaccharide complexes, and particles) on oil-water interfaces in food emulsions are emphasized. Finally, the main protocols developed for modifying the structural characteristics of adsorbed emulsifiers at multiple scales and improving the stability of emulsions are highlighted. Overall, this paper aims to comprehensively study the literature findings in the past decade and find out the commonality of multi-scale structures of emulsifiers, so as to deeply understand the common characteristics and emulsification stability behaviour of adsorption emulsifiers with different interfacial layer structures. It is difficult to say that there has been signif-icant progress in the underlying principles and technologies in the general science of emulsion stability over the last decade or two. However, the correlation between interfacial layer properties and physical stability of food emulsions promotes revealing the role of interfacial rheological properties in emulsion stability, providing guidance on controlling the bulk properties by tuning the interfacial layer functionality. LA - English DB - MTMT ER - TY - JOUR AU - Kaur, Prabhpreet AU - Bohidar, Himadri B. AU - Pfeffer, Frederick M. AU - Williams, Richard AU - Agrawal, Ruchi TI - A comparative assessment of biomass pretreatment methods for the sustainable industrial upscaling of rice straw into cellulose JF - CELLULOSE J2 - CELLULOSE VL - 30 PY - 2023 IS - 7 SP - 4247 EP - 4261 PG - 15 SN - 0969-0239 DO - 10.1007/s10570-023-05161-4 UR - https://m2.mtmt.hu/api/publication/33891594 ID - 33891594 AB - Prior to the bioconversion of low cost, renewable lignocellulosic residues such as rice straw into value added bio-products, their recalcitrant structure needs to be fractionated by using various pretreatment methods. This study is aimed at the comparison of pretreatment protocols that will enable more efficient degradation and conversion of lignocellulosic biomass into cellulose-rich fractions. In this study, the cellulose-rich fractions of rice straw were obtained using the following pretreatment methods: alkali pretreatment using 5% (w/w) NaOH at 121 degrees C for 1 h, alkali treatment followed by bleaching pretreatment using acidified NaClO2 at 75 degrees C for 30 min, organosolvent pretreatment using formic acid: ethanol (3:1) at 160 degrees C for 1 h and steam explosion pretreatment at 180 degrees C for 5 min. The compositional analysis showed that alkali pretreatment followed by bleaching had remarkable fractionation efficiency with an increase in the relative cellulose concentration from 37.2 to 64.3%. The organosolvent and steam explosion pretreatment methods are green alternatives for the fractionation of lignocellulosic components. However, in comparison to the alkali bleaching pretreatment, these methods are less efficient with a relative increase in cellulose concentration from 37.2% in untreated rice straw to 46.5 and 43.7% in organosolvent and steam explosion pretreatment, respectively. The pretreated rice straw fractions were then investigated on the basis of various physicochemical characterization techniques such as Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA). Further the economic feasibility of these pretreatment methods needs to be considered to estimate the related cost for technology transfer. This paper gives a comprehensive characteristic comparison of cellulose-rich variants obtained from the rice straw using different pretreatment methods along with the preliminary cost analyses indicating their potential economic feasibility. LA - English DB - MTMT ER - TY - JOUR AU - Kumar, Vikram AU - Singh, Pooja AU - Sharma, Jyoti AU - Saini, Sakshi AU - Sharma, Priyanka AU - Sharma, Asha TI - Rice straw management through biofuel, biochar, mushroom cultivation, and paper production to overcome environmental pollution in North India JF - WASTE DISPOSAL & SUSTAINABLE ENERGY J2 - WASTE DISPOSAL & SUSTAINABLE ENERGY PY - 2023 PG - 28 SN - 2524-7980 DO - 10.1007/s42768-023-00152-4 UR - https://m2.mtmt.hu/api/publication/34278233 ID - 34278233 AB - Rice is the prominent food grain required by more than half of the world's population to fulfill their nutritional demand. With the continuous growth in the population at the global level, rice production has also been elevated. However, high rice production also creates a new problem in waste management worldwide. Rice straw, generated after rice harvest, possesses meager nutritional value, due to which it is less preferred as fodder and burned in the field. Paddy burning is one of the major causes of air pollution, leading to lung, heart, eye, and skin-related diseases and even premature death. This stubble burning also decreases soil fertility. In this review article, we have discussed the various economic uses of paddy straw which will help to reduce air pollution through the decline in paddy straw burning. Biochar is produced from paddy straw, which can be mixed into the soil to restore fertility and reduce toxic metals' bioavailability. The generation of biofuels such as biobutanol, bioethanol, and biogas from rice straw with their mechanism of synthesis is also discussed in this article. Rice straw can also be utilized in the preparation of solid fuel. Along with this, mushroom cultivation in paddy straw houses is also described. Paddy straw can be used for the pulp and paper industries, which will help to reduce the tree dependence of these industries. Apart from this, a bibliometric analysis of the Scopus database on rice straw uses for the last 20 years was done, including a bibliographic keyword analysis to show published documents' trends. This review will give an elaborated overview of the alternative uses of rice straw with a quantitative analysis of air pollution caused by paddy straw burning. This review will also help to improve the current uses of paddy straw for industrial and commercial benefits to make it more economical. LA - English DB - MTMT ER - TY - JOUR AU - Zhang, Zhao AU - Besserer, Arnaud AU - Rose, Christophe AU - Brosse, Nicolas AU - Terrasson, Vincent AU - Guenin, Erwann TI - Microwave-Assisted Synthesis of Pd Nanoparticles into Wood Block (Pd@wood) as Efficient Catalyst for 4-Nitrophenol and Cr(VI) Reduction JF - NANOMATERIALS J2 - NANOMATERIALS-BASEL VL - 13 PY - 2023 IS - 17 PG - 12 SN - 2079-4991 DO - 10.3390/nano13172491 UR - https://m2.mtmt.hu/api/publication/34278234 ID - 34278234 AB - Palladium (Pd) nanoparticle catalysis has attracted increasing attention due to its efficient catalytic activity and its wide application in environmental protection and chemical synthesis. In this work, Pd nanoparticles (about 71 nm) were synthesized in aqueous solution by microwave-assisted thermal synthesis and immobilized in beech wood blocks as Pd@wood catalysts. The wood blocks were first hydrothermally treated with 10% NaOH solution to improve the internal structure and increase their porosity, thereby providing favorable attachment sites for the formed Pd nanoparticles. The stable deposition of Pd nanoparticle clusters on the internal channels of the wood blocks can be clearly observed. In addition, the catalytic performance of the prepared Pd@wood was investigated through two model reactions: the reduction of 4-nitrophenol and Cr(VI). The Pd@wood catalyst showed 95.4 g-1 s-1 M-1 of normalized rate constant knorm and 2.03 min-1 of the TOF, respectively. Furthermore, Pd nanoparticles are integrated into the internal structure of wood blocks by microwave-assisted thermal synthesis, which is an effective method for wood functionalization. It benefits metal nanoparticle catalysis in the synthesis of fine chemicals as well as in industrial wastewater treatment. LA - English DB - MTMT ER - TY - JOUR AU - Gao, Le AU - Zhang, Dongyuan AU - Wu, Xin TI - In Situ Corn Fiber Conversion for Ethanol Improvement by the Addition of a Novel Lignocellulolytic Enzyme Cocktail JF - JOURNAL OF FUNGI J2 - J FUNGI VL - 8 PY - 2022 IS - 3 PG - 10 SN - 2309-608X DO - 10.3390/jof8030221 UR - https://m2.mtmt.hu/api/publication/33002984 ID - 33002984 AB - Corn mashes have high-viscosity and high-sugar characteristics, which hinders yeast-fermentation efficiency and the ethanol yield increase. The excessive viscosity of corn mash is caused by the unutilized cellulose in corn kernel fiber. A novel lignocellulolytic enzymes cocktail with strong substrate specificity was prepared for high-viscosity, high-sugar corn mash. The in situ conversion of corn mashes with novel lignocellulolytic enzymes at the optimum cellulase dosage of 50 FPU/L resulted in about 12% increased ethanol concentration compared with the reference mash at different batch-fermentation scales. Adding the lignocellulolytic enzymes caused the greatest decrease in viscosity of corn mash and residual sugars by 40.9% and 56.3%, respectively. Simultaneously, the application of lignocellulolytic enzymes increased the value of the dried distiller's grain with solubles (DDGS) by increasing the protein content by 5.51%. The in situ conversion of cellulose can decrease the fermentation broth viscosity and improve the rheological property, thereby improving the ethanol yield. With the same amount of material, the application of the novel enzymes cocktail can enhance the ethanol yield by more than 12%. A quarter of the ethanol yield increase was due to the further hydrolysis of starch, while three quarters to cellulose. Thus, this technology will increase the net revenue of bioethanol industrialization. LA - English DB - MTMT ER - TY - JOUR AU - Guo, Yingjie AU - Huang, Jiamin AU - Xu, Nuo AU - Jia, Hexue AU - Li, Xuezhi AU - Zhao, Jian AU - Qu, Yinbo TI - A Detoxification-Free Process for Enhanced Ethanol Production From Corn Fiber Under Semi-Simultaneous Saccharification and Fermentation JF - FRONTIERS IN MICROBIOLOGY J2 - FRONT MICROBIOL VL - 13 PY - 2022 PG - 12 SN - 1664-302X DO - 10.3389/fmicb.2022.861918 UR - https://m2.mtmt.hu/api/publication/33002983 ID - 33002983 AB - Corn fiber, a by-product from the corn-processing industry, is an attractive feedstock for cellulosic ethanol because of its rich carbohydrate content (mainly residual starch, cellulose, and hemicellulose), abundant reserves, easy collection, and almost no transportation cost. However, the complex structure and components of corn fiber, especially hemicellulose, make it difficult to be effectively hydrolyzed into fermentable sugars through enzymatic hydrolysis. This study developed a simple and easy industrialized process without detoxification treatment for high-yield ethanol produced from corn fiber. Corn fiber was pretreated by dilute acid under the conditions optimized by Box-Behnken design (0.5% H2SO4 at 105 degrees C for 43 min), and 81.8% of total sugars, including glucose, xylose, and arabinose, could be recovered, then the mixture (solid and hydrolysates) was directly used for semi-simultaneous saccharification and fermentation without detoxification, and ethanol yield reached about 81% of the theoretical yield. LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiujuan AU - Cui, Haiyang AU - Qiao, Jie AU - Wang, Minghui AU - Yue, Guojun TI - An integrative approach enables high bioresource utilization and bioethanol production from whole stillage JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 343 PY - 2022 PG - 7 SN - 0960-8524 DO - 10.1016/j.biortech.2021.126153 UR - https://m2.mtmt.hu/api/publication/33002988 ID - 33002988 AB - Bioethanol is a major biofuel in industry and mainly produced from corn starch with the dry-mill process. However, one of the remaining challenges is how to economically and efficiently exploit the wasted co-products to further improve ethanol production and generate more valuable chemicals. Here, an integrative approach was developed to efficiently utilize the waste cake for ethanol production, accompanied by protein extraction for feed additives. A high-quality protein feed was produced by the ethanol-alkali extraction method (extraction rate up to 46.91%). Notably, by applying two-step chemoenzymatic strategy, the supernatant and solid recycling yield up to 4.1-, 3.8-, and 154-fold improvements of ethanol, glucose, and xylose production, respectively, comparing to non-pretreatment. Moreover, mass balance analysis found this approach significantly contributed 1.74-4.42% (5.96-15.11 kg/ton dry corn) increase of total ethanol production. The gained knowledge about process design holds the potential transferability for other sustainable biowaste management and bioethanol industry. LA - English DB - MTMT ER - TY - JOUR AU - Ran, Yi AU - Elsayed, Mahdy AU - Eraky, Mohamed AU - Wang Dianlong, DL AU - Ai, Ping TI - Sequential production of biomethane and bioethanol through the whole biorefining of rice straw: Analysis of structural properties and mass balance JF - BIOMASS CONVERSION AND BIOREFINERY J2 - BIOMASS CONV BIOREFINERY PY - 2022 PG - 13 SN - 2190-6815 DO - 10.1007/s13399-022-02548-4 UR - https://m2.mtmt.hu/api/publication/33002985 ID - 33002985 AB - This study demonstrates a new biorefinery approach for efficient conversion of rice straw into biomethane and bioethanol. The main objective of this study was to investigate the production of these two bioenergy products from rice straw through sequential anaerobic digestion (AD) and fermentation. The mesophilic AD and thermophilic AD of the rice straw were investigated for biogas production and digestate characterization. Mesophilic and thermophilic AD generated biogas yield of 236.8 and 275.8 L/kgVS, respectively. The mesophilic digestate fiber is better for sequential production of biomethane and bioethanol. Different acid and alkali pretreatments were investigated for the bioethanol production. Both alkali and acidic pretreatments degraded the lignocellulose; the alkali pretreatment was more effective than the acidic pretreatment. The changes in the lignocellulose biomass of the pretreated digestate were investigated by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The pretreatment with 3% NaOH for 6 h significantly increased the glucose conversion and achieved the highest ethanol production of 87.13 g/kg dry fiber. The sequential route of AD and fermentation of rice straw enhanced the total gross energy output rate to 1.468 GJ ton(-1) day(-1). The current research illustrates a revolutionary rice straw-to-energy strategy that will have a massive effect on the biofuel industry progress. LA - English DB - MTMT ER - TY - JOUR AU - Saravanan, A. AU - Senthil, Kumar P. AU - Jeevanantham, S. AU - Karishma, S. AU - Vo, D.-V.N. TI - Recent advances and sustainable development of biofuels production from lignocellulosic biomass JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 344 PY - 2022 SN - 0960-8524 DO - 10.1016/j.biortech.2021.126203 UR - https://m2.mtmt.hu/api/publication/32718107 ID - 32718107 N1 - Cited By :4 Export Date: 3 March 2022 CODEN: BIRTE Correspondence Address: Senthil Kumar, P.; Department of Chemical Engineering, India; email: senthilkumarp@ssn.edu.in Chemicals/CAS: lignin, 9005-53-2; lignocellulose, 11132-73-3; Biofuels; Lignin; lignocellulose AB - Many countries in the world are facing the demand for non-renewable fossil fuels because of overpopulation and economic boom. To reduce environmental pollution and zero carbon emission, the conversion of biomass into biofuels has paid better attention and is considered to be an innovative approach. A diverse raw material has been utilized as feedstock for the production of biofuel, depending on the availability of biomass, cost-effectiveness, and their geographic location. Among the different raw materials, lignocellulosic biomass has fascinated many researchers around the world. The current review discovers the potential application of lignocellulosic biomass for the production of biofuels. Various pretreatment methods have been widely used to increase the hydrolysis rate and accessibility of biomass. This review highlights recent advances in pretreatment methodologies for the enhanced production of biofuels. Detailed descriptions of the mechanism of biomass processing pathway, optimization, and modeling study have been discussed. © 2021 Elsevier Ltd LA - English DB - MTMT ER - TY - JOUR AU - Wang, Yuntao AU - Wang, Shasha AU - Li, Rui AU - Wang, Yu AU - Xiang, Qisen AU - Qiu, Si AU - Xu, Wei AU - Bai, Yanhong TI - Synergistic effect of corn fiber gum and chitosan in stabilization of oil in water emulsion JF - LWT-FOOD SCIENCE AND TECHNOLOGY J2 - LWT-FOOD SCI TECHNOL VL - 154 PY - 2022 PG - 9 SN - 0023-6438 DO - 10.1016/j.lwt.2021.112592 UR - https://m2.mtmt.hu/api/publication/33002989 ID - 33002989 AB - In recent years, emulsions stabilized by natural substances have attracted great interests of scientists. As both the emulsifying properties of chitosan (CH) and corn fiber gum (CFG) are poor, the different complex of CH and CFG were used to stabilize emulsion. It was found that the CH-CFG complex had significantly better emulsifying properties than CH or CFG at the same concentration, indicating they played a synergistic role in stabilizing oil in water emulsion. Cryo-SEM results showed that the CH-CFG complex formed a dense interfacial film on the surface of the oil droplets, forming a barrier that effectively prevented the flocculation of droplets, thus improving the stability of the emulsion. The changed surface zeta potential, interfacial activity and viscosity of CH-CFG complex compared with CH or CFG due to the interaction of CH and CFG contributed to the improved emulsifying properties of CH-CFG complex. LA - English DB - MTMT ER - TY - JOUR AU - Yagci, Sibel AU - Sutay Kocabas, Didem AU - Caliskan, Rukiye AU - Ozbek, Hatice Neval TI - Statistical investigation of the bioprocess conditions of alkali combined twin-screw extrusion pretreatment to enhance fractionation and enzymatic hydrolysis of bulgur bran JF - JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE J2 - J SCI FOOD AGR PY - 2022 PG - 10 SN - 0022-5142 DO - 10.1002/jsfa.11837 UR - https://m2.mtmt.hu/api/publication/33002986 ID - 33002986 AB - BACKGROUND Bulgur bran (BB) is a potential source for the production of value-added products such as fermentable sugars and xylooligosaccharides (XOs). In this study, alkali combined twin-screw extrusion pretreatment was performed and statistically optimized to enhance fractionation and enzymatic hydrolysis of BB. The pretreatment conditions (barrel temperature, screw speed and alkali impregnation) were optimized by Box-Behnken design (BBD) to obtain the highest hemicellulose separation from BB. The obtained fractions were analyzed for the production of fermentable sugars and XOs. RESULTS The results revealed that twin-screw extrusion of BB performed at 67 degrees C barrel temperature and 250 rpm screw speed after alkali impregnation at 0.02 g alkali g(-1) biomass concentration provided 40.4% higher hemicellulose separation yield compared to the untreated BB. Alkali combined twin-screw extrusion pretreatment increased the enzymatic hydrolysis yield of BB fourfold, whereas a 13-fold increase was achieved after the separation of hemicellulose from pretreated BB. Xylose (X1)-free xylobiose (X2) was the main product after xylanase hydrolysis of hemicellulose fraction. SEM images confirmed the morphological modifications in BB, which were in agreement with the enhanced fractionation performance and the higher enzymatic hydrolysis yield. CONCLUSION The results of this study suggested that pretreatment by alkali combined twin-screw extrusion followed by alkali extraction could be a reliable and effective process for fractionation of BB and production of fermentable sugars and XOs. (c) 2022 Society of Chemical Industry. LA - English DB - MTMT ER - TY - JOUR AU - Zhang, Weixin AU - Guo, Junqi AU - Wu, Xiaoxiao AU - Ren, Yajing AU - Li, Chunyan AU - Meng, Xiangfeng AU - Liu, Weifeng TI - Reformulating the Hydrolytic Enzyme Cocktail of Trichoderma reesei by Combining XYR1 Overexpression and Elimination of Four Major Cellulases to Improve Saccharification of Corn Fiber JF - JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY J2 - J AGR FOOD CHEM VL - 70 PY - 2022 IS - 1 SP - 211 EP - 222 PG - 12 SN - 0021-8561 DO - 10.1021/acs.jafc.1c05946 UR - https://m2.mtmt.hu/api/publication/33002987 ID - 33002987 AB - The industrial fungus Trichoderma reesei has an outstanding capability of secreting an enzyme cocktail comprising multiple plant biomass-degrading enzymes. Herein, the overexpression of XYR1, the master transactivator controlling (hemi)cellulase gene expression, was performed in T. reesei lacking four main cellulase-encoding genes. The resultant strain Delta 4celOExyr1 was able to produce a dramatically different profile of secretory proteins on soluble glucose or lactose compared with that of the wild-type T. reesei. The Delta 4celOExyr1 secretome included cellulases EGIII and BGLI as well as several hemicellulases and nonhydrolytic cellulose degradation-associated proteins that are not preferentially induced in the wild-type T. reesei strain. Delta 4celOExyr1 produced a significant amount of alpha-arabinofuranosidase I on lactose, and the crude enzyme cocktail of Delta 4celOExyr1 not only released a considerable quantity of glucose but also exhibited remarkable performance in the hydrolytic release of xylose, arabinose, and mannose from un-pretreated corn fiber. These results showed that the engineered T. reesei strain holds great potential for improving the saccharification efficiency of the hemicellulosic constituents within corn fiber. LA - English DB - MTMT ER - TY - JOUR AU - Ariaeenejad, Shohreh AU - Kavousi, Kaveh AU - Maleki, Morteza AU - Motamedi, Elaheh AU - Moosavi-Movahedi, Ali A. AU - Salekdeh, Ghasem Hosseini TI - Application of free and immobilized novel bifunctional biocatalyst in biotransformation of recalcitrant lignocellulosic biomass JF - CHEMOSPHERE J2 - CHEMOSPHERE VL - 285 PY - 2021 PG - 11 SN - 0045-6535 DO - 10.1016/j.chemosphere.2021.131412 UR - https://m2.mtmt.hu/api/publication/32391514 ID - 32391514 AB - Herein, an innovative, green, and practical biocatalyst was developed using conjugation of a novel bifunctional mannanase/xylanase biocatalyst (PersiManXyn1) to the modified cellulose nanocrystals (CNCs). Firstly, PersiManXyn1 was multi-stage in-silico screened from rumen macrobiota, and then cloned, expressed, and purified. Next, CNCs were synthesized from sugar beet pulp using enzymatic and acid hydrolysis processes, and then Fe3O4 NPs were anchored on their surface to produce magnetic CNCs (MCNCs). This hybrid was modified by dopamine providing DA/MCNCs nano-carrier. The bifunctional PersiManXyn1 demonstrated the superior hydrolysis activity on corn cob compared with the monofunctional xylanase enzyme (PersiXyn2). Moreover, the immobilization of PersiManXyn1 on the nano-carrier resulted in an improvement of the thermal stability, kinetic parameters (Kcat), and storage stability of the enzyme. Incorporation of the Fe3O4 NPs on the CNCs made magnetic nano-carrier with high magnetization value (25.8 emu/g) which exhibited rapid response toward the external magnetic fields. Hence, the immobilized biocatalyst could be easily separated from the products by a magnet, and reused up to 8 cycles with maintaining more than 50% of its original activity. The immobilized PersiManXyn1 generated 22.2%, 38.7%, and 35.1% more reducing sugars after 168 h hydrolysis of the sugar beet pulp, coffee waste, and rice straw, respectively, compared to the free enzyme. Based on the results, immobilization of the bifunctional PersiManXyn1 exhibited the superb performance of the enzyme to improve the conversion of the lignocellulosic wastes into high value products and develop the cost-competition biomass operations. LA - English DB - MTMT ER - TY - JOUR AU - Asim, Azmat Mehmood AU - Uroos, Maliha AU - Muhammad, Nawshad AU - Hallett, Jason P. TI - Production of Food-Grade Glucose from Rice and Wheat Residues Using a Biocompatible Ionic Liquid JF - ACS SUSTAINABLE CHEMISTRY & ENGINEERING J2 - ACS SUSTAIN CHEM ENG VL - 9 PY - 2021 IS - 24 SP - 8080 EP - 8089 PG - 10 SN - 2168-0485 DO - 10.1021/acssuschemeng.1c00022 UR - https://m2.mtmt.hu/api/publication/32391518 ID - 32391518 AB - The anticipated high future demand for food proteins has led to the advent of mycoprotein, which involves carbohydrate sugars as the primary carbon source. In this work, nonfood rice and wheat residues have been utilized to produce food-grade glucose using an ionic liquid. A biocompatible ionic liquid (IL) based on food-grade cholinium hydroxide and lysine has been evaluated for its potential to remove undesirable components such as, lignin and hemicellulose from rice and wheat straws. The cellulose pulp, thus obtained, was subsequently hydrolyzed into glucose by using food-grade enzymes. The optimum delignification efficiency of the IL is 87% at 120 degrees C after 8 h pretreatment. The optimum yield of food-grade sugar was 77% from cellulose pulp after processing at 100 degrees C for 8 h. The analysis of the pulp and lignin was made using compositional analysis, FT-IR, TGA, and SEM techniques, whereas glucose was quantified using HPLC. The food-grade glucose may be used in the food industry or pharmaceuticals, but this study aims at synthesizing mycoprotein in the future. LA - English DB - MTMT ER - TY - JOUR AU - Cai, Z.X. AU - Wei, Y. AU - Zhang, H.B. AU - Rao, P.F. AU - Wang, Q. TI - Holistic review of corn fiber gum: structure, properties, and potential applications JF - TRENDS IN FOOD SCIENCE & TECHNOLOGY J2 - TRENDS FOOD SCI TECH VL - 111 PY - 2021 SP - 756 EP - 770 PG - 15 SN - 0924-2244 DO - 10.1016/j.tifs.2021.03.034 UR - https://m2.mtmt.hu/api/publication/31930112 ID - 31930112 LA - English DB - MTMT ER - TY - JOUR AU - Das, Nisha AU - Jena, Pradip Kumar AU - Padhi, Diptymayee AU - Kumar Mohanty, Mahendra AU - Sahoo, Gyanaranjan TI - A comprehensive review of characterization, pretreatment and its applications on different lignocellulosic biomass for bioethanol production JF - BIOMASS CONVERSION AND BIOREFINERY J2 - BIOMASS CONV BIOREFINERY PY - 2021 PG - 25 SN - 2190-6815 DO - 10.1007/s13399-021-01294-3 UR - https://m2.mtmt.hu/api/publication/32313082 ID - 32313082 AB - With the draining of petroleum derivatives, expanding natural contamination issues, there has been rising enthusiasm for the examination of lignocellulosic biomass for an alternative fsource of energy. Characterization of various biomass, its intermediate, and products is a need for conversion of any biomass to biofuels. Chemical composition of lignocellulosic biomass is an essential point for developing potent pretreatment technologies to break its rigid structure, conversion of sugar by different enzymes mainly cellulose to glucose and even various microorganisms which can ferment sugars into bioethanol and other value-added green chemicals. In this present review work, the main focus is on the proximate and ultimate analysis of different feedstocks, and altered pretreatment techniques such as physical, chemical, physicochemical, and biological methods for bioethanol production have been addressed, which ultimately will help in overcoming the recalcitrance of lignocellulosic biomass by degrading the lignin fraction, breaking down of lignocellulose components, hydrolysis, and fermentation process. Recently, combined pretreatment is gaining popularity as it is more favorable and profitable for improving chemical yield and process of enzymatic hydrolysis of LBs, but it increases the cost of operation. Acid pretreatment, steam explosion, and hydrothermal processes all together show a comparatively high effect on degrading hemicelluloses fraction. Alkali, oxidative, and organosolv pretreatment are more efficient in removing and degrading of lignin portion. This present study will empower a better idea and knowledge of the available process with the upcoming advanced processes which would help to overcome the limitations and establish technology to facilitate the pretreatment methods to make an authentic concept of biorefinery. LA - English DB - MTMT ER - TY - JOUR AU - Fehér, Anikó AU - Bedő, Soma AU - Fehér, Csaba TI - Comparison of Enzymatic and Acidic Fractionation of Corn Fiber for Glucose-rich Hydrolysate and Bioethanol Production by Candida boidinii JF - PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING J2 - PERIOD POLYTECH CHEM ENG VL - 65 PY - 2021 IS - 3 SP - 320 EP - 330 PG - 11 SN - 0324-5853 DO - 10.3311/PPch.17431 UR - https://m2.mtmt.hu/api/publication/32030607 ID - 32030607 N1 - Export Date: 7 February 2022 Correspondence Address: Fehér, C.; Biorefinery Research Group, Műegyetem rakpart 3, Hungary; email: feher.csaba@vbk.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Gao, Liwei AU - He, Xin AU - Guo, Yingjie AU - Wu, Zehua AU - Zhao, Jian AU - Liu, Guodong AU - Qu, Yinbo TI - Combinatorial Engineering of Transcriptional Activators in Penicillium oxalicum for Improved Production of Corn-Fiber-Degrading Enzymes JF - JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY J2 - J AGR FOOD CHEM VL - 69 PY - 2021 IS - 8 SP - 2539 EP - 2548 PG - 10 SN - 0021-8561 DO - 10.1021/acs.jafc.0c07659 UR - https://m2.mtmt.hu/api/publication/32362546 ID - 32362546 AB - Enzymatic conversion of corn fiber to fermentable sugars is beneficial to improving the economic efficiency of corn processing. In this work, the filamentous fungus Penicillium oxalicum was found to secrete enzymes for efficient saccharification of un-pretreated corn fiber. Separate engineering of transcriptional activators CIrB, XInR, and AraR led to enhanced production of different sets of lignocellulolytic enzymes. Particularly, the enzymes produced by XInR- and AraR-engineered strains showed a synergistic effect in corn fiber saccharification. Combinatorial engineering of all three activators generated a strain MCAX with 3.1-to 51.0-fold increases in lignocellulolytic enzyme production compared with the parent strain. In addition, the enzymes of strain MCAX released significantly more fermentable sugars from corn fiber than those of the parent strain at the same protein dosage. The results suggest that this strain has potential for on-site production of enzymes for corn fiber saccharification. LA - English DB - MTMT ER - TY - JOUR AU - Granados-Arvizu, J. A. AU - Melo-Sabogal, D. V AU - Amaro-Reyes, A. AU - Gracida-Rodriguez, J. N. AU - Garcia-Almendarez, B. E. AU - Castano-Tostado, E. AU - Regalado-Gonzalez, C. TI - Corn pericarp pretreated with dilute acid: bioconversion of sugars in the liquid fraction to ethanol and studies on enzymatic hydrolysis of the solid fraction JF - BIOMASS CONVERSION AND BIOREFINERY J2 - BIOMASS CONV BIOREFINERY VL - 11 PY - 2021 IS - 4 SP - 1343 EP - 1351 PG - 9 SN - 2190-6815 DO - 10.1007/s13399-019-00534-x UR - https://m2.mtmt.hu/api/publication/32391513 ID - 32391513 AB - Corn pericarp (CP) results from wet milling of the corn industry. It is an abundant agro-industrial byproduct in Mexico, with potential use as sugars source to obtain ethanol and other economically relevant chemicals. In this work, CP was pretreated with dilute sulfuric acid at 121 degrees C; using a 2(3) full factorial design, factors were sulfuric acid, reaction time, and CP concentration. After pretreatment, the capacity of activated charcoal to remove inhibitory compounds in the liquid fraction was studied. Then, the detoxified liquid fraction was fermented using Scheffersomyces stipitis, whereas the solid fraction was exposed to enzymatic hydrolysis by a commercial cellulase (Cellic (R) CTec2). The most promising pretreatments utilized 2% (v/v) sulfuric acid, 20% (w/v) of CP, and 30 min reaction time producing 109.38 +/- 6.73 g/L reducing sugars. The solid fraction obtained from CP pretreatment resulted in cellulose conversion up to 85.60% +/- 1.87% after 94 h, significantly higher than conversion achieved using untreated CP of 32.54% +/- 5.58%. The detoxification process allowed yeast fermentation to reach ethanol yields (g ethanol/g consumed substrate) between 0.09 +/- 0.02 and 0.29 +/- 0.006. S. stipitis was able to produce between 4.62 +/- 1.73 and 14.22 +/- 0.98 g/L of ethanol from the hydrolyzed liquid fraction. The dilute acid pretreatment on CP produced a solid fraction, which upon enzymatic treatment caused high cellulose conversion into reducing sugars. Additionally, the fermentability of the sugars present in the liquid fraction was increased after the detoxification process. Thus, CP is a material that shows good potential to obtain value-added products such as ethanol. LA - English DB - MTMT ER - TY - JOUR AU - Gunes, B. AU - Stokes, J. AU - Davis, P. AU - Connolly, C. AU - Lawler, J. TI - Modelling and optimisation of the biogas yield after hybrid alkaline-ultrasonic pre-treatment in the early stages of anaerobic digestion of pot ale to shorten the processing time JF - PROCESS SAFETY AND ENVIRONMENTAL PROTECTION J2 - PROCESS SAF ENVIRON VL - 146 PY - 2021 SP - 43 EP - 53 PG - 11 SN - 0957-5820 DO - 10.1016/j.psep.2020.08.013 UR - https://m2.mtmt.hu/api/publication/32391516 ID - 32391516 AB - Whiskey distillery wastewater (pot ale) is classified as a high organic content wastewater and its year-long large discharge volume makes it a suitable substrate for anaerobic digestion from environmental and economical perspectives. Prior to anaerobic digestion, a hybrid alkaline-ultrasonic pre-treatment was performed in order to alter the lignocellulosic structure of the pot ale. Effects of alkaline dose (0-3 M NaOH), amplitude ratio (40-100%) and exposure time (1-3h) of ultrasonic pre-treatment on CH4, CO2 and H2S generation within the first 2 days of anaerobic digestion were investigated at a lab scale batch reactor. Response surface methodology (RSM) was adopted as a process modelling and optimisation tool. Significant enhancements in the hydrolysis rate constant and methane yield were achieved in the early stages of digestion. The highest methane yield of the first 2 days digestion was 333 +/- 5 mL/g VS after implementation of ultrasonic pre-treatment at 70 % amplitude for 3 h in isolation leading to 48 +/- 4.4 and 56 +/- 3.5 % reduction in chemical and biological oxygen demand respectively. The optimum pre-treatment conditions according to combined numerical and graphical optimisation, to maximise CH4 yield while minimising the H2S generation was identified as 40 % amplitude ratio, 1-2.5 h exposure time and 0 - 0.6 M NaOH. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of Institution of Chemical Engineers. LA - English DB - MTMT ER - TY - JOUR AU - Juneja, Ankita AU - Noordam, Bert AU - Pel, Herman AU - Basu, Rahul AU - Appeldoorn, Maaike AU - Singh, Vijay TI - Optimization of two-stage pretreatment for maximizing ethanol production in 1.5G technology JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 320 PY - 2021 PG - 9 SN - 0960-8524 DO - 10.1016/j.biortech.2020.124380 UR - https://m2.mtmt.hu/api/publication/32391520 ID - 32391520 AB - Two-stage pretreatment conditions were optimized to convert corn fiber, separated from whole stillage in a corn dry grind ethanol plant, to fermentable sugars via hydrolysis. Liquid hot water pretreatment (25% solids) at 180 degrees C for 10 min, followed by three cycles of disk milling, provided maximum glucose, xylose, and arabinose yields of 88.5%, 41.0%, and 30.4% respectively after hydrolysis with Cellulase I. The glucose, xylose, and arabinose yields with Cellulase II at optimum conditions were 94.9%, 74.2%, and 66.3%, respectively. SSF of corn fiber using engineered yeast, with both Cellulase I and II, provided maximum ethanol concentrations of 2.13% and 2.73% (v/v). The protein content in the residual solid after fermentation was 47.95% and 52.05% for Cellulase I and II, respectively. This technology provides additional ethanol in a dry grind plant by converting corn fiber into ethanol and increases the protein content of DDGS, thereby improving the quality. LA - English DB - MTMT ER - TY - JOUR AU - Kang, Ya-Ru AU - Su, Yao AU - Wang, Jing AU - Chu, Yi-Xuan AU - Tian, Guangming AU - He, Ruo TI - Effects of different pretreatment methods on biogas production and microbial community in anaerobic digestion of wheat straw JF - ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH J2 - ENVIRON SCI POLLUT R VL - 28 PY - 2021 IS - 37 SP - 51772 EP - 51785 PG - 14 SN - 0944-1344 DO - 10.1007/s11356-021-14296-5 UR - https://m2.mtmt.hu/api/publication/32391515 ID - 32391515 AB - The pretreatment of wheat straw has been recognized to be an essential step prior to anaerobic digestion, owing to the high abundance of lignocellulosic materials. In order to choose economical and effective techniques for the disposal of wheat straw, effects of five pretreatment methods including acid, alkali, co-pretreatment of acid and alkali, CaO2, and liquid digestate of municipal sewage sludge on anaerobic digestion of wheat straw were investigated by analyzing biogas production and organic matter degradation in the study. The results showed that among these pretreatment methods, the methane yield was highest in the liquid digestate pretreated-wheat straw with 112.6 mL g(TS)(-1), followed by the acid, alkali, and CaO2 pretreatments, and the lowest was observed in the co-pretreatment of acid and alkali. Illumina MiSeq sequencing of the microbial communities in the anaerobic digesters revealed that the genera Ruminiclostridium including Ruminiclostridium and Ruminiclostridium 1, Hydrogenispora, and Capriciproducens were the main hydrolytic bacteria, acidogenic bacteria, and acetogenic bacteria, respectively, in the anaerobic digesters. Capriciproducens and Hydrogenispora dominated in the first and the later stages, respectively, in the anaerobic digesters, which could work as indicators of the anaerobic co-digestion stage of sludge and wheat straw. The total solid and SO42--S contents of the solid digestate and the NH4+-N concentration of the liquid digestate had a significant influence on the microbial community in the digesters. These findings indicated that liquid digestate pretreatment was a potential option to improve the anaerobic digestion of wheat straw, due to the low cost without additional chemical agents. LA - English DB - MTMT ER - TY - JOUR AU - Liu, Shenglong AU - Liu, Huan AU - Shen, Chen AU - Fang, Wei AU - Xiao, Yazhong AU - Fang, Zemin TI - Comparison of performances of different fungal laccases in delignification and detoxification of alkali-pretreated corncob for bioethanol production JF - JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY J2 - J IND MICROBIOL BIOT VL - 48 PY - 2021 IS - 1-2 PG - 9 SN - 1367-5435 DO - 10.1093/jimb/kuab013 UR - https://m2.mtmt.hu/api/publication/32391519 ID - 32391519 AB - The performance of the alkaline fungal laccase PIE5 (pH 8.5) in the delignification and detoxification of alkali-pretreated corncob to produce bioethanol was evaluated and compared with that of the neutral counterpart (rLcc9, 6.5), with the acidic laccase rLacA (4.0) was used as an independent control. Treatment with the three laccases facilitated bioethanol production compared with their respective controls. The lignin contents of alkali-pretreated corncob reduced from 4.06%, 5.06%, and 7.80% to 3.44%, 3.95%, and 5.03%, after PIE5, rLcc9, and rLacA treatment, respectively. However, the performances of the laccases were in the order rLacA > rLcc9 > PIE5 in terms of decreasing total phenol concentration (0.18, 0.36, and 0.67 g/l), boosting ethanol concentration (8.02, 7.51, and 7.31 g/l), and volumetric ethanol productivity (1.34, 0.94, and 0.91 g/l hr), and shortening overall fermentation time. Our results would inform future attempts to improve laccases for ethanol production. Furthermore, based on our data and the fact that additional procedures, such as pH adjustment, are needed during neutral/alkaline fungal laccase treatment, we suggest acidic fungal laccases may be a better choice than neutral/alkaline fungal laccases in bioethanol production. LA - English DB - MTMT ER - TY - JOUR AU - Ozturk, Oguz K. AU - Kaasgaard, Svend G. AU - Palmen, Lorena G. AU - Vidal, Bernardo C. AU - Hamaker, Bruce R. TI - Enzyme treatments on corn fiber from wet-milling process for increased starch and protein extraction JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 168 PY - 2021 PG - 11 SN - 0926-6690 DO - 10.1016/j.indcrop.2021.113622 UR - https://m2.mtmt.hu/api/publication/32391517 ID - 32391517 AB - Complete starch extraction has been a problem in the corn wet-milling, and here enzymes affecting different structures were used to provide a thorough understanding of the contribution of those structures to starch and protein retention for a way to achieve higher extraction rates. The combination of Frontia Fiberwash (R) (mix of cellulases and xylanases) and Olexa (R) (protease) led to an increase in starch (4.5 %) and protein (3.0 %) extraction. Enzymes changed secondary structure composition of proteins due to change in concentration of protein sub-fractions. The protein matrix around starch granules, the key factor for starch retention, was weakened with reducing agents/acids or ultrasound, which better separated starch and protein bodies. Chemicals led to 3.3-5.4 % and 0.7-1.7 % increase in starch and protein extraction, respectively, whereas an ultrasound treatment resulted in 2.2 % and 0.6 % increase. Overall, the study showed starch granules and protein bodies can be freed from wet-milled fiber fraction leading to higher extraction rate when the protein matrix is loosened. LA - English DB - MTMT ER - TY - JOUR AU - Wongfaed, N. AU - Kongjan, P. AU - Suksong, W. AU - Prasertsan, P. AU - O-Thong, S. TI - Strategies for recovery of imbalanced full-scale biogas reactor feeding with palm oil mill effluent JF - PEERJ J2 - PEERJ VL - 9 PY - 2021 SN - 2167-8359 DO - 10.7717/peerj.10592 UR - https://m2.mtmt.hu/api/publication/32001736 ID - 32001736 N1 - Export Date: 6 May 2021 Correspondence Address: O-Thong, S.; Biotechnology Program, Thailand; email: sompong.o@tsu.ac.th AB - Background. Full-scale biogas production from palm oil mill effluent (POME) was inhibited by low pH and highly volatile fatty acid (VFA) accumulation. Three strategies were investigated for recovering the anaerobic digestion (AD) imbalance on biogas production, namely the dilution method (tap water vs. biogas effluent), pH adjustment method (NaOH, NaHCO3, Ca(OH)2, oil palm ash), and bioaugmentation (active methane-producing sludge) method. The highly economical and feasible method was selected and validated in a full-scale application. Results. The inhibited sludge from a full-scale biogas reactor could be recovered within 30–36 days by employing various strategies. Dilution of the inhibited sludge with biogas effluent at a ratio of 8:2, pH adjustment with 0.14% w/v NaOH, and 8.0% w/v oil palm ash were considered to be more economically feasible than other strategies tested (dilution with tap water, or pH adjustment with 0.50% w/v Ca(OH)2, or 1.25% NaHCO3 and bioaugmentation) with a recovery time of 30–36 days. The recovered biogas reactor exhibited a 35–83% higher methane yield than self-recovery, with a significantly increased hydrolysis constant (kH) and specific methanogenic activity (SMA). The population of Clostridium sp., Bacillus sp., and Methanosarcina sp. increased in the recovered sludge. The imbalanced full-scale hybrid cover lagoon reactor was recovered within 15 days by dilution with biogas effluent at a ratio of 8:2 and a better result than the lab-scale test (36 days). Conclusion. Dilution of the inhibited sludge with biogas effluent could recover the imbalance of the full-scale POME-biogas reactor with economically feasible and high biogas production performance. Copyright 2021 Wongfaed et al. LA - English DB - MTMT ER - TY - JOUR AU - Zhang, Bin AU - Zhan, Baorui AU - Bao, Jie TI - Reframing biorefinery processing chain of corn fiber for cellulosic ethanol production JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 170 PY - 2021 PG - 7 SN - 0926-6690 DO - 10.1016/j.indcrop.2021.113791 UR - https://m2.mtmt.hu/api/publication/32362726 ID - 32362726 AB - Corn fiber is a byproduct of wet milling of corn grains with high hemicellulose content. Hemicellulose is only partially hydrolyzed in acid pretreatment and the complete hydrolysis occurs in the subsequent enzymatic hydrolysis. In the regular biorefinery chain of lignocellulose, the detoxification of toxic inhibitors is conducted immediately after pretreatment. When this process arrangement applies to corn fiber, acetic acid is accumulated to high level because of acetyl group release from residual hemicellulose. This study re-framed the biorefinery chain by conducting enzymatic hydrolysis before biodetoxification to completely release acetic acid from hemicellulose in corn fiber. Then the biodetoxification was followed immediately to degrade acetic acid, furfural and 5-hydroxymethylfurfural with the minimum loss of glucose and xylose. The improved ethanol production (70.2 g/L, or 8.9 % by v/v) was obtained by the re-framed chain of corn fiber biorefining. This study provided a practical approach for utilization of corn fiber for biofuel production. LA - English DB - MTMT ER - TY - JOUR AU - Zhao, Zhezhen AU - Zhang, Jiaming AU - Li, Yiming AU - Li, Fei AU - Liu, Ping TI - Effects and Mechanisms of Alkali Recycling and Ozone Recycling on Enzymatic Conversion in Alkali Combined with Ozone Pretreatment of Corn Stover JF - APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY J2 - APPL BIOCHEM BIOTECH VL - 193 PY - 2021 IS - 1 SP - 281 EP - 295 PG - 15 SN - 0273-2289 DO - 10.1007/s12010-020-03425-4 UR - https://m2.mtmt.hu/api/publication/31705711 ID - 31705711 AB - In order to minimize waste liquor, save resources, and reduce costs, the effects of alkali recycling and ozone recycling on enzymatic conversion in alkali combined with ozone pretreatment of corn stover and the mechanism were studied. The results showed that as the number of cycles of alkali/ozone filtrate increased, the enzymatic conversion and the loss of reducing sugars showed a downward trend. It was indicated that the ability of alkali to damage lignocellulosic decreased with an increasing number of alkali circulation and the accumulation of lignin degradation products generated during ozonolysis inhibited enzymatic conversion. When the ozone filtrate was recovered and used for hydrolysis directly, the enzymatic conversion rates were basically the same compared with the first self-circulation of ozone filtrate, and no sewage was discharged. In conclusion, the optimal circulating pretreatment was four times alkali circulation and ozone filtrate was used as an enzymolysis liquid directly, and the conversion rates of cellulose and hemicellulose were 85.96% and 34.26%, respectively, saving 44% alkali consumption at the same time. This paper provided the theoretical basis for the development of lignocellulose pretreatment technology with low cost, high efficiency, and high conversion rate. LA - English DB - MTMT ER - TY - JOUR AU - Ashoor, Selim AU - Sukumaran, Rajeev K. TI - Mild alkaline pretreatment can achieve high hydrolytic and fermentation efficiencies for rice straw conversion to bioethanol JF - PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY J2 - PREP BIOCHEM BIOTECH PY - 2020 PG - 6 SN - 1082-6068 DO - 10.1080/10826068.2020.1744007 UR - https://m2.mtmt.hu/api/publication/31447323 ID - 31447323 AB - Mild alkaline pretreatment was evaluated as a strategy for effective lignin removal and hydrolysis of rice straw. The pretreatment efficiency of different NaOH concentrations (0.5, 1.0, 1.5 or 2.0% w/w) was assessed. Rice straw (RS) pretreated with 1.5% NaOH achieved better sugar yield compared to other concentrations used. A cellulose conversion efficiency of 91% (45.84 mg/ml glucose release) was attained from 1.5% NaOH pretreated rice straw (PRS), whereas 1% NaOH pretreated rice straw yielded 35.10 mg/ml of glucose corresponding to a cellulose conversion efficiency of 73.81%. The ethanol production from 1% and 1.5% NaOH pretreated RS hydrolysates was similar at similar to 3.3% (w/v), corresponding to a fermentation efficiency of 86%. The non-detoxified hydrolysate was fermented using the novel yeast strain Saccharomyces cerevisiae RPP-03O without any additional supplementation of nutrients. LA - English DB - MTMT ER - TY - JOUR AU - Kaur, Pardeep AU - Taggar, Monica Sachdeva AU - Kaur, Jaspreet TI - CELLULOLYTIC MICROORGANISMS: DIVERSITY AND ROLE IN CONVERSION OF RICE STRAW TO BIOETHANOL JF - CELLULOSE CHEMISTRY AND TECHNOLOGY J2 - CELL CHEM TECHNOL VL - 54 PY - 2020 IS - 7-8 SP - 613 EP - 634 PG - 22 SN - 0576-9787 UR - https://m2.mtmt.hu/api/publication/31705708 ID - 31705708 AB - Lignocellulosic biomass is considered to be an inexhaustible biopolymer known to mankind. For the successful exploitation of lignocellulosic biomass, such as rice straw, as a substrate for the production of industrially significant value-added products, such as bioethanol, its conversion into fermentable sugars, sugar acids and phenolics is the most imperative step. Enzymatic hydrolysis of lignocelluloses is performed by cellulases, a complex enzyme system comprising endo 1,4-beta-D glucanase, exo-1,4-beta-D-glucanase and beta-D-glucosidase. Cellulases are produced by a diverse range of microorganisms, including bacteria, fungi, actinomycetes, algae, insects and mollusks. However, the cost of cellulase is a major economic barrier for ethanol production. To economize the ethanol production process for its successful utilization at the industrial scale, genetic improvement of microorganisms, and other industrially relevant strategies of enzyme production and recycling need to be adopted. LA - English DB - MTMT ER - TY - JOUR AU - Li, Mengxing AU - Wilkins, Mark R. TI - Fed-batch polyhydroxybutyrate production byParaburkholderia saccharifrom a ternary mixture of glucose, xylose and arabinose JF - BIOPROCESS AND BIOSYSTEMS ENGINEERING J2 - BIOPROC BIOSYST ENG PY - 2020 PG - 9 SN - 1615-7591 DO - 10.1007/s00449-020-02434-1 UR - https://m2.mtmt.hu/api/publication/31705709 ID - 31705709 AB - Polyhydroxybutyrate (PHB) is a biodegradable bioplastic that is comparable with many petroleum-based plastics in terms of mechanical properties and is highly biocompatible. Lignocellulosic biomass conversion into PHB can increase profit and add sustainability. Glucose, xylose and arabinose are the main monomer sugars derived from upstream lignocellulosic biomass processing. The sugar mixture ratios may vary greatly depending on the pretreatment and enzymatic hydrolysis conditions.Paraburkholderia sacchariDSM 17165 is a bacterium strain that can convert all three sugars into PHB. In this study, fed-batch mode was applied to produce PHB on three sugar mixtures (glucose:xylose:arabinose = 4:2:1, 2:2:1, 1:2:1). The highest PHB concentration produced was 67 g/L for 4:2:1 mixture at 41 h corresponding to an accumulation of 77% of cell dry weight as PHB. Corresponding sugar conversion efficiency and productivity were 0.33 g PHB/g sugar consumed and 1.6 g/L/h, respectively. The results provide references for process control to maximize PHB production from real sugar streams derived from corn fibre. LA - English DB - MTMT ER - TY - JOUR AU - Marques, Gisela AU - Rencoret, Jorge AU - Gutierrez, Ana AU - del Rio, Jose C. TI - Lipophilic compounds from maize fiber and rice husk residues - An abundant and inexpensive source of valuable phytochemicals JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 146 PY - 2020 PG - 8 SN - 0926-6690 DO - 10.1016/j.indcrop.2020.112203 UR - https://m2.mtmt.hu/api/publication/31447326 ID - 31447326 AB - Maize (Zea mays L.) fibers and rice (Oryza sativa L.) husks are abundant and low cost by-products generated during grain milling. In this work, the composition of the lipophilic compounds present in these materials, which accounted for 4.1 % in maize fibers and 2.2 % in rice husks, was thoroughly studied by GC-MS. The most abundant lipophilic compounds identified in these residues were n-fatty acids and acylglycerols (mono-, di-, and triglycerides), that altogether accounts for up to 88 % of all extractives in maize fibers and up to 95 % in rice husks. Steroid compounds, including free and esterified sterols, hydrocarbons, and ketones were identified in both samples, being present in significant amounts in maize fibers. Tocopherols were also present in both cereal by-products, albeit in lower amounts, with alpha-tocopherol being the most abundant one. Minor amounts of n-fatty alcohols and high molecular esters were also found in rice husks. Maize fibers and rice husks can, therefore, be potential feedstocks to obtain valuable phytochemicals of diverse industrial interest. LA - English DB - MTMT ER - TY - JOUR AU - Prasad, Shiv AU - Kumar, Sandeep AU - Yadav, Krishna Kumar AU - Choudhry, Jairam AU - Kamyab, Hesam AU - Bach, Quang-Vu AU - Sheetal, K. R. AU - Kannojiya, Sudha AU - Gupta, Neha TI - Screening and evaluation of cellulytic fungal strains for saccharification and bioethanol production from rice residue JF - ENERGY J2 - ENERGY VL - 190 PY - 2020 PG - 8 SN - 0360-5442 DO - 10.1016/j.energy.2019.116422 UR - https://m2.mtmt.hu/api/publication/31447329 ID - 31447329 AB - In this study, microwave-assisted alkali and acid pretreated rice straw were used to improve fermentable sugar yield by enzymatic saccharification (ES) employing cellulolytic fungal strains and subsequent bioethanol production by using fermenting yeast. The cellulolytic fungal strains Trichoderma reesei NCIM 1052, 1186, 992, T. reesei ITCC 4025, 6413, Aspergillus niger ITCC 302, A. acculeatus ITCC 5078, A. fumigates ITCC 4768 and Fusarium Solani ITCC 6397 were used for enzymatic saccharification (ES) of acid/alkali pretreated rice straw to optimize the sugar recovery. T. reesei NCIM 1052 was found superior as compared to the other fungal strains in terms of FPase, CMCase activities, and reducing sugars yield from pretreated rice straw. The strains of Saccharomyces cerevisiae NCIM 3186, and Pichia stipitis NCIM 3499 were used for subsequent fermentation to produce bioethanol. The saccharification of alkali pretreated rice straw (2% v/w NaOH) by T. reesei NCIM 1052 resulted in the highest fermentable sugar yield (55.6 g/l) and ultimately, the higher ethanol concentration after 72 h of fermentation with P. stipitis NCIM 3499 (25.3 g/L) as compared to other yeast strains. This study also exhibits the high potential for economic generation of ethanol from rice straw. (C) 2019 Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Yang, Xiao-Li AU - Xu, Jia-Ying AU - Song, Hai-Liang AU - Wang, Xiao AU - Li, Tao TI - Enhanced removal of antibiotics in wastewater by membrane bioreactor with addition of rice straw JF - INTERNATIONAL BIODETERIORATION & BIODEGRADATION J2 - INT BIODETER BIODEGR VL - 148 PY - 2020 PG - 6 SN - 0964-8305 DO - 10.1016/j.ibiod.2019.104868 UR - https://m2.mtmt.hu/api/publication/31447327 ID - 31447327 AB - Antibiotics have been regarded as new emerging micro-pollutants due to their relatively stable structure and resistance to biodegradation. Rice straw, as a natural environmentally friendly biological carrier and available solid carbon source, was effective in improving the performance of membrane bioreactor (MBR). Parallel experiments of conventional MBR and two composite MBRs with addition of rice straw (unmodified or modified) were conducted to investigate the removal and biodegradation mechanisms of antibiotics. The results showed that the removal efficiency of COD and NH4+-N was both high irrespective of adding rice straw or not, while TN removal increased from 24.55% in conventional MBR to 44.48% in unmodified straw-added MBR and upto 54.47% in modified straw-added MBR. The addition of rice straw also significantly improved the removal of trirhethoprim, with the removal of 40.82% in conventional MBR while 82.10% in unmodified straw-added MBR and 87.50% in modified straw-added MBR. However, the removal of sulfamethoxazole in three MBRs was so high that there were no obvious differences among the removal of 91.92%, 95.79% and 95.77%. Trimethoprim removal was achieved by both the nitrification co-metabolism and denitrification co-metabolism, while sulfamethoxazole was mainly biodegraded by nitrification co-metabolism. LA - English DB - MTMT ER - TY - JOUR AU - Zhang, Junhua AU - Qin, Yujie AU - Li, Kena AU - Wang, Jinye AU - Wang, Zhiwen TI - Structure characterization and inhibitory effect of lignin from the outer and inner layers of bamboo after alkali pretreatment JF - CELLULOSE J2 - CELLULOSE VL - 27 PY - 2020 IS - 10 SP - 5677 EP - 5688 PG - 12 SN - 0969-0239 DO - 10.1007/s10570-020-03205-7 UR - https://m2.mtmt.hu/api/publication/31447331 ID - 31447331 AB - In this work, structural changes and inhibitory effects of lignin from the outer and inner layers of bamboo after alkali pretreatment were investigated. The results revealed that the carbohydrates contents in lignin samples from bamboo outer and inner layers decreased from 22.2% and 21.4 to 10.1% and 10.4% by alkali pretreatment, respectively. Alkali pretreatment could increase the molecular polydispersity index and syringyl/guaiacyl ratio of lignin, decrease lignin molecular weights and cleave the esterified p-coumarate in bamboo lignin. Inhibitory effect of bamboo lignin on cellulose hydrolysis decreased after alkali pretreatment, which could be explained by the lower adsorption capacity of lignin toward cellulases after alkali pretreatment. These findings discovered the structure of alkali pretreated bamboo lignin and enhanced the understanding of the mechanism of alkali pretreatment in increasing enzymatic hydrolysis of bamboo. LA - English DB - MTMT ER - TY - JOUR AU - Zhao, Yong AU - Shakeel, Usama AU - Rehman, Muhammad Saif Ur AU - Li, Hongqiang AU - Xu, Xia AU - Xu, Jian TI - Lignin-carbohydrate complexes (LCCs) and its role in biorefinery JF - JOURNAL OF CLEANER PRODUCTION J2 - J CLEAN PROD VL - 253 PY - 2020 PG - 15 SN - 0959-6526 DO - 10.1016/j.jclepro.2020.120076 UR - https://m2.mtmt.hu/api/publication/31447325 ID - 31447325 AB - Although lignocellulosic biomass is traditionally considered to be composed of cellulose, hemicellulose, and lignin, each of these components does not exist individually. Structurally, they are chemically bonded to form lignin-carbohydrate complexes (LCC) instead of being simply physically attached. Thus, lignin-carbohydrate complexes actually define the original structure of lignocellulosic biomass and inherit a wide array of compositions and features. However, the role of lignin-carbohydrate complexes has neither been completely investigated nor understood in this respect. In this review, the basic structures of lignin-carbohydrate complexes, extraction methods, bonding patterns and their cleavage are briefly discussed. More efforts are put on the role of lignin-carbohydrate complexes in the extraction/ isolation of biopolymers and in the subsequent lignocellulosic biorefining processes. Finally, several design strategies for biomass pretreatment, biopolymer isolation, enzymatic hydrolysis etc. are proposed, and future research needs for industrial application of lignocellulosic biorefinery are explored. It is anticipated this review could provide both the fundamentals of LCC and its effect on the biomass utilization, in the meantime attract more scientists' attention on the basic research on LCC. (C) 2020 Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Girotto, Francesca AU - Kusch, Sigrid AU - Lavagnolo, Maria Cristina TI - BIOLOGICAL METABOLITES RECOVERY FROM BEVERAGE PRODUCTION SOLID RESIDUES THROUGH ACIDOGENIC FERMENTATION JF - DETRITUS J2 - DETRITUS VL - 5 PY - 2019 SP - 19 EP - 28 PG - 10 SN - 2611-4127 DO - 10.31025/2611-4135/2019.13770 UR - https://m2.mtmt.hu/api/publication/31058125 ID - 31058125 AB - Acidogenic fermentation was applied to evaluate the potential recovery of biological monomers as precursors in bio-plastic production. Three residual organic substrates from high-volume beverage sectors (coffee, orange juice, beer) were assessed: spent coffee grounds (SCG), orange peels (OP), and brewers' spent grains (BSG). Batch fermentation tests were set up. SCG and OP were studied as single substrates and combined to evaluate yields of target monomers (volatile fatty acids, ethanol, lactate) and to reveal interactions between the matrixes. NaOH pre-treatment was applied to SCG to enhance disruption of the lignocellulosic cell wall. BSG was studied without pre-treatment and following acid or alkaline pre-treatment, with acidogenic fermentation being initiated with two different initial pH values (7; 9). Acetogenic fermentation was achieved with all substrates, although with different yields of target monomers. In terms of total biological metabolite production, following alkaline pre-treatment, OP and BSG, both fermented at an initial pH 9, showed the best performance, yielding 62.6 g and 62.0 g target monomers per litre substrate. For all substrates, acetic and butyric acids were the most abundant products. In the case of OP fermentation, butyrate accounted for 57% (35.8 g/L) of the total. The BSG test with the highest total yield also achieved the highest acetate yield (36.7 g/L). The results confirm that OP and BSG should be considered a priority sustainable feedstock for the supply of biological monomers, particularly if polyhydroxyalkanoates are to be produced. SCG are better suited to aceto-oriented approaches, such as the production of polyvinyl acetate. LA - English DB - MTMT ER - TY - JOUR AU - Gunes, Burcu AU - Stokes, Joseph AU - Davis, Paul AU - Connolly, Cathal AU - Lawler, Jenny TI - Pre-treatments to enhance biogas yield and quality from anaerobic digestion of whiskey distillery and brewery wastes: A review JF - RENEWABLE & SUSTAINABLE ENERGY REVIEWS J2 - RENEW SUST ENERG REV VL - 113 PY - 2019 PG - 15 SN - 1364-0321 DO - 10.1016/j.rser.2019.109281 UR - https://m2.mtmt.hu/api/publication/30908218 ID - 30908218 N1 - School of Biotechnology and DCU Water Institute, Dublin City University, Dublin 9, Glasnevin, Ireland School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Glasnevin, Ireland School of Business and DCU Water Institute, Dublin City University, Dublin 9, Glasnevin, Ireland Alltech European Bioscience Centre, Summerhill Road, Co. Meath, Dunboyne, Ireland Cited By :16 Export Date: 6 May 2021 CODEN: RSERF Correspondence Address: Lawler, J.; School of Biotechnology and DCU Water Institute, Dublin 9, Ireland; email: jenny.lawler@dcu.ie AB - In order to encourage industrial growth based on sustainability, the replacement of fossil fuels with renewable sources has gained global importance. Anaerobic digestion (AD) fulfils the requirements for a sustainable alternative fuel, and is also an environmentally friendly waste treatment method. It requires less energy than other methods such as gasification or pyrolysis due to its low operating temperature. Whiskey distillery and brewery waste streams are classed as high strength organic wastes due to their high BOD/COD content, thus rendering them a suitable feedstock for anaerobic digestion. Due to large global alcohol production, millions of tonnes of solid and liquid waste is discharged annually, so the potential for waste-to-energy conversion can make anaerobic digestion an attractive treatment option for the waste streams of distilleries and breweries rather than diversion to landfill or incineration. However, these waste streams are lignocellulosic, containing high fractions of lignin and crystalline cellulose, meaning pre-treatments prior to anaerobic digestion can significantly enhance the biogas yield and organic matter degradation. Acid pre-treatment and enzymatic pre-treatment are particularly promising, with improvement in quality up to 74% CH4 for AD of spent grain, with 16% increase in biogas yield, and up to 87% reduction in COD. However, industrial application of pre-treatments prior to anaerobic digestion remains limited. This review collates the literature to date on pre-treatments applied prior to anaerobic digestion of whiskey distillery/brewery wastes as well as current industrial practices and different reactor configurations. A particular focus is placed on the impact of pre-treatments on biogas yield in order to highlight potential enhancements in biogas yields for industrial implications. LA - English DB - MTMT ER - TY - JOUR AU - Harchegani, Maryam Beygy AU - Nasirpour, Ali AU - Ahmadzadeh, Safoura AU - Keramat, Javad AU - Hamdami, Nasser TI - APPLICATION POSSIBILITY OF ELECTROHYDRODYNAMIC TECHNIQUE FOR CELLULOSE EXTRACTION FROM BAGASSE: OPTIMIZATION USING RESPONSE SURFACE METHODOLOGY JF - CELLULOSE CHEMISTRY AND TECHNOLOGY J2 - CELL CHEM TECHNOL VL - 53 PY - 2019 IS - 3-4 SP - 251 EP - 262 PG - 12 SN - 0576-9787 DO - 10.35812/CelluloseChemTechnol.2019.53.25 UR - https://m2.mtmt.hu/api/publication/31058128 ID - 31058128 AB - This study describes a promising alternative extraction process called electrohydrodynamic technique (EHD), used to extract cellulose from bagasse. The effects of EHD treatment time and heating time on cellulose extraction were investigated. The extraction conditions were then optimized using response surface methodology. The highest cellulose extraction yield was obtained when both independent variables were at their highest level (EHD: 2 h; heating: 3 h). A larger hydrodynamic size of cellulose was achieved under the optimum conditions, confirming the amorphous structure of cellulose created under the effect of EHD. Fourier-transform infrared spectroscopy was used to investigate the distribution of hydrogen bond types. The content of inter- and intra-molecular hydrogen bonds was altered when EHD was used for cellulose extraction. EHD significantly affected the composite-like structure of bagasse, which subsequently led to a higher cellulose extraction yield, and transition of crystalline to amorphous structure due to the disruption of the hydrogen bond network. LA - English DB - MTMT ER - TY - JOUR AU - Kurambhatti, Chinmay AU - Kumar, Deepak AU - Singh, Vijay TI - Impact of Fractionation Process on the Technical and Economic Viability of Corn Dry Grind Ethanol Process JF - PROCESSES J2 - PROCESSES VL - 7 PY - 2019 IS - 9 PG - 22 SN - 2227-9717 DO - 10.3390/pr7090578 UR - https://m2.mtmt.hu/api/publication/31058122 ID - 31058122 AB - Use of corn fractionation techniques in dry grind process increases the number of coproducts, enhances their quality and value, generates feedstock for cellulosic ethanol production and potentially increases profitability of the dry grind process. The aim of this study is to develop process simulation models for eight different wet and dry corn fractionation techniques recovering germ, pericarp fiber and/or endosperm fiber, and evaluate their techno-economic feasibility at the commercial scale. Ethanol yields for plants processing 1113.11 MT corn/day were 37.2 to 40 million gal for wet fractionation and 37.3 to 31.3 million gal for dry fractionation, compared to 40.2 million gal for conventional dry grind process. Capital costs were higher for wet fractionation processes ($92.85 to $97.38 million) in comparison to conventional ($83.95 million) and dry fractionation ($83.35 to $84.91 million) processes. Due to high value of coproducts, ethanol production costs in most fractionation processes ($1.29 to $1.35/gal) were lower than conventional ($1.36/gal) process. Internal rate of return for most of the wet (6.88 to 8.58%) and dry fractionation (6.45 to 7.04%) processes was higher than the conventional (6.39%) process. Wet fractionation process designed for germ and pericarp fiber recovery was most profitable among the processes. LA - English DB - MTMT ER - TY - JOUR AU - Li, Mengxing AU - Eskridge, Kent M. AU - Wilkins, Mark R. TI - Optimization of polyhydroxybutyrate production by experimental design of combined ternary mixture (glucose, xylose and arabinose) and process variables (sugar concentration, molar C:N ratio) JF - BIOPROCESS AND BIOSYSTEMS ENGINEERING J2 - BIOPROC BIOSYST ENG VL - 42 PY - 2019 IS - 9 SP - 1495 EP - 1506 PG - 12 SN - 1615-7591 DO - 10.1007/s00449-019-02146-1 UR - https://m2.mtmt.hu/api/publication/31058124 ID - 31058124 AB - Conversion of lignocellulosic feedstocks to polyhydroxybutyrate (PHB) could make lignocellulosic biorefineries more profitable and sustainable. Glucose, xylose and arabinose are the main sugars derived from pretreatment and hydrolysis of herbaceous feedstocks. Burkholderia sacchari DSM 17165 is a bacterium that can convert these sugars into PHB. However, the effects of sugar ratio, sugar concentration, and molar C:N ratio on PHB production have not been studied. In this study, a seven-run mixture design for sugar ratio combined with a 3(2) full factorial design for process variables was performed to optimize PHB production. A polynomial model was built based on experimental data, and optimum conditions for different sugar streams were derived and validated. The highest PHB production (3.81 g/L) was achieved with arabinose at a concentration of 25.54 g/L and molar C:N ratio of 74.35. Results provide references for manipulation of sugar mixture and process control to maximize PHB production. LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiujuan AU - Chen, Sitong AU - Yu, Yang AU - Wang, Shengwei AU - Xu, Zhaoxian AU - Huang, He AU - Jin, Mingjie TI - Ethanol production from mixtures of Distiller's Dried Grains with Solubles (DDGS) and corn JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 129 PY - 2019 SP - 59 EP - 66 PG - 8 SN - 0926-6690 DO - 10.1016/j.indcrop.2018.11.075 UR - https://m2.mtmt.hu/api/publication/30564999 ID - 30564999 AB - The dry milling ethanol industry produces Distillers' Dried Grains with Solubles (DDGS) as major co-products, which are composed of unhydrolyzed and unfermented polymeric sugars. Ethanol fermentation with the mixture of DDGS and corn has the potential to reduce cost, further utilize sugars in the DDGS and increase overall ethanol production in current dry grind process. In the current study, DDGS was pretreated with dilute alkali, liquid hot water (LHW) and dilute acid (DA). The pretreated DDGS was enzymatically hydrolyzed at 30% (w/w) solid loading and the resulting hydrolysate was mixed with liquefied corn (30%, w/w) at different ratios (0:1, 1:5, 1:2, 1:1 and 1:0 w/w) for simultaneous saccharification and fermentation (SSF). Compared with 30% corn only, SSF with LHW treated DDGS and corn (1:1) resulted in 12.6% increase in ethanol production with 69.3% increase in cellulose conversion, while DA treated DDGS resulted in 15.1% increase in ethanol production with 863% increase in cellulose conversion. This work implies that sugars within DDGS can be further converted in regular corn process after appropriate pretreatment. Feedstock cost can be reduced and the overall ethanol production can be enhanced by this strategy, which is beneficial to corn ethanol production in dry-mill process. LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiujuan AU - Xu, Zhaoxian AU - Yu, Jianming AU - Huang, He AU - Jin, Mingjie TI - In situ pretreatment during distillation improves corn fiber conversion and ethanol yield in the dry mill process JF - GREEN CHEMISTRY J2 - GREEN CHEM VL - 21 PY - 2019 IS - 5 SP - 1080 EP - 1090 PG - 11 SN - 1463-9262 DO - 10.1039/c8gc03447h UR - https://m2.mtmt.hu/api/publication/31058130 ID - 31058130 AB - Bioethanol is currently the major biofuel in the market, which is mostly produced from corn starch through the dry-mill process in the US and China. In contrast to the starch, the corn kernel fiber (mostly cellulose and hemicellulose) present in corn grain remains unconverted in the traditional process. Currently, technologies are being developed to convert corn fiber to boost the ethanol yield. In this work, an in situ acid pretreatment method was developed during distillation and was integrated into the dry-mill process. The pretreated stillage was either recycled to the liquefaction step with the addition of cellulase during fermentation or hydrolyzed using cellulase and then recycled to the liquefaction step or hydrolyzed using cellulase followed by C6/C5 sugar co-fermentation. As a result, C6/C5 sugar co-fermentation of the pretreated stillage improved the ethanol yield by 3.8%-6.3% compared to the traditional dry mill process, with cellulose conversion of 52.7%-77.5%. Recycling of 40% whole stillage or hydrolysate resulted in a 4.6%-7.9% increase in the total ethanol yield, with cellulose conversion of 56.0%-69.2%. This work demonstrated that integrating pretreatment and distillation in a single step is an efficient way to convert corn fiber into ethanol by saving energy and capital expenditure. LA - English DB - MTMT ER - TY - JOUR AU - Maniglia, Bianca C. AU - Tessaro, Larissa AU - Ramos, Ana Paula AU - Tapia-Blacido, Delia R. TI - Which plasticizer is suitable for films based on babassu starch isolated by different methods? JF - FOOD HYDROCOLLOIDS J2 - FOOD HYDROCOLLOID VL - 89 PY - 2019 SP - 143 EP - 152 PG - 10 SN - 0268-005X DO - 10.1016/j.foodhyd.2018.10.038 UR - https://m2.mtmt.hu/api/publication/30565000 ID - 30565000 AB - This work aimed to determine which plasticizer is suitable for films based on babassu starch isolated by steeping in water (WS), acid steeping (AS), or alkaline steeping (KS) with a view to obtaining less hydrophilic films with good mechanical properties. We used glycerol, sorbitol, glucose, or urea as plasticizers and determined the resulting film physical and functional properties. Plasticizer type did not affect film color or antioxidant activity, but it impacted film opacity and physical and functional properties. As verified by FTIR and SEM, the babassu starches presented different chemical composition and structure, so plasticizers affected AS, WS, and KS starch film properties differently. Glycerol and urea yielded more hydrophilic, more permeable to water vapor, less opaque, less mechanically resistant, and less crystalline AS and KS starch films. Meanwhile, WS starch films showed this behavior when sorbitol or glucose was used as plasticizer. Glucose provided films that were less permeable to water vapor regardless of starch type. With respect to application in food packaging, sorbitol was the most suitable plasticizer for AS and KS starch films, whereas glycerol was the most adequate plasticizer for WS starch film. LA - English DB - MTMT ER - TY - JOUR AU - Rai, Priya AU - Pandey, Ashutosh AU - Pandey, Anjana TI - Optimization of sugar release from banana peel powder waste (BPPW) using box-behnken design (BBD): BPPW to biohydrogen conversion JF - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY J2 - INT J HYDROGEN ENERG VL - 44 PY - 2019 IS - 47 SP - 25505 EP - 25513 PG - 9 SN - 0360-3199 DO - 10.1016/j.ijhydene.2019.07.168 UR - https://m2.mtmt.hu/api/publication/31058120 ID - 31058120 AB - Optimization of pre-treatment conditions has been achieved for total sugar release from banana peel powder waste (BPPW) feedstock modelled through a three-level Box-Behnken design (BBD) of the response surface methodology (RSM). A series of various runs were executed at varied acid (H2SO4) concentrations (0.05%-0.15% v/v), incubation periods (1 h -3 h) in water bath at 95 degrees C and alkali (NaOH) concentrations (0.05%-0.15% v/v) according to the Box-Behnken design (BBD). From RSM the significant values of incubation period, acid concentration and alkali concentration were obtained as 3 h, 0.095% v/v, and 0.05% v/v respectively. The maximum total sugar release was reported as 5243.62 mu g/ml which was highly close to the predicted value (5010.07 g/ml). The model P- value (0.001), R-sq (98.26%), (adj) R-sq (95.14%) and (pred) R-sq (79.56%) obtained through ANOVA justified the results. The mutual impact of alkali and incubation period had the highest effect on total sugar release from dried banana peel powder, followed by mutual impact of acid and incubation period based on ANOVA (Analysis of Variance) results.Under optimized conditions of pre-treatment six different substrate concentrations (1%, 3%, 5%, 7% and 9% w/v) of BPPW was hydrolyzed and used to obtain volumetric biohydrogen evolution. The highest cumulative volumetric bio hydrogen gas 43 ml H-2/30 ml media was achieved at 5% w/v of pretreated BPPW. The substrate concentration above 5% w/v resulted in lowered fermentation process owing to product and substrate inhibition. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. LA - English DB - MTMT ER - TY - JOUR AU - Ahmadzadeh, Safoura AU - Nasirpour, Ali AU - Harchegani, Maryam Beygy AU - Hamdami, Nasser AU - Keramat, Javad TI - Effect of electrohydrodynamic technique as a complementary process for cellulose extraction from bagasse: Crystalline to amorphous transition JF - CARBOHYDRATE POLYMERS J2 - CARBOHYD POLYM VL - 188 PY - 2018 SP - 188 EP - 196 PG - 9 SN - 0144-8617 DO - 10.1016/j.carbpol.2018.01.109 UR - https://m2.mtmt.hu/api/publication/27567048 ID - 27567048 LA - English DB - MTMT ER - TY - JOUR AU - Bichot, Aurelie AU - Delgenes, Jean-Philippe AU - Mechin, Valerie AU - Carrere, Helene AU - Bernet, Nicolas AU - Garcia-Bernet, Diana TI - Understanding biomass recalcitrance in grasses for their efficient utilization as biorefinery feedstock JF - REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY J2 - REV ENVIRON SCI BIO-TECHNOL VL - 17 PY - 2018 IS - 4 SP - 707 EP - 748 PG - 42 SN - 1569-1705 DO - 10.1007/s11157-018-9485-y UR - https://m2.mtmt.hu/api/publication/30564967 ID - 30564967 AB - One of the main challenges for the deployment of lignocellulosic biorefineries in future years is to find renewable and secured biomass sources in order to obtain bio-sourced products, as an alternative to petroleum-based commodities. Grass biomass, considering its characteristics (availability, composition, productivity, possibility of being harvested from both arable (post-harvest residues) and non-agricultural lands), can be considered as a biomass source for the future. Nevertheless, because of its complex structure and composition, which need deconstructive pre-treatments to render possible further biological conversions, grasses utilisation in biorefinery is today not widespread. Indeed, recalcitrance to polymers degradation in grasses concerns structural and compositional characteristics and can result in costly and complicated biorefinery processes. Grass recalcitrance is due to various natural factors strongly related and difficult to dissociate: rind and vascular structures; composition (lignin content is a key factor for cellulose hydrolysis acting like a physical barrier while hemicelluloses seem to play a more significant role in woody biomass than in grass plants); physical structures (crystalline nature and insoluble surface of cellulose, specific surface area, particle size), etc. Physico-chemical pretreatments are efficient solutions to overcome recalcitrance, while phenotypic selections are interesting but not efficient enough to obtain an optimal enzymatic hydrolysis. In some cases, the structural elements of grass biomass can be negatively affected by physico-chemical pretreatments, causing pre-treatment-induced recalcitrance, like cellulose hornification (irreversible alteration of cellulose microfibers), vascular structure collapsed and reduced cellulose bioaccesibility to enzymes due to cellulose covering by lignin, following lignin solubilisation. LA - English DB - MTMT ER - TY - JOUR AU - Buratti, Cinzia AU - Foschini, Daniele AU - Barbanera, Marco AU - Fantozzi, Francesco TI - Fermentable sugars production from peach tree prunings: Response surface model optimization of NaOH alkaline pretreatment JF - BIOMASS & BIOENERGY J2 - BIOMASS BIOENERGY VL - 112 PY - 2018 SP - 128 EP - 137 PG - 10 SN - 0961-9534 DO - 10.1016/j.biombioe.2017.12.032 UR - https://m2.mtmt.hu/api/publication/30565001 ID - 30565001 AB - Among lignocellulosic residues, peach tree prunings are widely abundant in Italy, due to an extensive production and a high yield of prunings per cultivated hectare; thus, it represents an interesting feedstock for no food derived ethanol. LA - English DB - MTMT ER - TY - JOUR AU - del, Rio Jose C AU - Rencoret, Jorge AU - Gutierrez, Ana AU - Kim, Hoon AU - Ralph, John TI - Structural Characterization of Lignin from Maize (Zea mays L.) Fibers: Evidence for Diferuloylputrescine Incorporated into the Lignin Polymer in Maize Kernels JF - JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY J2 - J AGR FOOD CHEM VL - 66 PY - 2018 IS - 17 SP - 4402 EP - 4413 PG - 12 SN - 0021-8561 DO - 10.1021/acs.jafc.8b00880 UR - https://m2.mtmt.hu/api/publication/27567049 ID - 27567049 LA - English DB - MTMT ER - TY - JOUR AU - Girotto, Francesca AU - Lavagnolo, Maria Cristina AU - Pivato, Alberto TI - Spent Coffee Grounds Alkaline Pre-treatment as Biorefinery Option to Enhance their Anaerobic Digestion Yield JF - WASTE AND BIOMASS VALORIZATION J2 - WASTE BIOMASS VALORI VL - 9 PY - 2018 IS - 12 SP - 2565 EP - 2570 PG - 6 SN - 1877-2641 DO - 10.1007/s12649-017-0033-8 UR - https://m2.mtmt.hu/api/publication/30565004 ID - 30565004 AB - Spent coffee grounds (SCGs) are potentially optimal substrates for methane production but the content of organic compounds refractory to anaerobic digestion reduces the yield of the process. Alkaline pre-treatment was applied to enhance the methane recovery from SCGs through anaerobic digestion. NaOH was applied with different loadings, namely 2, 4, 6, 8% w/w for 24h, to assess the efficiency of the process and the optimal amount of the basifying solution applied. The highest concentration of NaOH (8% w/w) lead to the best anaerobic digestion performances (392mLCH(4)/gVS) as a consequence of the slightly higher lignin degradation which was 24% higher than that of the untreated substrate, and of the higher dissolved organic carbon concentration. LA - English DB - MTMT ER - TY - JOUR AU - Haghighi-Manesh, Soroush AU - Azizi, Mohammad Hossein TI - Integrated extrusion-enzymatic treatment of corn bran for production of functional cake JF - FOOD SCIENCE AND NUTRITON J2 - FOOD SCI NUTR VL - 6 PY - 2018 IS - 7 SP - 1870 EP - 1878 PG - 9 SN - 2048-7177 DO - 10.1002/fsn3.738 UR - https://m2.mtmt.hu/api/publication/30564996 ID - 30564996 AB - Corn bran, as one of the high-fructose corn syrup industries' by-products, is a rich source of functional fibers. The major fraction of corn bran is insoluble arabinoxylan having lower functional properties than the minor soluble function. Therefore, the main aim of this research was to increase the soluble fiber content of corn bran and use it for functional cake production. In this regard, milled corn bran with three different sizes was exposed to one factor enzymatic treatment to select the best sieving size (the criterion for selecting the best product in each stage of assay was production of the highest amount of soluble fiber). Then, milled corn bran with the best particle size was exposed to nine different enzymatic treatments to select the best enzymatic treatment condition. Additionally, the extruder feed (corn bran) moisture was adjusted to three levels to select the best level of feed moisture content and use it for performing nine different extruding experiments. Concerning integrated extrusion-enzymatic treatment, nine different extruding pretreatments were conducted on corn bran through selecting the optimum moisture level of extruding. Afterward, the product was milled and sieved to the optimum size for enzymatic treatment, and the nine pretreatments were combined with nine different enzymatic treatments. The product containing the highest soluble fiber was selected and used at various levels for functional cake production. Finally, some organoleptic and physicochemical properties (springiness, gumminess, hardness, cohesiveness, Bostwick number, density) of the produced product were analyzed. LA - English DB - MTMT ER - TY - JOUR AU - Kurambhatti, Chinmay V. AU - Kumar, Deepak AU - Rausch, Kent D. AU - Tumbleson, Mike E. AU - Singh, Vijay TI - Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process JF - ENERGIES J2 - ENERGIES VL - 11 PY - 2018 IS - 11 PG - 12 SN - 1996-1073 DO - 10.3390/en11112921 UR - https://m2.mtmt.hu/api/publication/30564944 ID - 30564944 AB - Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 degrees C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 degrees C. Disk milling was not effective in increasing conversion compared to other treatments. Hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber. LA - English DB - MTMT ER - TY - JOUR AU - Li, Xiujuan AU - Chen, Sitong AU - Huang, He AU - Jin, Mingjie TI - In-situ corn fiber conversion improves ethanol yield in corn dry-mill process JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 113 PY - 2018 SP - 217 EP - 224 PG - 8 SN - 0926-6690 DO - 10.1016/j.indcrop.2018.01.037 UR - https://m2.mtmt.hu/api/publication/27314568 ID - 27314568 LA - English DB - MTMT ER - TY - JOUR AU - Shi, Jiangtao AU - Lu, Yu AU - Zhang, Yaoli AU - Cai, Liping AU - Shi, Sheldon Q. TI - Effect of thermal treatment with water, H2SO4 and NaOH aqueous solution on color, cell wall and chemical structure of poplar wood JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 8 PY - 2018 PG - 9 SN - 2045-2322 DO - 10.1038/s41598-018-36086-9 UR - https://m2.mtmt.hu/api/publication/30565003 ID - 30565003 AB - Thermal treatments with water, diluted acid, and diluted alkali aqueous solution of poplar wood blocks were carried out in a Teflon-lined autoclave at three temperatures. The effects of different liquids and temperatures on wood surface color, cell wall microstructure, and chemical structures were investigated by the chromameter, scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR). From the chromameter, it was observed that the lightness value decreased with temperature for all treatment conditions. The a* value increased with temperature in all liquid treatments. The b* value increased with temperature in hydrothermal and thermal with H2SO4 treatment but decreased with temperature in thermal with NaOH treatment. The total color difference (Delta E) was slightly changed in the hydrothermal treatment, but dramatically changed in the thermal with H2SO4 and NaOH aqueous treatments. SEM showed that the cell wall structure was damaged differently with different reagents and temperature. Middle lamella layers were always fractured in hydrothermal and NaOH treatments. However, both middle lamella and secondary cell wall were damaged after the H2SO4 treatment and intensified with temperature. These fractures usually parallel with the 52 layer microfibril angle (MFA) in the fiber cell wall. The FTIR analysis suggested that the chemical structure was obviously changed after the thermal with H2SO4 and NaOH treatments. And the missing or decreasing C=0 absorption peak indicated hemicellulose is degraded and new compounds produced during thermal with H2SO4 and NaOH treatment. On the other hand, lignin was partly degraded in the H2SO4 treatment and guaiacyl nuclei was degraded before syringyl nuclei. LA - English DB - MTMT ER - TY - JOUR AU - Wang, Li AU - Liu, Hua-Min AU - Xie, Ai-Jun AU - Zhu, Chun-Yan AU - Qin, Guang-Yong TI - Dietary Fiber Extraction from Defatted Corn Hull by Hot-Compressed Water JF - POLISH JOURNAL OF FOOD AND NUTRITION SCIENCES J2 - POLISH J FOOD NUTR SCI VL - 68 PY - 2018 IS - 2 SP - 133 EP - 140 PG - 8 SN - 1230-0322 DO - 10.1515/pjfns-2017-0015 UR - https://m2.mtmt.hu/api/publication/27567150 ID - 27567150 LA - English DB - MTMT ER - TY - JOUR AU - Xu, Youjie AU - Li, Jun AU - Moore, Connor AU - Xin, Zhanguo AU - Wang, Donghai TI - Physico-chemical characterization of pedigreed sorghum mutant stalks for biofuel production JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 124 PY - 2018 SP - 806 EP - 811 PG - 6 SN - 0926-6690 DO - 10.1016/j.indcrop.2018.08.049 UR - https://m2.mtmt.hu/api/publication/30565005 ID - 30565005 AB - The successful commercialization of cellulosic biofuels depends on a stable and sustainable supply of high quality biomass at a reasonable cost. The physical property and chemical composition of biomass are the most important indicators of a biomass source's potential for biofuel application. This study characterized the physical and chemical properties of 148 pedigreed sorghum (Sorghum bicolor L.) mutant stalks for biofuel production in order to accelerate the discovery of genes or gene mutations that underlie significant beneficial traits in sorghum. Large variations of chemical compositions were observed and indicated that breeding progress was achievable for sorghum development with desirable biofuel properties. The extractives are negatively correlated with the cellulose, hemicellulose, and lignin contents with an r of -0.85, -0.87, and -0.94, respectively. However, no relationships between ash and extractives contents were found in this study. Among the tested 148 sorghum mutant stalks, sorghum mutant ARS14 was identified with high sugar contents, high heating values, but less ash contents, which was suitable for the biorefinery industries with both biochemical and thermochemical conversions. LA - English DB - MTMT ER - TY - JOUR AU - Yang, Mengyao AU - Rehman, Muhammad Saif Ur AU - Yan, Tingxuan AU - Khan, Asad Ullah AU - Oleskowicz-Popiel, Piotr AU - Xu, Xia AU - Cui, Ping AU - Xu, Jian TI - Treatment of different parts of corn stover for high yield and lower polydispersity lignin extraction with high-boiling alkaline solvent JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 249 PY - 2018 SP - 737 EP - 743 PG - 7 SN - 0960-8524 DO - 10.1016/j.biortech.2017.10.055 UR - https://m2.mtmt.hu/api/publication/27314569 ID - 27314569 LA - English DB - MTMT ER - TY - JOUR AU - Kim, Daehwan AU - Orrego, David AU - Ximenes, Eduardo A AU - Ladisch, Michael R TI - Cellulose conversion of corn pericarp without pretreatment JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 245 PY - 2017 SP - 511 EP - 517 PG - 7 SN - 0960-8524 DO - 10.1016/j.biortech.2017.08.156 UR - https://m2.mtmt.hu/api/publication/27085440 ID - 27085440 LA - English DB - MTMT ER - TY - JOUR AU - Kristianto, Yohanes AU - Zhu, Liandong TI - Techno-economic optimization of ethanol synthesis from rice-straw supply chains JF - ENERGY J2 - ENERGY VL - 141 PY - 2017 SP - 2164 EP - 2176 PG - 13 SN - 0360-5442 DO - 10.1016/j.energy.2017.09.077 UR - https://m2.mtmt.hu/api/publication/27314570 ID - 27314570 LA - English DB - MTMT ER - TY - JOUR AU - Lv, Xiaojing AU - Xiong, Chunjiang AU - Li, Shuai AU - Chen, Xiaodong AU - Xiao, Wenjuan AU - Zhang, Dou AU - Li, Jiasheng AU - Gong, Yingxue AU - Lin, Jianghai AU - Liu, Zehuan TI - Vacuum-assisted alkaline pretreatment as an innovative approach for enhancing fermentable sugar yield and decreasing inhibitor production of sugarcane bagasse JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 239 PY - 2017 SP - 402 EP - 411 PG - 10 SN - 0960-8524 DO - 10.1016/j.biortech.2017.04.053 UR - https://m2.mtmt.hu/api/publication/26918160 ID - 26918160 LA - English DB - MTMT ER - TY - JOUR AU - Maniglia, Bianca C AU - Tessaro, Larissa AU - Lucas, Alessandra A AU - Tapia-Blacido, Delia R TI - Bioactive films based on babassu mesocarp flour and starch JF - FOOD HYDROCOLLOIDS J2 - FOOD HYDROCOLLOID VL - 70 PY - 2017 SP - 383 EP - 391 PG - 9 SN - 0268-005X DO - 10.1016/j.foodhyd.2017.04.022 UR - https://m2.mtmt.hu/api/publication/26918161 ID - 26918161 LA - English DB - MTMT ER - TY - JOUR AU - Mundim, Ribeiro Elaine Angelica AU - Bento, de Souza Fulvio Rafael AU - do, Amaral Fabio Augusto AU - Rodrigues, Filho Guimes AU - Ferreira, de Sousa Raquel Maria AU - Vieira, Julia Graciele AU - de Rezende, Costa Talita Ferreira AU - Thompson, Junior Jose Pedro AU - Nascimento, de Assuncao Rosana Maria AU - Canobre, Sheila Cristina TI - UTILIZATION OF CATIONIC HEMICELLULOSES, OBTAINED FROM THE CORN HUSK, IN ASSOCIATION WITH TANNIN FOR USE IN WASTEWATER TREATMENT OF INDUSTRIAL LAUNDRY JF - QUIMICA NOVA J2 - QUIM NOVA VL - 40 PY - 2017 IS - 1 SP - 17 EP - 24 PG - 8 SN - 0100-4042 DO - 10.21577/0100-4042.20160147 UR - https://m2.mtmt.hu/api/publication/26565015 ID - 26565015 LA - Portuguese DB - MTMT ER - TY - JOUR AU - Nguyen, Thi Minh Phuong AU - Phan, Huy Hoang AU - Le Quang, Dien AU - Doan, Thai Hoa TI - Optimization of sodium sulfide treatment of rice straw to increase the enzymatic hydrolysis in bioethanol production JF - CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY J2 - CLEAN TECHNOL ENVIRON POLICY VL - 19 PY - 2017 IS - 5 SP - 1313 EP - 1322 PG - 10 SN - 1618-954X DO - 10.1007/s10098-016-1329-2 UR - https://m2.mtmt.hu/api/publication/26749352 ID - 26749352 LA - English DB - MTMT ER - TY - JOUR AU - Patel, Harshvadan AU - Divecha, Jyoti AU - Shah, Amita TI - Efficient Enzymatic Digestion of Alkali Treated Maize Stover Holocellulose by Developing Balanced Cocktail of Cellulolytic and Hemicellulolytic Enzymes JF - WASTE AND BIOMASS VALORIZATION J2 - WASTE BIOMASS VALORI VL - 8 PY - 2017 IS - 6 SP - 1969 EP - 1979 PG - 11 SN - 1877-2641 DO - 10.1007/s12649-016-9769-9 UR - https://m2.mtmt.hu/api/publication/26918162 ID - 26918162 LA - English DB - MTMT ER - TY - JOUR AU - Qing, Qing AU - Guo, Qi AU - Zhou, Linlin AU - Gao, Xiaohang AU - Lu, Xiaoxue AU - Zhang, Yue TI - Comparison of alkaline and acid pretreatments for enzymatic hydrolysis of soybean hull and soybean straw to produce fermentable sugars JF - INDUSTRIAL CROPS AND PRODUCTS J2 - IND CROP PROD VL - 109 PY - 2017 SP - 391 EP - 397 PG - 7 SN - 0926-6690 DO - 10.1016/j.indcrop.2017.08.051 UR - https://m2.mtmt.hu/api/publication/27081822 ID - 27081822 LA - English DB - MTMT ER - TY - JOUR AU - Romero-Cedillo, Leticia AU - Poggi-Varaldo, Hector M AU - Ponce-Noyola, Teresa AU - Rios-Leal, Elvira AU - Ramos-Valdivia, Ana C AU - Cerda-Garcia, Rojas Carlos M AU - Tapia-Ramirez, Jose TI - A review of the potential of pretreated solids to improve gas biofuels production in the context of an OFMSW biorefinery JF - JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY J2 - J CHEM TECHNOL BIOT VL - 92 PY - 2017 IS - 5 SP - 937 EP - 958 PG - 22 SN - 0268-2575 DO - 10.1002/jctb.5116 UR - https://m2.mtmt.hu/api/publication/26565013 ID - 26565013 N1 - Funding Agency and Grant Number: CONACYTConsejo Nacional de Ciencia y Tecnologia (CONACyT); Bioenergy Thematic Network (Red Tematica de Bioenergia) [260457]; [188281]; [CB-2014/236895] Funding text: The authors also wish to thank CONACYT for a graduate scholarship to LRC and financial support through Grants No. 188281 and CB-2014/236895 to HMP-V and TPN, respectively. Furthermore, the authors want to express their gratitude to the Bioenergy Thematic Network (Red Tematica de Bioenergia), grant 260457. Nanoscience and Nanotechnology Program, Cinvestav-IPN, Mexico Department of Biotechnology and Bioengineering, Cinvestav-IPN, Mexico Department of Chemistry, Cinvestav-IPN, Mexico Department of Genetics and Molecular Biology, Cinvestav-IPN, Mexico Cited By :8 Export Date: 26 February 2020 CODEN: JCTBD Correspondence Address: Poggi-Varaldo, H.M.; Nanoscience and Nanotechnology Program, Cinvestav-IPNMexico; email: r4cepe@yahoo.com Chemicals/CAS: ammonia, 14798-03-9, 51847-23-5, 7664-41-7 LA - English DB - MTMT ER - TY - JOUR AU - Yang, Jing AU - Jiang, Jianchun AU - Zhang, Ning AU - Wei, Min AU - Zhao, Jian TI - Effects of different pretreatment methods on the enzymatic hydrolysis of oak shell JF - INTERNATIONAL JOURNAL OF GREEN ENERGY J2 - INT J GREEN ENERGY VL - 14 PY - 2017 IS - 1 SP - 33 EP - 38 PG - 6 SN - 1543-5075 DO - 10.1080/15435075.2014.884497 UR - https://m2.mtmt.hu/api/publication/26565016 ID - 26565016 LA - English DB - MTMT ER - TY - JOUR AU - Zabed, Hossain AU - Boyce, Amru Nasrulhaq AU - Sahu, J N AU - Faruq, Golam TI - Evaluation of the quality of dried distiller's grains with solubles for normal and high sugary corn genotypes during dry-grind ethanol production JF - JOURNAL OF CLEANER PRODUCTION J2 - J CLEAN PROD VL - 142 PY - 2017 SP - 4282 EP - 4293 PG - 12 SN - 0959-6526 DO - 10.1016/j.jclepro.2016.11.180 UR - https://m2.mtmt.hu/api/publication/26565014 ID - 26565014 LA - English DB - MTMT ER - TY - JOUR AU - Eblaghi, Marzieh AU - Niakousari, Mehrdad AU - Sarshar, Mohammad AU - Mesbahi, Gholam Reza TI - Combining Ultrasound with Mild Alkaline Solutions as an Effective Pretreatment to Boost the Release of Sugar Trapped in Sugarcane Bagasse for Bioethanol Production JF - JOURNAL OF FOOD PROCESS ENGINEERING J2 - J FOOD PROCESS ENG VL - 39 PY - 2016 IS - 3 SP - 273 EP - 282 PG - 10 SN - 0145-8876 DO - 10.1111/jfpe.12220 UR - https://m2.mtmt.hu/api/publication/26034863 ID - 26034863 LA - English DB - MTMT ER - TY - JOUR AU - Mahajan, Rupali AU - Kaur, Harmanjot AU - Rao, Raman AU - Kumar, Sachin ED - Kumar, S ED - Khanal, SK ED - Yadav, YK TI - Pretreatment of Paddy Straw to Improve Biogas Yield JF - SPRINGER PROCEEDINGS IN ENERGY J2 - SPRINGER PROC ENERGY PY - 2016 IS - Kapurthala SP - 43 EP - 61 PG - 19 SN - 2352-2534 DO - 10.1007/978-81-322-2773-1_4 UR - https://m2.mtmt.hu/api/publication/26224324 ID - 26224324 LA - English DB - MTMT ER - TY - JOUR AU - Xiang, Zhouyang AU - Runge, Troy TI - Emulsifying properties of succinylated arabinoxylan-protein gum produced from corn ethanol residuals JF - FOOD HYDROCOLLOIDS J2 - FOOD HYDROCOLLOID VL - 52 PY - 2016 SP - 423 EP - 430 PG - 8 SN - 0268-005X DO - 10.1016/j.foodhyd.2015.07.018 UR - https://m2.mtmt.hu/api/publication/25360324 ID - 25360324 LA - English DB - MTMT ER - TY - JOUR AU - Xiang, Zhouyang AU - Anthony, Renil AU - Lan, Wu AU - Runge, Troy TI - Glutaraldehyde crosslinking of arabinoxylan produced from corn ethanol residuals JF - CELLULOSE J2 - CELLULOSE VL - 23 PY - 2016 IS - 1 SP - 307 EP - 321 PG - 15 SN - 0969-0239 DO - 10.1007/s10570-015-0828-3 UR - https://m2.mtmt.hu/api/publication/25428779 ID - 25428779 LA - English DB - MTMT ER - TY - JOUR AU - Yeasmin, Shabina AU - Kim, Chul-Hwan AU - Islam, Shah Md Asraful AU - Lee, Ji-Young TI - Comparison between solid-state and powder-state alkali pretreatment on saccharification and fermentation for bioethanol production from rice straw JF - PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY J2 - PREP BIOCHEM BIOTECH VL - 46 PY - 2016 IS - 3 SP - 229 EP - 237 PG - 9 SN - 1082-6068 DO - 10.1080/10826068.2015.1015563 UR - https://m2.mtmt.hu/api/publication/25792868 ID - 25792868 LA - English DB - MTMT ER - TY - JOUR AU - Caballero-Briones, E AU - Chale-Lara, F AU - Zapata-Navarro, A TI - Method to estimate crystallinity in nixtamalized corn pericarp from sequential extractions and X-ray diffraction JF - JOURNAL OF CEREAL SCIENCE J2 - J CEREAL SCI VL - 64 PY - 2015 SP - 11 EP - 15 PG - 5 SN - 0733-5210 DO - 10.1016/j.jcs.2015.04.006 UR - https://m2.mtmt.hu/api/publication/25360325 ID - 25360325 LA - English DB - MTMT ER - TY - JOUR AU - Cabrera, Emir AU - Munoz, Maria J AU - Martin, Ricardo AU - Caro, Ildefonso AU - Curbelo, Caridad AU - Diaz, Ana B TI - Comparison of industrially viable pretreatments to enhance soybean straw biodegradability JF - BIORESOURCE TECHNOLOGY J2 - BIORESOUR TECHNOL VL - 194 PY - 2015 SP - 1 EP - 6 PG - 6 SN - 0960-8524 DO - 10.1016/j.biortech.2015.06.090 UR - https://m2.mtmt.hu/api/publication/25360328 ID - 25360328 LA - English DB - MTMT ER - TY - JOUR AU - Fehér, Csaba AU - Zita, Gazsó AU - Patomwat, Tatijarern AU - Máté, Molnár AU - Barta, Zsolt AU - Réczey, Istvánné TI - Investigation of selective arabinose release from corn fibre by acid hydrolysis under mild conditions JF - JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY J2 - J CHEM TECHNOL BIOT VL - 90 PY - 2015 IS - 5 SP - 896 EP - 906 PG - 11 SN - 0268-2575 DO - 10.1002/jctb.4395 UR - https://m2.mtmt.hu/api/publication/2828448 ID - 2828448 N1 - Funding Agency and Grant Number: Hungarian Research Fund [OTKA PD-108389]; New Hungary Development Plan [TAMOP-4.2.1/B-09/1/KMR-2010-0002] Funding text: The authors gratefully thank the Project OTKA PD-108389 of the Hungarian Research Fund for financial support. Special thanks to Professor Kemeny Sandor for statistical assistance. This work is connected to the scientific program of the 'Development of quality-oriented and harmonized R+D+I strategy and functional model at BME' project. This project is supported by the New Hungary Development Plan (Project ID: TAMOP-4.2.1/B-09/1/KMR-2010-0002). LA - English DB - MTMT ER - TY - JOUR AU - Kamboj, Sunil AU - Singh, Kuldeep AU - Tiwary, A K AU - Rana, Vikas TI - Optimization of microwave assisted Maillard reaction to fabricate and evaluate corn fiber gum-chitosan IPN films JF - FOOD HYDROCOLLOIDS J2 - FOOD HYDROCOLLOID VL - 44 PY - 2015 SP - 260 EP - 276 PG - 17 SN - 0268-005X DO - 10.1016/j.foodhyd.2014.08.021 UR - https://m2.mtmt.hu/api/publication/24902644 ID - 24902644 N1 - Cited By :18 Export Date: 17 January 2022 CODEN: FOHYE Correspondence Address: Rana, V.; Pharmaceutics Division, Dept. of Pharmaceutical Sciences and Drug Research, Punjabi UniversityIndia LA - English DB - MTMT ER - TY - JOUR AU - Myat, Lin AU - Ryu, Gi-Hyung TI - Thermo-mechanical extrusion and sodium hydroxide pretreatments for ethanol production from destarched corn fiber JF - ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY J2 - ENVIRON PROG SUSTAIN VL - 34 PY - 2015 IS - 3 SP - 823 EP - 831 PG - 9 SN - 1944-7442 DO - 10.1002/ep.12059 UR - https://m2.mtmt.hu/api/publication/24903706 ID - 24903706 LA - English DB - MTMT ER - TY - JOUR AU - Popovic, Jasmina AU - Popovic, Mladan AU - Diporovic-Momcilovic, Milanka AU - Gavrilovic-Grmusa, Ivana TI - EFFECTS OF THE CHEMICAL TREATMENT CONDITIONS OF THE NARROW-LEAVED ASH (FRAXINUS ANGUSTIFOLIA VAHL. SSP PANNONICA SOO & SIMON) ON THE LAP SHEAR STRENGTH JF - WOOD RESEARCH J2 - WOOD RES-SLOVAKIA VL - 60 PY - 2015 IS - 4 SP - 543 EP - 554 PG - 12 SN - 1336-4561 UR - https://m2.mtmt.hu/api/publication/25360327 ID - 25360327 LA - English DB - MTMT ER - TY - JOUR AU - Sumer, Fatma AU - Stark, Benjamin C AU - Akbas, Meltem Yesilcimen TI - Efficient ethanol production from potato and corn processing industry waste using E. coli engineered to express Vitreoscilla haemoglobin JF - ENVIRONMENTAL TECHNOLOGY J2 - ENVIRON TECHNOL VL - 36 PY - 2015 IS - 18 SP - 2319 EP - 2327 PG - 9 SN - 0959-3330 UR - https://m2.mtmt.hu/api/publication/25360326 ID - 25360326 LA - English DB - MTMT ER - TY - JOUR AU - Behera, Shuvashish AU - Arora, Richa AU - Nandhagopal, N AU - Kumar, Sachin TI - Importance of chemical pretreatment for bioconversion of lignocellulosic biomass JF - RENEWABLE & SUSTAINABLE ENERGY REVIEWS J2 - RENEW SUST ENERG REV VL - 36 PY - 2014 SP - 91 EP - 106 PG - 16 SN - 1364-0321 DO - 10.1016/j.rser.2014.04.047 UR - https://m2.mtmt.hu/api/publication/24901283 ID - 24901283 LA - English DB - MTMT ER - TY - JOUR AU - Kamboj, Sunil AU - Rana, Vikas TI - Physicochemical, rheological and antioxidant potential of corn fiber gum JF - FOOD HYDROCOLLOIDS J2 - FOOD HYDROCOLLOID VL - 39 PY - 2014 SP - 1 EP - 9 PG - 9 SN - 0268-005X DO - 10.1016/j.foodhyd.2013.12.015 UR - https://m2.mtmt.hu/api/publication/24902650 ID - 24902650 N1 - Cited By :46 Export Date: 17 January 2022 CODEN: FOHYE Correspondence Address: Rana, V.; Pharmaceutics Division, , Patiala 147002, India; email: vikas_pbi@rediffmail.com LA - English DB - MTMT ER - TY - JOUR AU - Liang, YN AU - Perez, I AU - Goetzelmann, K AU - Trupia, S TI - Microbial Lipid Production from Pretreated and Hydrolyzed Corn Fiber JF - BIOTECHNOLOGY PROGRESS J2 - BIOTECHNOL PROGR VL - 30 PY - 2014 IS - 4 SP - 945 EP - 951 PG - 7 SN - 8756-7938 DO - 10.1002/btpr.1927 UR - https://m2.mtmt.hu/api/publication/24662654 ID - 24662654 LA - English DB - MTMT ER - TY - JOUR AU - Myat, L AU - Ryu, GH TI - Characteristics of destarched corn fiber extrudates for ethanol production JF - JOURNAL OF CEREAL SCIENCE J2 - J CEREAL SCI VL - 60 PY - 2014 IS - 2 SP - 289 EP - 296 PG - 8 SN - 0733-5210 DO - 10.1016/j.jcs.2014.06.006 UR - https://m2.mtmt.hu/api/publication/24662649 ID - 24662649 LA - English DB - MTMT ER - TY - JOUR AU - Ribeiro, EAM AU - Rodrigues, G AU - Vieira, JG AU - de Sousa, RMF AU - de Assuncao, RMN AU - Meireles, CD AU - Duarte, J AU - Zeni, M TI - CHARACTERIZATION OF ASYMMETRIC MEMBRANES OF CELLULOSE ACETATE FROM RECYCLING OF RESIDUE CORN STOVER FOR USE IN ULTRAFILTRATION JF - QUIMICA NOVA J2 - QUIM NOVA VL - 37 PY - 2014 IS - 3 SP - 385 EP - + PG - 8 SN - 0100-4042 DO - 10.5935/0100-4042.20140070 UR - https://m2.mtmt.hu/api/publication/24662656 ID - 24662656 LA - Portuguese DB - MTMT ER - TY - JOUR AU - Xiang, ZY AU - Watson, J AU - Tobimatsu, Y AU - Runge, T TI - Film-forming polymers from distillers' grains: structural and material properties JF - 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