@article{MTMT:3271373, title = {Phenolic Compound Diversity Explored in the Context of Photo-Oxidative Stress Protection}, url = {https://m2.mtmt.hu/api/publication/3271373}, author = {Csepregi, Kristóf and Hideg, Éva Olga}, doi = {10.1002/pca.2720}, journal-iso = {PHYTOCHEM ANALYSIS}, journal = {PHYTOCHEMICAL ANALYSIS}, volume = {29}, unique-id = {3271373}, issn = {0958-0344}, keywords = {hydrogen peroxide; flavonoid; antioxidant capacity; singlet oxygen; UV absorption}, year = {2018}, eissn = {1099-1565}, pages = {129-136} } @article{MTMT:3343546, title = {Hydrothermal evolution of PF-co-doped TiO2 nanoparticles and their antibacterial activity against carbapenem-resistant Klebsiella pneumoniae}, url = {https://m2.mtmt.hu/api/publication/3343546}, author = {Kőrösi, László Tamás and Bognár, Balázs and Horváth, Marianna and Schneider, György and Kovács, János and Scarpellini, Alice and Castelli, Andrea and Colombo, Massimo and Prato, Mirko}, doi = {10.1016/j.apcatb.2018.03.012}, journal-iso = {APPL CATAL B-ENVIRON}, journal = {APPLIED CATALYSIS B-ENVIRONMENTAL}, volume = {231}, unique-id = {3343546}, issn = {0926-3373}, keywords = {TIO2; EPR; antibacterial activity; Photocatalysis; nonmetal co-doping}, year = {2018}, eissn = {1873-3883}, pages = {115-122}, orcid-numbers = {Kovács, János/0000-0001-7742-5515} } @article{MTMT:3388901, title = {Foliar exposure of grapevine (Vitis vinifera L.) to TiO2 nanoparticles under field conditions: Photosynthetic response and flavonol profile}, url = {https://m2.mtmt.hu/api/publication/3388901}, author = {Teszlák, Péter and Kocsis, Marianna and Scarpellini, A and Jakab, Gábor and Kőrösi, László Tamás}, doi = {10.1007/s11099-018-0832-6}, journal-iso = {PHOTOSYNTHETICA}, journal = {PHOTOSYNTHETICA}, volume = {56}, unique-id = {3388901}, issn = {0300-3604}, year = {2018}, eissn = {1573-9058}, pages = {1378-1386} } @article{MTMT:3018619, title = {Comparative evaluation of total antioxidant capacities of plant polyphenols}, url = {https://m2.mtmt.hu/api/publication/3018619}, author = {Csepregi, Kristóf and Neugart, S and Schreiner, M and Hideg, Éva Olga}, doi = {10.3390/molecules21020208}, journal-iso = {MOLECULES}, journal = {MOLECULES}, volume = {21}, unique-id = {3018619}, issn = {1420-3049}, year = {2016}, eissn = {1420-3049} } @article{MTMT:3012880, title = {H2O2-assisted photocatalysis on flower-like rutile TiO2 nanostructures. Rapid dye degradation and inactivation of bacteria}, url = {https://m2.mtmt.hu/api/publication/3012880}, author = {Kőrösi, László Tamás and Mirko, Prato and Alice, Scarpellini and Kovács, János and Dóra, Dömötör and Kovács, Tamás and Szilvia, Papp}, doi = {10.1016/j.apsusc.2015.12.247}, journal-iso = {APPL SURF SCI}, journal = {APPLIED SURFACE SCIENCE}, volume = {365}, unique-id = {3012880}, issn = {0169-4332}, year = {2016}, eissn = {1873-5584}, pages = {171-179}, orcid-numbers = {Kovács, János/0000-0001-7742-5515} } @article{MTMT:2784206, title = {Hydrothermal synthesis, structure and photocatalytic activity of PF-co-doped TiO2}, url = {https://m2.mtmt.hu/api/publication/2784206}, author = {Kőrösi, László Tamás and Prato, M and Scarpellini, A and Riedinger, A and Kovács, János and Kus, M and Meynen, V and Papp, Szilvia}, doi = {10.1016/j.mssp.2014.10.033}, journal-iso = {MAT SCI SEMICON PROC}, journal = {MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING}, volume = {30}, unique-id = {2784206}, issn = {1369-8001}, abstract = {A series of PF-co-doped titanium dioxide (PF-TiO2) samples with various PF contents were synthesized hydrothermally at 250 °C and systematically investigated by means of X-ray diffraction, X-ray photoelectron spectroscopy and electron microscopy. For the PF-co-doping of TiO2, hexafluorophosphoric acid (HPF6) was used. Increasing HPF6 concentration did not decrease the crystallinity of the synthesized samples, but the dopant concentration strongly influenced the size and morphology of the PF-TiO2 nanoparticles. The undoped TiO2 consisted of polymorphic and polydisperse nanoparticles, whereas smaller, predominantly spherical particles were observed for the PF-TiO2 samples. Diffuse reflectance UV-vis spectroscopy revealed that PF-TiO2 exhibited a slightly higher band gap energy than that of undoped TiO2. Despite this blue-shift in absorption edge, the photocatalytic activity of PF-TiO2 was higher than that of undoped TiO2 even under visible light irradiation. The effects of the dopant concentration on the structure and photocatalytic activity are discussed in detail.}, keywords = {electron microscopy; Crystal growth; NANOPARTICLES; x-ray photoelectron spectroscopy; Nanostructures; Synthesis (chemical); Photons; X ray photoelectron spectroscopy; X ray diffraction; PHOTOELECTRONS; Absorption edges; Electron microscopes; Photocatalysis; Ultraviolet visible spectroscopy; Doping (additives); Spherical particle; Semiconductor doping; Hydrothermal synthesis; Photocatalytic activities; VISIBLE-LIGHT IRRADIATION; Band gap energy; Crystallinities; Diffuse reflectance-UV-vis; Dopant concentrations; titanium dioxide}, year = {2015}, eissn = {1873-4081}, pages = {442-450}, orcid-numbers = {Kovács, János/0000-0001-7742-5515} } @article{MTMT:2416770, title = {On the spectrophotometric determination of total phenolic and flavonoid contents}, url = {https://m2.mtmt.hu/api/publication/2416770}, author = {Csepregi, Kristóf and Kocsis, Marianna and Hideg, Éva Olga}, doi = {10.1556/ABiol.64.2013.4.10}, journal-iso = {ACTA BIOL HUNG}, journal = {ACTA BIOLOGICA HUNGARICA (1983-2018)}, volume = {64}, unique-id = {2416770}, issn = {0236-5383}, year = {2013}, eissn = {1588-256X}, pages = {500-509} } @article{MTMT:1922023, title = {Developmental stage is an important factor that determines the antioxidant responses of young and old grapevine leaves under UV irradiation in a green-house.}, url = {https://m2.mtmt.hu/api/publication/1922023}, author = {Majer, Petra and Hideg, Éva Olga}, doi = {10.1016/j.plaphy.2011.09.018}, journal-iso = {PLANT PHYSIOL BIOCH (PPB)}, journal = {PLANT PHYSIOLOGY AND BIOCHEMISTRY}, volume = {50}, unique-id = {1922023}, issn = {0981-9428}, abstract = {The impact of UV irradiation was studied on photosynthesis, photosystem II photochemical yields and antioxidant responses using green-house grown grapevine (Vitis vinifera L. cv. Chardonnay) leaves. Supplemental UV irradiation (280-400 nm) was centred in the UV-B region, and corresponded to 8.95 kJ m(2) d(1) global (280-400 nm) or 8.04 kJ m(2) d(1) UV-B (280-315 nm) biologically effective dose. UV irradiation was applied daily and its effects were evaluated after 4-days. Younger (1-3 weeks-old) leaves (YL) and older (4-6 weeks-old) leaves (OL) were affected differently, UV irradiation decreased their photochemical yields to 78% and 56%, respectively. Unlike OL, YL responded by an increase in UV-B absorbing pigment, anthocyanin and total phenolics contents. UV irradiation increased total antioxidant capacities in YL but not in OL. YL were also different in their ability to increase specific hydroxyl radical and singlet oxygen neutralizing capacities in response to the supplemental UV irradiation, which is reported here for the first time. Our results suggest that the ability of maintaining photosynthesis under supplemental UV is not necessarily determined by base levels of antioxidants but rather by their inducibilities in response to the irradiation and emphasise the importance of comparing leaves of the same age in UV studies. Correlations between various antioxidant capacities, pigment contents and photosynthesis parameters were also examined. However, no single element of the defence system can be picked up as decisive factor of sensitivity to UV.}, keywords = {metabolism; ARTICLE; antioxidants; PHENOLS; PHOTOSYNTHESIS; ADAPTATION; growth, development and aging; comparative study; ANTIOXIDANT; Ultraviolet Rays; Pigments, Biological; Adaptation, Physiological; ultraviolet radiation; radiation exposure; Reactive oxygen species; ANTHOCYANINS; Photosystem II; Hydroxyl Radical; Photosystem II Protein Complex; Vitis vinifera; Cell Aging; pigment; phenol derivative; plant leaf; Anthocyanin; Vitaceae; Vitis; singlet oxygen; UV-B irradiation; Plant Leaves; Grapevine leaf; Oxidative stress}, year = {2012}, eissn = {1873-2690}, pages = {15-23} } @article{MTMT:1913521, title = {The genetic basis of singlet oxygen-induced stress responses of Arabidopsis thaliana}, url = {https://m2.mtmt.hu/api/publication/1913521}, author = {Wagner, D and Przybyla, D and Camp, Rod and Kim, C and Landgraf, F and Lee, KP and Wursch, M and Laloi, C and Nater, M and Hideg, Éva Olga and Apel, K}, doi = {10.1126/science.1103178}, journal-iso = {SCIENCE}, journal = {SCIENCE}, volume = {306}, unique-id = {1913521}, issn = {0036-8075}, keywords = {PHOTOSYSTEM-II; PHOTOSYNTHESIS; light; LEAVES}, year = {2004}, eissn = {1095-9203}, pages = {1183-1185} }