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Pseudomonas taetrolens is an efficient LBA-producing bacterium. To improve the LBA-production ability of P. taetrolens, we modified the strain by genetic engineering. We performed homologous expression of the quinoprotein glucose dehydrogenase gene in P. taetrolens and measured the intracellular lactose-oxidizing activity and LBA production titer. In flask cultures at 12 h of incubation, the intracellular lactose oxidizing activity (0.159 U/g dry weight cell) and LBA production titer (77.2 g/L) of the recombinant P. taetrolens were approximately 118 % and 69 % higher than those (0.073 U/g dry weight cell and 45.8 g/L, respectively) of wild-type P. taetrolens. Using this recombinant strain as a whole-cell biocatalyst (WCB), the effects of reaction parameters, such as reaction temperature, cell density, and cell harvest time, were investigated on LBA production. Under optimized reaction conditions, the LBA production titer, yield, and productivity of WCB were 200 g/L, 95.6 %, and 16.7 g/L/h, respectively. Compared with our previous study, LBA production titer, yield, and productivity, which are key factors for industrial LBA production, were significantly improved by fermentation of wild-type P. taetrolens. Moreover, the reaction for LBA production could be performed up to seven times without a significant reduction in productivity, implying that this WCB was rather robust. Our results suggest that the utilization of whole-cell biocatalysis using recombinant P. taetrolens provides a potential solution to achieve economically feasible production of LBA.", "subjects" : [ { "otype" : "Classification", "mtid" : 11058, "link" : "/api/classification/11058", "label" : "Környezeti biotechnológia", "published" : true, "snippet" : true } ], "keywords" : [ { "otype" : "Keyword", "mtid" : 1892945, "link" : "/api/keyword/1892945", "label" : "Lactobionic acid", "published" : true, "snippet" : true }, { "otype" : "Keyword", "mtid" : 1956482, "link" : "/api/keyword/1956482", "label" : "Whole cell biocatalysis", "published" : true, "snippet" : true }, { "otype" : "Keyword", "mtid" : 2249540, "link" : "/api/keyword/2249540", "label" : "Quinoprotein glucose dehydrogenase", "published" : true, "snippet" : true }, { "otype" : "Keyword", "mtid" : 2249541, "link" : "/api/keyword/2249541", "label" : "Homologous expression", "published" : true, "snippet" : true }, { "otype" : "Keyword", "mtid" : 2249542, "link" : "/api/keyword/2249542", "label" : "Pseudomonas taetrolens", "published" : true, "snippet" : true } ], "digital" : null, "printed" : null, "sourceYear" : 2020, "foreignEdition" : true, "foreignLanguage" : true, "fullPublication" : true, "conferencePublication" : false, "nationalOrigin" : null, "missingAuthor" : false, "oaType" : "NONE", "oaCheckDate" : "2021-09-30", "oaFree" : false, "citationCount" : 0, "citationCountUnpublished" : 0, "citationCountWoOther" : 0, "independentCitCountWoOther" : 0, "doiCitationCount" : 0, "wosCitationCount" : 0, "scopusCitationCount" : 0, "independentCitationCount" : 0, "unhandledCitationCount" : 0, "citingPubCount" : 0, "independentCitingPubCount" : 0, "unhandledCitingPubCount" : 0, "citedPubCount" : 1, "citedCount" : 1, "ratings" : [ { "otype" : "SjrRating", "mtid" : 10743382, "link" : "/api/sjrrating/10743382", "label" : "sjr:Q2 (2020) Scopus - Applied Microbiology and Biotechnology ENZYME AND MICROBIAL TECHNOLOGY 0141-0229 1879-0909", "listPos" : 43, "rankValue" : 0.49, "type" : "journal", "ratingType" : { "otype" : "RatingType", "mtid" : 10002, "link" : "/api/ratingtype/10002", "label" : "sjr", "code" : "sjr", "published" : true, "snippet" : true }, "subject" : { "otype" : "ClassificationExternal", "mtid" : 2402, "link" : "/api/classificationexternal/2402", "label" : "Scopus - Applied Microbiology and Biotechnology", "published" : true, "oldId" : 2402, "snippet" : true }, "ranking" : "Q2", "calculation" : "DIRECT", "published" : true, "snippet" : true } ], "ratingsForSort" : "Q2", "hasCitationDuplums" : false, "directInstitutesForSort" : "", "ownerAuthorCount" : 1, "ownerInstituteCount" : 1, "directInstituteCount" : 0, "authorCount" : 5, "contributorCount" : 0, "hasQualityFactor" : true, "link" : "/api/publication/31767051", "label" : "Oh Yu-Ri et al. 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