Catalyst Evolution Enhances Production of Xylitol from Acetal-Stabilized Xylose
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چکیده
منابع مشابه
Production of xylitol from D-xylose by a xylitol dehydrogenase gene-disrupted mutant of Candida tropicalis.
Xylitol dehydrogenase (XDH) is one of the key enzymes in d-xylose metabolism, catalyzing the oxidation of xylitol to d-xylulose. Two copies of the XYL2 gene encoding XDH in the diploid yeast Candida tropicalis were sequentially disrupted using the Ura-blasting method. The XYL2-disrupted mutant, BSXDH-3, did not grow on a minimal medium containing d-xylose as a sole carbon source. An enzyme assa...
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Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Anne Usvalampi Name of the doctoral dissertation Publisher School of Chemical Technology Unit Department of Biotechnology and Chemical Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 137/2013 Field of research Bioprocess Engineering Manuscript submitted 4 June 2013 Date of the defence 25 October 20...
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Whole cells and a cell extract of Pachysolen tannophilus converted xylose to xylitol, ethanol, and CO(2). The whole-cell system converted xylitol slowly to CO(2) and little ethanol was produced, whereas the cell-free system converted xylitol quantitatively to ethanol (1.64 mol of ethanol per mol of xylitol) and CO(2). The supernatant solution from high-speed centrifugation (100,000 x g) of the ...
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The production of xylitol from concentrated synthetic xylose solutions (S(o) = 130-135 g/L) by Debaryomyces hansenii was investigated at different pH and temperature values. At optimum starting pH (pH(o) = 5.5), T = 24 degrees C, and relatively low starting biomass levels (0.5-0.6 g(x)/L), 88% of xylose was utilized for xylitol production, the rest being preferentially fermented to ethanol (10%...
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The yeast Candida tropicalis DSM 7524 produces xylitol, a natural, low-calorie sweetener, by fermentation of xylose. In order to increase xylitol production rate during the submerged fermentation process, some parameters-substrate (xylose) concentration, pH, aeration rate, temperature and fermentation strategy-have been optimized. The maximum xylitol yield reached at 60-80 g/L initial xylose co...
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ژورنال
عنوان ژورنال: ACS Sustainable Chemistry & Engineering
سال: 2020
ISSN: 2168-0485,2168-0485
DOI: 10.1021/acssuschemeng.9b06456