Results 131 to 140 of about 3,060 (172)
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Biotechnology Letters, 2013
Xylitol dehydrogenase (XDHA) and L-arabitol dehydrogenase (LADA) are two key enzymes in xylan metabolism catalyzing the oxidation of xylitol to D-xylulose and arabitol to L-xylulose, respectively. In Aspergillus oryzae, XDHA and LADA are encoded by xdhA and ladA.
N Kitamoto
exaly +3 more sources
Xylitol dehydrogenase (XDHA) and L-arabitol dehydrogenase (LADA) are two key enzymes in xylan metabolism catalyzing the oxidation of xylitol to D-xylulose and arabitol to L-xylulose, respectively. In Aspergillus oryzae, XDHA and LADA are encoded by xdhA and ladA.
N Kitamoto
exaly +3 more sources
Purification and characterisation of xylitol dehydrogenase from Neurospora crassa
FEMS Microbiology Letters, 1997The purification and characterisation of one of the key enzymes in the conversion of xylose to ethanol, xylitol dehydrogenase (XD), from Neurospora crassa is reported. This organism has the unique ability to directly convert biomass to ethanol. The enzyme was purified 81-fold by fractional ammonium sulfate precipitation, column chromatography on DEAE ...
exaly +2 more sources
Enzyme and Microbial Technology, 2010
Abstract Due to its anticariogenic properties, the five-carbon sugar alcohol xylitol is finding increasing use in food industry as a functional sweetener. Although xylitol is currently manufactured by the chemical reduction of xylose, its biological production would be attractive because of lower costs and better organoleptic features.
Elena Tamburini +2 more
exaly +2 more sources
Abstract Due to its anticariogenic properties, the five-carbon sugar alcohol xylitol is finding increasing use in food industry as a functional sweetener. Although xylitol is currently manufactured by the chemical reduction of xylose, its biological production would be attractive because of lower costs and better organoleptic features.
Elena Tamburini +2 more
exaly +2 more sources
Development of a xylitol biosensor composed of xylitol dehydrogenase and diaphorase
Canadian Journal of Microbiology, 2000In preparation for the development of a xylitol biosensor, the xylitol dehydrogenase of Candida tropicalis IFO 0618 was partially purified and characterized. The optimal pH and temperature of the xylitol dehydrogenase were pH 8.0 and 50°C, respectively.
K, Takamizawa +4 more
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The Activity of Xylose Reductase and Xylitol Dehydrogenase in Yeasts
Microbiology, 2003The activity and the cofactor specificity of xylose reductase and xylitol dehydrogenase were studied in extracts of yeasts from the genera Candida, Kluyveromyces, Pachysolen, Pichia, and Torulopsis grown under microaerobic conditions. It was found that xylitol dehydrogenase in all of the yeast species studied is specific for NAD+; xylose reductase in ...
E N, Iablochkova +4 more
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Applied Biochemistry and Biotechnology, 2002
The production of xylitol from D-glucose occurs through a three-step process in which D-arabitol and D-xylulose are formed as the first and second intermediate product, respectively, and both are obtained via microbial bioconversion reactions. Catalytic hydrogenation of D-xylulose yields xylitol; however, it is contaminated with D-arabitol.
Gerhard, Mayer +2 more
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The production of xylitol from D-glucose occurs through a three-step process in which D-arabitol and D-xylulose are formed as the first and second intermediate product, respectively, and both are obtained via microbial bioconversion reactions. Catalytic hydrogenation of D-xylulose yields xylitol; however, it is contaminated with D-arabitol.
Gerhard, Mayer +2 more
openaire +2 more sources
Identification of a Xylitol Dehydrogenase Gene from Kluyveromyces marxianus NBRC1777
Molecular Biotechnology, 2012Xylitol dehydrogenase (XDH) (EC 1.1.1.9) is one of the key enzymes in the xylose fermentation pathway in yeast and fungi. A xylitol dehydrogenase gene (XYL2) encoding a XDH was cloned from Kluyveromyces marxianus NBRC 1777, and the in vivo function was validated by disruption and complementation analysis. The highest activity of KmXDH could be observed
Li, Lulu +6 more
openaire +2 more sources
Bioprocess and Biosystems Engineering, 2021
L-Xylulose is a rare ketopentose which inhibits α-glucosidase and is an indicator of hepatitis or liver cirrhosis. This pentose is also a precursor of other rare sugars such as L-xylose, L-ribose or L-lyxose. Recombinant E. coli expressing xylitol-4-dehydrogenase gene of Pantoea ananatis was constructed.
Mesfin Angaw, Tesfay +6 more
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L-Xylulose is a rare ketopentose which inhibits α-glucosidase and is an indicator of hepatitis or liver cirrhosis. This pentose is also a precursor of other rare sugars such as L-xylose, L-ribose or L-lyxose. Recombinant E. coli expressing xylitol-4-dehydrogenase gene of Pantoea ananatis was constructed.
Mesfin Angaw, Tesfay +6 more
openaire +2 more sources
Isolation and characterization of two xylitol dehydrogenases from Aspergillus niger
Microbiology, 1994An NADPH-dependent L-xylulose reductase [xylitol:NADP 4-oxidoreductase; EC 1.1.1.10 (LXDH)] from Aspergillus niger was purified and characterized. It is an octamer with a monomeric molecular mass of 32 kDa, showing high specificity for L-xylulose, xylitol and NADP(H).
Witteveen, C.B.F. +3 more
openaire +1 more source
Journal of Agricultural and Food Chemistry, 2013
Gluconobacter oxydans is known to be a suitable candidate for producing xylitol from d-arabitol. In this study, the enzyme responsible for reducing d-xylulose to xylitol was purified from G. oxydans NH-10 and characterized as xylitol dehydrogenase.
Jinliang, Zhang +5 more
openaire +2 more sources
Gluconobacter oxydans is known to be a suitable candidate for producing xylitol from d-arabitol. In this study, the enzyme responsible for reducing d-xylulose to xylitol was purified from G. oxydans NH-10 and characterized as xylitol dehydrogenase.
Jinliang, Zhang +5 more
openaire +2 more sources