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Showing papers on "Arabitol published in 2009"


Journal ArticleDOI
TL;DR: Modelling of LadA and XdhA of the saprobic fungus Aspergillus niger on human SDH identified two residues in LadA, that may explain the absence of activity on D-sorbitol, that contribute significantly to the substrate specificity difference between LAD and XDH/SDH.
Abstract: Background L-arabitol dehydrogenase (LAD) and xylitol dehydrogenase (XDH) are involved in the degradation of L-arabinose and D-xylose, which are among the most abundant monosaccharides on earth. Previous data demonstrated that LAD and XDH not only differ in the activity on their biological substrate, but also that only XDH has significant activity on D-sorbitol and may therefore be more closely related to D-sorbitol dehydrogenases (SDH). In this study we aimed to identify residues involved in the difference in substrate specificity.

10 citations


Patent
08 Jan 2009
TL;DR: In this paper, a method for converting lactose into arabitol directly, which can prevent the production of glucose or galactose and which does not need any procedure for separating impurities is presented.
Abstract: In the conventional techniques for converting lactose contained in a whey into xylitol, a process for converting lactose into glucose and galactose with β-galactosidase is absolutely necessary, and the glucose is then converted into arabitol During the process, the reaction product may be contaminated with unreacted glucose or undesired galactose as an impurity, and therefore a procedure for separating the unreacted glucose or undesired galactose is also required Thus, the object is to develop a method for converting lactose into arabitol directly, which can prevent the production of glucose or galactose and which does not need any procedure for separating impurities A novel yeast strain is now found, which enables the conversion from lactose into arabitol