Abstract
The induction of aldose reductase and polyol dehydrogenase activities by d-xylose, l-arabinose, d-galactose and d-glucose was studied in the yeast-like organism Aureobasidium pullulans CCY 27-1-26. d-xylose and l-arabinose induced two distinct NADPH-dependent aldose reductases and the inducing saccharide was simultaneously the most efficient substrate for the corresponding enzymatic reaction. Polyol dehydrogenase induced by d-xylose, l-arabinose and d-galactose was strictly NAD+-dependent and required only xylitol as a substrate of the enzymatic reaction. l-Arabitol did not act as a substrate for l-arabinose-induced polyol dehydrogenase either in the presence of NAD+ or NADP+.
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