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Xylitol Production by a Culture ofCandida guilliermondii2581
Authors:Zagustina  N A  Rodionova  N A  Mestechkina  N M  Shcherbukhin  V D  Bezborodov  A M
Institution:(1) Bach Institute of Biochemistry, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 117071, Russia
Abstract:The yeast strain Candida guilliermondii2581 was chosen for its ability to produce xylitol in media with high concentrations of xylose. The rate of xylitol production at a xylose concentration of 150 g/l is 1.25 g/l per h; the concentration of xylitol after three days of cultivation is 90 g/l; and the relative xylitol yield is 0.6 g per g substrate consumed. The growth conditions were found that resulted in the maximum relative xylitol yield with complete consumption of the sugar: xylose concentration, 150 g/l; pH 6.0; and shaking at 60 rpm. It was shown that the growth under conditions of limited aeration favors the reduction of xylose.
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