d-Glucose feeding for improvement of xylitol productivity from d-xylose using Candida tropicalis immobilized on a non-woven fabric

A non-woven fabric was successfully applied for immobilization of Candida tropicalis to produce xylitol from d-xylose. Xylitol productivity was enhanced by feeding of d-glucose (50 g/l·d); 87 g xylitol/L was produced after 64 h cultivation. Non-woven fabric could be used five times for fed-batch cultivation.