DIRECT FERMENTATION OF D-XYLOSE TO ETHANOL BY A XYLOSE-FERMENTING YEAST MUTANT

摘要

DIRECT FERMENTATION OF D-XYLOSE TO ETHANOLBY A XYLOSE-FERMENTING YEAST MUTANTABSTRACT OF THE DISCLOSUREA process for obtaining ethanol directly from D-xylosethrough fermentation of D-xylose by xylose-fermenting yeast mutants.The process provides for obtaining ethanol from hemicellulosehydrolyzates through yeast fermentation of D-xylose to ethanol. Inaddition, a process for producing yeast mutants capable of utilizing D-xylose to ethanol in high yields is described. Furthermore, the processalso provides for obtaining ethanol from a mixture of cellulose andhemicellulose hydrolyzates through yeast fermentation of D-glucose andD-xylose directly and simultaneously to ethanol.