Journal
ENZYME AND MICROBIAL TECHNOLOGY
Volume 43, Issue 3, Pages 233-236Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2008.04.003
Keywords
Saccharomyces cerevisiae; cell surface display; xylose fermentation; co-fermentation; beta-glucosidase
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Co-utilization of several sugars, especially xylose and glucose, is essential for economically feasible processes with high ethanol productivity. However, the majorproblem during xylose/glucose co-fermentation is that xylose is used very slowly until after glucose is completely consumed. Here, we demonstrated an effective co-fermentation process using xylose- and cellobiose-assimilating recombinant Saccharomyces cerevisiae. The recombinant yeast is able to consume xylose during xylose/cellobiose co-fermentation as rapidly as during glucose fermentation. After 72 h, 95.6% of xylose was consumed, despite the co-fermentation conditions, and the ethanol yield was 0.358 g-ethanol/g-total sugar. (C) 2008 Elsevier Inc. All rights reserved.
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