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Comparison of Ethanol Fermentation by Saccharomyces cerevisiae CHY1077 and Zymomonas mobilis CHZ2501 from Starch Feedstocks  

Choi, Giwook (Changhae Institute of Cassava & Ethanol Research, Changhae Ethanol Co., Ltd.)
Kang, Hyunwoo (Changhae Institute of Cassava & Ethanol Research, Changhae Ethanol Co., Ltd.)
Kim, Youngran (Chonbuk National University, School of Chemical Engineering)
Chung, Bongwoo (Chonbuk National University, School of Chemical Engineering)
Publication Information
Korean Chemical Engineering Research / v.46, no.5, 2008 , pp. 977-982 More about this Journal
Abstract
The production of ethanol by microbial fermentation as an alternative energy source has been of interest because of increasing oil price. Saccharomyces cerevisiae and Zymomonas mobilis are two of the most widely used ethanol producers. In this study, characteristics of ethanol fermentation by Saccharomyces cerevisiae CHY1077 and Zymomonas mobilis CHZ2501 was compared. Brown rice, naked barley, and cassava were selected as representatives of the starch-based raw materials commercially available for ethanol production. The volumetric ethanol productivities by Saccharomyces cerevisiae from brown rice, naked barley and cassava were $0.68g/l{\cdot}h$, $1.03g/l{\cdot}h$ and $1.28g/l{\cdot}h$ respectively. But for the Zymomonas mobilis, $2.19g/l{\cdot}h$(brown rice), $2.60g/l{\cdot}h$(naked barley) and $3.12g/l{\cdot}h$(cassava) were obtained. Zymomonas mobilis was more efficient strain for ethanol production than S. cerevisiae.
Keywords
Bioethanol; Zymomonas mobilis; Saccharomyces cerevisiae; Starch Feedstock;
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Times Cited By KSCI : 1  (Citation Analysis)
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