Aeration alleviates ethanol inhibition and glycerol production during fed-batch ethanol fermentation

被引：0
作者：
Hyeon-Beom Seo
Ji-Hyeon Yeon
Myung Hoon Jeong
Do Hyung Kang
Hyeon-Yong Lee
Kyung-Hwan Jung
机构：
[1] Chungju National University,Department of Biotechnology
[2] Kangwon National University,Division of Biomaterials Engineering
[3] Kangwon National University,Research Institute of Bioscience and Biotechnology
[4] Korea Ocean Research & Development Institute,undefined
来源：
Biotechnology and Bioprocess Engineering | 2009年 / 14卷
关键词：
bioethanol; aeration; fed-batch ethanol fermentation; ethanol inhibition; glycerol production;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, we investigated the effects of aeration on ethanol inhibition and glycerol production during fed-batch ethanol fermentation. When aeration was conducted at 0.13, 0.33, and 0.8 vvm, the ethanol productivity, specific ethanol production rate, and ethanol yield in the presence of greater than 100 g/L of ethanol were higher than when aeration was not conducted. In addition, estimation of the parameters (α and β) in a model equation of ethanol inhibition kinetics indicated that aeration alleviated ethanol inhibition against the specific growth rate and the specific ethanol production rate. Specifically, when aeration was conducted, the glycerol yield and specific glycerol production rate decreased approximately 50 and 70%, respectively. Finally, the results of this study indicated that aeration during fed-batch ethanol fermentation may improve the ethanol concentration in the final culture broth, as well as the ethanol productivity.
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页码：599 / 605
页数：6
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