NDLI: High-level production of ethanol during fed-batch ethanol fermentation with a controlled aeration rate and non-sterile glucose powder feeding of Saccharomyces cerevisiae

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High-level production of ethanol during fed-batch ethanol fermentation with a controlled aeration rate and non-sterile glucose powder feeding of Saccharomyces cerevisiae

Content Provider	Springer Nature Link
Author	Seo, Hyeon Beom Kim, Seung Seop Lee, Hyeon Yong Jung, Kyung Hwan
Copyright Year	2009
Abstract	In this study, we utilized a unique strategy for fed-batch fermentation using ethanol-tolerant Saccharomyces cerevisiae to achieve a high-level of ethanol production that could be practically applied on an industrial scale. During this study, the aeration rate was controlled at 0.0, 0.13, 0.33, and 0.8 vvm to determine the optimal aeration conditions for the production of ethanol. Additionally, non-sterile glucose powder was fed during fed-batch ethanol fermentation and corn-steep liquor (CSL) in the medium was used as an organic N-source. When aeration was conducted, the ethanol production and productivity were superior to that when aeration was not conducted. Specifically, the maximum ethanol production reached approximately 160 g/L, when the fermentor was aerated at 0.13 vvm. These findings indicate that the use of a much less expensive C-source may enable the fermentation process to be directed towards the improvement of overall ethanol production and productivity in fermentors that are aerated at 0.13 vvm. Furthermore, if a repeated fed-batch process in which the withdrawal and fill is conducted prior to 36 h can be employed, aeration at a rate of 0.33 and/or 0.8 vvm may improve the overall ethanol productivity
Starting Page	591
Ending Page	598
Page Count	8
File Format	PDF
ISSN	12268372
Journal	Biotechnology and Bioprocess Engineering
Volume Number	14
Issue Number	5
e-ISSN	19763816
Language	English
Publisher	The Korean Society for Biotechnology and Bioengineering
Publisher Date	2009-11-05
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ethanol fermentation aeration non-sterile glucose feeding corn-steep liquor Industrial and Production Engineering Biotechnology
Content Type	Text
Resource Type	Article
Subject	Bioengineering Biomedical Engineering Applied Microbiology and Biotechnology Biotechnology

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