Journal
BIOTECHNOLOGY ADVANCES
Volume 31, Issue 2, Pages 257-265Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biotechadv.2012.11.005
Keywords
Redox potential; Metabolism; Electron transfer; Product profiles; Ethanol fermentation; Butanol production
Categories
Funding
- Natural Sciences Foundation of China [20276038]
- National High-Tech R & D Program of China [2012AA021205]
- China Postdoctoral Science Foundation [2012M510809]
- Natural Sciences and Engineering Research Council of Canada
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Many fermentation products are produced under microaerobic or anaerobic conditions, in which oxygen is undetectable by dissolved oxygen probe, presenting a challenge for process monitoring and control. Extracellular redox potentials that can be detected conveniently affect intracellular redox homeostasis and metabolism, and consequently control profiles of fermentation products, which provide an alternative for monitoring and control of these fermentation processes. This article reviews updated progress in the impact of redox potentials on gene expression, protein biosynthesis and metabolism as well as redox potential control strategies for more efficient production of fermentation products, taking ethanol fermentation by the yeast Saccharomyces under microaerobic conditions and butanol production by the bacterium Clostridium under anaerobic conditions as examples. (C) 2012 Elsevier Inc. All rights reserved.
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