- Title
- The role of acetaldehyde and glycerol in the adaptation to ethanol stress of saccharomyces cerevisiae and other yeasts
- Creator
- Vriesekoop, Frank; Haass, C.; Pamment, Neville
- Date
- 2009
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/56900
- Identifier
- vital:1957
- Identifier
-
https://doi.org/10.1111/j.1567-1364.2009.00492.x
- Identifier
- ISSN:1567-1356
- Abstract
- Ethanol inhibition is a commonly encountered stress condition during typical yeast fermentations and often results in reduced fermentation rates and production yields. While past studies have shown that acetaldehyde addition has a significant ameliorating effect on the growth of ethanol-stressed Saccharomyces cerevisiae, this study investigated the potential ameliorating effect of acetaldehyde on a wide range of ethanol-stressed yeasts. Acetaldehyde does not appear to be a universal ameliorating agent for yeasts exposed to ethanol stress. It is also shown that as a result of an ethanol stress, most yeasts rapidly produce glycerol as an alternative means of NAD+ regeneration rather than having a specific requirement for glycerol. The results strongly suggest that both ethanol and acetaldehyde exposure have a direct effect on the cellular NAD+/NADH ratio, which can manifest itself as modulations in glycerol production. © 2009 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
- Relation
- FEMS Yeast Research Vol. 9, no. 3 (2009), p. 365-371
- Rights
- Copyright Blackwell Publishing
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- Acetaldehyde; Ethanol stress; Glycerol; Redox; Yeast
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