Cited by 161Fermentation and Sensory AnalysisMicrobial Metabolic Engineering and BioproductionFungal and yeast genetics research

Decreasing acetic acid accumulation by a glycerol overproducing strain of Saccharomyces cerevisiae by deleting the ALD6 aldehyde dehydrogenase gene

Eglinton, Jeffrey M., Heinrich, Anthony J., Pollnitz, Alan P., Langridge, Peter, Henschke, Paul A., de Barros Lopes, Miguel·2002·Yeast

Abstract

Glycerol is a major fermentation product of Saccharomyces cerevisiae that contributes to the sensory character of wine. Diverting sugar to glycerol overproduction and away from ethanol production by overexpressing the glycerol 3‐phosphate dehydrogenase gene,GPD2, caused S. cerevisiae to produce more than twice as much acetic acid as the wild‐type strain (S288C background) in anaerobic cell culture. Deletion of the aldehyde dehydrogenase gene, ALD6, in wild‐type and GPD2 overexpressing strains (GPD2‐OP) decreased acetic acid production by three‐ and four‐fold, respectively. In conjunction with reduced acetic acid production, the GPD2‐OP ald6Δ strain produced more glycerol and less ethanol than the wild‐type. The growth rate and fermentation rate were similar for the modified and wild‐type strains, although the fermentation rate for the GPD2 ald6Δ strain was slightly less than that of the other strains from 24 h onwards. Analysis of the metabolome of the mutants revealed that genetic modification affected the production of some secondary metabolites of fermentation, including acids, esters, aldehydes and higher alcohols, many of which are flavour‐active in wine. Modification of GPD2 and ALD6 expression represents an effective strategy to increase the glycerol and decrease the ethanol concentration during fermentation, and alters the chemical composition of the medium such that, potentially, novel flavour diversity is possible. The implications for the use of these modifications in commercial wine production require further investigation in wine yeast strains. Copyright © 2002 John Wiley & Sons, Ltd.

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Crossref · 10.1002/yea.834

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  • A laboratory strain of Saccharomyces cerevisiae over-expressing GPD2 and lacking ALD6 produced more glycerol and less ethanol without an increase in acetic acid.

    “a laboratory strain of Saccharomyces cerevisiae over-expressing GPD2 and lacking ALD6 had the desired effect of producing more glycerol and less ethanol, without an increase in acetic acid (Remize et al. 2000, Eglinton et al. 2002).”

    From Yeast and bacterial modulation of wine aroma and flavour (2005) · cites this paper as Eglinton et al. 2002

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Authors
Eglinton, J. M., Heinrich, A. J., Pollnitz, A. P., Langridge, P., Henschke, P. A., & de Barros Lopes, M.
Affiliations
  • Australian Wine Research Institute (AU)
  • The University of Adelaide (AU)
Corresponding author
Eglinton, Jeffrey M.
Venue
Yeast
Publisher
Wiley
Published
2002-01-18
Volume
19
Issue
4
Pages
295-301
ISSN
  • 0749-503X (ISSN-L)
  • 1097-0061
OpenAlex
W2080704515
Cited by
160
References
23
Citations by year
2026: 1 · 2025: 5 · 2024: 14 · 2023: 2 · 2022: 4 · 2021: 6 · 2020: 8 · 2019: 8 · 2018: 5 · 2017: 10 · 2016: 10 · 2015: 5 · 2014: 4 · 2013: 4 · 2012: 11
FWCI
10.74
Type
journal article
Language
en
Open access
closed
Locations
  • Yeast (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Fermentation and Sensory Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Saccharomyces cerevisiae, acetate accumulation, aldehyde dehydrogenase, glycerol-3-phosphate dehydrogenase, wine yeast, wine flavor, ethanol production, secondary metabolites, anaerobic fermentation
MeSH terms
Aldehyde Dehydrogenase, Fermentation, Glycerol, Glycerolphosphate Dehydrogenase, Saccharomyces cerevisiae, Gene Deletion, Acetic Acid

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