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Reference: Adaptation of two groups of Oenococcus oeni strains to red and white wines- the role of acidity and phenolic compounds
Key Statements

Abstract-

Aims
Oenococcus oeni is the lactic acid bacteria species which is the most adapted to wine. Recently, two groups of strains that form two genetic lineages were described in red and white Burgundy wines. The aim of this study was to analyze the phenotypes of these strains in order to determine how they have adapted specifically to either red or white wines.
Methods and Results
Four strains from each group were tested in grape must and in wines to evaluate their tolerance to pH and to phenolic compounds content. White wine strains proved to be the most tolerant to low pH, both in grape must and in wine, whereas they were inhibited by the presence of grape tannins in wine. Red wine strains were more sensitive to acidity, but very resistant to phenolic compounds.
Conclusions
The results suggest that pH and phenolic compounds drive strains selection at several stages of wine production.
Significance and Impact of the study
Although it is well known that O. oeni is well adapted to wine, this study shows that strains of some genetic lineages within this species have evolved to adapt better than others to specific types of wines.


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Link to paper-

https://onlinelibrary.wiley.com/doi/abs/10.1111/jam.13946

https://doi.org/10.1111/jam.13946


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Publication Details

Published: 2018
Publication: Journal of Applied Microbiology
Issue: 2018 Online June 2018
Author: Breniaux M 2018
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