Yeast interaction on Chardonnay wine composition: Impact of strain and inoculation time

•Every species can be described by a unique pattern of metabolites reflecting major differences between species regarding yeast metabolism.•S. cerevisiae is characterized by a metabolic richness not found with non-Saccharomyces yeasts.•The dominance of Saccharomyces cerevisiae is dependent on inocul...

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Bibliographic Details
Published in:Food chemistry 2022-04, Vol.374, p.131732-131732, Article 131732
Main Authors: Roullier-Gall, C., Bordet, F., David, V., Schmitt-Kopplin, P., Alexandre, H.
Format: Article
Language:English
Subjects:
Chardonnay wine
Fermentation
Inoculation time
Metabolomics
Saccharomyces cerevisiae
Sequential fermentation
Vitis
Wine - analysis
Yeast, Dried
Yeast-yeast interaction
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Summary:•Every species can be described by a unique pattern of metabolites reflecting major differences between species regarding yeast metabolism.•S. cerevisiae is characterized by a metabolic richness not found with non-Saccharomyces yeasts.•The dominance of Saccharomyces cerevisiae is dependent on inoculation time and on the other species present.•Co-inoculation leads to the formation of new compounds, reflecting a reshuffling of yeast metabolism linked to interaction mechanisms.•Metabolomic analysis unravels changes in nitrogen metabolism due to yeast-yeast interactions. It is of great importance to understand the molecular characteristics and substantial chemical transformations due to yeast-yeast interaction. Non-targeted metabolomics was used to unravel must in fermentation composition, inoculated with non-Saccharomyces (NS) yeasts and Saccharomyces cerevisiae (S) for sequential fermentation. ultrahigh-resolution mass spectrometry was able to distinguish thousands of metabolites and provides deep insights into grape must composition allowing better understanding of the yeast-yeast interactome. The dominance of S, characterized by a metabolic richness not found with NS, is dependent on inoculation time and on the yeast species present. Co-inoculation leads to the formation of new compounds, reflecting a reshuffling of yeast metabolism linked to interaction mechanisms. Among the modifications observed, metabolomic unravels deep changes in nitrogen metabolism due to yeast-yeast interactions and suggests that the redistribution pattern affects two different routes, the pentose phosphate and the amino acid synthesis pathways.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2021.131732