Expanding the Diversity of Chardonnay Aroma Through the Metabolic Interactions of Cocultures

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2023 Feb 27

PMID 36845971

Authors

Fanny Bordet

Remy Romanet

Florian Bahut

Jordi Ballester

Camille Eicher

Cristina Pena

Vicente Ferreira

Regis Gougeon

Anne Julien-Ortiz

Chloe Roullier-Gall

Herve Alexandre

Affiliations

Soon will be listed here.

Abstract

Yeast co-inoculations in winemaking are often studied in the framework of modulating the aromatic profiles of wines. Our study aimed to investigate the impact of three cocultures and corresponding pure cultures of on the chemical composition and the sensory profile of Chardonnay wine. Coculture makes it possible to obtain completely new aromatic expressions that do not exist in the original pure cultures attributed to yeast interactions. Esters, fatty acids and phenol families were identified as affected. The sensory profiles and metabolome of the cocultures, corresponding pure cultures and associated wine blends from both pure cultures were found to be different. The coculture did not turn out to be the addition of the two pure culture wines, indicating the impact of interaction. High resolution mass spectrometry revealed thousands of cocultures biomarkers. The metabolic pathways involved in these wine composition changes were highlighted, most of them belonging to nitrogen metabolism.

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