WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 4 - WAC - Oral presentations 9 Polyphenols in kombucha: Metabolomic analysis of biotransformations during fermentation

Polyphenols in kombucha: Metabolomic analysis of biotransformations during fermentation

Abstract

Kombucha is a non-alcoholic beverage made of sugared tea that is transformed by a symbiotic consortium of yeasts and bacteria. This beverage is increasingly produced at industrial scale, but its quality standards remain to be defined. Metabolomics analysis was carried out using FT-ICR-MS to understand the chemical transformations induced by the production phases and the type of tea on the non-volatile compounds of kombucha. Of the two production phases, the first phase of acidification in open vessel was the most impactful on molecular diversity, but tea type mainly influenced the global composition in polyphenol profiles. Black tea polyphenols were more impacted by microbial activity compared to green tea polyphenols. Independently from tea type, the first phase was also characterized by the release of gluconate from acetic acid bacteria metabolism. Gallate was also released and probably originated from the hydrolysis of ester bounds located in polymeric flavan-3-ols. The biotransformation of antioxidant polyphenols could positively impact their bioavailability for the consumer.

DOI:

Publication date: June 14, 2022

Issue: WAC 2022

Type: Article

Authors

Thierry, Tran, Rémy, Romanet, Chloé, Roullier-Gall, Antoine, Martin, Hervé, Alexandre,Cosette, Grandvalet, Tourdot-Maréchal, Philippe, Schmitt-Kopplin

Presenting author

Thierry, Tran – UMR PAM – Team VAlMiS

SATT Sayens, Chloé, Roullier-Gall | UMR PAM – Team VAlMiS, François, Verdier | Biomère | Biomère | Helmholtz Zentrum München | UMR PAM – Team VAlMiS | UMR PAM – Team VAlMiS | UMR PAM – Team VAlMiS 

Contact the author

Keywords

kombucha, metabolomics, polyphenols, bioavailability, fermentation

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Using a grape compositional model to predict harvest time and influence wine style

Linking wine composition to fruit composition is difficult due to the numerous biochemical pathways and substrate transformations that occur during fermentation

Soil electrical resistivity measurement: from terroir characterization to within-field crop inputs management

Soil Electrical Resistivity measurement is a zoning tool used by soil scientists and agronomists in viticulture. Indeed, the measure enables to optimize pedological surveys

Monitoring early rooting behavior of grapevine rootstocks: a 2D-imaging approach

The plasticity of grapevines in response to diverse growing conditions is influenced, among other factors, by the extent to which the roots explore the soil and the ability to accumulate and retrieve water and nutrients.
Newly planted grapevines, in particular, face challenges due to limited resources. The young plant’s ability for a fast and intensive penetration of the soil is vital in periods of water scarcity. The selection of an appropriate, site-specific rootstock significantly impacts both, the quality of the fruit produced and the economic success of the wine estate.

Physicochemical behaviour of wine spirit and wine distillate aged in Sherry Casks® and Brandy casks

Brandy is a spirit drink made from “wine spirit” (<86% Alcohol by Volume – ABV; high levels of congeners and they are mainly less volatile than ethanol), it may be blended with a “wine distillate” (<94.8%ABV; low levels of congeners and these are mainly more volatile than ethanol), as long as that distillate does not exceed a maximum of 50% of the alcoholic content of the finished product[1]. Brandy must be aged for at least 6 months in oak casks with <1000L of capacity. During ageing, changes occur in colour, flavour, and aroma that improve the quality of the original distillate.

Environmental influence on grape phenolic and aromatic compounds in a Nebbiolo selection (Vitis vinifera L.)

Nebbiolo (Vitis vinifera L.) is one of the most important wine red cultivar of North-west Italy. A better understanding of the complex relations among grape aromatic and phenolic maturity and environmental factors may strongly contribute to the improvement of the quality of Nebbiolo wines.