WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 4 - WAC - Posters 9 Polyphenols in kombucha: impact of infusion time on extraction and investigation of their behavior during “fermentation”

Polyphenols in kombucha: impact of infusion time on extraction and investigation of their behavior during “fermentation”

Abstract

Kombucha is a non-alcoholic beverage made of sugared tea that is transformed by a symbiotic consortium of yeasts and bacteria. Polyphenols are expected to be responsible of several health benefits attributed to kombucha consumption, among other metabolites. This study investigated the impact of tea infusion time and of kombucha “fermentation”, on total phenolic content, proanthocyanidins concentration and the color. It was determined that pH decrease during fermentation was the origin of kombucha color loss. Moreover, fermentation impacts the profile of black and green tea polyphenols more than infusion time between 30 minutes and 1 hour. Results suggest a significant release of phenolic compounds during “fermentation” possibly caused by the hydrolysis of molecular bounds, such as gallate ester bounds.

DOI:

Publication date: June 27, 2022

Issue: WAC 2022

Type: Article

Authors

Thierry Tran, Cosette Grandvalet, Antoine  Martin, Hervé Alexandre, Raphaëlle Tourdot-Maréchal

Presenting author

Thierry, Tran – UMR PAM – Team VAlMiS

UMR PAM – Team VAlMiS, Verdier, François | Biomère

Contact the author

Keywords

kombucha, polyphenols, color, fermentation, extraction

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Producer organisations at the service of the favourable chain of values to winegrowers and winemakers: the example of France

French law and European Union law recognise the existence of interprofessional organisations that bring together all the links in the wine industry.

Aroma profile evaluation in whole grape juices

Table grapes (Vitis labrusca and hybrids) are widely cultivated in Brazil [1] due to the climate, their resistance to disease and the way they are consumed and commercialized, either in-natura or for processing, producing whole juices, jams and table wines.

A fine scale study of temperature variability in the Saint-Emilion area (Bordeaux, France)

As the quality and typicity of wine are influenced by the climate, it is essential to have a good knowledge of climate variability, especially with regard to temperature, which has a great impact on vine behavior and grape ripening.

Viticultural climate effect on the sensorial perception of wines. Methodological elements for a modelling at a world level

The objective of this study was to develop a methodology capable of modeling the effect of viticultural climate on wine sensory characteristics.

Biodiversity in the vineyard agroecosystem: exploring systemic approaches

Biodiversity conservation and restoration are essential for guarantee the provision of ecosystem services associated to vineyard agroecosystem such as climate regulation trough carbon sequestration and control of pests and diseases. Most of published research dealing with the complexity of the vineyard agroecosystems emphasizes the necessity of innovative approaches, including the integration of information at different temporal and spatial scales and development of systemic analysis based on modelling. A biodiversity survey was conducted in the Franciacorta wine-growing area (Lombardy, Italy), one of the most important Italian wine-growing regions for sparkling wine production, considering a portion of the territory of 112 ha. The area was divided into several Environmental Units (EUs), defined as a whole vineyard or portion of vineyard homogenous in terms of four agronomic characteristics: planting year, planting density, cultivar, and training system. In each EU a set of compartments was identified and characterised by specific variables. The compartments are meteorology, morphology (altitude, slope, aspect, row orientation, and solar irradiance), ecological infrastructures and management. The landscape surrounding EU was also characterised in terms of land-use in a buffer zone of 500 m. For each component a specific methodology was identified and applied. Different statistical approaches were used to evaluate the method to integrate the information related to different compartments within the EU and related to the buffer zone. These approaches were also preliminarily evaluated for their ability to describe the contribution of biodiversity and landscape components to ecosystem services. This methodological exploration provides useful indication for the development of a fully systemic approach to structural and functional biodiversity in vineyard agroecosystems, contributing to promote a multifunctional perspective for the all wine-growing sector.