Yeast interactions with anthocyanins during red wine fermentation.

Dublin Core

Title

Yeast interactions with anthocyanins during red wine fermentation.

Subject

VINOS
VINOS ROJOS
FERMENTACION
BIBLIOGRAFIA NACIONAL QUIMICA
2005

Abstract

The capacity of yeast to modify anthocyanin concentration during red wine fermentation was studied with the objective of classifying yeast strains according to their capacity for color removal during vinification. A model red grape juice medium was used to better understand yeast-anthocyanin interactions. An anthocyanin extract of Vitis vinifera cv. Tannat was prepared from grape skins and diluted in a white must in order to obtain a red grape juice without solids. Anthocyanin removal was confirmed to be higher for compounds with higher polarity. Acylated anthocyanins (acetyl and p-coumaryl compounds) were differentially removed, and the percentage of removal for each compound was determined. Results showed no correlation between color intensity and total anthocyanin concentration after fermentation, possibly because of the presence of anthocyanin derivatives formed during the process. HPLC-MS analysis allowed identification of anthocyanin derivatives, while the quantification of several derivatives was performed by HPLC-DAD. The sum of these derivatives showed a direct correlation with the color intensity obtained with each strain, thus explaining the color variability observed.

Source

American Journal of Enology and Viticulture v. 56, no. 2, 2005. -- p. 104-109

Publisher

American Society for Enology and Viticulture

Date

2005

Rights

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Format

PDF

Language

Inglés

Type

Artículo

Identifier

ISSN: 0002-9254

Document Item Type Metadata

Original Format

PDF
Date Added
March 26, 2015
Collection
Bibliografía Nacional Química
Item Type
Document
Tags
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Citation
Medina, Karina et al., “Yeast interactions with anthocyanins during red wine fermentation.,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/2608.