IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 New understanding on sulfites reactivity in wine

New understanding on sulfites reactivity in wine

Abstract

Sulfur dioxide is widely used during winemaking as an antioxidant and antimicrobial agent. Bisulfite (HSO3−), the predominant form of SO2 at wine pH, reacts with several wine components forming sulfonated adducts. Up to now, the compounds that react with SO2 are categorized into strong and weak binders, depending on the stability of the sulfonated adducts that they produce, meaning that compared to the strong binders, weak binders release easily SO2, and under oxidation conditions, they become a pool of free SO2 that will contribute later to wine’s oxidative stability. Carbonyl compounds have been well studied regarding their reaction with SO2, in contrast to peptides and sulfur containing compounds. In this work, 1H NMR spectroscopy has been used in order to monitor directly under wine-like acidic conditions, the kinetics of sulfonation reactions of carbonyls (acetaldehyde and pyruvic acid) and sulfur containing compounds (cysteine and glutathione) with different ratios of SO2 in aerobic and anaerobic conditions. These simulations of wine aging have shown first, that during aging sulfonation reactions to strong carbonyl binders are reversible inducing a decrease on total SO2 level. The dissociation of carbonyls from sulfites is occurred under all conditions. Second, thiol containing compounds appeared to play the key role as metabolic SO2 sink at the late stages of bottle aging. These, until now, unconsidered SO2 binders appeared stables under wine oxidation conditions and represent the truly waste fraction of sulfites during aging. This study puts under reconsideration the way of evaluating the strength of the SO2 binders and could possibly contribute to new strategies for SO2 management in winemaking.

DOI:

Publication date: June 23, 2022

Issue: IVAS 2022

Type: Article

Authors

Tachtalidou Sofia1, Spyros Apostolos2, Heinzmann Silke3, Sok Nicolas1, Noret Laurence1, Denat Frank4, Schmitt-Kopplin Philippe3, Gougeon Régis1 and Nikolantonaki Maria1

 1UMR PAM Université de Bourgogne/Agro Sup Dijon, Institut Universitaire de la Vigne et du Vin, Jules Guyot, 2 Rue Claude Ladrey, 21000, Dijon, France
2NMR Laboratory, Department of Chemistry, University of Crete, P.O. Box 2208, Voutes Campus, 71003, Heraklion, Crete, Greece
4Institut de Chimie Moléculaire de l’Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 21078 Dijon, France

Contact the author

Keywords

sulfur dioxide, acetaldehyde, glutathione, wine, oxidation

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

The opportunities offered by the climate change

Based on the results of experiments since 2000 at the Institut Agro Montpellier and at INRAE – Pech Rouge, and on the international experience acquired during scientific missions, a global reflection on the opportunities offered by climate change is proposed.

Read More

Agronomic and oenological characterization of the intraspecific cross ‘Passau’ in the aim of its commercial use

The study of new wine grape cultivars can be interesting to diversify the local wine productions without using international varieties. With this aim some Vitis vinifera intraspecific crosses obtained by Prof. Dalmasso in the 1930s and registered in the Italian National Catalogue in 1977, have been studied in the last years.

Read More

Study of the effect of native vineyard bacteria on the expression of Plasmopara viticolaeffectors

Downy mildew, caused by the oomycete Plasmopara viticola (Berk. & M.A. Curtis) Berl. & De Toni, is one of the most destructive grapevine diseases mostly affecting Vitis vinifera L. and impacting on viticulture. The pathogen invasion can induce in grapevine multiple defense reactions, first PAMP-Triggered Immunity and secondly Effector-Triggered Immunity. Plasmopara viticola can overcome these defense mechanisms through the secretion of effectors, such as RxLR, into the plant cells, making it easier for the oomycete to infect grapevines. Currently, the use of chemical pesticides remains the most effective way to control the pathogen with severe negative side effects on the environment and animal health.

Read More

Which microorganisms contribute to mousy off-flavour in our wines?

In this video recording of the IVES science meeting 2024, Mariona H Gil i Cortiella (Universidad Autónoma de Chile, Santiago de Chile, Chile) speaks about Which microorganisms contribute to mousy off-flavour in owines. This presentation is based on articles accessible for free on OENO One and IVES Technical Reviews.

Read More

FERMENTATION POTENTIAL OF INDIGENOUS NON-SACCHAROMYCES YEASTS ISOLATED FROM MARAŠTINA GRAPES OF CROATIAN VINEYARDS

The interest in indigenous non-Saccharomyces yeast for use in wine production has increased in recent years because they contribute to the complex character of the wine. The aim of this work was to investigate the fermentation products of ten indigenous strains selected from a collection of native yeasts established at the Institute for Adriatic Crops and Karst Reclamation in 2021, previously isolated from Croatian Maraština grapes, belonging to Hypopichia pseudoburtonii, Metschnikowia pulcherrima, Metschnikowia sinensis, Metschnikowia chrysoperlae, Lachancea thermotolerans, Pichia kluyveri, Hanseniaspora uvarum, Hanseniaspora guillermondii, Hanseniaspora pseudoguillermondii, and Starmerella apicola species, and compare it with commercial non-Saccharomyces and Saccharomyces strains.

Read More