IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Red wine oxidation study by accelerating ageing tests and electrochemical method

Red wine oxidation study by accelerating ageing tests and electrochemical method

Abstract

Red wines can undergo many undesirable changes during the winemaking process and storage, particularly oxidative degradation due to numerous atmospheric oxygen intakes. This spoilage can impact organoleptic properties and color stabilization but this impact depends on the wine composition. Phenolic compounds constitute primary targets to oxidation reactions.
In order to obtain information on the oxidative behavior of red wines, oxygen consumption rates and electrochemical modifications (obtained by cyclic voltammetry) were measured for nine red wines subject to three different accelerated ageing tests (after wine air saturation). Chemical test (hydrogen peroxide add), enzymatic test (laccase from Trametes versicolor add) and temperature test (heat at 60°C) were carried out. Global phenolic composition, metals (Fe and Cu) and free SO2 concentrations were also determined. 
The obtained results showed oxidative behavior depended both on the wine sample and accelerated ageing test type. Good correlations were obtained between electrochemical parameters (charges at different potentials related to reductive properties) for non-oxidized wines and their variation after enzymatic and temperature tests, meaning that cyclic voltammetry could be used in order to predict these two oxidation tests and reflect the wine sensitivity towards respective oxidation targets. To strengthen this, good correlations were also obtained between the electrochemical parameters of the initial wines and oxygen consumption rates for these two tests. However, it was not possible to predict wine chemical oxidation test based on hydrogen peroxide from the electrochemical measurements.

DOI:

Publication date: June 24, 2022

Issue: IVAS 2022

Type: Poster

Authors

Garcia François1, Deshaies Stacy1, Garcia Luca1, Veran Frédéric2, Mouls Laetitia1 and Saucier Cédric1

1SPO-University of Montpellier
2SPO-INRAE Montpellier

Contact the author

Keywords

cyclic voltammetry; phenolic compounds; red wine; oxygen consumption rate; oxidation

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Influence of the “terroir” (soil, climate and wine grower) on the quality of red Grenache wines in the Rhône Valley

«L’Observatoire Grenache» est un réseau de parcelles qui a été mis en place par l’Institut Rhodanien en Vallée du Rhône sur les millésimes de 1995 à 1999. Composé de 24 parcelles de Vitis vinifera L. cv Grenache noir, ce réseau vise à étudier l’influence du terroir (sol, climat et vigneron) sur la qualité des vins. Les parcelles ont été choisies afin de représenter différentes situations géographiques et géopédologiques de la vallée du Rhône. Le matériel végétal (clone, porte-greffe), la taille (cordon de Royat), la densité et l’âge de la parcelle ont été encadrées. Ainsi les conditions de milieu (sol, climat) et les pratiques du vigneron étaient les principales sources de variations.
Read More

Tokaj zonation, traditions and future prospects

La superficie actuelle de l’ensemble des vignobles est de 5.293 ha qui est repartie dans 27 communes (données officielles du Conseil National des Communes de montagnes).

Read More

Climate and the evolving mix of grape varieties in Australia’s wine regions

The purpose of this study is to examine the changing mix of winegrape varieties in Australia so as to address the question: In the light of key climate indicators and predictions of further climate change, how appropriate are the grape varieties currently planted in Australia’s wine regions? To achieve this, regions are classified into zones according to each region’s climate variables, particularly average growing season temperature (GST), leaving aside within-region variations in climates. Five different climatic classifications are reported. Using projections of GSTs for the mid- and late 21st century, the extent to which each region is projected to move from its current zone classification to a warmer one is reported. Also shown is the changing proportion of each of 21 key varieties grown in a GST zone considered to be optimal for premium winegrape production. Together these indicators strengthen earlier suggestions that the mix of varieties may be currently less than ideal in many Australian wine regions, and would become even less so in coming decades if that mix was not altered in the anticipation of climate change. That is, grape varieties in many (especially the warmest) regions will have to keep changing, or wineries will have to seek fruit from higher latitudes or elevations if they wish to retain their current mix of varieties and wine styles.

Read More

Il sistema vigneto del Lago di Bolsena: caratterizzazione della produzione di Cannaiola di Marta

Il comprensorio del Lago di Bolsena (VT) è un territorio ad elevata vocazione vitivinicola in cui il paesaggio della vite storicamente persiste e caratterizza la fisionomia dei luoghi. Qui gli agroecosistemi viticoli possiedono una valenza ecologico-ambientale, storico-culturale ed economica di rilievo.

Read More

Effects of water and nitrogen uptake, and soil temperature, on vine development, berry ripening and wine quality of Cabernet-Sauvignon, Cabernet franc and Merlot (Saint-Emilion, 1997)

Wine quality depends largely on berry ripening conditions in relation to soil and climat. The influence of the soil has been studied in Bordeaux since the early Seventies (SEGUIN, 1970; DUTEAU et al., 1981; VAN LEEUWEN, 1991; VAN LEEUWEN et SEGUIN, 1994) and, more recently, in the Val de Loire (MORLAT, 1989), the Alsace (LEBON, 1993) and the Costières de Nîmes regions (MARTIN, 1995).

Read More