Macrowine 2021
IVES 9 IVES Conference Series 9 Red wine oxidation: oxygen consumption kinetics and high resolution uplc-ms analysis

Red wine oxidation: oxygen consumption kinetics and high resolution uplc-ms analysis

Abstract

Oxygen is playing a major role in wine ageing and conservation. Many chemical oxidation reactions occur but they are difficult to follow due to their slow reaction times and the numerous resulting reaction products. There is a need for global and rapid in vitro tests to predict wine oxidation kinetics. First, three different forced oxidation protocols were developed on a “young” (2018) red wine to follow the consumption of oxygen. After oxygen saturation of the wines at 22°C, the red wines were oxidized following 3 different protocols

1 – heat at 60°C

2 –laccase oxidation at 22°C

3 –hydrogen peroxide oxidation at 22°C

The oxygen consumption kinetics were followed by oxo-luminescence oxygen measurements. The oxygen consumption all followed a first order kinetic on the 2018 wine but had different kinetics constants depending on the oxidation protocol. High resolution UPLC-MS was also performed on forced oxidation samples and compared to natural oxidation samples of naturally aged red wines (2014 and 2010 vintages). Specific polyphenols (anthocyanins, flavanols and their derivatives) were impacted in both naturally or artificially aged wines and differed depending on the oxidation protocol. For example, the intensity of some low molecular weight polyphenols increased both in naturally or artificially heated aged wines ([M+H]+= 287; 289; 291; 303; 317; 319). However, some differences were observed between natural and artificial aging for higher molecular weight polyphenols ([M+H]+= 493; 535; 639)

DOI:

Publication date: September 13, 2021

Issue: Macrowine 2021

Type: Article

Authors

Stacy Deshaies

SPO, Univ Montpellier, INRA, Montpellier SupAgro, Montpellier, France.,Guillaume CAZALS: IBMM, Univ Montpellier, Montpellier, France  Christine ENJALBAL: IBMM, Univ Montpellier, Montpellier, France  François GARCIA :SPO, Univ Montpellier, INRA, Montpellier SupAgro, Montpellier, France. Laetitia MOULS: SPO, Univ Montpellier, INRA, Montpellier SupAgro, Montpellier, France. Cédric SAUCIER: SPO, Univ Montpellier, INRA, Montpellier SupAgro, Montpellier, France.

Contact the author

Keywords

wine; oxidation; polyphenol; syrah; mass spectrometry; oxygen; vintage; markers

Citation

Related articles…

Consistency of the hydraulic traits and stomatal responses in grapevines with contrasting hydraulic vulnerability

Different from wild species in arid and semiarid conditions, cultivated species are very sensitive to drought and, beyond some stress thresholds, food production is not possible

Read More

YEAST LEES OBTAINED AFTER STARMERELLA BACILLARIS FERMENTATION AS A SOURCE OF POTENTIAL COMPOUNDS TO IMPROVE SUSTAINABILITY IN WINE- MAKING

The yeast residue left over after wine-making, known as wine yeast lees, is a source of various compounds that are of interest for wine and food industry. In winemaking, yeast-derived glycocompounds and proteins represent an example of circular economy approach since they have been proven to reduce the need for bentonite and animal-based fining agents. This leads to a reduced environmental impact in the stabilization and fining processes in winemaking. (de Iseppi et al., 2020, 2021).

Read More

Cultures des vignobles en forte pente: possibilités de mécanisation. Effet de l’exposition et de l’orientation des rangs

Plus de la moitié du vignoble suisse (14’000 ha) est situé sur des coteaux en forte pente (> 30%). Dans certains vignobles, la pente naturelle du terrain a été réduite par la construction de terrasses soutenues par des murs.

Read More

Service crop effects on grapevine water and nitrogen status and yield under Mediterranean climate

Service crops in vineyard can provide multiple ecosystem services but they can also lead to competition with the grapevine for soil resources in the Mediterranean region due to potential severe droughts (Garcia et al., 2018). One of the levers of action to manage this competition is the choice of species adapted in terms of growth dynamics and water and nutrients’ needs. The objectives of this study were to determine the effect of temporary service crops on grapevine water and nitrogen status and grapevine yield and yield components in a Mediterranean vineyard.

Read More

Effect of vine nitrogen status on grape and wine quality: Terroir study in the Vaud vineyard (Switzerland)

This study was conducted on soil-climate-plant relations (terroir) and their impact on grape composition and wine quality in the canton of Vaud by Agroscope Changins-Wädenswil ACW

Read More