WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 3 - WAC - Posters 9 Bioprotection and oenological tannins association to protect Rosé wine color

Bioprotection and oenological tannins association to protect Rosé wine color

Abstract

The bioprotection of musts or grapes is a strategy for limiting sulfiting during winemaking and more specifically at pre-fermentative step. The most preconized yeasts in bioprotection mainly belong to Metschnikowia pulcherrima and Torulaspora delbrueckii species. While previous studies have demonstrated that bioprotectant non-Saccharomyces strains were able to protect musts and wines against microbial spoilage as well as sulfites, they cannot protect must against oxidation which appears to be the main limit of this practice.

A combination of antimicrobial activity through bioprotection (inoculation of a Metschnikowia pulcherrima strain on grapes) and the antioxidant properties of low amounts of sulfites or enological tannins have been tested in order to replace or diminish SO2 addition in rosé winemaking (grape variety Pinot Noir) at pre-fermentative steps. This experiment was carried out under cellar condition. Two enological tannins were tested: quebracho tannins belonging to the condensed tannins family and gall nuts tannins belonging to the hydrolysable gallotannins family. Results showed that combination of bioprotection with enological tannins protected rosé wine color similarly as the combination with SO2, which was not the case with bioprotection alone. The color differences observed cannot be explained neither by anthocyanins concentration, nor by phenolic composition of wines. Quebracho tannins seemed more efficient than gall nuts tannins to protect the color of bioprotected rosé wines.

DOI:

Publication date: June 27, 2022

Issue: WAC 2022

Type: Article

Authors

Maelys Puyo, Scott Simonin, Géraldine Klein, Jordi Ballester, Natalia Quijada-Morin, Hervé Alexandre, Raphaëlle Tourdot-Marechal

Presenting author

Maelys Puyo – UMR Procédés Alimentaires et Microbiologiques, Université de Bourgogne Franche- Comté/AgroSup Dijon, Institut Universitaire de la Vigne et du Vin Jules Guyot, rue Claude Ladrey, BP 27877, F-21000 Dijon, France

UMR Procédés Alimentaires et Microbiologiques, Université de Bourgogne Franche- Comté/AgroSup Dijon, Institut Universitaire de la Vigne et du Vin Jules Guyot, rue Claude Ladrey, BP 27877, F-21000 Dijon, France | Centre des Sciences du Goût et de l’Alimentation, UMR 6265 CNRS, UMR 1324 INRAUniversité de Bourgogne Franche Comté, 9 E Boulevard Jeanne d’Arc, F-21000 Dijon, France

Contact the author

Keywords

Bioprotection – Color – Rosé wine – Enological tannins

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Effect of climate and soil on phenology and ripening of Vitis vinifera cv Touriga acional in the Dão region

“Terroir” has been acknowledged as an important factor in wine quality
and style. It can be defined as an interaction between climate, soil, vine (cultivar, rootstock) and human
factors such as viticultural and enological techniques. Soil and climate are the two components of the “Terroir” with an important role on the vine development and berries ripening. The present study is focused on the effects of the weather conditions and the soil characteristics on the phenological and berries ripening dynamics of the “Touriga Nacional” in Dão region.

A microbial overview of txakoli wine: the case of three appellations of origin

The Txakoli, a white wine produced in the Basque Country (North of Spain), has recently gained popularity due to wine quality improvement and increase in both acreages of production and wine consumption. The aim of this study was to characterize the chemical and microbiological differences between Txakoli wines made with grapes from different sites.

Le aree viticole storiche nel mondo: i loro vitigni, la loro protezione e la tipicità dei vini in esse ottenuti

Il tema da trattare si riferisce ai vari ecosistemi viticoli mondiali, ovviamente non facilmente sintetizzabili in una relazione. Sostanzialmente si richiama

Towards an ecological architecture inspired by underground cellars: An example of the thermal inertia of Moldovan underground cellars and new geothermal and Canadian well approaches

The search for underground shelters is one of the oldest forms of human habitation, providing refuge in extreme environments such as deserts and polar regions.

Le zonage viticole en Italie. État actuel et perspectives futures

Over the past few decades, viticultural research has made numerous contributions which have made it possible to better understand the behavior of the vine as well as its response to the conditions imposed on it by the environment and agronomic practices. However, these results have only rarely been used in the practical management of vineyards because the research has been carried out using partial experimental models where reality is only represented by a few factors which are sometimes even made more complex by the introduction of elements foreign to the existing situation and difficult to apply to production (varieties, methods of cultivation, management techniques, etc.). To these reasons, one could add a low popularization of the results obtained, as well as the difficulty of implementing the scientific contributions, which does not allow the different production systems to fully express their potential. This limit of viticultural research can only be exceeded by the design of integrated projects designed directly on and for the territory. Indeed, only the integrated evaluation of a viticultural agro-system, which can be achieved through zoning, makes it possible to measure, or even attribute to each element of the system, the weight it exerts on the quality of the wine.