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Bio-Protection as an Alternative to Sulphites: Impact on Chemical and Microbial Characteristics of Red Wines

Abstract : In wine, one method of limiting the addition of sulphites, a harmful and allergenic agent, is bio-protection. This practice consists of the early addition of microorganisms on grape must before fermentation. Non-Saccharomyces yeasts have been proposed as an interesting alternative to sulphite addition. However, scientific data proving the effectiveness of bio-protection remains sparse. This study provides the first analysis of the chemical and microbiological effects of a Metschnikowia pulcherrima strain inoculated at the beginning of the red winemaking process in three wineries as an alternative to sulphiting. Like sulphiting, bio-protection effectively limited the growth of spoilage microbiota and had no influence on the phenolic compounds protecting musts and wine from oxidation. The bio-protection had no effect on the volatile compounds and the sensory differences were dependent on the experimental sites. However, a non-targeted metabolomic analysis by FTICR-MS highlighted a bio-protection signature.
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https://hal.inrae.fr/hal-02907152
Déposant : Sabine Julien <>
Soumis le : lundi 27 juillet 2020 - 11:36:12
Dernière modification le : jeudi 27 août 2020 - 03:29:03

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Scott Simonin, Chloé Roullier-Gall, Jordi Ballester, Philippe Schmitt-Kopplin, Beatriz Quintanilla-Casas, et al.. Bio-Protection as an Alternative to Sulphites: Impact on Chemical and Microbial Characteristics of Red Wines. Frontiers in Microbiology, Frontiers Media, 2020, 11, pp.1308. ⟨10.3389/fmicb.2020.01308⟩. ⟨hal-02907152⟩

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