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Mezcal as a Novel Source of Mixed Yeasts Inocula for Wine Fermentation

De la Torre-González, Francisco Javier and Narváez-Zapata, José Alberto and Taillandier, Patricia and Larralde-Corona, Claudia Patricia Mezcal as a Novel Source of Mixed Yeasts Inocula for Wine Fermentation. (2020) Processes, 8 (10). 1296. ISSN 2227-9717

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Official URL: https://doi.org/10.3390/pr8101296

Abstract

Mezcal yeasts were evaluated for their potential as grape-juice fermenters, characterizing their fermentation performance, both in terms of primary and volatile metabolites. Experiments were first carried-out in a semi-synthetic medium and then on grape juice, and population dynamics of the chosen mixed inoculum was assessed in grape juice. Accordingly, we initially tested 24 mezcal yeasts belonging to ten different species, and chose those that were more productive and stress tolerant for the mixed (dual) inoculum, having a final selection of three Saccharomyces cerevisiae strains (plus Fermichamp, a commercial wine strain) and three non-Saccharomyces strains, belonging to Kluyveromyces marxianus, Torulaspora delbrueckii, and Zygosaccharomyces bailii species. For the combination S. cerevisiae/T. delbrueckii (Sc/Td) mixed inoculum, we observed increasing isoamyl alcohol and phenyl ethyl acetate concentrations, as compared with the use of individual Saccharomyces strains, which resulted in a fruitier aroma profile. Alcohol final concentration was in average lower for the Sc/Td inoculum (fermentation power, FP, 13.6) as compared with the individual mezcal Saccharomyces strains (FP 14.3), and it was the highest when Td was co-cultured with the commercial strain (FP 14.6). Overall, our results show the feasibility of using yeasts isolated from mezcal as a novel source of inoculum for wine-type fermentation.

Item Type:Article
Additional Information:This article belongs to the Special Issue Role of Yeast in Wine Fermentation Processes Licence : CC BY
HAL Id:hal-03115355
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Innovak Global (MEXICO)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Instituto Politécnico Nacional - IPN (MEXICO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Funders:
CONACYT (México)
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Deposited On:19 Jan 2021 14:39

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