The Impact of Saccharomyces cerevisiae on a Wine Yeast Consortium in Natural and Inoculated Fermentations

Frontiers in Microbiology
Bahareh BagheriMathabatha E Setati

Abstract

Natural, also referred to as spontaneous wine fermentations, are carried out by the native microbiota of the grape juice, without inoculation of selected, industrially produced yeast or bacterial strains. Such fermentations are commonly initiated by non-Saccharomyces yeast species that numerically dominate the must. Community composition and numerical dominance of species vary significantly between individual musts, but Saccharomyces cerevisiae will in most cases dominate the late stages of the fermentation and complete the process. Nevertheless, non-Saccharomyces species contribute significantly, positively or negatively, to the character and quality of the final product. The contribution is species and strain dependent and will depend on each species or strain's absolute and relative contribution to total metabolically active biomass, and will therefore, be a function of its relative fitness within the microbial ecosystem. However, the population dynamics of multispecies fermentations are not well understood. Consequently, the oenological potential of the microbiome in any given grape must, can currently not be evaluated or predicted. To better characterize the rules that govern the complex wine microbial ecosystem, a model y...Continue Reading

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Citations

Feb 2, 2019·Recent Patents on Food, Nutrition & Agriculture·Ludovic RoudilVittorio Capozzi
Oct 19, 2019·FEMS Yeast Research·C G ConacherF F B Bauer
Nov 30, 2018·Frontiers in Bioengineering and Biotechnology·Bahareh BagheriMathabatha Evodia Setati
Apr 10, 2021·Applied Microbiology and Biotechnology·C G ConacherF F Bauer
Jun 25, 2021·Journal of the Science of Food and Agriculture·Jelena Topić BožičBranka Mozetič Vodopivec
Aug 28, 2021·Microorganisms·Evangelia A Zilelidou, Aspasia Nisiotou

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Methods Mentioned

BETA
flow cytometry
ARISA
PCR
electrophoresis

Software Mentioned

Genemapper
XLSTAT
Excel
Automated Ribosomal Intergenic Spacer Analysis ( ARISA )
Statistica
ARISA

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