New Research on Wine Microbiology

A special issue of Fermentation (ISSN 2311-5637). This special issue belongs to the section "Fermentation for Food and Beverages".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 1845

Special Issue Editors

Department of Viticulture and Enology, California State University, 2360 E. Barstow Avenue, Fresno, CA 93740, USA
Interests: wine; fermentation; Saccharomyces cerevisiae; wine quality; wine safety

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Guest Editor
Grape and Wine Institute, University of Missouri, 223 Eckles Hall, Columbia, MO 65211, USA
Interests: wine; fermentation; Saccharomyces cerevisiae; wine quality; wine safety

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Guest Editor
Department of Food Science, Cornell University, Ithaca, NY 14853, USA
Interests: antibacterial effect; wine microbiology

Special Issue Information

Dear Colleagues,

Wine production is a complex biochemical process that involves a large microbial community. Saccharomyces cerevisiae and Oenococcus oeni are traditionally the most utilized species. Influenced by geography, soil, climate, environmental factors, vineyard management, and winemaking practices, microbes play a critical role in shaping wine quality. Wine production can be improved by better understanding and managing microbial interactions. Recent technology has progressed our understanding of microbial communities, the relationship of microorganisms and enzymes, and addressed some oenological challenges, such as aiding clarification and filtration of juice, ethanol reduction, reducing the need for bentonite, improving wine acidity, color, and aromatic complexity.

The main focus of this Special Issue is to highlight the latest advances on the following areas:

  • Strain selection and genetic modification of Saccharomyces cerevisiae and lactic acid bacteria;
  • Effects of non-Saccharomyces yeasts, new lactic acid bacteria, and mixed-culture fermentations on wine quality;
  • The impact of vineyard management on grape microbial communities and wine fermentation;
  • The impact of microbial biogeography on wine quality and regionality;
  • Biotechnological strategies to improve wine production and safety.

If you are willing to contribute with other related topics, please contact one of the editors.

Dr. Qun Sun
Dr. Stephan Sommer
Dr. Patrick A. Gibney
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fermentation is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • alcoholic fermentation
  • malolactic fermentation
  • Saccharomyces cerevisiae
  • non-Saccharomyces species
  • lactic acid bacteria
  • microbial communities
  • enzyme
  • wine quality
  • wine safety

Published Papers (1 paper)

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Research

20 pages, 1796 KiB  
Article
Understanding the Contribution of Co-Fermenting Non-Saccharomyces and Saccharomyces Yeasts to Aroma Precursor Degradation and Formation of Sensory Profiles in Wine Using a Model System
by Doreen Schober, Michael Wacker, Hans-Georg Schmarr and Ulrich Fischer
Fermentation 2023, 9(11), 931; https://doi.org/10.3390/fermentation9110931 - 26 Oct 2023
Viewed by 1358
Abstract
Comprehensive yeast strain characterization is an important issue for the wine industry as market demands require controlled production of distinctive high-quality wines. Glycosides form an important reservoir of varietal grape wine aroma, and their hydrolysis into olfactory-active compounds essentially depends on the fermenting [...] Read more.
Comprehensive yeast strain characterization is an important issue for the wine industry as market demands require controlled production of distinctive high-quality wines. Glycosides form an important reservoir of varietal grape wine aroma, and their hydrolysis into olfactory-active compounds essentially depends on the fermenting yeast genera and strains. Among the 14 Metschnikowia, Pichia, Torulaspora and 18 Saccharomyces spp., rapid screenings by agar plate and activity assay, including the substrates arbutin, cellobiose and p-nitrophenol-β-D-glucopyranoside, revealed the most glycosidase-active strains. In the novel co-fermentation setups, five selected non-Saccharomyces and a Saccharomyces strain were separated by a 14 kDa cut-off membrane, allowing respective viable cell counts but facilitating metabolite transfer. Chemical analysis focused on aroma glycosides, with extensive quantification by GC-MS with SIDA on the extracted and hydrolyzed compounds. Olfactory profiles obtained for the non-Saccharomyces wines demonstrated a significant impact of these yeasts, albeit mainly correlated with increased hydrolysis of monoterpene glycosides, and surpassed by a technical Aspergillus niger enzyme. While screenings of non-Saccharomyces strains indicated enhanced glucosidase activity under winemaking conditions, their effect was lower than expected and dominated by ester formation. Interestingly, Saccharomyces yeast cell vitality was increased via in co-fermentation, and non-Saccharomyces strains displayed extended viabilities with high ethanol tolerances. Full article
(This article belongs to the Special Issue New Research on Wine Microbiology)
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