Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Not your ordinary yeast: non-Saccharomyces yeasts in wine production uncovered
Author: Jolly, N.
Varela, C.
Pretorius, I.
Citation: FEMS Yeast Research, 2014; 14(2):215-237
Publisher: Wiley-Blackwell
Issue Date: 2014
ISSN: 1567-1356
Statement of
Neil P. Jolly, Cristian Varela, Isak S. Pretorius
Abstract: Saccharomyces cerevisiae and grape juice are ‘natural companions’ and make a happy wine marriage. However, this relationship can be enriched by allowing ‘wild’ non- Saccharomyces yeast to participate in a sequential manner in the early phases of grape must fermentation. However, such a triangular relationship is complex and can only be taken to ‘the next level’ if there are no spoilage yeast present and if the ‘wine yeast’ – S. cerevisiae – is able to exert its dominance in time to successfully complete the alcoholic fermentation. Wine- makers apply various ‘matchmaking’ strategies (e.g. cellar hygiene, pH, SO 2 , temperature and nutrient management) to keep ‘spoilers’ (e.g. Dekkera bruxell- ensis ) at bay, and allow ‘compatible’ wild yeast (e.g. Torulaspora delbrueckii, Pichia kluyveri, Lachancea thermotolerans and Candida/Metschnikowia pulcherr- ima ) to harmonize with potent S. cerevisiae wine yeast and bring the best out in wine. Mismatching can lead to a ‘two is company, three is a crowd’ scenario. More than 40 of the 1500 known yeast species have been isolated from grape must. In this article, we review the specific flavour-active characteristics of those non- Saccharomyces species that might play a positive role in both spontaneous and inoculated wine ferments. We seek to present ‘single-species’ and ‘multi-species’ ferments in a new light and a new context, and we raise important questions about the direction of mixed-fermentation research to address market trends regarding so-called ‘natural’ wines. This review also highlights that, despite the fact that most frontier research and technological developments are often focussed primarily on S. cerevisiae , non- Saccharomyces research can benefit from the techniques and knowledge developed by research on the former.
Keywords: Non- Saccharomyces; yeasts; wine; aroma; flavour; fermentation.
Rights: © 2013 Federation of European Microbiological Societies.
DOI: 10.1111/1567-1364.12111
Appears in Collections:Agriculture, Food and Wine publications
Aurora harvest 7

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.