Mixed yeast communities contribute to regionally distinct wine attributes

Hawkins, Diana Lynne, Ryder, Jess, Lee, Soon A. , Parish-Virtue, Katie, Fedrizzi, Bruno, Goddard, Matthew and Knight, Sarah J. (2023) Mixed yeast communities contribute to regionally distinct wine attributes. FEMS Yeast Research . ISSN 1567-1356

Full content URL: https://doi.org/10.1093/femsyr%2Ffoad005

Mixed yeast communities contribute to regionally distinct wine attributes
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Hawkins et al FEMS YR 2023.pdf - Whole Document
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Item Type:Article
Item Status:Live Archive


There is evidence that vineyard yeast communities are regionally differentiated, but the extent to which this contributes to wine regional distinctiveness is not yet clear. This study represents the first experimental test of the hypothesis that mixed yeast communities—comprising multiple, region-specific, isolates and species—contribute to regional wine attributes. Yeast isolates were sourced from uninoculated Pinot Noir fermentations from 17 vineyards across Martinborough, Marlborough and Central Otago in New Zealand. New methodologies for preparing representative, mixed species inoculum from these significantly differentiated regional yeast communities in a controlled, replicable manner were developed and used to inoculate Pinot Noir ferments. Twenty-eight yeast-derived aroma compounds were measured in the resulting wines via Headspace Solid-Phase Microextraction coupled with Gas Chromatography-Mass Spectrometry. Yeast community region of origin had a significant impact on wine aroma, explaining ∼10% of the observed variation, which is in line with previous reports of the effects of region-specific S. cerevisiae isolates on Sauvignon Blanc ferments. This study shows that regionally distinct, mixed yeast communities can modulate wine aroma compounds in a regionally distinct manner and are in line with the hypothesis that there is a microbial component to regional distinctiveness, or terroir, for New Zealand Pinot Noir.

Keywords:terroir, wine, yeast, fermentation, pinot noir, New Zealand
Subjects:D Veterinary Sciences, Agriculture and related subjects > D711 Agricultural Microbiology
D Veterinary Sciences, Agriculture and related subjects > D630 Food and Beverage Production
Divisions:College of Science > School of Life and Environmental Sciences > Department of Life Sciences
ID Code:53293
Deposited On:10 Feb 2023 14:01

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