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IVES 9 IVES Conference Series 9 THE EFFECT OF PRE-FERMENTATIVE GLYPHOSATE ADDITION ON THE METABOLITE PROFILE OF WINE

THE EFFECT OF PRE-FERMENTATIVE GLYPHOSATE ADDITION ON THE METABOLITE PROFILE OF WINE

Abstract

The synthetic herbicide glyphosate has been used extensively in viticulture over many decades to combat weeds. Despite this, the possible influence of residual glyphosate on both the alcoholic fermentation of grape juice and the subsequent metabolite profile of wines has not been investigated. In this study, Pinot noir juice supplemented with different concentrations of glyphosate (0 µg L-1, 10 µg L-1 and 1000 µg L-1) was fermented with commercial Saccharomyces cerevisiae yeast strains. Using a combination of analytical methods, 80 metabolites were quantified in the resulting wines. When the pre-fermentative grape juice was spiked with glyphosate at 1000 µg L-1, the concentrations of 21 of these were found to have decreased significantly in the finished wines. This study has shown for the first time that the presence of glyphosate during alcoholic fermentation by yeast influences the resulting wine metabolite profile.

DOI:

Publication date: February 9, 2024

Issue: OENO Macrowine 2023

Type: Poster

Authors

Jin Wang1, Emma Sherman2, Rebecca C. Deed1,3, Farhana Pinu2, Bruno Fedrizzi1

1. School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland, New Zealand
2. The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
3. School of Biological Sciences, University of Auckland, 3A Symonds St, Auckland, New Zealand

Contact the author*

Keywords

Glyphosate, Viticultural Management, Wine Metabolites, Fermentation

Tags

IVES Conference Series | oeno macrowine 2023 | oeno-macrowine

Citation

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