Sabrina Zimdars
Role of glutathione and Botrytis cinerea laccase activities in wine quality
- Cuvillier
- 2020
- Taschenbuch
- 122 Seiten
- ISBN 9783736972544
The grapevine Vitis vinifera is highly susceptible to fungal infections. This entails numerous problems in winemaking leading to a reduced wine quality. As a consequence of the application of copper-based fungicides, elevated copper levels in the grape must may cause stress conditions for Saccharomyces cerevisiae during fermentation. This work describes the influence of glutathione, a natural and potent antioxidant, on vinification of a copper- rich Riesling must. The results provide important information on the use of glutathione in winemaking as a tool to reduce negative effects of copper. Wine quality deterioration may also be attributed to the presence of laccase, which is secreted by Botrytis cinerea
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