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  • Simon Nordestgaard, Australian Wine Research Institute
    VIDEO SEMINAR ENOFORUM 2018: Simon Nordestgaard conference at Enoforum 2018 summarise the latest research on wine storage and transport from around the world and provide practical guidance for prod...
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    Published on: 30/01/2019

DIAGNOSIS AND RECTIFICATION OF ARRESTED FERMENTATION ISSUES

Linda F. Bisson

Slow and incomplete or arrested yeast fermentations are a chronic problem for the wine industry worldwide. These fermentation problems arise due to the presence and impact of various stress factors in the yeast environment, some of which are unavoidable and others of which are the result of inappropriate fermentation management decisions. As the yeast adapt to these stress conditions, fermentation rates are adjusted to maintain cell viability. If conditions become so severe that continuation of metabolic activity will result in cell death, cells will arrest metabolism and cease consumption of sugar and enter a specific resting phase. There is a period during which this process of stress adaptation can be reversed or modified and the yeast encouraged to maintain or resume fermentation rates. The ability to effectively treat a slow or arrested fermentation depends upon both knowing the source of the stress and being able to correct the problem.
Published on 05/10/2005
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