Microbes and wine: locut. Yeast is a microscopic, one-celled plant microbe *. Without yeasts, there is no wine just must. So without germs, no wine is possible.
Yeasts play a major role in the winemaking process. They convert the sugar in the must obtained by pressing the grapes into alcohol. Yeasts also produce minor constituents which alter the aroma and bouquet of the wine. They are found in nature, soil and on plants ....
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