Question

What are yeast? Why are they used
to make wine and beer?​

Answer 1

Explanation:

Yeasts are the main fermentor and alcohol producer in the production of wine, beer and other alcohol drinks. The main yeast species used is Saccharomyces cerevisiae. It ferments the sugars, coming from different sources, e.g., grapes for wine, barley for beer to alcohol and carbon dioxide.

Answer 2

Answer:

Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are estimated to constitute 1% of all described fungal species.

The role of yeast in winemaking is the most important element that distinguishes wine from grape juice. In the absence of oxygen, yeast converts the sugars of wine grapes into alcohol and carbon dioxide through the process of fermentation.

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