Class 8 Biology Microorganisms: Friend and Foe Role of microbes in production of Beverages

Role of microbes in production of Beverages

Yeasts play an important role in the production of various alcoholic drinks. Saccharomyces cerevisiae is popularly termed as Brewer’s yeast.


Saccharomyces cerevisiae ferment fruit juices & malted cereals. Molecules like glucose, fructose and sucrose are converted into C2H5OH and CO2 and release energy. Yeasts perform this conversion in absence of oxygen.

C6H12O6      -->     2C2H5OH  +  2CO2 

This reaction takes place in presence of enzyme Zymase.  Alcohol (Ethanol) is produced as a result if this reaction. CO2 released is used as raising agent in making bread.


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