NEET BIOLOGY

Detailed explanation-1: -Alcoholic dehydrogenase and Pyruvate decarboxylase, both these enzymes convert pyruvic acid into carbon dioxide and ethanol in the process of alcoholic fermentation.

Detailed explanation-2: -Upon a biochemical point of view, fermentation is carried out by yeasts (and some bacteria) when pyruvate generated from glucose metabolism is broken into ethanol and carbon dioxide (Figure 1).

Detailed explanation-3: -Alcoholic fermentation is a complex biochemical process during which yeasts convert sugars to ethanol, carbon dioxide, and other metabolic byproducts that contribute to the chemical composition and sensorial properties of the fermented foodstuffs.

Detailed explanation-4: -Yeasts can directly ferment simple sugars into ethanol while other type of feedstocks must be converted to fermentable sugars before it can be fermented to ethanol. The common processes involves in ethanol production are pretreatment, hydrolysis and fermentation.

Detailed explanation-5: -Fermentation: Single-celled microorganisms called yeast are added to the slurry. Fermentation is the biochemical process that occurs when yeast break down glucose. Yeast gets energy from glucose. As a result, ethanol is produced.