Question

Identify the correct sequence of products during wine preparation

• A. Glucose \(\rightarrow\) pyruvic acid \(\rightarrow\) acetaldehyde \(\rightarrow\) ethyl alcohol
• B. Glucose \(\rightarrow\) acetaldehyde \(\rightarrow\) pyruvic acid \(\rightarrow\) ethyl alcohol
• C. Glucose \(\rightarrow\) acetaldehyde \(\rightarrow\) ethyl alcohol
• D. Glucose \(\rightarrow\) pyruvic acid \(\rightarrow\) ethyl alcohol

Hint:

Fermentation by yeast converts sugar into alcohol and carbon dioxide, which is essential in wine and beer production.

Answer 1

The Correct Option is A

During wine fermentation, glucose is first converted into pyruvic acid by glycolysis, then pyruvic acid is decarboxylated to form acetaldehyde. Finally, acetaldehyde is reduced to ethanol (ethyl alcohol) by yeast.