Q. In the production of ethanol, pyruvic acid is first converted to acetaldehyde by the enzyme.
A) Alcohol Dehydrogenase
B) Alcohol oxidase
C) Pyruvate Dehydrogenase
D) Pyruvate decarboxylase
Explanation
In ethyl alcohol fermentation, (i) 2C$H_{3}$COCOOH $\underset{TPP,\ \ \ Mg^{2 +}}{\overset{pyruvate\ decarboxylase}{\rightarrow}}$ Pyruvic acid 2C$H_{3}$CHO+2C$O_{2}$ ($\uparrow$) Acetaldehyde (ii) 2C$H_{2}$CHO + 2NAD$H_{2}$ $\overset{Alcohol}{\rightarrow}$ Acetaldehyde 2C$H_{3}$C$H_{2}$OH + 2NA$D^{+}$ Ethyl alcohol
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.