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  4. In the production of ethanol, pyruvic acid is first converted to acetaldehyde by this enzyme

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Q. In the production of ethanol, pyruvic acid is first converted to acetaldehyde by this enzyme

J & K CETJ & K CET 2007Respiration in Plants

Solution:

In ethyl alcohol fermentation
(i) $2 CH _{3C} COCOOH \xrightarrow[TPP,MG^{2+}]{\text{Pyruvatede carboxylase}}$
$\underset{\text{Acetaldhyde}}{2 CH _{3} CHO} +2 CO_{2}(\uparrow)$
(ii) $2 CH _{3} CHO +2 NADH _{2} \xrightarrow[\text{Dehydrogenase}]{\text{Alcohol}}$
$\underset{\text{Ethylalcohol}}{2 CH _{3} CH _{2} OH} +2 NAD$