Question

Conversion of sugar into alcohol during fermentation is due to the direct action of

• A. Temperature
• B. Microorganism
• C. Zymase
• D. Concentration of sugar solution

Answer 1

The correct option is C Zymase

The overall process of fermentation is to convert glucose sugar (C${}_6$H${}_{12}$O${}_6$) to alcohol (CH${}_3$CH${}_2$OH) and carbon dioxide gas (CO${}_2$). The reactions within the yeast to make this happen are very complex but the overall process is as follows:

C${}_6$H${}_{12}$O${}_6$ ====> 2(CH${}_3$CH${}_2$OH) + 2(CO${}_2$)

Sugar ====> Alcohol + Carbon dioxide gas.

The most important type of fermentation is alcoholic fermentation, in which the action of zymase secreted by yeast converts simple sugars, such as glucose and fructose, into ethyl alcohol and carbon dioxide.