Final product of fermentation

Explanation

The slow conversion of complex organic substances into simpler substances in the presence of enzymes is called fermentation. Grape juice and other fruit juices are used in fermentation in the presence of yeast (which contains suitable enzymes) to produce alcoholic beverages. (401) ## Page 50 In this process, molasses or sugar obtained from sugarcane and fruits, or starch obtained from various grains, is first converted into glucose and fructose in the presence of the enzyme invertase. Both have the formula C₆H₁₂O₆. $$ C_{12}H_{22}O_{11} + H_2O \xrightarrow{invertase} C_6H_{12}O_6 + C_6H_{12}O_6 $$ Sugar Glucose Fructose Both glucose and fructose, in the presence of another enzyme, zymase, are converted into ethyl alcohol (ethanol) and carbon dioxide. Both enzymes—invertase and zymase—are present in yeast.