Which enzyme converts glucose into alcohol ?

• Zymase

• Diastase

• Invertase

• Lipase

A.

Zymase

Glucose and fructose are both converted to ethanol and carbon dioxide in presence of zymase enzyme.

     C₆H₁₂O₆       $\stackrel{\mathrm{Zymase}}{\to }$        2C₂H₅OH + 2CO₂

Glucose/ Fructose                     Ethanol

Invertase enzyme converts sugar into glucose and fructose.

C₁₂H₂₂O₁₁ + H₂O _{$\stackrel{\mathrm{Invertase}}{\to }$} C₆H₁₂O₆ + C₆H₁₂O₆

     Sugar                            Glucose        Fructose

Gastric juice consists of weak gastric lipase which converts some fats into monoglycerides and fatty acids. Bile salts of the bile break down fat droplets into many small ones by reducing the surface tension offat droplets. This procress is called emulsification. This increases lipase action on fat. Lipase is present in the pancreatic juice and intestinal juice. Pancreatic lipase is the principal enzyme for the digestion of fat.

Fat $\stackrel{\mathrm{Bile}}{\to }$Emulsified fat

Emulsified $\stackrel{\mathrm{Pancreatic} \mathrm{lipase}}{\to }$Fatty acid  + Diglyceride

Diglyceride $\stackrel{\mathrm{Pancreatic} \mathrm{lipase}}{\to }$Fatty acid + Monoglyceride

Monoglyceride $\stackrel{\mathrm{Pancreatic} \mathrm{lipase}}{\to }$Fatty acid + Glycerol