Question

Which enzyme(s) is/are capable of breaking the bond between the two monomeric carbohydrate moieties found in the milk disaccharide galactose-β-1,4-glucose?

Answer 1

Lactase

The sugar present in milk is lactose. It is a disaccharide of galactose and glucose. The covalent bond present between galactose and glucose is glycosidic linkage. It is broken down or digested in the presence of enzyme lactase and water molecules.

This is also called as hydrolysis reaction because it in was the breaking down of a disaccharide into its monosaccharides in the presence of water.

Lactose is naturally present in milk and it is digested in our body with the help of lactase enzyme. People who are not having enough amount of this enzyme cannot digest lactose present in milk and these are called as lactose intolerant people.

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