In a country like India, where lactose intolerance is quite prevalent, large population can only consume lactose-hydrolyzed milk. The enzyme lactase is present in milk which hydrolyses lactose sugar to glucose and galactose. But few people lack this enzyme and cannot breakdown lactose, which is then fed by bacteria and it causes digestive problems. Lactose-free milk
can be produced by immobilization techniques. Normal milk is eluted through immobilized lactase-containing column, and the milk obtained contains the products, i.e., glucose and galactose, which can easily be digested by lactose-intolerant people