What is the major reason behind the usage of lactase in the dairy industry?

Ans :Milk sugar or lactose is a disaccharide that is present in the naturally produced milk of mammals which can be digested properly by the intestines and requires lactase for the splitting of lactose into Galactose and glucose which can be easily digested. Some people who are lactose intolerant don’t have lactase in their body due to which lactase is being used in the dairy industry for the production of milk and other milk products