FOOD TECHNOLOGY

Detailed explanation-1: -Lactobacillus Bacteria in Milk that changes Milk to Curd. When milk is heated to a temperature of 30-40 degrees centigrade and a small amount of old curd added to it, the lactobacillus in that curd sample gets activated and multiplies. These convert the lactose into lactic acid.

Detailed explanation-2: -Milk converts to curd due to the production of lactic acid. This process of conversion of milk to curd occurs due to the action of bacteria Lactobacillus that form lactic acids from sugars present in the milk. Lactobacillus is a genus of Gram-positive bacteria, anaerobes that are rod-shaped, and do not form spores.