Lactase is considered as B- galactosidase enzymes that breaks down and form galactosidic bonds on sugars. This is present in the digestive system and hydrolyze the lactose present in the food into glucose and galactose. Lactase is present in wide number of animals and microorganism. Bacillus, Kluyveromyces and Aspergillus are commercially cultivated to produce lactase for industrial purposes.
