How does lactase work?
Lactase is a digestive enzyme that is produced by the small intestine. The prime function of lactase is to digest a sugar compound called lactose. Yap, lactase is an enzyme that breaks down the disaccharide lactose yielding an end-product of glucose and galactose. It is important in digestion because the action of lactase yields glucose which is the primary sugar in the blood.
Yes. The only "Lact-" ingredient that is derived from milk is lactose. Um.. No. That answer is just blatantly wrong. Lactose (milk sugar) MUST be added to the bacterial fermentation broth for the microorganisms to produce lactase (the enzyme that breaks down lactose molecules). Lactase is made using milk. So NO, lactase is NOT vegan.
Biotechnology firms isolate lactase and add the enzyme to milk to reduce the level of lactose in the drink. The lactase enzymes are attached to the surface of large molecules and brought into contact with milk. The lactose present will be digested into glucose and galactose by lactase. The milk produced is sweeter and it can be consumed by lactose intolerant adults without causing any problems.