摘要：Cheese whey is a rich source of lactose (4.7%) and lactose has a high rate (70%) among others components of cheese whey. Countries which have undeveloped dairy industry drain the cheese whey to the sewage and environment. In this way, there is a big lost in term of nutrient content and also it can cause environment pollution. If whey is used for lactose and lactose derives, these can provide a good source of nutrients and solve the problems of environment pollution. Lactitol , lactulose and hydrolyzed lactose can be produce from lactose and used as functional food additives in preparation of many food products.
