Paper bags, milk and plastic bags. What's the difference between milk and paper bags?
The sterilization methods are different......Plastic bags of milk, that is, the use of bus sterilization, is the most do not destroy the milk in the nutrition of the way ~ is also very cheap, in general, buy that kind of milk to drink for a long time ~!The bag is Tetra Pak pillow packaging milk...... with the ultra high temperature sterilization, the sterilization ratio of bus destroys nutrients ~ and will make the lactose coking, to taste, to which + essence, in order to extend shelf life, go inside ~ + preservativeSo, I suggest that we buy plastic packaging milk, cheap and good ~!
Paper packaging bags - paper bags are sealed and filled with milk, which is poured into the paper tube and then cut and sealed, so there is no air in it. The paper bag is composed of paper, aluminum, plastic six layer composite packaging, can effectively put the milk and air, light and bacteria isolation, so it can be stored at room temperature, and longer shelf life, can reach 45 days, paper bags of the higher price, the cost is low.
Plastic bags - aseptic plastic bags are specially treated with a black coating inside the plastic bag, which serves as a barrier to light. However, due to the relatively thin plastic bags, even after special treatment, the effect of isolation of light can not be compared with aluminum foil, so the normal temperature guarantee period of milk is about 30 days.
