Introduction to freeze-drying process of milk

                                                                      Introduction to freeze-drying process of milk

The freeze-drying process of milk mainly includes the following steps: First, pre-treatment of milk, standardization, sterilization, filtration, degreasing, homogenization, concentration and other treatments are carried out on the raw milk to ensure the purity and stability of milk; second, freezing treatment, freezing the treated milk into solid through quick freezing storage, and then vacuum drying treatment, the frozen milk solid is placed in a vacuum environment, so that the solid ice is directly sublimated into gas and removed, and then the milk freeze-dried powder is obtained by low-temperature crushing.

2. Advantages of freeze-drying technology of milk

Freeze-drying technology of milk has the following advantages:

(1) Good preservation performance: 95~99% of the water in freeze-dried milk powder is removed, so that it can be stored for a long time at room temperature without deterioration.

(2) Easy to store, transport and use: freeze-dried milk powder can be packaged and sealed, which is convenient for storage, transportation and use, and only needs to add an appropriate amount of water when using it.

(3) Maintaining the original nutritional value and taste of milk: In the freeze-drying process of milk, the original nutrients, color and taste of milk are retained.