The difference between fresh milk and pure milk is that the sterilization temperature is different, the shelf life is different, and the nutritional loss is different.

1, the sterilization temperature is different. Fresh milk is also called pasteurized milk, using continuous mild heating pasteurization method, the sterilization temperature is lower, generally 63 to 85 degrees Celsius, can kill all the pathogenic bacteria, to ensure the safety of milk. Pure milk is processed by instantaneous autoclaving at a temperature of 135 to 150 degrees Celsius, which kills all microorganisms in the milk.

2, shelf life is different. Fresh milk can never be separated from 0 to 10 degrees Celsius refrigerated preservation environment, that is, to be kept in the refrigerator, the preservation period is shorter, only 2 to 7 days; Pure milk preservation period is longer, at room temperature up to 2 to 12 months.

3, nutritional loss is different. Fresh milk due to low sterilization temperature, can relatively intact to retain the nutrients of milk; and pure milk in the loss of nutrients is more.