What is the main function of vacuum packaging?

The main function of the vacuum packaging machine is to remove oxygen to help prevent food spoilage. The principle is also relatively simple, because the mildew and spoilage of food is mainly caused by the activities of microorganisms, and the survival of most microorganisms (such as mold and yeast) is necessary. Oxygen, and vacuum packaging uses this principle to pump out the oxygen in the packaging bag and food cells, so that microorganisms lose the environment for survival. Experiments have shown that when the oxygen concentration in the packaging bag is less than or equal to 1%, the growth and reproduction rate of microorganisms will drop sharply. When the oxygen concentration is less than or equal to 0.5%, most microorganisms will be inhibited and stop multiplying. (Note: vacuum packaging cannot inhibit the reproduction of anaerobic bacteria and the deterioration and discoloration of food caused by enzymatic reactions, so it needs to be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt pickled etc.)

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