vacuum seal machine

The main function of vacuum packaging is to remove oxygen, which is beneficial for preventing food spoilage. Its principle is relatively simple, as food spoilage is mainly caused by the activity of microorganisms, and the survival of most microorganisms (such as mold and yeast) requires oxygen. Vacuum packaging uses this principle to pump out the oxygen inside the packaging bag and food cells, causing microorganisms to lose their living environment. Experimental results have shown that when the oxygen concentration inside the packaging bag is ≤ 1%, the growth and reproduction rate of microorganisms sharply decreases. When the oxygen concentration is ≤ 0.5%, most microorganisms will be inhibited and stop reproducing. (Note: Vacuum packaging cannot inhibit the growth of anaerobic bacteria and the spoilage and discoloration of food caused by enzyme reactions. Therefore, it needs to be combined with other auxiliary methods such as refrigeration, quick freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt pickling, etc.)