Desktop Vacuum Sealing Machine

Desktop Vacuum Sealing Machine

1. The main function of vacuum packaging is to remove oxygen to help prevent food deterioration. The principle is relatively simple, because food spoilage is mainly caused by the activities of microorganisms, and the survival of most microorganisms (such as molds and yeasts) is It requires oxygen, and vacuum packaging uses this principle to remove oxygen from 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 ≤1%, the growth and reproduction speed of microorganisms decreases sharply. When the oxygen concentration is ≤0.5%, most microorganisms will be inhibited and stop breeding. (Note: Vacuum packaging cannot inhibit the reproduction of anaerobic bacteria and food deterioration and discoloration caused by enzymatic reactions, so it needs to be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, radiation sterilization, microwave sterilization, salt Pickled, etc.)

2. In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxygenation is to prevent food oxidation. Grease foods contain a large amount of unsaturated fatty acids, which are oxidized by the action of oxygen, causing the food to taste and deteriorate. In addition, oxidation It also causes the loss of vitamins A and C, and the unstable substances in food pigments are affected by oxygen, making the color darker. Therefore, oxygen removal can effectively prevent food from deteriorating.