The principle of use of food vacuum packaging bags

The main function of food vacuum packaging bags is to remove oxygen to help prevent food spoilage. The principle is relatively simple, because food mildew and spoilage is mainly caused by the activities of microorganisms, and the survival of most microorganisms (such as mold and yeast) is Oxygen is needed, and the vacuum packaging bag uses this principle to extract the oxygen in the packaging bag and food cells, so that the microorganisms lose the environment for survival. Composite packaging bags, aluminum foil bags, and plastic packaging bags. Experiments have shown that when the oxygen concentration in the food 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 stopped. Breed. In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxygenation is to prevent food oxidation. Because oily foods contain a large amount of unsaturated fatty acids, they are oxidized by the action of oxygen, which makes the food taste and deteriorate. Loss of vitamins A and C, and unstable substances in food coloring are affected by oxygen, darkening the color. Therefore, deoxygenation can effectively prevent food spoilage. [Foil bag]