How long can a vacuum bag be stored?

1. The main role is deoxygenation.

In fact, the preservation principle of vacuum packaging machine is not complex, one of the most important links is to remove oxygen from packaging products. Just the packaging and food oxygen extracted, and then sealed packaging, to avoid air entry, there will be no oxidation reflected, so as to achieve a preservation effect. The use and use of vacuum packaging machine is conducive to prevent food deterioration, the principle of performance, because food mold decay is mainly caused by the activities of microorganisms, and most microorganisms need oxygen for survival, and vacuum packaging is the use of this principle, the packaging and food cells in the oxygen extraction, so that microorganisms lose the living environment. Vacuum packaging can not inhibit the reproduction of anaerobic bacteria and enzyme reaction caused by food deterioration and discoloration, so it also needs to be combined with other auxiliary methods, such as refrigeration, rapid freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salting and so on.

2. To prevent food oxidation.

Because the fatty food contains a lot of unsaturated fatty acids, the action of oxygen and oxidation, so that the food taste, deterioration. In addition, oxidation also causes vitamin A and vitamin C loss, food coloring instability of the substance by oxygen, so that the color darkens. Therefore, deoxygenation can effectively prevent food spoilage, maintain its color, aroma, taste and nutritional value.

3. Inflatable link.

The main role of vacuum inflatable packaging in addition to vacuum packaging with oxygen quality function, mainly anti-pressure, gas resistance, preservation and other effects, can more effectively make food long-term to maintain the original color, aroma, taste, shape and nutritional value. In addition, many foods should not be vacuum-packed, but must be vacuum-inflated. Such as brittle fragile food, easy to block food, easy to deform oily food, sharp angle or high hardness will puncture the bag of food. Food by the food vacuum packaging machine vacuum inflatable packaging, the inflatable pressure in the bag is stronger than the atmosphere outside the bag, can effectively prevent food crushing deformation, and does not affect the appearance of the bag and printing decoration.

Vacuum inflatable packaging is then filled with nitrogen, carbon dioxide, oxygen single gas or a mixture of 2-3 gases. Nitrogen is an inert gas, which acts as a filling, keeping positive pressure in the bag to prevent air outside the bag from entering the bag, which plays a protective role in food. Carbon gas can be dissolved in all kinds of fats or water, forming a weak acidic carbonic acid, has inhibited mold, corruption bacteria and other microorganisms activity. Oxygen inhibits the growth and reproduction of anaerobic bacteria, keeps fruits and vegetables fresh and colored, and high concentrations of oxygen keep fresh meat bright red.