Vacuum food packing bag principle and function

18-10-2019

    In order to keep fresh, foods are often packaged in vacuum food bags. So do you know the principles and functions of vacuum food packing bags? The following small series will tell you about the principle and function of vacuum food packing bags, and I hope to help everyone.


  Vacuum food packing bag principle


  The main function of the vacuum food packing bags is to remove oxygen, which is beneficial to prevent food spoilage. The principle is also relatively simple, because the deterioration of food mold is mainly caused by the activity of microorganisms, and the survival of most microorganisms requires oxygen, and vacuum packing bag It is the use of this principle to remove the oxygen in the packing bag and food cells, so that the micro-objects lose the "environment of survival."


  Vacuum food packing bags function


  Vacuum food packing bags can not inhibit the deterioration and discoloration of food caused by anaerobic bacteria reproduction and enzyme reaction, so it is also necessary to combine with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salting System. Vacuum deoxidation In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum food packing bags 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 foods taste, deteriorate and oxidize. It also causes loss of vitamins A and C. The unstable substances in food pigments are affected by oxygen, which makes the color darker. Oxygen removal can effectively prevent food from deteriorating and maintain its color, aroma, taste and nutritional value.

        

Vacuum food packing bag


  The vacuum food packing bags has the function of deoxidizing and protecting the quality. After the food is packaged in the vacuum food packing bags, the inflation pressure in the packing bags is stronger than the atmospheric pressure outside the packing bags, which can effectively prevent the food from being crushed and deformed without affecting the appearance and printing decoration of the packing bags.


  The vacuum food packing bags is filled with nitrogen, carbon dioxide, oxygen single gas or a mixture of two or three gases under vacuum. The nitrogen gas is an inert gas, which acts as a filling to maintain a positive pressure inside the bag to prevent the air outside the bag from entering the bag, thereby protecting the food. Its carbon dioxide can be dissolved in fat or water, which leads to weakly acidic carbonic acid, and has the activity of inhibiting microorganisms such as mold and spoilage bacteria. Its oxygen inhibits the growth and reproduction of anaerobic bacteria, keeps the freshness and color of fruits and vegetables, and high-concentration oxygen keeps fresh meats bright red.


  The above is about the principle and function of the vacuum food packing bags. I hope everyone can understand the principle and function of the vacuum food packing bags and it will help everyone.


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