Double chamber vacuum packaging machine price? Which is a double chamber vacuum packaging machine? Shandong double chamber vacuum packaging machine which is better?
How about the preservation effect of the double chamber vacuum packaging machine? Double chamber vacuum packaging machine preservation principle.
The following Zhucheng Jiali Xiaobian will introduce to you: the principle of double-chamber vacuum packaging machine preservation
The main function of vacuum packaging is to remove oxygen, which is beneficial to prevent food deterioration, and the principle is relatively simple.
Because the deterioration of food mold is mainly caused by the activity of microorganisms, and the survival of most microorganisms requires oxygen.
Vacuum packaging uses this principle to remove oxygen from the inside of the package and food cells, causing the microbes to lose their "survival environment."
Vacuum packaging can not inhibit the deterioration and discoloration of food caused by anaerobic bacteria and enzyme reaction, so it needs to be combined with other auxiliary methods.
Such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salting and so on.
In addition to inhibiting the growth and reproduction of microorganisms, vacuum deoxygenation is another important function to prevent food oxidation.
Since fats and oils contain a large amount of unsaturated fatty acids, they are oxidized by the action of oxygen, which causes the food to taste and deteriorate.
In addition, oxidation also causes loss of vitamin A and vitamin C, and unstable substances in the food coloring matter are subjected to oxygen to darken the color.
Therefore, oxygen scavenging can effectively prevent food from spoiling and maintain its color, aroma, taste and nutritional value. The same effect can be achieved by a small vacuum packaging machine as long as it can achieve a certain degree of vacuum.
In addition to oxygen removal, vacuum packaging also has an inflating link. The main function of vacuum inflated packaging is in addition to the deoxidizing and quality assurance function of vacuum packaging.
There are mainly anti-pressure, gas-blocking and fresh-keeping functions, which can more effectively maintain the original color, aroma, taste, shape and nutritional value of the food for a long time.
In addition, there are many foods that are not suitable for vacuum packaging, but must be vacuum-filled. Such as crunchy and fragile foods, easy to cake foods, easily deformed oily foods,
Foods with sharp edges or high hardness will pierce the bag. After the food is vacuum-packed by the food vacuum packaging machine,
The inflation pressure inside the packaging bag is stronger than the atmospheric pressure outside the packaging bag, which can effectively prevent the food from being crushed and deformed without affecting the appearance and printing decoration of the packaging bag.
The vacuum aerated package is filled with a mixture of nitrogen, carbon dioxide, oxygen, or a mixture of two or three gases under vacuum.
Nitrogen is an inert gas that acts as a filling to maintain a positive pressure inside the bag to prevent air outside the bag from entering the bag and to protect the food.
Carbon oxide gas can be dissolved in various types of fat or water to form weakly acidic carbonic acid, and has the activity of inhibiting microorganisms such as mold and spoilage bacteria.
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 preservation principle of the double chamber vacuum packaging machine, how to choose a good vacuum packaging machine, what is the use of the double chamber vacuum packaging machine?
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