The main function of vacuum sealer is to remove oxygen to help prevent food spoilage. The principle is relatively simple, because food spoilage is mainly caused by microbial activity, and most microorganisms (such as mold and yeast) need oxygen to survive. And the vacuum sealer is the use of this principle, the bag and the food cells inside the oxygen extraction, so that microorganisms lose the living environment.
Experimental evidence that when the concentration of oxygen in the bag ≤ 1%, the growth and reproduction rate of microorganisms will drop sharply. Oxygen concentration <0.5%, most microorganisms will be inhibited and stop reproducing.
But the vacuum sealer machine is not a panacea. It can not inhibit the reproduction of anaerobic bacteria and enzymatic reaction caused by food deterioration and discoloration, so it also needs to be combined with other auxiliary methods, such as refrigeration, quick-freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt pickling, etc.
In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxidation is to prevent food oxidation, because oil and grease food contains a large number of unsaturated fatty acids, the role of oxygen and oxidation, so that food tastes bad, spoiled. In addition, the oxidation also makes vitamin A and C loss, food coloring in the role of unstable substances by the action of oxygen, so that the color darkened. Therefore, oxygen removal can effectively prevent food spoilage.
Vacuum inflatable packaging, in addition to the vacuum sealer has the function of oxygen preservation, there are mainly anti-pressure, gas barrier, freshness, etc., can be more effective in maintaining the original color, aroma, taste, shape and nutritional value of food for a long time.
Vacuum inflatable packaging in the vacuum and then filled with a single gas such as nitrogen, carbon dioxide, oxygen or a mixture of two or three gases. Its nitrogen is an inert gas, filling role, so that the bag to maintain positive pressure, to prevent the air outside the bag into the bag, the food to play a protective role. Its carbon dioxide can dissolve in all kinds of fat or water, leading to a weak acidic carbonic acid, has the activity of inhibiting microorganisms such as mold and spoilage bacteria. Its oxygen has the ability to inhibit the growth and reproduction of anaerobic bacteria, keep the freshness and color of fruits and vegetables, and high concentration of oxygen can make fresh meat keep its bright red color.
In addition, there are many foods are not suitable for vacuum sealer and must be used vacuum inflatable packaging. Such as brittle and fragile food, easy to lump food, easy to deform the oil food, with sharp edges or high hardness will pierce the bag of food, etc.. Food by vacuum inflatable packaging, the bag inflatable pressure is greater than the atmospheric pressure outside the bag, can effectively prevent food crushing deformation and does not affect the appearance of the bag and printing decoration.
Now there are more and more people use household food vacuum sealer. You can vacuum pack the food that needs to be kept fresh or not finished at home. We are a food vacuum sealer supplier, please feel free to contact us if you need them.
