Modified atmosphere anti mildew packaging technology

　　Air conditioning is one of the forms of ecological mold prevention. The respiratory metabolism of decaying microorganisms and biological commodities can not be separated from three factors: air, water and temperature. As long as any of these factors can be effectively controlled, the purpose of preventing commodities from mildewing can be achieved. For example, as long as the oxygen concentration in the air is controlled and adjusted, and the hypoxia environment is artificially created, the growth and reproduction of mold microorganisms will be inhibited. Under the condition of sealed packaging, by changing the composition of the air in the packaging to reduce the oxygen concentration and create a low oxygen environment, it can inhibit the life activities of moldy microorganisms, so as to achieve the purpose of moldy and rotten packaged food. This is the mechanism of modified atmosphere moldy packaging.

　　Modified atmosphere anti mildew packaging is a component that is non-toxic to human body and has inhibitory effect on mildew microorganisms. At present, it is mainly filled with carbon dioxide and nitrogen. The normal content of carbon dioxide in the air is 0 0.3%, trace carbon dioxide can stimulate the growth of microorganisms; When the spatial concentration reaches 10% - 14%, it can inhibit microorganisms; If the space concentration exceeds 40%, it will have obvious inhibition and killing effect on microorganisms. The packaging materials used must be air tight materials with certain insulation performance to gas or water vapor to maintain the gas concentration in the package.

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