Modified atmosphere

（重定向自Modified Atmosphere Packaging）

Testing the atmosphere in a plastic bag of carrots

Modified atmosphere is the practice of modifying the composition of the internal atmosphere of a package (commonly food packages, drugs, etc.) in order to improve the shelf life.

The modification process often tries to lower the amount of oxygen (O₂), moving it from 20.9% to 0%, in order to slow down the growth of aerobic organisms and the speed of oxidation reactions. The removed oxygen can be replaced with nitrogen (N₂), commonly acknowledged as an inert gas, or carbon dioxide (CO₂), which can lower the pH or inhibit the growth of bacteria. Carbon monoxide can be used for preserving the red color of meat.

单词	Modified Atmosphere Packaging
释义	Modified Atmosphere Packaging 英语百科 Modified atmosphere （重定向自Modified Atmosphere Packaging） Modified atmosphere is the practice of modifying the composition of the internal atmosphere of a package (commonly food packages, drugs, etc.) in order to improve the shelf life. The modification process often tries to lower the amount of oxygen (O₂), moving it from 20.9% to 0%, in order to slow down the growth of aerobic organisms and the speed of oxidation reactions. The removed oxygen can be replaced with nitrogen (N₂), commonly acknowledged as an inert gas, or carbon dioxide (CO₂), which can lower the pH or inhibit the growth of bacteria. Carbon monoxide can be used for preserving the red color of meat.
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