Traditional Culture Encyclopedia - Traditional virtues - The following methods are commonly used in food packaging: ① vacuum packaging salted ham, the purpose of which is: _ _ _ _ _ _ _; (2) The potato chips are packed in inflatable packages, and the gas in
The following methods are commonly used in food packaging: ① vacuum packaging salted ham, the purpose of which is: _ _ _ _ _ _ _; (2) The potato chips are packed in inflatable packages, and the gas in
The following methods are commonly used in food packaging: ① vacuum packaging salted ham, the purpose of which is: _ _ _ _ _ _ _; (2) The potato chips are packed in inflatable packages, and the gas in them
(1) Vacuum packaging can remove oxygen and make food slowly oxidized and deteriorated;
(2) The gas suitable for filling food packaging bags should be chemically inactive and non-toxic, which can be nitrogen or carbon dioxide.
(3) Calcium lime has water absorption and is often used as a food desiccant.
(4) Iron powder can absorb oxygen and moisture in food packaging bags.
So the answer is: (1) isolate oxygen to prevent food from oxidative deterioration;
(2) Nitrogen or carbon dioxide, etc. ;
(3) drying;
(4) Water and oxygen.
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