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Is vacuum packaged food safe

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unsafe
vacuum packaging may provide a good living environment for some anaerobic bacteria. Once anaerobic bacteria breed in vacuum packaged food, it may cause food poisoning. For example, there is a kind of bacteria called Listeria. Under the anaerobic environment of vacuum packaging, this kind of bacteria will be more than 100 times higher than that in the air. Moreover, many of these bacteria can reproduce at low temperatures, resulting in food spoilage in the refrigerator
generally, meat packaged in vacuum, such as pork, has a shelf life of 20 days at room temperature. It can be stored in a refrigerator at 4 ℃ for 2 weeks and in a freezer at – 18 ℃ for one or two months. Therefore, even if the food stored during the Chinese New Year is vacuum packed, it should be eaten as soon as possible to avoid food corruption
in fact, if you want to eat healthy and safe food, you should choose large and guaranteed suppliers.

it still depends on the manufacturer. If the manufacturer is qualified, the product is qualified.

vacuum packaging only draws out the air in it, which can inhibit the growth and reproduction of some aerobic microorganisms, but it can not inhibit anaerobic microorganisms, and may even accelerate their growth and reproduction. Therefore, vacuum alone can not ensure the safety of food microorganisms
in addition, if the production process is not strictly controlled, risks such as excessive food additives and mixing of physical impurities cannot be guaranteed

therefore, vacuum packaged food is not necessarily safe.

I think we have to find a professional city or an enterprise in charge of vacuum packaging machine

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