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Why is air sucked out of cans containing canned food?

Updated: 4/28/2022
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Kerwin2000

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10y ago

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When food is packaged in cans, air is sucked out of the can to help prevent the food inside from spoiling. Some manufacturers add preservatives to food to help keep it fresh longer.

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Q: Why is air sucked out of cans containing canned food?
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