Why Canned Food Lasts So Long
Canned food is designed to last. During the canning process, food is heated to a temperature that kills bacteria, sealed in an airtight container, and protected from light and oxygen—two major causes of spoilage.
This combination creates an environment where harmful microorganisms struggle to survive. As long as the can remains sealed and undamaged, the contents are protected from contamination.
That’s why canned food has played such a critical role in emergency preparedness, military rations, and humanitarian aid for decades.
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