Canned food has been a staple in the American diet for centuries, but have you ever wondered why it never seems to go bad? Canned food is actually one of the most long-lasting and shelf-stable food items available on the market today.
Thanks to a process called thermal processing, canned foods can last for years without spoiling or going bad.
Thermal processing is the process of heating food to a certain temperature for an extended period of time in order to kill any bacteria that may be present. This ensures that the canned food is safe for consumption, and also prevents the growth of any new bacteria or microorganisms. The process also helps reduce spoilage due to enzymatic reactions that occur when food is left out at room temperature.
The cans themselves are also designed with shelf-stability in mind. The metal used in canning is made from steel or aluminum which is resistant to corrosion and rusting. The seams of the can are designed with tight seals which prevent any air or liquid from entering or escaping, thus keeping oxygen out and preventing bacteria growth.
The combination of thermal processing and airtight cans help ensure that canned foods remain safe and fresh for extended periods of time without going bad. In some cases, canned foods can last up to five years without spoiling or becoming unsafe to eat. However, it’s important to remember that canned food should be stored properly at room temperature away from direct sunlight and heat sources in order to ensure its longevity.
Conclusion:
Canned food does not go bad due to thermal processing and airtight cans which keep oxygen out and prevent bacteria growth. This combination helps keep canned foods safe and fresh for years, although proper storage should still be taken into consideration in order to ensure its shelf-stability.