It is a common misconception that unopened canned food can be put in the refrigerator. While this may seem like a good way to store the food and keep it fresh, it is actually not recommended. Canned food, when unopened, should not be stored in the refrigerator for several reasons.
Temperature Fluctuations: Refrigerators fluctuate in temperature as they are opened and closed throughout the day. Canned food is sensitive to temperature changes and can be damaged by fluctuating temperatures. Additionally, if the canned food is exposed to temperatures below 40 degrees Fahrenheit for an extended period of time, it can become unsafe to eat.
Can Compromise Quality: If canned food is placed in the refrigerator, the cold temperatures can actually cause some of the quality of product to degrade over time. This includes texture changes, flavor changes, and nutrition value or shelf life decreases.
Cans May Rust: Although cans are made out of steel which makes them strong and durable, they still have a risk of rusting when exposed to moisture in a refrigerator. This is especially true if there are any dents or scratches on the outside of the can. If a can has any rust on it, it should never be consumed as this indicates that air or bacteria have been able to enter into the container.
Conclusion: Ultimately, it is not recommended to put unopened canned food in the refrigerator as there are several risks associated with doing so. It is best to keep cans stored at room temperature until ready for use.