The answer is – YES you CAN!
Until the mid 20th century, the cans that contained canned foods were made wholly of tin, which could leach into food after the can was opened. Modern cans, however, are made of a combination metal called tinplate steel or aluminum, which does not contaminate food, according to Britain’s Food Standards Agency.
By Emily Beach, eHow Contributor
The food in an unopened can has been specially processed or pasteurized to be stored in the can. It was designed to store safely without the need for refrigeration, though these cans may have a “best-before” or “use-by” date. With “best-before” dates, the product can be safely consumed even after the date, though the flavor and quality will be best before the posted date. If the can has a “use-by” date, the food may be perishable and should not be consumed after the given date.
As soon as a can has been opened, the contents are subject to bacteria and other contaminants. The food should be consumed immediately, or stored in a refrigerator to keep the temperature low and prevent contamination. According to the U.S. Department of Agriculture and North Dakota State University, it is safe to store any type of opened canned good in the refrigerator. The can should be covered with a lid foil, or plastic wrap to minimize the risk of contamination, but there is little to no risk of illness from keeping the food in the can. According to the USDA, all foods can be safely stored in an open can in the refrigerator for one to two days.