Canned food can maintain 1+ year in good state. However, when you open the can, the countdown starts.
I read it happens because microorganism from the outside reach the inside of the can.
My question is: Is it possible to keep food inside the just opened can free of microorganisms? Maybe moving immediately to an airtight container and take out the needed amount with a cleaned spoon? (If a cleaned spoon still contains microorganism --- why clean it in the first place?)