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Food Safety shelf artifact - Canned
Aug 18, 2016

The canned food a hundred years ago, "Guards" canned preservation technology can get so trust is its production principle and related technological innovations. Canned been able to long-term storage without deterioration, fully benefited from a sealed container and strict sterilization, nothing to do with a preservative. Canned is not mysterious, canning principle is very simple: first the raw material is heated sufficiently to kill all microorganisms; while the cans full heat sterilization; and then loaded into a sterile aseptic food containers, hot sealing; and finally sterilized by heating, cooling, air inside the container headspace volume shrinkage will produce negative pressure, the original seal of the bottle is more open, and outside of the bacteria can not go. After these steps, the natural foods will not spoil, you do not need to add any preservatives.