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Why Does Canned Fruit Last So Long
- Jul 28, 2018 -

The reason why cans can be preserved for a long time without deterioration is completely due to the sealed container and strict sterilization, and has nothing to do with preservatives. The reason for making cans is very simple: firstly heat the raw materials to kill all the microorganisms; at the same time, heat the sterilization of the packaging cans; then put the sterile food into a sterile container, heat seal; finally heat sterilization After cooling, the volume of air inside the headspace of the container shrinks, and a negative pressure is generated. The bottle that was originally sealed can not be opened, and the bacteria outside cannot enter. After these procedures, the food will naturally not be corrupted, and no preservatives need to be added.