Vacuum – packing stores food in a vacuum environment, usually in an air-tight bag or bottle. The vacuum environment strips bacteria of oxygen needed for survival,
slowing spoiling. Vacuum-packing is
commonly used for storing nuts to reduce loss of flavor from oxidation. Process that the food is sealed in a pack after air has been
expelled.
The advantages and disadvantages are as fellow
Advantage
- Removing oxygen from the packaging is a main advantage to vacuum packing. Without oxygen the food will last much longer because the bacteria can't "do their thing."
- Buying a vacuum packaging machine can be expensive.
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