What does nitrogen do?

Nitrogen is also commonly used as a protective gas in cereals, canned foods, fruits and other foods. Using nitrogen to make grain dormant and anoxic, the metabolism is slow, which can achieve good insect-proof, mildew-proof and deterioration-proof effects, and the grain is not polluted and the management is relatively simple.

The cost is not high, so it has developed rapidly in recent years. At present, Japan, Italy and other countries have entered the pilot stage of small-scale production.

In recent years, nitrogen is also used to preserve grain in many areas of our country, which is called "vacuum nitrogen storage" and can also be used to preserve agricultural and sideline products such as fruits.