Popular fresh fruit and vegetable preservation technology

With the frequent transportation of fruits and vegetables and people's increasing freshness of goods, various new technologies for extending the shelf life of fruits and vegetables have emerged. The following three are more popular among users.
Researchers often allow only the required (or undesired) gas molecules to pass through and establish a suitable atmosphere for atmosphere adjustment according to the package contents. According to this principle, a company in the United States has invented a new type of packaging box with air conditioning performance that is specially used for transporting fruits and vegetables. The nitrogen content in the box exceeds 98%. The main function is a special layer of film that allows only nitrogen to pass through and absorbs all oxygen molecules. The respiration of fruits and vegetables is therefore slowed down and kept fresh for long periods of time.
Another company in the United States has invented a plastic bag that extends the freshness of fruits and vegetables by more than twice. The raw materials for the production of Bags are natural activated clay and polyethylene. The material is conducive to the gas and moisture generated during the ripening process of fruits and vegetables can be sent out through the bag to prevent the fungus in the bag, to achieve the purpose of preservation.
A Japanese paper company has also created a fresh-keeping fruit box that keeps fruit fresh for up to 1 month by inhibiting fruit respiration and preventing evaporation of water. On the corrugated liner of the corrugated carton, add a layer of polyethylene film, and then apply a waterproof wax coating containing traces of fruit disinfectant.