The preservation cold storage can save a variety of People's Daily food, in order to improve people's living standards and meet people's increasing material needs for life as the main purpose. In cold storage, there is mainly low temperature, low temperature can inhibit the growth of microorganisms.

However, if it is not disinfected for a long time, it can lead to the deterioration of the stored food and cause losses. In the past, not aspiring to eliminate mold, such as formaldehyde fumigation and fumigated peracetic acid. This method is cumbersome and simple resulting in contamination of walls, utensils, equipment and food. Ozone has been widely used in cold storage, sterilization and other fields, with outstanding sterilization, no secondary pollution and easy to use and other advantages. Can say freeze disinfection, ozone priority.

The application of ozone in cold storage has three main aspects: (1) killing microorganisms and inhibiting bacterial growth - sterilization and sterilization; (2) Oxidation and deodorization of various odor inorganic or organic compounds; (3) Oxidative metabolites, decompose the ethylene released by fruits and vegetables, and then inhibit the innovation of the old, greatly delaying the maturation process of fruits and vegetables, and reach the intention of extending the freshness period.