What's the difference between a cold storage and a controlled atmosphere storage?

In use, the difference between air-conditioned storage and cold storage is as follows:

1, the controlled atmosphere storage time is longer, generally 0.5- 1 times longer than ordinary cold storage;

2. Compared with cold storage, the freshness and crispness of fruits and vegetables stored in modified atmosphere are better;

3. The shelf life of fruits and vegetables after controlled atmosphere storage can be extended by 265,438+0-28 days, and it can be extended by 3-7 days in ordinary cold storage;

4. Modified atmosphere storage is a low oxygen environment, which can inhibit the growth of mold, pests and diseases and preserve the integrity of fruits and vegetables to the maximum extent.

Metal-faced polyurethane sandwich composite board manufactured by high-pressure continuous foaming machine must be used as thermal insulation material for the wall and roof of modified atmosphere warehouse to ensure the sealing requirements of the warehouse under high pressure difference.

Advantages of controlled atmosphere storage:

On the basis of cold storage, modified atmosphere storage increases the adjustment of gas composition. By controlling the temperature, humidity, carbon dioxide, oxygen concentration and ethylene concentration in the storage environment, the respiration of fruits and vegetables is inhibited, the metabolic process is delayed, the freshness and commodity of fruits and vegetables are better maintained, and the storage period and fresh-keeping period (sales shelf life) of fruits and vegetables are prolonged.

Compared with ordinary cold storage, general controlled atmosphere storage can prolong the storage period by 0.5- 1 times; The fruits and vegetables stored in the controlled atmosphere warehouse first "wake up" from the "dormant" state after leaving the warehouse, which can prolong the shelf life (sales shelf life) of fruits and vegetables after leaving the warehouse by 2 1 ~ 28 days, which is 4-5 times that of ordinary cold storage.

The above contents refer to 3 Baidu Encyclopedia-Cold Storage, Baidu Encyclopedia-Modified Atmosphere Storage.