What are the characteristics of modified atmosphere storage?

First of all, understand what modified atmosphere storage is, also called modified atmosphere storage, which is an advanced fresh-keeping storage method for fruits and vegetables. On the basis of cold storage, increase the adjustment of gas composition, and control the temperature, humidity, carbon dioxide, oxygen concentration and ethylene concentration in the storage environment to inhibit the respiration of fruits and vegetables, delay their metabolic process, better maintain the freshness and commodity of fruits and vegetables, and extend the storage period and fresh-keeping period (sales shelf life) of fruits and vegetables.

Modified atmosphere storage has high technical requirements, which is quite different from ordinary fresh-keeping storage. Mainly reflected in the following aspects: first, the storage period of modified atmosphere storage can be extended by 0.5- 1 times compared with ordinary refrigeration; 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 by 2 1 ~ 28 days, which is 3~4 times that of ordinary cold storage. The equipment is different: nitrogen generator, air compressor, carbon dioxide generator, oxygen and ethylene remover are added to the controlled atmosphere warehouse. Three: different storage methods: modified atmosphere storage adopts the methods of storing blocks and removing blocks. That is, one warehousing and one shipment. The taboo of controlled atmosphere storage is to open it frequently, because the gas composition of controlled atmosphere storage is very different from that of outdoor air. Frequent import and export, the fresh-keeping effect is greatly reduced after the gas in the controlled atmosphere storage is exhausted. Four: the size difference of cold storage: the controlled atmosphere storage is generally relatively large, because the price of a set of controlled atmosphere storage equipment is 654.38+ 10,000. It is not cost-effective to make small fresh-keeping cold storage into controlled atmosphere storage, which is generally in the form of groups. Five: the air tightness requirements of cold storage are different: because the gas composition in the controlled atmosphere storage is quite different from the outside world, the air tightness requirements of the controlled atmosphere storage are high. Six: the price of cold storage is different: due to the cost of equipment, the cost of cold storage is high and the income is considerable.