Installation of Modified Atmosphere Storage for Fruits and Vegetables

Modified atmosphere storage, also known as controlled atmosphere storage, is an advanced method for preserving fruits and vegetables today. It is based on refrigeration and increases gas composition regulation. By controlling the temperature, humidity, carbon dioxide, oxygen concentration, and ethylene concentration in the storage environment, it inhibits the respiration of fruits and vegetables, delays their metabolic process, better maintains the freshness and marketability of fruits and vegetables, extends their storage period and sales shelf life

Modified atmosphere storage, also known as controlled atmosphere storage

It is an advanced method for preserving and storing fruits and vegetables today

It is based on refrigeration and increases gas composition regulation. By controlling the temperature, humidity, carbon dioxide, oxygen concentration, and ethylene concentration in the storage environment, it inhibits the respiration of fruits and vegetables, delays their metabolic process, better maintains the freshness and commercial quality of fruits and vegetables, and extends their storage and sales shelf life. Normally, controlled atmosphere storage can extend the storage period by 2-3 times compared to regular refrigeration.

Traditional methods for storing and preserving fruits and vegetables include simple storage, ventilated storage, radiation preservation, chemical preservation, and cold storage. Simple storage and ventilated storage facilities have simple equipment and low investment, but the storage effect is poor, the storage period is short, and there is serious decay and loss. Radiation and chemical preservation have certain applicability on some fruits, but there is radiation and chemical residue pollution, and not all fruits and vegetables can be applied.

Modified atmosphere storage can create a storage environment for fruits and vegetables to a large extent by changing the gas composition and relative humidity of the storage environment under suitable low temperature conditions. Its effects are manifested in the following aspects: the low oxygen (generally O2 content of 1% -5%) and appropriate CO2 concentration created by modified atmosphere storage can effectively inhibit respiration, reduce the loss of nutrients in fruits and vegetables, and inhibit the growth and reproduction of pathogenic bacteria, controlling the occurrence of certain physiological diseases; Remove ethylene from the storage environment gas to inhibit its ripening effect on fruits and vegetables, delay post ripening and aging processes; Increase the relative humidity in the ambient gas to reduce the transpiration of fruits and vegetables, thereby achieving the goal of long-term storage and preservation of fruits and vegetables.

Therefore, fruits and vegetables stored under controlled atmosphere have the following characteristics:

(1) Effectively maintain the original shape, color, and aroma of fruits and vegetables;

(2) The hardness of the fruit is higher than that of ordinary refrigeration;

(3) Extended storage time;

(4) Low fruit decay rate and low natural loss (water loss rate);

(5) Extend shelf life; Due to the long-term effects of low O2 and high CO2 on fruits and vegetables, there is still a long period of "lag effect" or dormancy when the controlled atmosphere is released; (6) Suitable for long-distance transportation and export. The quality of fruits and vegetables has significantly improved, creating conditions for export and transportation; (7) Many fruits and vegetables can achieve seasonal production, annual sales, and annual supply, creating good social and economic benefits.

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