Fruit and vegetables after leaving its roots are still live objects, they consume their nutrition and meantime let out CO2, H20 and energy (heat), this is respiration. To control the air of storage atmosphere in the stores is called CA storageControlled Atmosphere Storage). CA storage room is developed on the basis of Cold Stores, and it is the most advanced method of storing fruit and vegetables. Based on cold store, it changes the air ratios quickly in the storage environment , reduces the level of O2, raises the CO2 level so to restrain the respiration of the fruits and vegetables and realize long term storage and refreshment of the products. It is now considered the best preserve method for best quality fruit and vegetables.

                          C6H12O6 + 6O2 = 6CO2 + 6H2O + energy

• reduce temperature in store
• reduce O2 level restrain respiration and contain firmness of products
• control O2 and CO2 into desired ranges
• control water loss and ethylene level as well as the quality