Research of micro- perforated plastic film storage performance of green soybean at different temperature

A new method of green soybean storage was investigated so as to reduce the postharvest loss in logistics.The effect of different temperatures( 0,4,9℃) on the material quality and storage performance were studied using micro- perforated plastic film as green soybean's package in this research.The results indicated that the storage time was significantly varied at different temperature. The rotting and weight loss rates decreased gradually with respect to a lower temperature,thus a higher storage quality and longer storage time.Under a low temperature,the soybeans were kept at a relatively low membrane permeability and MDA content,meanwhile the decrement in soluble protein was slower and the content of chlorophyll increased.During the storage process,the minimum oxygen content was as low as 17% in the micro- perforated plastic film package with 1.15% ~4.53% for carbon dioxide,under such condition,no obvious water loss and gas injury were observed on the soybeans.