Effects of Micro-Vacuum Storage Conditions on the Membrane Lipid Peroxidation of Laiyang Pear

Abstract:

In this manuscript,Laiyang pear was as research model to demonstrate the physiological mechanism of aging under micro-vacuum storage.For this,pear at store under micro-vacuum storage at the pressure of 66 661~79 993.2 Pa and the temperature of 3±1 ℃,and the parameters such as CAT,SOD,POD,O2-· and H2O2.The relationship among LOX activity and MDA,membrane permeability was also studied.The results showed that the micro-vacuum storage could significantly improve the activity of SOD,CAT,POD.When compared that of atmosphere storage but decrease the activity of LOX,the content of O2-· and H2O2.Furthermore,atmosphere storagedelay the relative electric conductivity and the increasing of MDA(P≤0.05).The experiment indicated that the micro-vacuum storage could reduce the reactive oxygen species and the damage of membrane to decrease the lipid peroxidation degree then to maintain membrane structure and function.