Effects of Different Treatments on the Quality and Antioxidant Enzyme Activities of Lentinus edodes during Storage

In order to explore the effect of different treatments on quality and antioxidant enzyme activities of Lentinus edodes during storage,Lentinus edodes as test material were divided into four treatments(CK,350 μL/L ethanol,25 mg/L ClO₂ and 20 g/L soy protein isolation). After the four treatment,Lentinus edodes were aired for 30 min. After pre-cooling at(4±0.5) ℃ for 8 h,the samples were transferred into the PE20 preservative films,and stored at(2±0.5) ℃. The sensory evaluation,rot ratio,respiration rate and the value of chromatism(L^*),the malondialdehyde contents(MDA),polyphenol oxidase(PPO)and antioxidant enzyme activities were detected every 5 d. The results showed that,compared with the CK treatment,the other three treatments could inhibit the increasing of rot ratio,respiration rates,MDA contents,PPO activity of the Lentinus edodes,reducing of the L^* and the declining of the sensory evaluation scores,and could also maintain the activities of the antioxidant enzyme system. The SOD of SPI was 1.43,1.14 and 1.09 times as active as CK,ethanol and ClO₂ treatments respectively. Besides that,SPI could maintain the activities of the POD,CAT and APX.