Postharvest quality and reactive oxygen species metabolism improvement of Coprinus comatus mushroom using allyl isothiocyanate fumigation  

作　　者：Enping Zheng Zhihang Zheng Shiya Ren Huabin Zhou Hailong Yang 郑恩萍;郑智汉;任诗雅;周化斌;杨海龙(College of Life&Environmental Science,Wenzhou University,Chashan University Town,Wenzhou,China)

机构地区：[1]College of Life&Environmental Science,Wenzhou University,Chashan University Town,Wenzhou,China

出　　处：《Food Quality and Safety》2022年第4期466-474,共9页食品品质与安全研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.31871849);the Leading Talent Project of Science and Technology Innovation in Zhejiang Province(No.2019R52041),China.

摘　　要：The aim of this study was to evaluate the effect of allyl isothiocyanate(AITC)on the reactive oxygen species(ROS)metabolism and quality of postharvest Coprinus comatus(C.comatus).Fresh mushrooms were stored at 4℃with AITC at 5,10,and 20μL/L for 18 d,respectively.Sampling was performed every 3 d,and physicochemical parameters and ROS metabolism related enzymes activities were analyzed.Compared with the control,the application of AITC at 10μL/L significantly(P<0.05)decreased xanthine oxidase activity after 9 d of storage,while it significantly(P<0.05)improved the activities of succinic dehydrogenase,glutathione reductase,peroxidase,catalase,and ascorbate peroxidase in the middle and later stages of storage.Furthermore,the Ca^(2+)-ATPase and superoxide dismutase activities in sample treated by 10μL/L were all significantly(P<0.05)higher than those in the control.Therefore,the accumulation trends of malondialdehyde and ROS were retarded and membrane integrity was maintained.However,high-concentration AITC(20μL/L)treatment accelerated the ROS generation and increased electrolyte leakage rate.All AITC treatments significantly(P<0.05)inhibited the respiration rate during the first 9 d of storage and retarded browning of C.comatus during the storage of 18 d.These findings suggested that AITC treatment would be a promising method to maintain C.comatus quality,but the concentrations need to be optimized.

关 键 词：Coprinus comatus allyl isothiocyanate POSTHARVEST reactive oxygen species METABOLISM 

分 类 号：O62[理学—有机化学]