Influences of 1-methylcyclopropene-containing papers on the metabolisms of membrane lipids in Anxi persimmons during storage  

作　　者：Hui Wang Guo Chen Lili Shi Hetong Lin Yihui Chen Yifen Lin Zhongqi Fan 

机构地区：[1]College of Food Science,Fujian Agriculture and Forestry University,Fuzhou,China [2]Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products(Fujian Agriculture and Forestry University),Fujian Province University,Fuzhou,China

出　　处：《Food Quality and Safety》2020年第3期143-150,共8页食品品质与安全研究（英文版）

基　　金：This study was supported by the Project of Finance Department of Fujian Province in China(KLe16H01A,KLe16002A);the Science and Technology Innovation Foundation at Fujian Agriculture and Forestry University of China(CXZX2016086,KF2015051).

摘　　要：Objectives:The aim of this work was to analyse the effects of 1-methylcyclopropene(1-MCP)treatment on the metabolisms of membrane lipids in postharvest Anxi persimmons during storage.Materials and methods:Anxi persimmon(Diospyros kaki L.f.cv.Anxi)fruits were treated by paper containing 1-MCP with a concentration of 1.35μl/l.The cellular membrane permeability was analysed by the electric conductivity meter.The activities of lipoxygenase(LOX),phospholipase(PLD)and lipase were determined by spectrophotometry.The component and relative amounts of membrane fatty acids were determined using gas chromatograph(GC).Results:The 1-MCP-treated Anxi persimmons manifested a lower electrolyte leakage rate,lower LOX,PLD and lipase activities,higher levels of unsaturated fatty acids(USFAs),higher ratio of USFAs to saturated fatty acids(SFAs)(U/S),higher index of USFAs(IUFA),but lower levels of SFAs.Conclusions:The degradation and the metabolisms of membrane lipids could be suppressed by 1-MCP treatment,which might be accountable for the delaying softening of postharvest Anxi persimmons during storage.

关 键 词：Anxi persimmon membrane lipids membrane-degrading enzymes membrane peroxidation 1-methylcyclopropene(1-MCP) 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]