纸片型1-MCP处理对‘朝霞’水蜜桃果实活性氧清除系统的影响  

Influences of paper-containing 1-methylcyclopropene treatment on reactive oxygen species scavenging system of’Zhaoxia’peach fruit

作　　者：张惠丽 肖烟云[1] 曾玲珍 郑江枫[1] 林艺芬[1,2] 林河通[1,2] ZHANG Hui-Li;XIAO Yan-Yun;ZENG Ling-Zhen;ZHENG Jiang-Feng;LIN Yi-Fen;LIN He-Tong(College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products(Fujian Agriculture and Forestry University),Fujian Province University,Fuzhou 350002,China)

机构地区：[1]福建农林大学食品科学学院,福州350002 [2]亚热带特色农产品采后生物学(福建农林大学)福建省高等学校重点实验室,福州350002

出　　处：《食品安全质量检测学报》2023年第3期144-150,共7页Journal of Food Safety and Quality

基　　金：福建农林大学科技创新基金项目(KFb22078XA、KFb22079XA)。

摘　　要：目的研究纸片型1-甲基环丙烯(1-methylcyclopropene,1-MCP)处理对‘朝霞’水蜜桃果实活性氧(reactive oxygen species,ROS)清除系统的影响。方法用1.2μL/L纸片型1-MCP处理‘朝霞’水蜜桃12 h,以没有1-MCP处理的‘朝霞’水蜜桃为对照,果实在(25±1)℃下贮藏12d,每隔2d取样分析果实超氧阴离子自由基(O_(2)^(-)·)产生速率、丙二醛(malondialdehyde,MDA)含量、内源抗氧化物质含量和ROS清除酶活性的变化。结果与对照‘朝霞’水蜜桃比较,1-MCP处理的‘朝霞’水蜜桃显现出较低的O_(2)^(-)·产生速率和MDA含量,较高的还原型谷胱甘肽和抗坏血酸含量,以及较高的过氧化氢酶、超氧化物歧化酶和抗坏血酸过氧化物酶活性。结论纸片型1-MCP处理能增强‘朝霞’水蜜桃ROS清除能力,有效减少其果实ROS的产生与MDA的积累,减轻‘朝霞’水蜜桃膜脂过氧化,维持细胞膜结构的完整性,从而保持‘朝霞’水蜜桃果实采后品质、增强其耐贮性。Objective To investigate the influences of paper-containing 1-methylcyclopropene(1-MCP)treatment on reactive oxygen species(ROS)scavenging system of‘Zhaoxia’peach fruit.Methods The postharvest‘Zhaoxia’peaches were treated with 1.2μL/L of paper-containing 1-MCP for 12 h,and the peaches without 1-MCP treatment were used as control,afterwards,the above-treated peaches were stored at(25±1)℃ for 12 days.During storage,at 2-days interval,superoxide anion radical(O_(2)^(-)·)generation rate,malondialdehyde(MDA)content,the levels of endogenous antioxidant substances,and ROS-scavenging enzymes activities were measured.Results Compared with the control peaches,1-MCP treated-peaches exhibited lower levels of O_(2)^(-)·generation rate and MDA content,but higher values of glutathione and ascorbic acid,and higher activities of catalase,superoxide dismutase and ascorbate peroxidase.Conclusion The postharvest treatment of paper-containing 1-MCP can enhance the ROS-scavenging ability to reduce ROS production and MDA accumulation,and then mitigate the peroxidation of membrane lipids and stabilize the structure integrity of cell membrane,and thus retain the quality and enhance the storability of postharvest‘Zhaoxia’peach fruit.

关 键 词：水蜜桃果实 耐贮性 活性氧 活性氧清除系统 膜脂过氧化 1-甲基环丙烯 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]