食品科学 ›› 2020, Vol. 41 ›› Issue (23): 205-211.doi: 10.7506/spkx1002-6630-20200302-031

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1-甲基环丙烯处理对采后‘油㮈’果实呼吸速率和活性氧代谢的影响

林静颖,李辉,袁芳,林育钊,林河通   

  1. (1.福建农林大学食品科学学院,福建 福州 350002;2.亚热带特色农产品采后生物学(福建农林大学)福建省高校重点实验室,福建 福州 350002;3.福建农林大学农产品产后技术研究所,福建 福州 350002;4.闽南师范大学生物科学与技术学院,福建 漳州 363000)
  • 出版日期:2020-12-15 发布日期:2020-12-28
  • 基金资助:
    福建省财政厅科技项目(KLe16H01A;KLe16002A);福建农林大学科技创新专项基金项目(CXZX2016086;KF2015051)

Effect of 1-Methylcyclopropene Treatment on Respiration Rate and Reactive Oxygen Species Metabolism during Postharvest Storage of ‘Younai’ Plum Fruit

LIN Jingying, LI Hui, YUAN Fang, LIN Yuzhao, LIN Hetong   

  1. (1. College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 2. Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China; 3. Institute of Postharvest Technology of Agricultural Products, Fujian Agriculture and Forestry University, Fuzhou 350002, China; 4. School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, China)
  • Online:2020-12-15 Published:2020-12-28

摘要: 为研究1-甲基环丙烯(1-methylcyclopropene,1-MCP)处理对采后‘油?’果实呼吸速率和活性氧代谢的影响,将采后‘油?’果实经1.2 μL/L 1-MCP处理后,于(25±1)℃下贮藏,以不经1-MCP处理作为对照。结果表明:与对照组果实相比,1-MCP处理能有效降低‘油?’果实呼吸速率、超氧阴离子自由基产生速率和膜脂过氧化产物丙二醛含量,保持‘油?’果实较高的超氧化物歧化酶、过氧化物酶、过氧化氢酶和抗坏血酸过氧化物酶等活性氧清除酶活性,及较高的总酚、还原型抗坏血酸和还原型谷胱甘肽等内源抗氧化物质含量。因此认为,1.2 μL/L 1-MCP处理能有效降低采后‘油?’果实呼吸作用,同时提高采后‘油?’果实的活性氧清除能力、降低活性氧积累及抑制膜脂过氧化作用,从而提高采后‘油?’果实耐贮性、延长其果实保鲜期。

关键词: ‘油?’果实;1-甲基环丙烯;呼吸速率;活性氧代谢;耐贮性

Abstract: The effect of 1-methylcyclopropene (1-MCP) treatment on respiration rate and reactive oxygen species (ROS) metabolism during postharvest storage of ‘Younai’ plum (Prunus salicina Lindl. cv. Younai) fruit was investigated in the present study. Freshly harvested fruit were treated with 1.2 μL/L 1-MCP, and then stored at (25 ± 1)℃. The results showed that compared with the untreated control, 1-MCP treatment effectively reduced respiration rate, the production rate of superoxide anion radical (O2-·), and the content of malondialdehyde (MDA, a product of membrane lipid peroxidation), and maintained higher activities of ROS scavenging enzymes including superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX), and higher contents of endogenous antioxidant substances such as total phenols, ascorbic acid (AsA) and glutathione (GSH) in ‘Younai’ plums during postharvest storage. Therefore, 1.2 μL/L 1-MCP treatment could effectively reduce fruit respiration rate, increase ROS scavenging capacity, reduce ROS accumulation and suppress membrane lipid peroxidation, consequently improving the storability and extending the storage period of harvested ‘Younai’ plum fruit.

Key words: ‘Younai’ plum (Prunus salicina Lindl. cv. Younai) fruit; 1-methylcyclopropene; respiration rate; metabolism of reactive oxygen species; storability

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