食品科学

• 包装贮运 • 上一篇    下一篇

1-MCP处理和打蜡处理对‘早红考密斯’西洋梨贮藏期和货架期保护性酶活性的影响

祝美云1,李小月1,2,梁丽松2,马庆华2,王贵禧2,*   

  1. 1.河南农业大学食品科学技术学院,河南 郑州 450002;2.中国林业科学研究院林业研究所,北京 100091
  • 出版日期:2015-12-25 发布日期:2015-12-24
  • 通讯作者: 王贵禧
  • 基金资助:

    “十二五”农村领域国家科技计划课题(2011BAD24B03)

Effect of 1-Methylcyclopropene (1-MCP) and Wax Treatments on the Activities of Protective Enzymes in Pyrus communis L. cv. ‘Doyenne du Comice’ during Cold Storage and Shelf Life

ZHU Meiyun1, LI Xiaoyue1,2, LIANG Lisong2, MA Qinghua2, WANG Guixi2,*   

  1. 1. College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China;
    2. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
  • Online:2015-12-25 Published:2015-12-24
  • Contact: WANG Guixi

摘要:

目的:研究1-甲基环丙烯(1-methylcyclopropene,1-MCP)和打蜡等采后处理措施对‘早红考密斯’西洋梨保护性酶活性的影响,为西洋梨果实的贮藏提供理论指导。方法:对‘早红考密斯’西洋梨做打蜡和不同剂量(0.5、1 μL/L)的1-MCP处理,研究其果肉和果皮组织在为期90 d的低温(0±0.5)℃贮藏,并在冷藏60、90 d后取样,在25 ℃进行货架期实验期间保护性酶活性代谢的变化。结果:在低温贮藏期间,1-MCP处理和打蜡处理均提高果肉组织超氧化物歧化酶(SOD)活性,降低果肉组织抗坏血酸过氧化物酶(APX)、过氧化物酶(POD)活性,降低果皮组织过氧化氢酶(CAT)活性。在冷藏60、90 d后的货架期间,打蜡处理增加果肉组织SOD活性,提高果皮组织POD活性。结论:1-MCP处理对改善果实低温贮藏期间的生理状态有积极意义,0.5 μL/L 1-MCP处理作用于果肉组织的效果好于1 μL/L 1-MCP处理,而1 μL/L 1-MCP处理作用于果皮组织的效果好于0.5 μL/L 1-MCP处理。打蜡处理更好地提高货架期果皮组织的效果。另外,在低温贮藏90 d期间和常温货架5 d期间,果皮组织的SOD、CAT、APX、POD的保护性酶活性远高于果肉组织。

关键词: &lsquo, 早红考密斯&rsquo, 西洋梨, 保护性酶活性, 果肉组织, 果皮组织, 贮藏期, 货架期

Abstract:

Purpose: To study the effect of different postharvest treatments with 1-methylcyclopropene (1-MCP) or wax on
the activities of protective enzymes in Pyrus communis L. cv. ‘Doyenne du Comice’. Methods: The pear fruits were treated
respectively with 1-MCP at 0.5 and 1 μL/L and wax after harvest and then stored in a cold room at (0 ± 0.5) ℃. The activities
of protective enzymes in flesh and peel during 90 days of storage at low temperature and during shelf life storage at 25 ℃
after 60 and 90 days of cold storage were assayed. Results: During cold storage, both 1-MCP and wax treatments improved
superoxide dismutase (SOD) activity in flesh and reduced the activities of ascorbate peroxidase (APX) and peroxidase (POD)
in flesh and catalase (CAT) activity in peel. During shelf life storage, wax treatment could improve SOD activity in flesh
and POD activity in peel. Conclusions: 1-MCP treatment has a positive effect on the physiology of pear fruits during cold
storage, which is more effective at 0.5 μL/L than at 1 μL/L for flesh, while the contrary result was observed for peel. Wax
treatment shows a better effect on peel during shelf life. In addition, the activities of protective enzymes SOD, CAT, APX
and POD in peel are much higher than in flesh during 90 days of cold storage and also during 5 days of subsequent storage at
room temperature.

Key words: Pyrus communis L. cv. ‘Doyenne du Comice’, protective emzyme activity, flesh, peel, storage time, shelf life

中图分类号: