| 高氧处理对冬枣货架期间膜脂过氧化和保护酶活性的影响 |
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| 引用本文： | 王贵禧,李鹏霞,梁丽松,樊金拴.高氧处理对冬枣货架期间膜脂过氧化和保护酶活性的影响[J].园艺学报,2006,33(3):609-612. |
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| 作者姓名： | 王贵禧 李鹏霞 梁丽松 樊金拴 |
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| 作者单位： | (中国林业科学研究院林业研究所, 国家林业局林木培育重点实验室, 北京100091; 西北农林科技大学林学院,陕西杨凌712100) |
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| 摘 要： | 研究了在- 1～ - 2℃条件下冬枣果实经流动的21% O2 (空气对照) 、70% O2 ( 30%N2 ) 、100% O2 分别处理7 d和15 d, 在20℃货架期期间测定果实相对电导率、丙二醛(MDA) 含量以及保护酶系( SOD、CAT、POD) 活性的变化。结果表明, 高O2 处理可抑制冬枣货架期相对电导率的升高, 100%O2 处理效果好于70% O2 处理。70% O2 处理7 d对冬枣货架期期间的膜脂过氧化作用没有显著影响, 但诱导了SOD、CAT和POD活性的升高, 促进冬枣果实在货架期衰老。100% O2 处理能抑制冬枣果实货架期膜脂过氧化作用, 在货架期期间保持较稳定的SOD和CAT活性, 但对POD 活性的升高有促进作用。总体来看, 100% O2 处理15 d对减缓冬枣货架期的衰老代谢有较好效果。
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| 关 键 词： | 冬枣 高氧处理 货架期 膜脂过氧化 保护性酶 |
| 文章编号： | 0513-353（2006）03-0609-04 |
| 收稿时间： | 2005-06-06 |
| 修稿时间： | 2005-06-062005-09-25 |
Effect of Postharvest High-oxygen Treatments on ‘Dongzao’ Jujube Membrane Lipids Peroxidation and Defensive Enzyme Activities during Shelf-life |
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| Wang Guixi,Li Pengxia,Liang Lisong,Fan Jinshuan.Effect of Postharvest High-oxygen Treatments on ‘Dongzao’ Jujube Membrane Lipids Peroxidation and Defensive Enzyme Activities during Shelf-life[J].Acta Horticulturae Sinica,2006,33(3):609-612. |
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| Authors: | Wang Guixi Li Pengxia Liang Lisong Fan Jinshuan |
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| Institution: | (Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China; College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China) |
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| Abstract: | The effects of postharvest high-oxygen treatments on relative electric conductivity, malondialdehyde (MDA) content, and activities of defensive enzymes ( SOD, CAT, POD) in ‘Dongzao’ jujube( Zizyphus Jujuba Mill. ) fruit were investigated during shelf-life. ‘Dongzao’ jujube fruitwere p laced in jars and ventilated continuously with air (21% O2 ) , 70% O2 + 30%N2 or 100% O2 at - 1 to - 2℃ for 7 or 15 days, and then placed at 20℃ for the test of shelf-life. The results showed that high-oxygen treatments could inhibit the increase of relative electric conductivity and the treatment with 100% O2 was more effective than that of 70% O2. 70% O2 treatment for 7 d had not positive effects on reducing the MDA contents, but induced the high levels of SOD, CAT and POD activities. The result indicated that 70% O2 postharvest treatment fastened the senescence of jujube fruits during shelf-life. Treatment with 100% O2 for 15 d was the most effective in keeping membrane permeability and maintaining the activities of defensive enzyme during shelf-life. |
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| Keywords: | Jujube High-oxygen treatment Shelf-life Membrane lipid peroxidation Defensive enzymes |
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