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园艺学报 ›› 2005, Vol. 32 ›› Issue (5): 793-797.

• 研究论文 • 上一篇    下一篇

ABA、GA3 处理对冬枣采后果肉活性氧代谢的影响

李红卫;韩 涛;李丽萍;冯双庆;赵玉梅   

  1. (1 北京农学院食品科学系, 北京102206; 2 中国农业大学食品科学与营养工程学院, 北京100083)
  • 收稿日期:2004-11-29 修回日期:2005-04-11 出版日期:2005-10-25 发布日期:2005-10-25

Effect of ABA and GA3 Treatments on the Metabolism of Active Oxygen Species in Cold Stored ‘Brumal Jujube’Flesh

Li Hongwei;Han Tao;Li Liping;Feng Shuangqing;Zhao Yumei   

  1. (1Department of Food Science, Beijing Agricultural College, Beijing 102206, China; 2College of Food Science and Nutrional Engineering, China Agricultural University, Beijing 100083, China)
  • Received:2004-11-29 Revised:2005-04-11 Online:2005-10-25 Published:2005-10-25

摘要: 研究了100 mg·L - 1脱落酸(ABA) 和100μg·L - 1赤霉素(GA3 ) 处理对冬枣冷藏期间果肉
超氧阴离子自由基生成速率, 丙二醛、过氧化氢含量及相关酶活性变化的影响。结果表明: 低温( 0 ±2) ℃贮藏条件下, ABA处理促进了冬枣果肉丙二醛和过氧化氢的积累, 增大了超氧阴离子生成速率, 促进了过氧化氢酶(CAT) 和过氧化物酶( POD) 活性高峰提前出现, 多酚氧化酶( PPO) 活性的峰高增加,抗坏血酸氧化酶(AAO) 活性上升和酚类物质的快速下降, 说明果实后熟衰老被ABA处理提前, 而GA3具有延缓作用, ABA和GA3处理对活性氧代谢具有拮抗作用。

关键词: 枣, 冷藏, 脱落酸, 赤霉素, 活性氧

Abstract: The changes of active oxygen species in ‘Brumal Jujube’flesh treated with 100 mg·L - 1 ABA or 100μg·L - 1 GA3 during cold storage 〔(0 ±2) ℃, 60 days〕, including the p roduction rate of superoxide anion, contents of malondialdehyde (MDA ) or H2O2 and activities of catalase (CAT) , peroxidase
( POD ) , polyphenoloxidase ( PPO ) and ascorbic acid oxidase (AAO ) , were investigated. The results showed that ABA increased the p roduction rate of superoxide anion, promoted the accumulations of MDA and H2O2 in ‘Brumal Jujube’during storage, the activity peaks of CAT, PPO and POD were advanced, and AAO activity kep t increasing, the content of total phenols decreased sharp ly, all of the parameters above were higher than those in control. They suggested that ABA treatment accelerated the senescence of‘Brumal Jujube’fruit. The effects of ABA on ‘Brumal Jujube’fruit were opposite to GA3.

Key words: Jujube, Storage, ABA, GA3, Active oxygen species

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