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林业科学 ›› 2007, Vol. 43 ›› Issue (08): 36-40.doi: 10.11707/j.1001-7488.20070806

• 论文及研究报告 • 上一篇    下一篇

超声波结合钙处理对桃果实采后活性氧代谢的影响

李萍1,2 韩涛1 李丽萍3 王忠民2   

  1. 1.北京农学院食品科学系,北京102206;2.新疆农业大学食品学院乌鲁木齐830052;3.北京工商大学,北京100037
  • 收稿日期:2006-07-19 修回日期:1900-01-01 出版日期:2007-08-25 发布日期:2007-08-25

Effect of Ultrasound Wave Combined with Calcium on Reactive Oxygen Metabolism of Postharvest Peach

Li Ping1,2,Han Tao1,Li Liping3,Wang Zhongmin2   

  1. 1.Department of Food Science,Beijing University of Agriculture Beijing 102206;2.College of Food,Xinjiang Agricultural University Urumqi 830052;3.Beijing Technology & Business University Beijing 100037
  • Received:2006-07-19 Revised:1900-01-01 Online:2007-08-25 Published:2007-08-25

摘要:

采用强度为50kHz、输出功率为200W的超声波结合3%的CaCl2溶液处理桃果实,处理时间为3min,分别做4个处理:对照(用清水浸泡果实3min)、超声波处理、浸钙处理、超声波结合钙处理,分析桃果实在(10±2)℃与(0±2)℃贮藏期间活性氧代谢的变化。结果表明:在2个温度下,超声波结合钙处理不同程度地提高了果实超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性,效果优于超声波处理或浸钙处理;在不同时期降低了过氧化氢(H2O2)含量、超氧负离子游离基(O2.-)生成速率和过氧化物酶(POD)活性;在货架期间,不同处理间这些变化的差异不明显。

关键词: 桃, 超声波, 钙处理, 活性氧代谢, 贮藏

Abstract:

Harvested peach(Amygdalus persica)fruits were by ultrasound wave(50 kHz,200 W),CaCl_2(3%)immersion,or their combinations for 3 min.The active oxygen metabolism of the fruits stored at(10±2)℃ or(0±2)℃ was investigated.The results showed that at the two temperatures the combinations of ultrasound wave with calcium increased the activities of superoxide dismutase(SOD)and catalase(CAT)of peach in various extents,efficiency of which was superior to those in the fruits treated with ultrasound wave or calcium,decreased the activities of peroxidase(POD),the production rate of superoxide anion radical(O-.2),or the contents of hydrogen peroxide(H2O2)at different periods of storage.There were no obvious differences of the parameters above among the treatments of fruits during the shelf life.

Key words: peach, ultrasound wave, calcium, reactive oxygen metabolism, storage