中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (4): 83-85.

• 研究简报 • 上一篇    下一篇

叶绿素a光诱导产生O2·-/OOH氧自由基

恽勤, 阎作琨   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-07-18 修回日期:1990-11-13 出版日期:1991-08-10 发布日期:1991-08-10

LIGHT-INDUCED FORMATION OF OXYGEN RADICALSO2·-/OOH BY CHLOROPHYLL a

Yun Qin, Yan Zuokun   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-07-18 Revised:1990-11-13 Published:1991-08-10 Online:1991-08-10

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摘要： 将ESR自旋捕俘技术应用于氧的瞬时自由基测定,为叶绿素a Ch a光诱导化学行为的研究,提供了更为有力的手段。Harbour和Bolton[1]用自旋捕俘剂DMPO(5,5-Dimethyl-1-pyrroline-N-oxide)首次证明,在光照下叶绿体可产生O2·-。

关键词: 叶绿素a, 氧自由基, 二甲基-吡咯啉-N-氧化物

Abstract: The oxygen radicals O2·-/OOH were observed in photochemical reaction of Chlorophyll a in the presence of oxygen.The ESR spectra of DMPO-OOH adduct were recorded directly byusing spin trap technique.The O2·-/OOH radicals were formed from oxygen dissolved inhe solutions studied, independent of the aggregation state of Chlorophyll a.

Key words: chlorophyll a, oxygen radical O2·-/OOH, dimethyl-Pyrroline-N-oxide

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