生育三烯酚C苯氧自由基与超氧阴离子反应性的脉冲辐解研究

Pulse radiolysis study of the reactivity of Trolox C phenoxyl radical with superoxide anion.

作者信息

Cadenas E, Merényi G, Lind J

机构信息

Department of Pathology II, University of Linköping, Sweden.

出版信息

FEBS Lett. 1989 Aug 14;253(1-2):235-8. doi: 10.1016/0014-5793(89)80966-4.

DOI:10.1016/0014-5793(89)80966-4

PMID:2547658

Abstract

The reaction between the phenoxyl radical of Trolox C, a water-soluble vitamin E analogue, and superoxide anion radical was examined by using the pulse radiolysis technique. The results indicate that the Trolox C phenoxyl radical may undergo a rapid one-electron transfer from superoxide radical [k = (4.5 +/- 0.5) x 10(8) M-1.S-1] to its reduced form. This finding indicates that superoxide radical might play a role in the repair of vitamin e phenoxyl radical.

摘要

利用脉冲辐解技术研究了水溶性维生素E类似物Trolox C的苯氧自由基与超氧阴离子自由基之间的反应。结果表明，Trolox C苯氧自由基可能经历超氧自由基的快速单电子转移[k = (4.5 ± 0.5) x 10(8) M-1·S-1]形成其还原形式。这一发现表明超氧自由基可能在维生素E苯氧自由基的修复中起作用。