乙醇溶液中HO2/O2-与不饱和氢过氧化物反应活性的研究。

Studies of the reactivity of HO2/O2- with unsaturated hydroperoxides in ethanolic solutions.

作者信息

Thomas M J, Sutherland M W, Arudi R L, Bielski B H

出版信息

Arch Biochem Biophys. 1984 Sep;233(2):772-5. doi: 10.1016/0003-9861(84)90505-8.

Abstract

A study of the reactivity of HO2/O2- with unsaturated hydroperoxides/peroxides was carried out in a stopped-flow spectrophotometer equipped with an O2--generating plasma lamp. The results show that, in 80% aqueous ethanol solution containing either 0.05 M H2SO4 (for HO2 studies) or 0.005 M KOH (for O2- studies), these oxy-radicals do not react with oleic acid hydroperoxide, linoleic acid hydroperoxide, 1-hydroperoxy-2-cyclooctene, and tert-butyl allyl peroxide. These findings are discussed in the light of conflicting evidence concerning the reaction of HO2/O2- with organic hydroperoxides/peroxides.

摘要

在配备有产生O₂⁻的等离子体灯的停流分光光度计中，对HO₂/O₂⁻与不饱和氢过氧化物/过氧化物的反应活性进行了研究。结果表明，在含有0.05 M H₂SO₄（用于HO₂研究）或0.005 M KOH（用于O₂⁻研究）的80%乙醇水溶液中，这些氧自由基不与油酸氢过氧化物、亚油酸氢过氧化物、1-氢过氧基-2-环辛烯和叔丁基烯丙基过氧化物反应。根据关于HO₂/O₂⁻与有机氢过氧化物/过氧化物反应的相互矛盾的证据，对这些发现进行了讨论。