Oxidation of Lipids. II. Rate of Inhibition of Oxidation by α-Tocopherol and Hindered Phenols Measured by Chemiluminescence
Oxidation of Lipids. II. Rate of Inhibition of Oxidation by α-Tocopherol and Hindered Phenols Measured by Chemiluminescence
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通过化学发光测量的 α-生育酚和受阻酚的氧化抑制率
DOI：
10.1246/bcsj.55.1551
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发表时间：
1982
影响因子：
4
通讯作者：
Y. Kamiya
中科院分区：
文献类型：
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作者：
E. Niki;Ritsuko Tanimura;Y. Kamiya
用化学发光法测定了过氧自由基与α-生育酚和受阻酚相互作用的速率常数。研究了二过氧草酸二叔丁酯在邻二氯苯中的热分解反应，发现在氧气存在下，二过氧草酸二叔丁酯在邻二氯苯中的热分解反应均产生化学发光。9，10-二溴蒽是一种有效的活化剂。1-四氢呋喃的加入在氧气存在和不存在下都产生化学发光，而叔丁基过氧化氢的加入几乎完全抑制了化学发光，即使在氧气下。α-生育酚和酚类的加入也减弱了化学发光，但在达到最小强度后，随着抑制剂的消耗，化学发光再次增加。α-生育酚、2，4，6-三叔丁基苯酚和2，6-二叔丁基-4-甲基苯酚清除1-苯乙基过氧自由基的速率常数分别为1.5×105、1.2×104和1.0×104 M−1 s−1（1 M=1 mol dm−3）。
The rate constants for the interactions of peroxyl radicals with α-tocopherol and hindered phenols were determined by chemiluminescence method. The thermal decomposition of di-t-butyl diperoxyoxalate in o-dichlorobenzene with and without ethylbenzene was found to give chemiluminescence under oxygen. 9,10-Dibromoanthracene was an effective activator. The addition of 1-tetralyl hydroperoxide gave chemiluminescence both in the presence and absence of oxygen, while the addition of t-butyl hydroperoxide suppressed the chemiluminescence almost completely even under oxygen. The addition of α-tocopherol and phenols also diminished the chemiluminescence, but after reaching the minimum intensity it again increased as the inhibitors were consumed. The rate constants for the scavenging of 1-phenylethylperoxyl radical by α-tocopherol, 2,4,6-tri-t-butylphenol and 2,6-di-t-butyl-4-methylphenol were obtained as 1.5×105, 1.2×104, and 1.0×104 M−1 s−1 (1 M=1 mol dm−3) respectively.
α-生育酚及其模型化合物与超氧离子反应自由基的电子自旋共振研究
DOI：
10.1016/0005-2760(78)90183-2
发表时间：
1978
期刊：
Biochimica et Biophysica Acta
影响因子：
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作者：
Ozawa Toshihiko;Hanaki Akira;Matsumoto Shigenobu;Matsuo Mitsuyoshi
通讯作者：
Matsuo Mitsuyoshi