水杨酸甲酯清除羟基自由基活性的研究

Study on the Scavenger Activities of Methyl Salicylate against Hydroxyl Radical

利用脉冲辐解技术研究了水杨酸甲酯清除羟基自由基反应的瞬态吸收谱,测定了水杨酸甲酯与羟基自由基反应的表观速率常数。辅以常规检测方法,测定了水杨酸甲酯对羟基自由基的清除率。结果表明,水杨酸甲酯能快速有效清除羟基自由基。探讨了水杨酸甲酯清除羟基自由基的反应机制。

The scavenger activities of methyl salicylate towards the hydroxyl radical and its reaction mechanism were studied using pulse radiolytic technique and general test method. The apparent rate constants for reactions of hydroxyl radical and methyl salicylate were determined by growth trace of transient absorptions arising from the scavenging of hydroxyl radical by methyl salicylate. Thus methyl salicylate is a good antioxidant.