摘要
对脂类催化氧化作了全面、深入的研究。指出光敏性物质的存在是光氧化发生的直接因素，第一类光敏物可将底物活化成自由基，第二类光敏物诱发的反应为单线态氧和底物的协同反应，其氢过氧化产物不同于自动氧化的产物；脂氧酶能有选择性的催化多不饱和脂肪酸，且具有专一性，来自不同植物中的脂氧酶催化反应的产物也不同；金属催化的本质是自由基反应，过渡金属因其价态发生变化及其无处不有的特点，在脂类的催化氧化反应中，发挥着极其重要的作用，尤其三价铁是很强的自由基诱发剂。光氧化。
Catalytic oxidation of lipids is studied comprehensively and deeply. The existence of photosensitisers is the derect factor that bring out photoxidation reaction. The sensitiser 1 can activate substrates to free radical, the reaction induced by the sensitiser 2 is concert reaction by singlelet oxygen and substrates, the products are different from the hydroperoxides yielding by autoxidation;lipoxygenase may selectively catalyze unsaturated fatty acids, besides, it has speciality, reactions catalyzed by liposygenase from different plants yield different substances; the nature of metal catalysis is free radical reaction, transitional metals have various valences and are ubiquitous, so they play an extremely important role in catalyzing lipid oxidation,especially the Fe 3+ is a very strong free radical inducer.
出处
《中国油脂》
CAS
CSCD
北大核心
1998年第4期52-55,共4页
China Oils and Fats
基金
国家自然科学基金
关键词
油脂
氧化
光氧化
催化氧化
脂氧酶
光敏物
photoxidation metal catalytic oxidation lipoxygenase photosensitiser free radical
