Autoxidation of lipids is a chain raction of free radical.In the inducing stage,the inducers switching on free radical may be lipoxygenase or photoxidation,but the most is transitional metals.

脂类的自动氧化自由基连锁反应，期中启动自由基的可能脂氧酶、光氧化，但多数为过渡金属离子。