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.

脂的自动化是一个自由基连锁反应，诱期中启动自由基的诱发剂可能是脂、化，但多数为过渡金属离子。