过氧化氢(H_2O_2)能在各种生物体内内质网微粒体、线粒体、过氧化体、质膜等细胞器生物膜系统生成。组织中H_2O_2的产量一般只占细胞耗氧量的1～2％,以肝中产量为最高,如大鼠肝全部耗氧的近10％可用于H_2O_2生成,其中主要产于微粒体(45％)、过氧化体(35％)、线粒体(15％)和胞浆(5％)。同时组织中有高活力的H_2O_2清除系统(如过氧化氢酶和过氧化物酶类等),通常可边产生边迅速消除。细胞H_2O_2的生成是好多膜性和溶性 Hydrogen peroxide (H_2O_2) can be generated in various organism endoplasmic reticulum microsome, mitochondria, peroxisome, plasma membrane and other organelles biofilm system. The production of H 2 O 2 in tissues generally accounts for 1-2% of the cell oxygen consumption and highest in the liver. For example, nearly 10% of the total oxygen consumption of rat liver can be used for the generation of H 2 O 2, mainly in microsomes (45% ), Peroxide (35%), mitochondria (15%) and cytoplasm (5%). In the meantime, there are highly active H 2 O 2 scavenging systems (such as catalases and peroxidases) that can usually be eliminated rapidly while producing side effects. The formation of H 2 O 2 is much membrane-bound and soluble