在生物体内,某些细胞组分如叶绿素、血红蛋白的卟啉的光敏化作用及其他生化作用产生单线态氧(~1O_2),~1O_2是很强的亲电试剂,能与生物分子如氨基酸、蛋白质、酶、核酸等反应,导致机体的损伤,有报道:血卟啉症的血液病、多环芳烃致癌、亚硝胺致癌与~1O_2的作用有关及~1O_2作用引起细胞衰老,抗氧化物质如β—胡萝卜素、维生素A、核 In vivo, some cell components such as chlorophyll, hemoglobin porphyrin photosensitization and other biochemical effects of singlet oxygen (~ 1O_2), ~ 1O_2 is a strong electrophile, with biological molecules such as amino acids, Protein, enzymes, nucleic acids and other reactions, leading to body damage, it has been reported: hematoporphyrin blood disease, carcinogenic PAHs, carcinogenic nitrosamines and ~ 1O_2 role and ~ 1O_2 caused by cell aging, antioxidant substances Such as β-carotene, vitamin A, nuclear