什么是单线态氧? 单线态氧指单态氧单态氧(Singlet oxygen,1O2)是分子氧的顺磁性状态的一种通称,属于活性氧(reactive oxygen),是普通氧(3O2)的激发态32313133353236313431303231363533e78988e69d8331333431363664。单线态氧属于活性氧(reactive oxygen),是普通氧(3O2)的激发态。总自旋为零,无顺磁性。单线态氧虽不是自由基,但因解除了自旋限制所以反应活性远比普通氧高。1O2在许多自由基反应中可以形成。扩展资料:体内正常代谢可以产生活性氧。线粒体是活性氧的一个重要来源,活性氧族如超氧阴离子自由基(O2-·)、过氧化氢(H2O2)、羟自由基(OH·)和单线态氧都是有氧代谢的副产物。在大多数细胞中超过90%的氧是在线粒体中消耗的,其中2%的氧在线粒体内膜和基质中被转变成为氧自由基。体内的活性氧并不总是有害的,它对机体也有有利的一面。例如,机体内吞噬细胞在细胞膜受到刺激时,通过呼吸暴发机制,产生大量活性氧(reactive oxygen species,ROS),ROS 是吞噬细胞发挥吞噬和杀伤作用的主要介质。但是在病理条件下,由于活性氧的产生和清除失去了正常平衡,常常会造成活性氧对人体的损伤。参考资料来源:-活性氧参考资料来源:-单线态氧
单线态氧是自由基吗 三线态的氧是自由基,也是基态氧;三线态的氧是自由基,也是基态氧;单线态的氧有两种,一种电子成对,不是自由基;另一种电子不成对(各占一个轨道且自旋方向相反),仍然。
英语翻译 Lycopene is a natural pigment contained in plants.It is mainly found in the matured fruits of the Solanaceae plant,tomato.It is currently the most powerful antioxidant discovered in nature.Science evidence shows that,singlet oxygen and oxygen free radical in the human body,are the primary factor that invades the human's natural immunization system.The effect of Lycopene in clearing oxygen free radical is much greater than other kinds of carotene and vitamine E.It's rate constant in exterminating singlet oxygen is 100 times that of regular vitamine E.It can effectively in prevent aging,and other illnesses created by a dropping of immunity.Therefore,it is at the attention of many specialists across the world.全手翻.希望能帮到你^