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自由基是指化合物分子中的共价键,在体内代谢中发生均裂后所形成的外层轨道具有不成对电子的原子或原子团。它是普遍存在于生物体内的数量大种类多和活性高的一类过渡状态的中间产物。自由基在生物代谢过程中不断产生,并对自身组织产生毒害作用。
Free radicals refer to the covalent bonds in a compound molecule, which are atoms or atomic groups with unpaired electrons in the outer orbit after they are homogenized in the body metabolism. It is widespread in the body of a large number of species and activity of a class of transitional intermediate products. Free radicals are constantly produced in the process of biological metabolism and have a toxic effect on their own tissues.