Interaction of Ascorbate and α‐Tocopherol

Interaction of Ascorbate and α‐Tocopherol
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抗坏血酸和 α-生育酚的相互作用

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发表时间:
1987
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通讯作者:
E. Niki
E. Niki
中科院分区:
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文献类型:
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作者:
E. Niki

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维生素C和E分别作为水溶性和脂溶性的抗氧化剂发挥作用,保护脂质、蛋白质和细胞膜免受氧化损伤。维生素C清除水相中的氧自由基,而维生素E清除膜中的氧自由基。维生素C通过减少维生素E清除氧自由基时形成的维生素E自由基来再生维生素E。维生素C和维生素E之间的这种相互作用不仅可以在均相溶液中发生,也可以在脂膜系统中发生,其中维生素C和维生素E分别位于膜外和膜内,维生素C可以起到增效剂的作用。
Vitamins C and E function as water-soluble and lipid-soluble chain-breaking antioxidants, respectively, and protect lipids, proteins, and membranes from oxidative damage. Vitamin C scavenges oxygen radicals in the aqueous phase, whereas vitamin E scavenges oxygen radicals within the membranes. Vitamin C regenerates vitamin E by reducing vitamin E radicals formed when vitamin E scavenges the oxygen radicals. This interaction between vitamin C and vitamin E radicals can take place not only in homogeneous solutions but also in liposomal membrane systems where vitamins C and E reside separately outside and within the membranes respectively, and vitamin C can act as a synergist.