Radical Exchange Reactions between Vitamin E, Vitamin C and Phospholipids in Autoxidizing Polyunsaturated Lipids
作者:
LambeletPierre,
SaucyFrançoise,
LöligerJürg,
期刊:
Free Radical Research
(Taylor Available online 1994)
卷期:
Volume 20,
issue 1
页码: 1-10
ISSN:1071-5762
年代: 1994
DOI:10.3109/10715769409145621
出版商: Taylor&Francis
关键词: ESR;antioxidant;vitamin E;vitamin C;phospholipid
数据来源: Taylor
摘要:
Antioxidant reactions of mixtures of vitamin E, vitamin C and phospholipids in autoxidizing lipids at 90°C have been studied by ESR spectroscopy. When the phospholipid contained a tertiary amine (e.g. phosphatidylcholine), the vitamin C and the vitamin E radicals were successively observed as these two vitamins were sequentially oxidised during lipid oxidation. In the presence of the primary amine contained in phosphatidylserine, the vitamin E oxidation was delayed for a few hours. In this case neither the vitamin C, nor the vitamin E radicals but a nitroxide radical derived from the phospholipid was observed. Similar results to those obtained with PS were obtained in the presence of either phospha-tidylethanolamine or soybean lecithin. The participation in the radical reactions of phospholipids possessing a primary amine can therefore explain the synergistic effect of these phospholipids in a mixture of vitamins E and C.
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