期刊名称：Journal of Nutritional Science and Vitaminology
印刷版ISSN：0301-4800
电子版ISSN：1881-7742
出版年度：2003
卷号：49
期号：4
页码：217-220
DOI：10.3177/jnsv.49.217
出版社：Center for Academic Publications Japan
摘要：The antioxidant activities of natural d -α-tocopherol, mixed tocopherols and tocotrienols, and formulations comprising all forms of vitamin E, providing 400IU, were determined employing an improved oxygen radical absorbance capacity (ORAC) assay using fluorescein (FL) as the fluorescent probe, randomly methylated β-cyclodextrin (RMCD), 2, 2'-azobis(2-amidino-propane)dihydrochloride (AAPH) as the peroxyl radical generator, and Trolox as the standard in 75mM phosphate buffer. The antioxidant activities, expressed in μmol Trolox equivalent per gram, of d -α-tocopherol (87%), mixed tocopherols (70%), and tocotrienols (30%) were found to be 1, 293, 1, 948, and 1, 229, respectively. Some of the vitamin E formulations showed antioxidant activities superior to d -α-tocopherol.
关键词：vitamin E, tocopherol;tocotrienol;lipophilic antioxidant;oxygen radical absorbance capacity (ORAL)
