Kinetic Studies of the Free Radical-Scavenging Actions of Tocopherol Metabolites(alpha-,gamma-,and delta-Carboxyethyl-6-hydroxychroman)and Trolox in Ethanol and Micellar Solutions

摘要

The reaction rates(k_s)of tocopherol metabolites(alpha-,gamma-,and delta-CEHC)and Trolox with aroxyl radical have been measured in ethanol and micellar solution by a stopped-flow spectrophotometer,and the K_s values obtained were compared with those reported for tocopherols(alpha-,beta-,gamma-,and delta-tocopherol,TocH)and tocol.The rate constants(K_s)increased in the order of Tocol