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  • Title: The hydroxyl free radical reactions of ascorbyl palmitate as measured in various in vitro models.
    Author: Perricone N, Nagy K, Horváth F, Dajkó G, Uray I, Zs-Nagy I.
    Journal: Biochem Biophys Res Commun; 1999 Sep 07; 262(3):661-5. PubMed ID: 10471382.
    Abstract:
    The OH(*) free radical scavenging properties of ascorbyl palmitate (AP), water-solubilized in the presence of a surfactant (Brij 35), were tested in various systems: (1) The inhibition of polymerization of bovine serum albumin by OH(*) free radicals generated by the Fenton reaction indicated AP exerts a considerable protective effect against polymerization by scavenging the OH(*) free radicals. (2) ESR spin trapping comparisons of DMPO with AP were conducted. Using the Fenton reaction as a source of OH(*) free radicals, AP was 1 order of magnitude faster in scavenging these radicals than DMPO. (3) Oxidative modification of BSA by (60)Co-gamma irradiation of 80 krad, results in a strong increase in protein carbonyl content. AP inhibits carbonyl formation very efficiently, indicating that AP may be utilized as a biological OH(*) free radical scavenger in human therapy.
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