Antioxidant Activity of Supramolecular Water-Soluble Fullerenes Evaluated by β-Carotene Bleaching Assay
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We investigated the antioxidant activity of supramolecular water-soluble fullerenes, polyvinylpyrrolidone (PVP)-entrapped C<SUB>60</SUB>, and γ-cyclodextrin (CD)-bicapped C<SUB>60</SUB>, based on comparable β-carotene bleaching assay. Antioxidant activity against reactive oxygen species (ROS) generated by three different methods, (i) autoxidation of linoleic acid, (ii) hydrogen peroxide promoter, and (iii) photoirradiation, was evaluated as percent of inhibition relative to a control experiment in view of the bleaching rate constant (<I>k</I><SUB>obs</SUB>) as well as the persistent absorbancy of β-carotene. Water-soluble fullerenes exhibit significant inhibitory effects on the oxidative discoloration of β-carotene in any system.
- Agricultural and Biological Chemistry
Agricultural and Biological Chemistry 70(12), 3088-3093, 2006-12-23
Japan Society for Bioscience, Biotechnology, and Agrochemistry