| 摘要 |
<p>All antioxidants must be in a reduced form to be therapeutically active. They are easily oxidized by air oxygen, pollutants, ozone, ferric ions abundant in drinking water, light and other oxidative intervention and become inactive. Stabilizers that have higher redox potentials than antioxidants protect them from oxidative damage. Catechins and their congeners are antioxidants, but their relative redox potentials as well as their qualification as stabilizers are not known until these experiments. These experiments show that catechins (3",4",5,7-pentahydroxyflavan) and their congeners (proanthocyandins, polyhydroxy flavans, polyhydroxyflavones, and polyphenols), and natural products containing them have higher redox potentials, thereby protecting antioxidants from oxidative inactivation. Stabilizer-added antioxidant formulations and products are the core of this invention to maintain the full activity of the antioxidants.</p> |
