Synergistic Antioxidative Activity of Tea Polyphenols and Caroteniods

Use scavenging experiment of the system that were made up of DPPH radical and hydroxyl radical(·OH) to compare the antioxidant activity among the individual polyphenols and carotenoids and the compound of them. The result showed that : in the system of hydroxyl radical(·OH), the synergistic antioxidant capacity of both of them is more significant. When the concentration of polyphenols diluted double or triple and with the carotenoid concentration increasing, then the mixture of both hydroxyl radical(·OH) clearance rate also increased. In DPPH radical system, when the concentration of polyphenols diluted double or triples and with the carotenoid concentration increasing, then the mixture of both DPPH radical clearance rate raised first and educed later.