[Ability of catechin to eliminate O2-* and *OH].

OBJECTIVE

To investigate the eliminating ability of catechin to eliminate O2-* and *OH.

METHODS

The ability of catechin to clear away O2-* and *OH was respectively measured by faintness chemiluminescence and spin trapping assay.

RESULTS

IC50 that catechin eliminated O2-* and *OH was 6.16, 0.59 g/mL respectively, and the eliminating ability of catechin was much stronger than that of the extract from liquorice, rosemary, grape pip, giant knotweed and ginkgo leaf.

CONCLUSIONS

Compared with several important natural plants of antioxidants, the eliminating ability of cathechin is the best.