To test the antioxidant activity of the extracts of plants, 26 species within the University District. The leaves and bark with solvent ethanol. Then test the antioxidant activity by DPPH results of the tests showed that. Bark crescent white flowers have anti-DPPH best with IC50 values of 10.86 μg / ml with antioxidant activity higher standards, vitamin C (IC50 = 13.20 μg / ml), while the bark of mahogany with antioxidant activity. lowest IC50 value of 75.06 μg / ml and the extract samples with IC50 values lower than 25 kinds of vitamins standards.
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