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Table 3 Antioxidant activity of the crude extract, fractions and compounds from the stem bark of Polyscias fulva (IC 50 in μg/ml)

From: Antibacterial and antioxidant properties of crude extract, fractions and compounds from the stem bark of Polyscias fulva Hiern (Araliaceae)

Test substance

DPPH test

β- Carotene/ linoleic acid

1

1141.10 ± 0.05e

14.77 ± 0.49a

3

nd

98.09 ± 9.32b

7

135.39 ± 3.33abc

108.13 ± 17.59b

8

180.08 ± 83.07bc

291.68 ± 77.58c

9

277.55 ± 77.28d

nd

10

190.82 ± 74.30cd

nd

11

1961.90 ± 0.05f

768.24 ± 0.03f

Hexane fraction

nd

660.73 ± 21.52e

Crude extract

84.86 ± 0.00a

128.52 ± 0.00b

Ethyl acetate fraction

93.65 ± 0.00ab

91.21 ± 0.00b

n-butanol fraction

100.58 ± 0.00ab

128.04 ± 0.00b

L-ascorbic acid

58.29 ± 0.25a

386.26 ± 1.09d

  1. Along each column, values with the same letter superscripts are not significantly different. Waller Dunkan (p < 0.05). nd: not determined (RSa >2000 μg/ml)