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Table 3 Antioxidant activities of extracts and some isolated compounds from R. abyssinicus

From: Antibacterial, antifungal and antioxidant activities of whole plant chemical constituents of Rumex abyssinicus

Extracts/compounds

DPPH free radical scavenging activity (EC50, μg/mL)

Gallic acid equivalent antioxidant capacity (GEAC, μg/mL)

MeOH extract

62.11 ± 0.39a

73.23 ± 0.61a

EtOAc fraction

72.29 ± 0.71b

58.44 ± 0.38b

n-BuOH fraction

76.54 ± 0.78c

40.46 ± 0.74c

1

4.52 ± 0.36d

104.87 ± 1.43d

2

3.08 ± 0.44e

106.03 ± 0.87d

4

10.69 ± 0.51f

79.54 ± 1.26e

5

9.88 ± 0.62f

81.09 ± 0.93e

6 + 7

7.63 ± 1.27g

83.38 ± 0.22f

Vitamin C

1.81 ± 0.19h

/

  1. EC50: Equivalent concentrations of test samples scavenging 50% of DPPH radical. Data represent the mean ± SD of three independent experiments carried out in triplicate. In the same column, values affected by different superscript letters (a-h) are significantly different according to one way ANOVA and Waller Duncan test; p < 0.05; /: not determined