Table 1 DPPH radical scavenging activity of methanol extract and isolated compounds from the stem bark of Kirkia tenuifolia Engl.

1000

92.52 ± 0.44

72.60 ± 0.44

93.57 ± 0.0

87.83 ± 0.37

81.46 ± 0.60

90.57 ± 0.52

91.57 ± 0.3

69.28 ± 0.67

66.2 ± 0.85

94.37 ± 0.37

500

90.25 ± 0.52

66.54 ± 0.52

86.24 ± 0.97

83.62 ± 0.21

77.93 ± 0.67

86.46 ± 0.67

87.24 ± 0.44

64.33 ± 0.52

62.8 ± 0.85

91.83 ± 0.82

250

86.46 ± 0.52

63.17 ± 0.23

80.08 ± 0.59

78.61 ± 1.05

74.13 ± 0.66

82.56 ± 0.66

83.56 ± 0.59

61.54 ± 0.44

53.6 ± 0.28

87.04 ± 0.30

125

80.3 ± 0.74

58.9 ± 0.44

74.71 ± 0.59

71.81 ± 0.82

66.33 ± 0.52

74.98 ± 0.97

77.87 ± 0.59

55.95 ± 0.89

49.4 ± 0.56

81.09 ± 0.37

62.5

74.24 ± 0.52

54.8 ± 0.44

69.39 ± 0.52

63.64 ± 0.44

63.6 ± 0.67

69.92 ± 0.37

71.7 ± 0.67

53.11 ± 0.59

44.8 ± 0.28

78.72 ± 0.60

IC₅₀ (µg/mL)

1.40

30.11

7.05

10.99

9.00

4.32

2.58

39.37

128.9

0.60