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Table 4 Scavenging activity by ABTS assay

From: Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Extract

%Scavenging activity (%SC)

mg VCEAC/g dry weight

Petroleum ether

Dichloromethane

Ethanol

Petroleum ether

Dichloromethane

Ethanol

Annona squamosa L.

29.89 ± 0.79

36.31 ± 0.60

99.13 ± 0.29

25.76 ± 0.76

34.40 ± 0.32

96.15 ± 0.38

Ardisia elliptica Thunb.

73.08 ± 1.48

90.01 ± 0.54

99.84 ± 0.07

65.28 ± 1.86

86.34 ± 1.07

96.97 ± 0.34

Croton roxburghii N.P.Balakr

12.19 ± 0.91

33.54 ± 0.65

73.86 ± 1.22

9.14 ± 0.45

33.22 ± 0.46

69.62 ± 0.90

Croton sublyratus Kurz

16.34 ± 0.69

18.47 ± 0.73

60.36 ± 0.17

13.07 ± 1.29

17.81 ± 1.20

58.62 ± 0.68

Datura metel L.

20.17 ± 0.68

43.79 ± 0.89

61.94 ± 0.50

16.42 ± 0.65

42.36 ± 1.11

60.06 ± 0.16

Garcinia mangostana Linn.

47.01 ± 2.73

97.96 ± 0.85

99.66 ± 0.05

45.10 ± 2.45

95.19 ± 1.43

96.52 ± 0.34

Gynura pseudochina (L.) DC.

NA

28.88 ± 0.45

27.52 ± 1.66

NA

28.00 ± 0.36

25.37 ± 1.99

Hibiscus mutabilis L.

NA

21.36 ± 0.51

44.74 ± 0.23

NA

20.34 ± 0.42

43.29 ± 1.26

Ipomoea pes-caprae (L.) R.br.

8.03 ± 0.54

32.30 ± 1.93

77.43 ± 1.74

4.53 ± 0.34

31.41 ± 2.73

75.16 ± 2.37

Phyllanthus acidus (L.) Skeels

NA

40.72 ± 1.25

99.43 ± 0.17

NA

40.06 ± 1.90

96.27 ± 0.10

Rhinacanthus nasutus (L.) Kurz

13.55 ± 0.49

28.90 ± 0.57

56.26 ± 0.90

10.60 ± 0.24

28.29 ± 1.77

53.26 ± 1.95

Senna alata (L.) Roxb.

12.51 ± 0.41

29.21 ± 1.35

99.45 ± 0.11

8.79 ± 0.17

28.97 ± 0.56

96.28 ± 0.12

Stemona curtisii Hook.f.

NA

27.65 ± 1.30

95.49 ± 0.25

NA

27.48 ± 0.11

91.91 ± 0.63

Streblus asper Lour.

NA

33.22 ± 0.77

87.32 ± 0.39

NA

32.92 ± 1.57

83.78 ± 0.90

  1. Each value is mean ± S.D. of triplicate independent analyses. Calculations of values are described in the Materials and Methods section. VCEAC Vitamin C Equivalent Antioxidant capacity, NA not available