Table 2 Concentration-dependent ABTS free radical scavenging activity of A. salicina leaves extracts and standard antioxidant Trolox

Aqueous extract

0.5

76 ± 1

2.19*

0.24*

2.5

100 ± 2

4.5

100 ± 3

7.5

100 ± 5

9.5

100 ± 2

TOF extract

0.5

100 ± 1

1.92*

0.11*

2.5

100 ± 2

4.5

100 ± 2

7.5

100 ± 1

9.5

100 ± 4

Methanolic extract

0.5

60.7 ± 4.3

1.65*

0.39*

2.5

97.8 ± 3

4.5

99 ± 4

7.5

100 ± 2

9.5

100 ± 1

Trolox^c

0.5

22 ± 1

1

0.76

0.625

32 ± 1

0.833

53.8 ± 2.5

1.25

65 ± 2

2.5

96.8 ± 2.5