Table 2 ABTS and DPPH scavenging activity of P. americana extracts.

41.01 ± 0.1^a

7.86 ± 0.04^b

7.03 ± 1.51^c

6.62 ± 0.65^d

80.25 ± 1.14^a

12.34 ± 0.45^b

13.60 ± 0.31^b

10.12 ± 0.45^c

90.53 ± 0.45^a

19.67 ± 0.50^b

36.98 ± 0.85^c

13.30 ± 0.14^d

93.39 ± 0.16^a

24.05 ± 0.44^b

43.44 ± 0.44^c

22.25 ± 0.42^b

99.04 ± 0.11^a

28.16 ± 0.49^b

65.30 ± 0.22^c

30.58 ± 0.48^b

32.78 ± 0.35^a

0.64 ± 0.13^b

1.21 ± 0.70^c

1.95 ± 0.44^d

48.17 ± 0.24^a

3.56 ± 1.32^b

2.63 ± 0.83^c

2.39 ± 0.73^c

60.46 ± 0.01^a

4.39 ± 1.22^b

3.09 ± 0.66^c

2.73 ± 0.75^c

78.04 ± 0.05^a

8.90 ± 0.82^b

7.77 ± 0.65^b

4.94 ± 1.32^c

90.42 ± 0.12^a

14.58 ± 1.96^b

19.34 ± 4.41^c

11.28 ± 2.19^d