Compound No
Absorbance of samples (λ)
% inhibition
Control of ABTS
a
0.474
0%
Ascorbic acid
0.048
89.87%
8a
0.466
6.23%
8b
0.050
89.93%
8c
0.358
27.96%
8d
0.418
15.89%
8e
0.370
25.55%
9a
0.020
95.97%
9b
0.102
79.47%
11
0.183
63.17%
12
0.171
65.59%
a
ABTS: The method used for antioxidant activity
(%) Inhibition = [A (control) - A (test) /A (control)] x 100
Table 1:
ABTS Antioxidant activity assay of compounds 8a-e, 9a,b, 11 and 12.