Table 2.

The percentage inhibition of the ABTS radical cation by L-ascorbic acid and the tested compounds.

Compound no	Absorbance	%Inhibition
Control of ABTS	0.512	0
Ascorbic acid	0.051	90.0
4a	0.245	52.0
4b	0.243	52.6
5a	0.281	45.0
5b	0.249	51.4
5c	0.251	51.0
6a	0.234	54.3
6b	0.229	55.1
7	0.124	75.8
8a	0.240	53.0
8b	0.058	88.5
9	0.204	60.0
10	0.270	47.3
11	0.279	45.5
12a	0.275	46.3
12b	0.256	50.0