Table 7: Antioxidant effects of the compounds isolated from the P. vulgaris L. on inhibition of the ABTS•+.

CompoundsConcentration ( 𝜇 g/mL)Inhibition (%) I C 5 0 ( 𝜇 M)

16.6799.44 ± 0.20
Troloxa3.3345.48 ± 1.2015.34 ± 0.40
1.6721.76 ± 1.15

3.3375.14 ± 1.08
11.6734.65 ± 1.0312.03 ± 0.24
0.3311.33 ± 0.31

3.3393.42 ± 0.58
21.6753.79 ± 0.9211.59 ± 0.22
0.3314.90 ± 0.34

8.3374.05 ± 0.69
33.3359.65 ± 1.395.94 ± 1.01
1.6747.60 ± 1.35

3.3378.40 ± 1.17
41.6736.50 ± 0.788.79 ± 0.10
0.339.93 ± 0.27

3.3384.68 ± 1.41
51.6750.17 ± 1.7510.52 ± 0.28
0.3313.00 ± 0.13

3.3392.80 ± 1.50
61.6752.73 ± 0.9312.39 ± 0.33
0.3313.73 ± 0.37

Inhibition rate was calculated as percentage with respect to the control value. The IC50 values of each sample were estimated from the least-squares regression line of the logarithmic concentration plotted against inhibitory activity. aTrolox was used as positive control. Inhibitory effect was expressed as mean ± SD of triplicate experiments.