Table 3.
Phenolic acid content of the methanolic extract from the aerial parts of S. bicolor.
| Peak | Rt (min) | Concentration (mg/g dry sample) | Compound name |
|---|---|---|---|
| 1 | 2.3 | 68.26 ± 1.03 | Gallic acid |
| 2 | 2.8 | 25.44 ± 0.78 | Sinapic acid |
| 3 | 4.8 | 3.48 ± 0.83 | Caffeic acid |
| 4 | 6.3 | 0.72 ± 1.02 | Ferulic acid |
| 5 | 8.1 | 0.42 ± 1.65 | o-Coumaric acid |
| 6 | 9.3 | 0.78 ± 0.45 | trans-Cinnamic acid |
| 7 | 10.8 | 70.27 ± 0.74 | p-Coumaric acid |
| 8 | 11.9 | 75.22 ± 1.41 | Protocatchuic acid |
| 9 | 12.2 | 1.44 ± 1.85 | m-Coumaric acid |
| 10 | 13.5 | 0.53 ± 1.06 | Chlorogenic acid |
| 11 | 15.7 | 0.50 ± 0.92 | Gentisic acid |
| 12 | 20.9 | 54.38 ± 1.26 | Syringic acid |
| 13 | 21.5 | 0.68 ± 1.73 | p-Hydroxybenzoic acid |
| 14 | 22.0 | 0.45 ± 0.65 | Salicylic acid |
Notes: Values are the mean ± SD (n = 3).