| Plant Species | 10% Acetic Acid | Hexan | Ethyl Acetate | Ethanol | |
| RP-HPLC-bound | RP-HPLC-unbound | ||||
| C. album | 0 | 0 | <4 | <6 | 0 |
| P. major | 0 | 20 ± 4 | <10 | 22 ± 2 | 0 |
| E. elongata | 0 | 18 ± 3 | 0 | 0 | 0 |
| F. ulmaria | 0 | 22 ± 2 | 22 ± 1 | 20 ± 2 | 0 |
| N. sativa | 0 | 0 | 0 | 0 | 0 |