Table 2.
IC50 values obtained for alkaloid standards and plant extracts (concentration of acetylcholinesterase 0.2 U/mL).
| Alkaloid | Concentration of Acetylcholinesterase 0.2 U/mL | |
|---|---|---|
| IC50 (µg/mL) | IC50 (µM) | |
| Berberine | 0.36 (±0.03) | 1.06 |
| Chelerythrie | 0.25 (±0.02) | 0.72 |
| Chelidonine | 9.53 (±0.43) | 26.97 |
| Protopine | 23.13 (±0.91) | 69.81 |
| Sanguinarie | 1.85 (±0.12) | 5.57 |
| Sanguinaria canadensis Extracts | ||
| Before flowering | 89.14 (±4.03) | - |
| During flowering | 61.24 (±3.12) | - |
| After flowering | 64.12 (±3.34) | - |
-: the value cannot be calculated for extract.