Table 2.
Alkaloid content in P. amalago L. samples, expressed in mg of alkaloid/g of extract (w/w), and in mg of alkaloid/g of dried plant (w/w).
| Extraction Method | mg of alkaloid/g of extract (w/w) | mg of alkaloid/g dried plant (w/w) |
|---|---|---|
| mean ± SD (n = 3) | mean ± SD (n = 3) | |
| SFE-CO2 | 600.53 ± 21.08 | 5.11 ± 0.18 b |
| 313 K and, 12.55 MPa | ||
| SFE-CO2 | 454.63 ± 18.93 | 4.70 ± 0.19 b |
| 333 K and, 20.5 MPa | ||
| Compressed propane | 296.06 ± 11.23 a | 1.40 ± 0.05 c |
| 293 K and, 15.0 MPa | ||
| Compressed propane | 345.56 ± 10.45 | 2.20 ± 0.06 |
| 313 K and, 15.0 MPa | ||
| Compressed propane | 209.60 ± 4.55 | 1.51 ± 0.03 c |
| 333 K and, 15.0 MPa | ||
| Maceration with chloroform | 306.83 ± 5.82 a | 12.96 ± 0.24 |
SD = standard deviation; Means followed by same lowercase letters did not differ statistically (Tukey test, p > 0.05); w/w = weight/weight.