Table 2.
The results of orthogonal optimization experiment in extraction process of total alkaloid.
| Number | Factors |
|||
|---|---|---|---|---|
| A: Temperature （°C） |
B: Material-liquid ratio （g/mL） | C: HCl concentration (%) | Total alkaloid content (mg/mL) | |
| 1 | 1 (75 °C) | 1 (1:55) | 1（0.5 %） | 0.2744 |
| 2 | 1 | 2 (1:60) | 2（0.6 %） | 0.2330 |
| 3 | 1 | 3 (1:65) | 3（0.7 %） | 0.2376 |
| 4 | 2 (80 °C) | 1 | 2 | 0.2326 |
| 5 | 2 | 2 | 3 | 0.2378 |
| 6 | 2 | 3 | 1 | 0.2768 |
| 7 | 3 (85 °C) | 1 | 3 | 0.2367 |
| 8 | 3 | 2 | 1 | 0.2035 |
| 9 | 3 | 3 | 2 | 0.2761 |
| K1 | 0.2433 | 0.2479 | 0.2527 | |
| K2 | 0.2491 | 0.2248 | 0.2472 | |
| K3 | 0.2388 | 0.2600 | 0.2354 | |
| R | 0.0103 | 0.0352 | 0.0172 | |