Table 5.
Experimental results of the orthogonal test for removing impurity by HPD-100 resins.
| Trial No. | A (Ethanol Concentration) | B (Solvent Volume) | C (Flow Rate) | Contents of 7 Main Flavonoids/% |
|---|---|---|---|---|
| 1 | 10% | 2 BV | 20 mL/(cm2·h) | 22.44 |
| 2 | 20% | 2 BV | 40 mL/(cm2·h) | 29.77 |
| 3 | 30% | 2 BV | 60 mL/(cm2·h) | 40.61 |
| 4 | 10% | 3 BV | 40 mL/(cm2·h) | 27.81 |
| 5 | 20% | 3 BV | 60 mL/(cm2·h) | 33.91 |
| 6 | 30% | 3 BV | 20 mL/(cm2·h) | 44.06 |
| 7 | 10% | 4 BV | 60 mL/(cm2·h) | 27.70 |
| 8 | 20% | 4 BV | 20 mL/(cm2·h) | 34.14 |
| 9 | 30% | 4 BV | 40 mL/(cm2·h) | 44.20 |
| k1 | 25.98 | 30.94 | 33.55 | |
| k2 | 32.61 | 35.26 | 33.93 | |
| k3 | 42.96 | 35.35 | 34.07 | |
| R | 16.97 | 4.40 | 0.53 |
Note: ki is the mean contents of seven main flavonoids with the corresponding level of each factor, R is the range of ki of each factor.