Table 3.
Factors and levels of the OAD.
| Factor/Level | A | B | C | D |
|---|---|---|---|---|
| Concentration of Vitexin Solution (mg/mL) | Antisolvent to Solvent Volume Ratio | Stirring Speed (rpm) | Precipitation Temperature (°C) | |
| 1 | 25 | 5 | 500 | 4 |
| 2 | 35 | 15 | 1000 | 25 |
| 3 | 45 | 25 | 1500 | 35 |
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