Table 1.
Box–Benhnken design and results of AAP extraction experiments.
| No. | Codded Variables | Extraction Yield of AAP (mg/g) |
|||
|---|---|---|---|---|---|
|
X1 (Extraction Temperature, °C) |
X2 (Extraction Time, min) |
X3 (Liquid-solid Ratio, ml/g) |
X4 (Ultrasonic Power, W) |
||
| 1 | 0 | 0 | −1 | −1 | 9.23 |
| 2 | 0 | 0 | 1 | −1 | 13.02 |
| 3 | 1 | 0 | −1 | 0 | 11.79 |
| 4 | 0 | 0 | 0 | 0 | 15.39 |
| 5 | −1 | −1 | 0 | 0 | 9.59 |
| 6 | 0 | −1 | 0 | 1 | 12.67 |
| 7 | 0 | 1 | 0 | −1 | 12.34 |
| 8 | −1 | 0 | −1 | 0 | 9.32 |
| 9 | 0 | 0 | 0 | 0 | 15.02 |
| 10 | 0 | 0 | 0 | 0 | 16.17 |
| 11 | 0 | 1 | 0 | 1 | 10.69 |
| 12 | 1 | 0 | 1 | 0 | 11.09 |
| 13 | −1 | 0 | 1 | 0 | 11.19 |
| 14 | 1 | 1 | 0 | 0 | 11.32 |
| 15 | 0 | −1 | 0 | −1 | 9.57 |
| 16 | −1 | 1 | 0 | 0 | 11.97 |
| 17 | 0 | −1 | 1 | 0 | 11.76 |
| 18 | −1 | 0 | 0 | −1 | 9.95 |
| 19 | 0 | 0 | 1 | 1 | 10.34 |
| 20 | 0 | −1 | −1 | 0 | 9.04 |
| 21 | 0 | 1 | −1 | 0 | 11.98 |
| 22 | 1 | 0 | 0 | 1 | 10.26 |
| 23 | 0 | 0 | 0 | 0 | 15.13 |
| 24 | 1 | 0 | 0 | −1 | 11.57 |
| 25 | 0 | 0 | −1 | 1 | 12.34 |
| 26 | 0 | 1 | 1 | 0 | 11.07 |
| 27 | 0 | 0 | 0 | 0 | 15.9 |
| 28 | 1 | −1 | 0 | 0 | 12.41 |
| 29 | -1 | 0 | 0 | 1 | 11.59 |