Table 2.
Coded and experimental levels of the ultrasound-assisted extraction (UAE) operational parameters and experimental values for 27 experimental runs.
| Run No. | X1 | X2 | X3 | X4 | TPC (mg GAE/g) |
AA (%) |
|---|---|---|---|---|---|---|
| 1 | 60 (−1) | 40.0 (−1) | 30 (−1) | 400 (−1) | 5.07 | 22.7 |
| 2 | 80 (+1) | 40.0 (−1) | 30 (−1) | 400 (−1) | 6.66 | 59.8 |
| 3 | 60 (−1) | 76.5 (+1) | 30 (−1) | 400 (−1) | 6.47 | 53.5 |
| 4 | 80 (+1) | 76.5 (+1) | 30 (−1) | 400 (−1) | 7.21 | 60.6 |
| 5 | 60 (−1) | 40.0 (−1) | 30 (−1) | 400 (−1) | 6.28 | 51.6 |
| 6 | 80 (+1) | 40.0 (−1) | 30 (−1) | 400 (−1) | 7.78 | 45.0 |
| 7 | 60 (−1) | 76.5 (+1) | 60 (+1) | 400 (−1) | 6.51 | 54.1 |
| 8 | 80 (+1) | 76.5 (+1) | 60 (+1) | 600 (+1) | 6.05 | 72.3 |
| 9 | 60 (−1) | 40.0 (−1) | 60 (+1) | 600 (+1) | 5.72 | 42.4 |
| 10 | 80 (+1) | 40.0 (−1) | 30 (−1) | 600 (+1) | 7.64 | 65.0 |
| 11 | 60 (−1) | 76.5 (+1) | 30 (−1) | 600 (+1) | 6.88 | 57.0 |
| 12 | 80 (+1) | 76.5 (+1) | 30 (−1) | 600 (+1) | 7.48 | 58.9 |
| 13 | 60 (−1) | 40.0 (−1) | 30 (−1) | 600 (+1) | 7.40 | 63.1 |
| 14 | 80 (+1) | 40.0 (−1) | 30 (−1) | 600 (+1) | 9.06 | 84.8 |
| 15 | 60 (−1) | 76.5 (+1) | 60 (+1) | 600 (+1) | 8.33 | 72.5 |
| 16 | 80 (+1) | 76.5 (+1) | 60 (+1) | 500 (0) | 9.41 | 72.3 |
| 17 | 50 (−2) | 58.3 (0) | 45 (0) | 500 (0) | 5.39 | 24.7 |
| 18 | 90(+2) | 58.3 (0) | 45 (0) | 500 (0) | 9.23 | 64.1 |
| 19 | 70 (0) | 21.8 (−2) | 45 (0) | 500 (0) | 5.10 | 48.7 |
| 20 | 70 (0) | 94.8 (+2) | 45 (0) | 500 (0) | 6.50 | 54.1 |
| 21 | 70 (0) | 58.3 (0) | 15 (−2) | 500 (0) | 5.26 | 25.2 |
| 22 | 70 (0) | 58.3 (0) | 75 (+2) | 500 (0) | 8.68 | 70.6 |
| 23 | 70 (0) | 58.3 (0) | 45 (0) | 300 (−2) | 8.68 | 70.6 |
| 24 | 70 (0) | 58.3 (0) | 45 (0) | 700 (+2) | 8.24 | 72.5 |
| 25 | 70 (0) | 58.3 (0) | 45 (0) | 500 (0) | 8.77 | 77.3 |
| 26 | 70 (0) | 58.3 (0) | 45 (0) | 500 (0) | 8.72 | 79.2 |
| 27 | 70 (0) | 58.3 (0) | 45 (0) | 500 (0) | 8.63 | 81.6 |
X1: Temperature; X2: Ethanol concentration; X3: Extraction time; X4: Ultrasonic power.