Table 3.
Box–Behnken design: real variables and experimental responses (chemical parameters)
| Exp. no. | Coded variables | Experimental responses | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| x 1 | x 2 | x 3 | Protein (mg/g) | Polyphenol (mg GAE/g) | TSS (°B) | Total solid (%) | |||||
| Act | Pre | Act | Pre | Act | Pre | Act | Pre | ||||
| 1 | −1 | −1 | 0 | 368.02 | 375.47 | 111.34 | 110.08 | 13.00 | 13.02 | 15.64 | 15.59 |
| 2 | 1 | −1 | 0 | 139.40 | 142.25 | 130.58 | 128.68 | 13.20 | 13.23 | 15.96 | 15.44 |
| 3 | −1 | 1 | 0 | 394.99 | 392.14 | 119.25 | 121.14 | 13.30 | 13.17 | 15.42 | 15.45 |
| 4 | 1 | 1 | 0 | 179.19 | 171.74 | 121.92 | 123.18 | 13.10 | 13.17 | 15.64 | 15.69 |
| 5 | −1 | 0 | −1 | 409.30 | 403.89 | 113.81 | 111.68 | 13.20 | 13.15 | 14.66 | 14.65 |
| 6 | 1 | 0 | −1 | 127.70 | 126.89 | 118.31 | 116.82 | 13.00 | 12.98 | 14.51 | 14.47 |
| 7 | −1 | 0 | 1 | 356.16 | 356.97 | 116.02 | 117.52 | 13.00 | 13.03 | 14.63 | 14.68 |
| 8 | 1 | 0 | 1 | 174.94 | 180.35 | 130.88 | 133.01 | 13.40 | 13.43 | 14.93 | 14.98 |
| 9 | 0 | −1 | −1 | 159.09 | 157.05 | 99.44 | 102.83 | 12.40 | 12.40 | 13.99 | 14.07 |
| 10 | 0 | 1 | −1 | 166.59 | 174.84 | 112.90 | 113.13 | 12.60 | 12.65 | 14.11 | 14.10 |
| 11 | 0 | −1 | 1 | 163.29 | 155.03 | 121.60 | 121.37 | 12.80 | 12.75 | 14.29 | 14.30 |
| 12 | 0 | 1 | 1 | 181.37 | 183.41 | 120.02 | 116.63 | 12.60 | 12.60 | 14.45 | 14.37 |
| 13 | 0 | 0 | 0 | 108.18 | 106.12 | 121.47 | 118.19 | 12.40 | 12.46 | 14.05 | 14.29 |
| 14 | 0 | 0 | 0 | 105.31 | 106.12 | 118.35 | 118.19 | 12.30 | 12.46 | 14.03 | 14.29 |
| 15 | 0 | 0 | 0 | 107.81 | 106.12 | 117.29 | 118.19 | 12.60 | 12.46 | 14.58 | 14.29 |
| 16 | 0 | 0 | 0 | 104.30 | 106.12 | 116.47 | 118.19 | 12.60 | 12.46 | 14.55 | 14.29 |
| 17 | 0 | 0 | 0 | 104.99 | 106.12 | 117.38 | 118.19 | 12.40 | 12.46 | 14.23 | 14.29 |