Table A1.
The Box–Behnken design and the results of the response surface methodology.
| Runs | Factors | Response Value | ||
|---|---|---|---|---|
| A: Extraction Temperature (°C) | B: Ethanol Content (%) | C: Solid–Liquid Ratio (g/mL) | Anthocyanin Yield (mg/g) | |
| 1 | 20 | 60 | 1:5 | 1.6745 ± 0.0110 |
| 2 | 20 | 60 | 1:5 | 1.5615 ± 0.0131 |
| 3 | 30 | 50 | 1:5 | 1.5955 ± 0.0024 |
| 4 | 20 | 50 | 1:4 | 1.4948 ± 0.0173 |
| 5 | 20 | 60 | 1:5 | 1.5875 ± 0.0001 |
| 6 | 10 | 70 | 1:5 | 1.8895 ± 0.0278 |
| 7 | 20 | 70 | 1:4 | 1.9220 ± 0.0110 |
| 8 | 10 | 60 | 1:6 | 2.1174 ± 0.0250 |
| 9 | 30 | 60 | 1:6 | 1.9956 ± 0.0146 |
| 10 | 30 | 60 | 1:4 | 1.9424 ± 0.0049 |
| 11 | 20 | 60 | 1:5 | 1.7305 ± 0.0062 |
| 12 | 10 | 60 | 1:4 | 1.6512 ± 0.0092 |
| 13 | 30 | 70 | 1:5 | 1.9535 ± 0.0089 |
| 14 | 20 | 50 | 1:6 | 1.7466 ± 0.0045 |
| 15 | 20 | 60 | 1:5 | 1.5155 ± 0.0027 |
| 16 | 20 | 70 | 1:6 | 2.1264 ± 0.0026 |
| 17 | 10 | 50 | 1:5 | 1.4695 ± 0.0089 |
Note: Each experiment was repeated thrice, and the experimental results are presented as mean ± SD.