Table 2 Experimental results of response surface.
Runs | A | B | C | D | Y |
|---|---|---|---|---|---|
Solid-to-liquid ratio/g/mL | Extraction time/min | Extraction temperature/℃ | Ethanol volume fraction/% | Total flavonoid yield/% | |
1 | 1 | -1 | 0 | 0 | 5.64 |
2 | 0 | 0 | − 1 | 1 | 4.58 |
3 | 1 | 1 | 0 | 0 | 4.81 |
4 | 0 | 0 | 0 | 0 | 5.56 |
5 | 0 | 0 | 1 | − 1 | 4.67 |
6 | − 1 | 0 | 1 | 0 | 4.81 |
7 | 1 | 0 | − 1 | 0 | 4.45 |
8 | 0 | 1 | 0 | 1 | 4.21 |
9 | − 1 | -1 | 0 | 0 | 4.49 |
10 | 0 | -1 | 0 | − 1 | 4.39 |
11 | − 1 | 1 | 0 | 0 | 4.35 |
12 | 0 | -1 | − 1 | 0 | 4.56 |
13 | 0 | -1 | 0 | 1 | 4.91 |
14 | 0 | 1 | -1 | 0 | 4.57 |
15 | 0 | 1 | 1 | 0 | 4.89 |
16 | 0 | 0 | 1 | 1 | 5.21 |
17 | 1 | 0 | 0 | 1 | 5.23 |
18 | 0 | -1 | 1 | 0 | 5.44 |
19 | 0 | 0 | 0 | 0 | 5.78 |
20 | 0 | 0 | -1 | − 1 | 3.91 |
21 | 0 | 1 | 0 | − 1 | 4.83 |
22 | 1 | 0 | 0 | − 1 | 4.93 |
23 | − 1 | 0 | -1 | 0 | 3.93 |
24 | − 1 | 0 | 0 | − 1 | 4.04 |
25 | − 1 | 0 | 0 | 1 | 4.87 |
26 | 0 | 0 | 0 | 0 | 5.36 |
27 | 0 | 0 | 0 | 0 | 5.41 |
28 | 0 | 0 | 0 | 0 | 5.51 |
29 | 1 | 0 | 1 | 0 | 5.23 |
