Table 2 Response surface design results.
Run | Factor 1 | Factor 2 | Factor 3 | Response 1 |
|---|---|---|---|---|
A: Ethanol concentration (%) | B: Ultrasound time (min) | C: Material liquid ratio (g/mL) | Extraction rate of total saponins (%) | |
1 | 60 | 20 | 1:30 | 32 |
2 | 80 | 20 | 1:30 | 34.39 |
3 | 60 | 40 | 1:30 | 33.35 |
4 | 80 | 40 | 1:30 | 32.55 |
5 | 60 | 30 | 1:25 | 33.53 |
6 | 80 | 30 | 1:25 | 33.25 |
7 | 60 | 30 | 1:35 | 31.45 |
8 | 80 | 30 | 1:35 | 32.87 |
9 | 70 | 20 | 1:25 | 34.41 |
10 | 70 | 40 | 1:25 | 32.22 |
11 | 70 | 20 | 1:35 | 32.56 |
12 | 70 | 40 | 1:35 | 33.06 |
13 | 70 | 30 | 1:30 | 37.34 |
14 | 70 | 30 | 1:30 | 37.23 |
15 | 70 | 30 | 1:30 | 37.01 |
16 | 70 | 30 | 1:30 | 37.07 |
17 | 70 | 30 | 1:30 | 36.67 |
