Table 1 Independent variables and levels of experimental design
From: Optimization of inulin production process parameters using response surface methodology
S. no. | Independent variables | Code level | ||
|---|---|---|---|---|
Low (− 1) | Mid (0) | High (+ 1) | ||
1. | Heating temperature °C (A) | 115 | 120 | 125 |
2. | Creep speed rpm (B) | 20 | 22 | 24 |
3. | Pressure MPa (C) | 0.02 | 0.03 | 0.04 |