Table 4 Optimization of five nutrient variables (X1-X5) and two operating conditions (A, B) using Taugchi’s experimental design for the production of dry cell mass
Runs order | Nutrient variables (g/l) and operating conditions levels a | Response Dry cell mass (g/l) | ||||||
|---|---|---|---|---|---|---|---|---|
X1 | X 2 | X3 | X4 | X5 | A | B | ||
1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 8.99 ± 0.02 |
2 | 3 | 1 | 3 | 4 | 2 | 2 | 1 | 9.12 ± 0.06 |
3 | 2 | 3 | 4 | 1 | 2 | 3 | 1 | 10.22 ± 0.04 |
4 | 4 | 1 | 4 | 2 | 3 | 4 | 1 | 13.47 ± 0.12 |
5 | 4 | 4 | 1 | 3 | 2 | 1 | 2 | 13.01 ± 0.01 |
6 | 3 | 2 | 2 | 3 | 1 | 2 | 2 | 8.21 ± 0.07 |
7 | 4 | 4 | 2 | 1 | 4 | 3 | 2 | 13.55 ± 0.01 |
8 | 2 | 1 | 3 | 3 | 4 | 4 | 2 | 11.32 ± 0.05 |
9 | 1 | 3 | 3 | 3 | 3 | 2 | 3 | 10.91 ± 0.05 |
10 | 2 | 2 | 4 | 4 | 3 | 2 | 3 | 11.21 ± 0.07 |
11 | 2 | 4 | 2 | 2 | 1 | 2 | 3 | 12.87 ± 0.06 |
12 | 1 | 4 | 2 | 4 | 4 | 2 | 3 | 12.71 ± 0.06 |
13 | 1 | 4 | 1 | 1 | 3 | 3 | 1 | 11.82 ± 0.02 |
14 | 4 | 3 | 1 | 4 | 3 | 3 | 3 | 13.88 ± 0.03 |
15 | 3 | 3 | 3 | 2 | 4 | 4 | 3 | 11.49 ± 0.08 |
16 | 1 | 1 | 2 | 1 | 1 | 3 | 4 | 8.21 ± 0.05 |