Table 3 The Plackett–Burman design variables (in coded levels) with (3R)-AC as response
From: Metabolic engineering of Serratia marcescens MG1 for enhanced production of (3R)-acetoin
Run | Variable levels | (3R)-AC (g/l) | ||||||
|---|---|---|---|---|---|---|---|---|
X 1 | X 2 | X 3 | X 4 | X 5 | X 6 | X 7 | ||
1 | −1 | −1 | 1 | 1 | 1 | −1 | 1 | 20.68 |
2 | −1 | −1 | −1 | 1 | 1 | 1 | −1 | 20.67 |
3 | −1 | 1 | −1 | −1 | −1 | 1 | 1 | 19.78 |
4 | 1 | −1 | 1 | 1 | −1 | 1 | −1 | 26.76 |
5 | 1 | −1 | −1 | −1 | 1 | 1 | 1 | 27.78 |
6 | 1 | −1 | 1 | −1 | −1 | −1 | 1 | 27.69 |
7 | 1 | 1 | −1 | 1 | 1 | −1 | 1 | 26.66 |
8 | 1 | 1 | −1 | 1 | −1 | −1 | −1 | 26.80 |
9 | −1 | 1 | 1 | −1 | 1 | −1 | −1 | 23.81 |
10 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | 22.84 |
11 | 1 | 1 | 1 | −1 | 1 | 1 | −1 | 32.31 |
12 | −1 | 1 | 1 | 1 | −1 | 1 | 1 | 20.50 |