Table 2.
Eight-trial of Plackett–Burman experimental design used for evaluation of seven independent variables along with the endophytic S. coelicolor strain E72 biomass production.
| Trail | Variables (g/l) | Biomass g/l | Predicted Biomass g/l | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Sucrose | (NH4)2SO4 | NaNO3 | KCl | K2HPO4 | MgSO4·7H2O | FeSO47H2O | |||
| 1 | 40 | 0 | 0 | 2 | 1 | 1 | 0.5 | 4.562 | 4.623 |
| 2 | 40 | 4 | 0 | 0.5 | 3 | 0.5 | 0.5 | 11.046 | 11.053 |
| 3 | 40 | 4 | 2 | 0.5 | 1 | 1 | 0.01 | 6.564 | 6.623 |
| 4 | 15 | 4 | 2 | 2 | 1 | 0.5 | 0.5 | 3.765 | 3.823 |
| 5 | 40 | 0 | 2 | 2 | 3 | 0.5 | 0.01 | 8.758 | 8.823 |
| 6 | 15 | 4 | 0 | 2 | 3 | 1 | 0.01 | 8.451 | 8.523 |
| 7 | 15 | 0 | 2 | 0.5 | 3 | 1 | 0.5 | 4.463 | 4.523 |
| 8 | 15 | 0 | 0 | 0.5 | 1 | 0.5 | 0.01 | 3.465 | 3.523 |