Table 1.
Plackett-Burman design in coded units and real values (in parenthesis) in g/L for seven variables along with the cellulase activity.
| Run Order |
CMC (X1) | Peptone (X2) | YE (X3) | K2HPO4 (X4) | MgSO4·7H2O (X5) | FeSO4·7H2O (X6) | MnCl2·4H2O (X7) | E.A (U/mL) |
|---|---|---|---|---|---|---|---|---|
| (1) | +1 (18) | −1 (2) | −1 (1) | −1 (0.5) | −1 (0.05) | +1 (0.45) | −1 (0.01) | 0.084 |
| (2) | −1 (2) | −1 (2) | −1 (1) | −1 (0.5) | +1 (0.45) | −1 (0.05) | +1 (0.1) | 0.003 |
| (3) | −1 (2) | +1 (8) | +1 (9) | +1 (2) | +1 (0.45) | −1 (0.05) | −1 (0.01) | 0.080 |
| (4) | +1 (18) | −1 (2) | +1 (9) | +1 (2) | −1 (0.05) | −1 (0.05) | −1 (0.01) | 0.226 |
| (5) | −1 (2) | −1 (2) | −1 (1) | +1 (2) | −1 (0.05) | +1 (0.45) | −1 (0.01) | 0.004 |
| (6) | +1 (18) | +1 (8) | +1 (9) | +1 (2) | −1 (0.05) | −1 (0.05) | +1 (0.1) | 0.252 |
| (7) | +1 (18) | +1 (8) | −1 (1) | +1 (2) | +1 (0.45) | −1 (0.05) | −1 (0.01) | 0.221 |
| (8) | −1 (2) | +1 (8) | +1 (9) | −1 (0.5) | +1 (0.45) | +1 (0.45) | −1 (0.01) | 0.026 |
| (9) | +1 (18) | −1 (2) | +1 (9) | +1 (2) | +1 (0.45) | +1 (0.45) | −1 (0.01) | 0.205 |
| (10) | −1 (2) | −1 (2) | −1 (1) | −1 (0.5) | −1 (0.05) | −1 (0.05) | −1 (0.01) | 0.006 |
| (11) | −1 (2) | +1 (8) | +1 (9) | −1 (0.5) | −1 (0.05) | −1 (0.05) | −1 (0.01) | 0.049 |
| (12) | +1 (18) | +1 (8) | −1 (1) | −1 (0.5) | +1 (0.45) | +1 (0.45) | −1 (0.01) | 0.168 |
| (13) | +1 (18) | −1 (2) | −1 (1) | +1 (2) | +1 (0.45) | −1 (0.05) | +1 (0.1) | 0.102 |
| (14) | +1 (18) | −1 (2) | +1 (9) | −1 (0.5) | +1 (0.45) | +1 (0.45) | +1 (0.1) | 0.197 |
| (15) | −1 (2) | −1 (2) | +1 (9) | −1 (0.5) | +1 (0.45) | −1 (0.05) | +1 (0.1) | 0.024 |
| (16) | −1 (2) | +1 (8) | −1 (1) | +1 (2) | +1 (0.45) | +1 (0.45) | +1 (0.1) | 0.003 |
| (17) | +1 (18) | +1 (8) | −1 (1) | −1 (0.5) | −1 (0.05) | −1 (0.05) | +1 (0.1) | 0.214 |
| (18) | +1 (18) | +1 (8) | +1 (9) | −1 (0.5) | −1 (0.05) | +1 (0.45) | +1 (0.1) | 0.249 |
| (19) | −1 (2) | +1 (8) | −1 (1) | +1 (2) | −1 (0.05) | +1 (0.45) | +1 (0.1) | 0.025 |
| (20) | −1 (2) | −1 (2) | +1 (9) | +1 (2) | −1 (0.05) | +1 (0.45) | +1 (0.1) | 0.022 |