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Statistical analysis of the Plackett–Burman experimental result for B. cereus N1.
| Mannanase activity |
||||
|---|---|---|---|---|
| Factors | Main effect | t-value | P-value | Significance level |
| MgSO4.7H2O | 3.95 | 0.468 | 0.66 | – |
| K2HPO4 | 3.95 | 0.468 | 0.65 | – |
| NaCl | −3.95 | −0.468 | 0.65 | – |
| Yeast extract | 1.45 | 0.16 | 0.87 | – |
| Peptone | −1.95 | −0.228 | 0.83 | – |
| Inoculum size | 8.05 | 1.01 | 0.35 | – |
| Glucose | 18.05 | 4.1 | 0.0093 | 99% |
