Chromium | Tannic acid | |||||||
---|---|---|---|---|---|---|---|---|
Variable | Stdized effect | % contribution | Coefficient estimate | P value | Stdized effect | % contribution | Coefficient estimate | P value |
pH | 6.06 | 4.53 | 3.03 | 0.0089 | 7.47 | 2.23 | 3.73 | 0.4348 |
Temperature | 2.88 | 1.02 | 1.44 | 0.0187 | 8.32 | 2.77 | 4.16 | 0.4016 |
Incubation period | 1.12 | 0.16 | 0.56 | 0.0479 | − 17.63 | 12.45 | − 8.81 | 0.2112 |
Agitation speed | − 6.14 | 4.66 | − 3.07 | 0.0088 | − 6.20 | 1.54 | − 3.10 | 0.4935 |
Inoculum size | 1.49 | 0.27 | 0.74 | 0.0361 | 8.28 | 2.75 | 4.14 | 0.4028 |
Cr concentration | 12.49 | 19.27 | 6.25 | 0.0043 | 28.58 | 32.70 | 14.29 | 0.0333 |
TA concentration | 8.85 | 9.68 | 4.43 | 0.0061 | 30.98 | 38.44 | 15.49 | 0.0232 |
Glucose | 16.96 | 35.51 | 8.48 | 0.0032 | 8.87 | 13.15 | 4.44 | 0.0421 |
NH4Cl | 12.79 | 20.19 | 6.39 | 0.0042 | 1.82 | 0.13 | 0.91 | 0.0151 |
MgSO4 | 3.89 | 1.87 | 1.95 | 0.0138 | 3.37 | 0.46 | 1.69 | 0.6774 |
K2HPO4 | 4.80 | 2.84 | 2.40 | 0.0112 | 6.91 | 1.91 | 3.45 | 0.4593 |