Table 5 The ANOVA result of the response surface quadratic model.
Source | Sum of Squares | Df | Mean Square | F-Value | P- Value | |
|---|---|---|---|---|---|---|
Model | 17381.81 | 9 | 1931.31 | 219.70 | < 0.0001 | Significant |
A- Temperature | 108.56 | 1 | 108.56 | 12.35 | 0.0056 | |
B- pH | 1562.58 | 1 | 1562.58 | 177.75 | < 0.0001 | |
C-Concentration | 11140.20 | 1 | 11140.20 | 1267.26 | < 0.0001 | |
AB | 107.53 | 1 | 107.53 | 12.23 | 0.0058 | |
AC | 96.67 | 1 | 96.67 | 11.00 | 0.0078 | |
BC | 239.04 | 1 | 239.04 | 27.19 | 0.0004 | |
A2 | 1837.21 | 1 | 1837.21 | 208.99 | < 0.0001 | |
B2 | 674.87 | 1 | 674.87 | 76.77 | < 0.0001 | |
C2 | 2344.42 | 1 | 2344.42 | 266.69 | < 0.0001 | |
Residual | 87.91 | 10 | 8.79 | |||
Lack of Fit | 52.24 | 5 | 10.45 | 1.46 | 0.3429 | Not significant |
Pure-error | 35.67 | 5 | 7.13 | |||
Cor Total | 17469.72 | 19 |
