Table 3.
Analysis of variance (ANOVA) for the quadratic model developed for synthesis of dilaurylazelate ester.
| Source | Sum of Squares | DF * | Mean Square | F-Value | p-Value Prob > F |
|---|---|---|---|---|---|
| Model | 688.58 | 12 | 57.38 | 51.37 | <0.0001 |
| A-Novozym 435 amount | 0.27 | 1 | 0.27 | 0.24 | 0.6308 |
| B-Reaction time | 351.47 | 1 | 351.47 | 314.67 | <0.0001 |
| C-Reaction temperature | 40.23 | 1 | 40.23 | 36.02 | <0.0001 |
| D-Molar ratio of substrates | 63.52 | 1 | 63.52 | 56.87 | <0.0001 |
| AB | 6.52 | 1 | 6.52 | 5.84 | 0.0272 |
| AC | 21.40 | 1 | 21.40 | 19.16 | 0.0004 |
| BC | 51.28 | 1 | 51.28 | 45.92 | <0.0001 |
| BD | 12.77 | 1 | 12.77 | 11.43 | 0.0035 |
| A2 | 84.45 | 1 | 84.45 | 75.60 | <0.0001 |
| B2 | 11.62 | 1 | 11.62 | 10.40 | 0.0050 |
| C2 | 14.91 | 1 | 14.91 | 13.35 | 0.0020 |
| D2 | 23.47 | 1 | 23.47 | 21.01 | 0.0003 |
| Residual | 18.99 | 17 | 1.12 | - | - |
| Lack of fit | 11.25 | 12 | 0.94 | 0.61 | 0.7794 |
| Pure error | 7.74 | 5 | 1.55 | - | - |
| Standard deviation | 1.06 | ||||
| PRESS | 54.47 | ||||
| R2 | 0.9732 | ||||
| Adjusted R2 | 0.9542 | ||||
| Predicted R2 | 0.9230 | ||||
| Coefficient of variation | 1.20 | ||||
| Adequate Precision | 24.973 |
* DF: Degree of Freedom.