Table 8.
ANOVA for response surface quadratic model (Box-Behnken for yeast biomass response).
| Source | Sum of squares | df | Mean Square | f -value |
p
-value
(Prob ˃ F) |
|---|---|---|---|---|---|
| Model | 39.43 | 14 | 2.82 | 31.41 | ˂0.0001 |
| D- Glucose | 14.74 | 1 | 14.74 | 164.38 | ˂0.0001 |
| F- Aeration | 21.28 | 1 | 21.28 | 237.30 | ˂0.0001 |
| A- Selenium | 0.072 | 1 | 0.072 | 0.80 | 0.3851 |
| B- Temperature | 0.22 | 1 | 0.22 | 2.41 | 0.1430 |
| DF | 1.60 E-003 | 1 | 1.60 E-003 | 0.018 | 0.8956 |
| DA | 0.20 | 1 | 0.20 | 2.21 | 0.1594 |
| DB | 0.26 | 1 | 0.26 | 2.84 | 0.1139 |
| FA | 9.03 E-003 | 1 | 9.03 E-003 | 0.10 | 0.7557 |
| FB | 2.03 E-003 | 1 | 2.03 E-003 | 0.023 | 0.8827 |
| AB | 0.011 | 1 | 0.011 | 0.12 | 0.7311 |
| D2 | 2.62 | 1 | 2.62 | 29.22 | ˂0.0001 |
| F2 | 5.03 | 1 | 5.03 | 8.34 | ˂0.0001 |
| A2 | 0.071 | 1 | 0.071 | 0.79 | 0.3899 |
| B2 | 0.055 | 1 | 0.055 | 0.61 | 0.4478 |
| Residual | 1.26 | 14 | 0.090 | ||
| Lack of Fit | 1.18 | 10 | 0.12 | 6.70 | 0.059 |
| Pure Error | 0.071 | 4 | 0.018 | ||
| Cor Total | 40.68 | 28 |