Table 2.
Analysis of variance of a quadratic optimization model for EPS production by thermophilic B. haynesii CamB6.
| Source | Sum of Squares | Degree of Freedom | Mean Square | F-Value | p-Value (Prob > F) |
|---|---|---|---|---|---|
| Model | 70.99278 | 14 | 5.07091286 | 225.6301761 | <0.0001 *** |
| A-glucose | 4.3010667 | 1 | 4.30106667 | 191.3758837 | <0.0001 *** |
| B-yeast extract | 9.3250667 | 1 | 9.32506667 | 414.9186731 | <0.0001 *** |
| C-pH | 12.126817 | 1 | 12.1268167 | 539.5824888 | <0.0001 *** |
| D-inoculum size | 3.0104167 | 1 | 3.01041667 | 133.9484353 | <0.0001 *** |
| AB | 4.305625 | 1 | 4.305625 | 191.5787067 | <0.0001 *** |
| AC | 5.1984 | 1 | 5.1984 | 231.3027142 | <0.0001 *** |
| AD | 0.9216 | 1 | 0.9216 | 41.00657537 | <0.0001 *** |
| BC | 6.5536 | 1 | 6.5536 | 291.6023137 | <0.0001 *** |
| BD | 0.4356 | 1 | 0.4356 | 19.38201414 | 0.0005 ** |
| CD | 0.075625 | 1 | 0.075625 | 3.36493301 | 0.0865 ** |
| A^2 | 9.1806298 | 1 | 9.18062976 | 408.4919556 | <0.0001 *** |
| B^2 | 5.957344 | 1 | 5.95734405 | 265.0719159 | <0.0001 *** |
| C^2 | 14.260144 | 1 | 14.260144 | 634.5048521 | <0.0001 *** |
| D^2 | 0.0316298 | 1 | 0.03162976 | 1.407365685 | 0.2539 |
| Lack of Fit | 0.2910333 | 10 | 0.02910333 | 3.157685353 | 0.1081 |
| Residual | 0.3371167 | 15 | 0.02247444 | ||
| Pure Error | 0.0460833 | 5 | 0.00921667 | ||
| Cor Total | 71.329897 | 29 | |||
| Std. Dev. | 0.1499148 | ||||
| Mean | 2.6963333 | ||||
| C.V. % | 5.5599502 | ||||
| PRESS | 1.742712 | ||||
| R-Squared | 0.9952738 | ||||
| Adj R-Squared | 0.9908627 | ||||
| Pred R-Squared | 0.9755682 | ||||
| Adeq Precision | 58.298716 |
Where ** = not significant, and *** = significant