Table 2.
Main effects and interactions of immobilization parameters of Erwinia sp. D12 cells in calcium alginate and their influence on converting sucrose into reducing sugars in a batch process.
| Effect | Standard error | t (3) | P | |
|---|---|---|---|---|
| (1) Sodium alginate (L)* | 31.3234 | 6.5836 | 4.7578 | 0.0176 |
| Sodium alginate (Q) | −3.6308 | 6.8480 | −0.5302 | 0.6327 |
| (2) Cell mass (L)* | 179.5066 | 6.5836 | 27.2655 | 0.0001 |
| Cell mass (Q)* | 99.9771 | 6.8480 | 14.5996 | 0.0007 |
| (3) CaCl2 (L)* | 136.1412 | 6.5836 | 20.6787 | 0.0002 |
| CaCl2 (Q)* | 23.4725 | 6.8480 | 3.4277 | 0.0416 |
| (1)L × (2)L | −19.0278 | 8.5982 | −2.2130 | 0.1138 |
| (1)L × (3)L* | 34.6544 | 8.5982 | 4.0304 | 0.0275 |
| (2)L × (3)L* | 81.8471 | 8.5982 | 9.5191 | 0.0025 |
*Statistically significant parameters at a 95% confidence level.
L: linear parameter; Q: quadratic parameter.