Research Article
Modelling the Biphasic Growth and Product Formation by Enterococcus faecium CECT 410 in Realkalized Fed-Batch Fermentations in Whey
Table 5
Parameter values (means ± SD) of the model (
A.9) developed for describing the production of mixed acid metabolites by
Ent. faecium CECT 410.
| | Fed-batch fermentation I | | Parameters | Acetic acid | Ethanol | Butane-2,3-diol |
| | (dimensionless) | NS | NS | NS | | (h-1) | 003 ± 0.0003 | 012 ± 0.0010 | 002 ± 0.0003 | | (dimensionless) | NS | NS | NS | | (h-1) | 0.405 ± 0.0119 | 1.307 ± 0.0312 | 0.260 ± 0.0102 | | KN (g/L) | 0.232 ± 0.0140 | 0.163 ± 0.0073 | 0.159 ± 0.0115 | | KIN (L/g) | 388.734 ± 19.7455 | 334.610 ± 13.6935 | 356.484 ± 23.1473 | | R 2 | 0.9945 | 0.9908 | 0.9951 | | RPDM | 2.986 | 5.600 | 2.866 |
| | Fed-batch fermentation II | | (dimensionless) | NS | NS | NS | | (h-1) | 009 ± 0.0010 | .010 ± 0.0012 | .010 ± 0.0005 | | (dimensionless) | NS | NS | NS | | (h-1) | 7.892 ± 0.1269 | 4.706 ± 0.1716 | 3.985 ± 0.0411 | | KN (g/L) | 14.424 ± 0.2671 | 5.766 ± 0.2749 | 5.067 ± 0.1056 | | KIN (L/g) | 958.354 ± 98.8409 | 553.908 ± 63.835 | 466.274 ± 44.0840 | | R 2 | 0.9844 | 0.9903 | 0.9941 | | RPDM | 9.092 | 4.918 | 3.071 |
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Statistically significant coefficients are expressed as means ± standard errors, NS: no significant
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