Modelling the Biphasic Growth and Product Formation by Enterococcus faecium CECT 410 in Realkalized Fed-Batch Fermentations in Whey
Table 4
Parameter values (means ± SD) of the models (A.6) and (A.7) used for predicting the biphasic growth of Ent. faecium CECT 410 and lactic acid production in the two realkalized fed-batch fermentations.
Parameter
Fed-batch fermentation I
Fed-batch fermentation II
μ max1 (h-1)
0.130 ± 0.0341
0.365 ± 0.0653
KN1 (g/L)
0.050 ± 0.0165
0.029 ± 0.0046
Nmin1 (g/L)
0.346 ± 0.0180
0.331 ± 0.0038
μ max2 (h-1)
0.300 ± 0.0215
0.118 ± 0.0108
KN2 (g/L)
0.0012 ± 0.00001
0.020 ± 0.0053
Nmin2 (g/L)
0.022 ± 0.0018
0.035 ± 0.0159
KiLA (g/L)
0.029 ± 0.0043
0.055 ± 0.0064
KiAA (g/L)
NS
NS
KiEtOH (g/L)
NS
NS
KiB (g/L)
NS
NS
RX2
0.9977
0.9980
RPDMX
2.5779
3.8516
α LA (dimensionless)
1.371 ± 0.2090
0.075 ± 0.0027
β LA (h-1)
0.013 ± 0.0092
0.040 ± 0.0014
RLA2
0.9953
0.9978
RPDMLA
3.049
8.661
Statistically significant coefficients are expressed as means ± standard errors, NS: no significant .