Modelling the Biphasic Growth and Product Formation by Enterococcus faecium CECT 410 in Realkalized Fed-Batch Fermentations in Whey
Table 1
Parameter values (means ± SD) of the Logistic equations (A.1) and (A.2) obtained by considering different time intervals for the first and second growth phases in the first realkalized fed-batch culture of Ent. faecium CECT 410 in whey.
Length of the first growth phase
Parameter
0–36 h
0–48 h
0–60 h
K 1
0.351 ± 0.0153 a
0.392 ± 0.0168 b
0.433 ± 0.0180 c
c 1
1.328 ± 0.3491 a
1.160 ± 0.2941 b
1.037 ± 0.2360 b
b 1
0.217 ± 0.0504 a
0.145 ± 0.0320 b
0.101 ± 0.0200 c
Length of the second growth phase
Parameter
36–180 h
48–180 h
60–180 h
1.420 ± 0.0174 a
1.396 ± 0.0141 b
1.390 ± 0.0147 c
2.179 ± 0.0478 a
2.310 ± 0.0540 b
2.351 ± 0.0716 b
0.027 ± 0.0008 a
0.029 ± 0.0008 a
0.030 ± 0.0010 b
Statistically significant coefficients are expressed as means ± standard errors. The mean values within rows followed by the same letter are not significantly different from each other.
