Modelling the Biphasic Growth and Product Formation by Enterococcus faecium CECT 410 in Realkalized Fed-Batch Fermentations in Whey
Table 2
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 second 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
0.625 ± 0.0389 a
0.649 ± 0.0207 a
0.648 ± 0.0137 a
c 1
1.458 ± 0.1972 a
1.460 ± 0.1744 a
1.460 ± 0.1560 a
b 1
0.099 ± 0.0167 a
0.100 ± 0.0123 a
0.100 ± 0.0100 a
Length of the second growth phase
Parameter
36–180 h
48–180 h
60–180 h
3.642 ± 0.0116 a
3.634 ± 0.0102 b
3.635 ± 0.0105 c
2.856 ± 0.0300 a
2.906 ± 0.0291 b
2.898 ± 0.0319 c
0.021 ± 0.0002 a
0.022 ± 0.0002 a, b
0.022 ± 0.0003 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.
