Bioreactor Scale-Up and Kinetic Modeling of Lactic Acid and Biomass Production by Enterococcus faecalis SLT13 during Batch Culture on Hydrolyzed Cheese Whey

Table 2

Best-fitting values of kinetic parameters obtained by modeling Enterococcus faecalis SLT13 growth, sugar utilization, and lactic acid production in M17 and HCW in 2 L and 20 L bioreactors.

Kinetic parameters	2 L M17	2 L HCW	20 L HCW
Biomass production model
μmax (h^−1)	0.34	0.99	1.09
Kix (g/g)	114.06	399.75	394.20
Ksx (g/g)	0.023	0.0023	4.229
Kpx (g/g)	18.11	3.77	5.001
Kd (h^−1)	0.013	0.0001	0.0001
Sugar utilization model
Kis (g/g)	290.13	399.99	143.391
Kss (g/g)	2.73	0.01	0.15
Kps (g/g)	10.44	11.16	20.07
qsmax (g/g·h)	4.92	4.99	4.16
Lactic acid production model
Kip (g/g)	135.89	100.00	373.89
Kpp (g/g)	5.31	44.99	42.83
Ksp (g/g)	0.025	0.01	0.065
qpmax (g/g·h)	1.027	2.04	1.863
α (g/g)	0.052	0.01	0.017
R^2	94.34	88.81	97.87