Lactic acid production by Enteroccocus faecium in liquefied sago starch

AMB Express

Table 1 Overall productivity of the repeated batch fermentation process in two stages during eleven cycles for the production of lactic acid in liquefied sago starch by E. faecium

Parameter^a	Cycles 1-5	Cycle (6–11 )
LA concentration (g/l)	19.2 ± 8.5	36.3 ±4.71
Volumetric productivity (g/lh)	1.28 ± 0.24	1.96 ±0.24
Specific Productivity ( $\frac{g_{LA}}{g_{DCW}}$ )	9.86 ± 0.35	11.45 ± 1.13
Yield_LA/TS (g/g)	0.47 ± 0.021	0.57 ± 0.14
Residual glucose	4.8 ± 4.01	3.17 ± 1.86
Dry Cell weight (g/l)	1.95 ± 0.54	3.17 ± 0.19

^aData were obtained as the mean of the values of each fermentation cycle where maximum productivity was observed.