Table 3.

Comparative analysis of γ-PGA production at 50 °C in 10 L fermentor between GXA-28 and GXG-5

Strain	Maximum OD660nm	Maximum γ-PGA yield (g/L)	Residual glucose (g/L)	Residual l-glutamate (g/L)	Time (h)	γ-PGA productivity (g/L/h)	Conversion efficiency (%)
GXA-28	4.82 ± 0.18	16.39 ± 0.57	2.75 ± 0.23	4.38 ± 0.26	22	0.75	81.95a
GXG-5	4.50 ± 0.15	19.50 ± 0.75	0	–c	34	0.57	78.00b

^aThe conversion efficiency was defined as the ratio of γ-PGA yield and exogenous l-glutamate concentration

^bThe conversion efficiency was defined as the ratio of γ-PGA yield and glucose concentration

^cNo detect