Impact of an energy-conserving strategy on succinate production under weak acidic and anaerobic conditions in Enterobacter aerogenes

Table 3 Parameter profiles in reactions with ES08 and ES08ΔptsG at pH 5.7 culture conditions

Strain	Biomass^a, g[DCW]/L	Consumed glucose, g/L	End-product, g/L						Succinate yield^b, % (g/g)	Volumetric productivity^c (g/L/h)
Strain	Biomass^a, g[DCW]/L	Consumed glucose, g/L	Pyruvate	Lactate	Malate	Succinate	Formate	Acetate	Succinate yield^b, % (g/g)	Volumetric productivity^c (g/L/h)
ES08^d	7.2	62.9	1.0	0.6	0.3	37.8	0.1	1.0	60.1	0.63
ES08ΔptsG	7.3	63.8	<0.1	<0.1	0.1	55.4	0.1	1.8	86.8	0.92

^aInitial biomass was adjusted to ~7.0 g[DCW]/L.
^bSuccinate yield is grams of product per grams of consumed glucose expressed as a percentage.
^cVolumetric productivity indicates succinate titer (g/L) per hour (h).
^dES08 and ES08ΔptsG strains were cultivated for 60 h.

ISSN: 1475-2859