TABLE 2.

Mass yields of products during exclusively anaerobic growth on glucose-rich media^a

Strain	Headspace	IPTG (mM)	Yield (g of product/g of glucose) ofb:
			Succinate	Pyruvate	Acetate	Ethanol	Fumarate
NZN111	CO2	0.0	0.53 a	0.76 a	0.06 a	0.06 a	0.00 a
NZN111/pTrc99A-pyc	CO2	0.0	0.77 b	0.25 b	0.09 b	0.03 b	0.00 a
NZN111/pTrc99A-pyc	CO2	1.0	0.81 c	0.19 c	0.11 c	0.05 c	0.00 a
AFP111	CO2	0.0	0.88 d	0.00 d	0.22 d	0.07 d	0.00 a
AFP111/pTrc99A-pyc	CO2	0.0	0.96 d	0.00 d	0.23 d	0.06 ade	0.07 b
AFP111/pTrc99A-pyc	CO2	1.0	0.35 e	0.00 d	0.09 abc	0.06 ae	0.47 c
AFP111/pTrc99A-pyc	H2	1.0	0.91 d	0.00 d	0.11 c	0.07 ade	0.00 a

^aSerumbottles were under an atmosphere of CO₂ or H₂.

^bYields followed by different letters were statistically significantly different at the 90% confidence level.