Table 2.

Specific intracellular concentrations (μmol/g DCW) of NADH and NADPH in Escherichia coli strains ZF43ΔgdhA, ECW1, and ECW2 at 12 h of fermentation.

Strains	NADH	NAD+	NADH+NAD+	NADH/NAD+	NADPH	NADP+	NADPH+NADP+	NADPH/NADP+
ZF43ΔgdhA	0.25 ± 0.01	0.96 ± 0.05	1.21 ± 0.04	0.27	3.83 ± 0.04	3.52 ± 0.05	7.35 ± 0.01	1.09
ECW1	0.43 ± 0.00	0.90 ± 0.03	1.33 ± 0.02	0.48	3.36 ± 0.07	3.90 ± 0.03	7.25 ± 0.09	0.86
ECW2	0.21 ± 0.02	1.14 ± 0.04	1.35 ± 0.06	0.18	3.20 ± 0.09	3.86 ± 0.03	7.06 ± 0.06	0.83

The results represent the means from three independent experiments.