TABLE 3.

Effect of increasing O₂ concentrations on the glucose (5 mM)-dependent product profiles of RD-1^a

Initial O2 concn (%)	O2 consumed (mmol liter of culture fluid−1)	Products (mM)				Acetate/glucose ratio	Recovery of reducing equivalents (%)b
		Acetate	Ethanol	Lactate	H2
Anoxic	NAc	12.1	0.8	0	0.02	2.42	89
0.3	0.29	11.6	0.8	0	0.02	2.32	85 (86)
2.0	2.11	7.5	2.6	0.3	0.54	1.50	81 (88)
2.8	2.22	6.4	2.9	0.3	0.52	1.28	75 (83)
3.7	2.17	6.8	1.5	0.4	0.53	1.36	66 (73)

^aGlucose was totally consumed in all cultures. Values were corrected with control values obtained from cultures lacking glucose and are means of three replicates. The standard deviations were less than 10%. 

^bValues in parentheses take into account the amount of reductant that was theoretically required for the reduction of O₂. 

^cNA, not applicable.