TABLE 2.

Nonreplicating lactic acid fluxes for MBP98 and specific growth rates for MBP71 on various sugar sources^a

Sugar	Relative lactic acid flux for nonreplicating growth (%)			Specific growth rate (h−1) for exponential growth MBP71
	MBP71	MBP89 (low activity)	MBP98 (high activity)
Lactose	100	(146)	169	1.01
Fructose			152	0.97
Glucose			141	1.09
Mannose			131	1.03
Galactose			105	0.85
Maltose			85	0.86
Trehalose			78	0.81
Cellobiose			66	0.84

^aStationary-phase cultures of MBP98 in M17 containing thymidine and erythromycin supplemented with 1% sugar were washed and inoculated into M17 supplemented with 1% sugar. The OD₆₀₀ and pH were determined every hour. From 2.5 to 5.5 h the rates of acid production were practically constant, and they were divided by the cell density at 3 h to obtain the lactic acid flux. The fluxes were expressed relative to the value for an MBP71 culture grown in LM17. The value for MBP89 grown in LM17 was obtained in another experiment. The specific growth rates for MBP71 on the various sugars are indicated. MBP71 was grown in M17 containing thymidine supplemented with 1% sugar. The rates were determined from exponential fits of four or five values (R² > 0.998). The value in parentheses is from another experiment.