FIG. 3.

Small-scale fermentation of lactose of CNRZ302 (wild type) (A) and NZ6150 (ccpA disruption mutant) (B). Strains were grown to an OD₆₀₀ of 1.0 in lactose-containing medium and resuspended in a 4% β-glycerophosphate buffer. Fermentation was started by addition of 20 mM lactose. Medium components were analyzed by HPLC. ●, lactose; ■, galactose; ▴, glucose; ◊, lactate.