FIG. 1.

Influence of fermentation conditions on the cell growth (in log CFU ml⁻¹) of a monoculture of Listeria innocua LMG 13568 in MRS medium at (a) constant pH 6.5 and 35°C (○), 30°C (⋄), and 20°C (□) and at (b) 20°C and constant pH 5.2 (○), with 40 g liter⁻¹ of sodium chloride (⋄), and with 40 g liter⁻¹ of sodium chloride and 200 ppm of sodium nitrite (□). Symbols represent experimental data, and lines are according to the model. Standard deviations (not shown) were below 5% of the mean value of the cell counts.