FIG. 6.

Effect of exposure to 0.2% H₂O₂ on viable numbers of wt L. monocytogenes (▴) and the piezotolerant strain AK01 (▪). Experiments were performed in BHI broth, at 30°C, with shaking, in the absence of light. Values are means of triplicate measurements from a representative experiment. Bars represent standard deviations (n = 3).