Fig 1.
L. monocytogenes survival after challenge with artificial gastric fluid. L. monocytogenes 10403S (A) and J1-194 (B) were grown to stationary phase at 37°C (black), 30°C (gray), or 7°C (white) in BHI before being exposed to artificial gastric fluid (pH approximately 3.5) at 37°C for various amounts of time. Log reduction was calculated as log10 CFU/ml before treatment minus log10 CFU/ml after treatment. Capital letters represent statistical groupings of growth temperatures within exposure time (ANOVA; post hoc Tukey HSD; P ≤ 0.05). Bars show the averages of three biological replicates; error bars represent standard deviations.