Figure 3
Detection limit for L. monocytogenes WSLC 1865 of the A511::celB/MUG assay at 85°C, pH 5 and a substrate concentration of 0.3 mM MUG. The Y-axis shows signal-to-noise ratio of phage-infected samples containing 2 × 104 cfu/ml (●), 104 cfu/ml (![[diamond]](/corehtml/pmc/pmcents/x25C6.gif)
), 8 × 103 cfu/ml (![[filled square]](/corehtml/pmc/pmcents/x25AA.gif)
), 6 × 103 cfu/ml (![[filled triangle]](/corehtml/pmc/pmcents/utrif.gif)
) 4 × 103 cfu/ml (□) and control samples with phage-only (![[diamond with plus]](/corehtml/pmc/pmcents/x25C7.gif)
) obtained over 24 h. All measurements were performed in triplicate, bars represent the mean values, and error bars indicate standard deviation of the mean.
), 8 × 103 cfu/ml (), 6 × 103 cfu/ml () 4 × 103 cfu/ml (□) and control samples with phage-only () obtained over 24 h. All measurements were performed in triplicate, bars represent the mean values, and error bars indicate standard deviation of the mean.