Supplementary Figures PCA scatter plot of MALDI-TOF MS data (obtained by culturing the Figure S.1 (A): L. isolates on ALOA agar, post 24 h incubation). Each point on the scatter plot monocytogenes refers to single isolate, with R2X (cumulative) = 0.56 and Q2 (cumulative) = 0.15. As observed in the plot no clear grouping of the isolates (according to their source of isolation was seen). The tolerance eclipse represents the 95% confidence interval limit and since observation 760 lies outside this eclipse it is considered as an outlier [DModX(Norm) value-0.38; D-Criticial value for model-1.30] Figure S.1 (B): PLS-DA scatter plot of MALDI-TOF MS data (obtained by culturing the L. isolates on ALOA agar, post 24 h incubation). Each point on the scatter plot monocytogenes refers to single isolate, with R2X (cumulative) = 0.78 and Q2 (cumulative) = 0.74. The tolerance eclipse represents the 95% confidence interval limit and since observation 702 lies outside this eclipse it is considered as an outlier [DModX(Norm) value-0.86; D-Criticial value for Figure S.2 (A): PCA scatter plot of MALDI-TOF MS data (obtained by culturing the L. isolates on HBA agar, post 24 h incubation). Each point on the scatter plot refers monocytogenes to single isolate, with R2X (cumulative) = 0.52 and Q2 (cumulative) = 0.20. As observed in the plot no clear grouping of the isolates was obtained (according to their source of isolation was
Supplementary Figures Figure S.1 (A): PCA scatter plot of MALDI-TOF MS data (obtained by culturing the L. monocytogenes isolates on ALOA agar, post 24 h incubation). Each point on the scatter plot refers to single isolate, with R2X (cumulative) = 0.56 and Q2 (cumulative) = 0.15. As observed in the plot no clear grouping of the isolates (according to their source of isolation was seen). The tolerance eclipse represents the 95% confidence interval limit and since observation 760 lies outside this eclipse it is considered as an outlier [DModX(Norm) value-0.38; D-Criticial value for model-1.30] Figure S.1 (B): PLS-DA scatter plot of MALDI-TOF MS data (obtained by culturing the L. monocytogenes isolates on ALOA agar, post 24 h incubation). Each point on the scatter plot refers to single isolate, with R2X (cumulative) = 0.78 and Q2 (cumulative) = 0.74. The tolerance eclipse represents the 95% confidence interval limit and since observation 702 lies outside this eclipse it is considered as an outlier [DModX(Norm) value-0.86; D-Criticial value for Figure S.2 (A): PCA scatter plot of MALDI-TOF MS data (obtained by culturing the L. monocytogenes isolates on HBA agar, post 24 h incubation). Each point on the scatter plot refers to single isolate, with R2X (cumulative) = 0.52 and Q2 (cumulative) = 0.20. As observed in the plot no clear grouping of the isolates was obtained (according to their source of isolation was
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