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. 2022 May 30;12(11):1407. doi: 10.3390/ani12111407

Figure 2.

Figure 2

Distribution of Enterococcus faecalis and Enterococcus faecium isolated from bovine mastitis milk (BMM) and bovine normal raw milk (NRM) according to their virulence factors. (A) Biofilm formation ability (OD values) and (B) gelatinase and hemolysin production. Biofilm formation criteria comprised non-biofilm formation (optical density (OD) ≤ 0.052), weak biofilm formation (0.052 < OD ≤ 0.104), moderate biofilm formation (0.104 < OD ≤ 0.208), and strong biofilm formation (OD > 0.208). BMM: bovine mastitis milk, NRM: bovine normal raw milk, W: weak, M: moderate, S: strong. *** indicates significant difference in strong biofilm formation between the BMM (S) and the NRM (S) group (p < 0.0001; Pearson’s chi-square test). * indicates significant difference in gelatinase production between the BMM and the NRM groups (p < 0.05; Pearson’s chi-square test).