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. 2018 Jan 8;22(3):1972–1983. doi: 10.1111/jcmm.13496

Figure 2.

Figure 2

Streptococcus mutans growth in the presence of treated and untreated Lactobacillus sp. supernatant. Optical density (OD) of Streptococcus mutans growth in the presence of treated and untreated Lactobacillus sp. supernatants (L. casei, L. reuteri, L. plantarum and L. salivarius). Control: Streptococcus mutans grown in BHI broth. Untreated: Spent Culture Supernatant (SCS) of each strain supernatant, pH treated: supernatant with adjusted pH 6.5, catalase treated: supernatant after addition of 0.5 mg/ml catalase enzyme and trypsin treated: supernatant after addition of 1 mg/ml trypsin enzyme. Data are expressed as the mean ± S.D., **P < 0.05 and ***P < 0.01 compared with Streptococcus mutans grown in BHI broth as control (Tukey's multiple comparison test).