Figure 7. pH levels and hydrogen peroxide concentration vary among Lactobacillus supernatants.
Lactobacillus supernatants were collected from overnight cultures of each strain and evaluated for A) pH and B) hydrogen peroxide (μM) levels. Significance was measured using a one-way ANOVA after confirmation of a normal distribution by the Shapiro-Wilk test. ** p < 0.005; *** p< 0.001; **** p < 0.0001