Fig. 3
Effect of lysozyme with and without EDTA (1 mM) on the co-culture of Lactobacillus rhamnosus GG and Staphylococcus epidermidis 444 at different pH: a pH 2; b pH 6; c pH 7.5 and d pH 8.5. The results are mean values of three replicates. OD600 of the positive controls: C+(a) = 0.37; C+(b) = 1.15; C+(c) = 1.19;C+(d) = 1.40. (*) indicates a significant difference (P < 0.05) between each test and the positive control (without lysozyme). The lowercase letter a indicates a significant difference (P < 0.05) between each test and its preceding. Error bars represent the SD (standard deviation)