Figure 4

Protect effect of selenium-enriched B. amyloliquefaciens C-1 to Caco-2 cell membrane integrity challenged by S. typhimurium ATCC14028 by LDH activity assay. S (S. typhimurium ATCC14028 treatment); C-1+S (2 h incubation with C-1 firstly, then S. typhimurium added and incubated for another 2 h); S+C-1 (2 h incubation with S. typhimurium firstly, then C-1 added and incubated for another 2 h); C-1-Se+S (2 h incubation with selenium-enriched C-1 firstly, then S. typhimurium added and incubated for another 2 h); S-C-1+Se (2 h incubation with S. typhimurium firstly, then selenium-enriched C-1 added and incubated for another 2 h). The statistical significance was calculated by one-way ANOVA.