Effect of bile on the lipid composition and surface properties of bifidobacteria

摘要: Aim: The changes produced on the bacterial surface of Bifidobacteria cells when they are grown in bile were compared with those provoked by added to bacteria absence bile. Methods and Results: adhesive properties, zeta potential lipid composition Bifidobacterial strains, isolated from human faeces MRS medium, determined. Bacteria showed a loss adherence autoaggregation correlation decrease hydrophobicity comparison without bile, concomitant two glycolipids, increase sugar content minor fatty acid composition. caused shock bile-free medium much less pronounced and, addition, no effect was apparent. Conclusions: results indicates that action properties is related metabolic changes. Significance Impact Study: Long-term exposure may cause affecting their irreversibly. This be taken as criterion define probiotic different strains.