Evaluation of bile tolerance in dairy and human origin Lactobacillus fermentum strains

Abstract

Normal 0 false false false EN-IN X-NONE X-NONE Eleven Lactobacillus fermentum strains including seven dairy and four faecal origin were studied for in vitro bile tolerance at 0, 0.3, 0.6, 0.9, 1.2, 1.5 and 1.8 % bile concentration to assess their probiotic potential. At 0.3 and 0.6% bile concentration except NCDC-400, all dairy origin strains shown 3 to 5 log reduction in count, while faecal origin strains did not show much reduction. Almost similar trend was observed for dairy strains at 1.2 to 1.5 % bile concentration whereas BIF-18, BIF, 19 and BIF 20 from faecal strains shown better growth. Lactobacillus fermentum BIF-19 from faecal and Lactobacillus fermentum NCDC-400 from dairy origin were most bile tolerant. Out of all strains BIF-19 exhibited highest survival in all concentration of bile. /* Style Definitions */ table.MsoNormalTable {mso-style-name:Table Normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri,sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Times New Roman; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}