Bifidobacteria are the predominant species in the feacal microflora of breast fed infants is due to the bifidigeneic factors. The efficient isolates of Bifidobacteria were selected, based on their probiotic characteristics. Isolate BAL I was able to grow under acidic condition of pH 3.5 and 4.5, resistant against bile salt at 0.5 per cent and resistant to antibiotic Cholaramphenicol (30 mcg), Ampicillin (10 mcg) and Gentamycin (10 mcg). The isolate BAL I was found to show maximum inhibitory activity against E.coli (10mm) compared to Bifidobacterium bifidum (ATCC 29521) which recorded 8mm of inhibition zone. The integration of bifidobacteria in dairy and poultry products is of interest for reinstalling the intestinal microflora.
Bifidobacterium, Infant feces, Antibiotics
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