Enumeration Of Bifidobacterium Spp., Lactobacillus Acidophilus and Starter Cultures from Commercial Probiotic Yogurts and Freeze-Dried Yogurt Starter Mixes

Probiotic yogurt is a popular functional food to deliver of probiotic cells for the health-enhancing effects worldwide. The viability probiotics in before consumption most important factor providing desired effects, however, microorganisms have occasionally inadequate marketable products. In this current study, Bifidobacterium spp., L. acidophilus and yoghurt starter bacteria enumerations were made commercial freeze-dried mixes. RCA 5.3 MRS 5.2 media used delbrueckii subsp. bulgaricus counting, ST Agar M17 Stretococcus thermophilus counts. While using MRS-Bile RCA-Clindamycin enumeration, spp. counts performed MRS-NNLP medium. 5 out samples (A, C, D, E) did not reveal satisfactory recovery (< log CFU/g) colonies on while colony below CFU/g same tested 4 E). rates over 9 obtained all both media. problem insufficient that occurred some was valid S. thermophilus. This work indicated high amounts detected two declared as label (F G). On other hand, bifidobacteria determined above only 1 sample (B) 7 yoghurts claimed be study reveals relevant information yogurts Turkey discusses detail possible reasons results obtained.