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TL;DR: In this article , the prevalence of Bifidobacteria spp. in faeces was determined using common bacterial growth media, including Man Rogos Sharpe (MRS), Brain Heart Infusion (BHI), Luria Bertani (LB) broth, and Bifidisobacteria agar.

Abstract: After examining the Bifidobacterium spp. population in faeces samples from breastfed and formula-fed infants, an antibiogram was created. The prevalence of Bifidobacterium spp. in faeces was determined using common bacterial growth media, including Man Rogos Sharpe (MRS), Brain Heart Infusion (BHI), Luria Bertani (LB) broth, and Bifidobacteria agar. According to the findings, infants who are breastfed have a high population of Bifidobacterium spp. in their faeces, whereas newborns who are fed formula have a low population. Through using phylogenetic analysis of the 16S rRNA, (Xylose/Fructose-6-phosphate phosphoketolase) xfp, and RFLP mapping of Bifidobacterium isolates, it was possible to identify new and unique Bifidobacterium species. The intensity of the reddish brown colour produced during the F6PPK (Fructose-6-phosphate phosphoketolase) assay is an accurate indicator of the proportion of various Bifidobacteria present. Bifidobacteria agar media produced the greatest amounts of Bifidobacteria diversity and recovery. Small (SCV) and large colony variations (BCV) were formed during growth on different mediums. We are aware that the varied antibiotic minimum inhibitory concentration (MIC) values can change depending on the use of different media, growth circumstances, bile salt treatment, and low pH. The findings of this study demonstrate that test conditions also impact the diversity of microbiological conditions that distinguish between resistant and susceptible bacteria.