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Microbiological Assessment of Commercial Yogurt Sold in Ota Metropolis, Ogun State, Nigeria

Taiwo, O. S. and Afolabi, Richard Oyekunle and Oranusi, S. U. and Owolabi, Joshua B. and Oloyede, A. R. and Isibor, Patrick Omoregie and Omonigbehi, E. A. and Popoola, J.O and Obafemi, Yemisi Dorcas and Ejoh, Akpoyovware S. and Akinduti, P. A. and Adekeye, B. Temitope and Olorunshola, S. J. and Awotoye, Olufisayo Adebola and Kuye, Alice O. and Ige, Ojo Joseph (2019) Microbiological Assessment of Commercial Yogurt Sold in Ota Metropolis, Ogun State, Nigeria. In: 8th International Biotechnology Conference, Exhibition and Workshop, 2019, Online.

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Ten authorized Yogurt products purchased within Ota metropolis, Ogun State of Nigeria were subjected to pH, Total Bacterial Count (TBC) and Total Fungal Count (TFC) analysis. pH values were in the range of 4.05 to 5.50, the TBC and TFC values ranged between 1.0 x 103 - 5.0 x 105 cfu/ml and 1.0 x 103- 5.0 x 105 cfu/ml respectively. Eleven bacterial isolates were detected in the yogurt samples. Lactobacillus spp. and Bacillus spp. constituted 16% of the total microbial load, Corynebacterium spp., Klebsiela spp., Staphylococcus spp., and Pseudomonas spp. constituted 8% while Proteus spp., Micrococcus spp., Shigella spp., Listeria spp., and Streptococcus spp. constituted 4%. Fungal isolates obtained were Mucor spp. (22%), Geotrichum spp. (17%), Montospora spp. (11%), while Aspergillus spp., Rhizopus spp., and Fusanrium spp. constituted 6%.The antimicrobial susceptibility test showed that the isolates exhibited susceptible to Ciprofloxacin and Ofloxacin and resisted Nitrofurantoin, Augumentin, Cefixime, Ceufuroxime, Gentamicin and Ceftazidime. The isolates were plasmid encoded, with size range of 20,000- 40,000 Kilo base pairs. Result show no significant difference within the bacteria isolates (P> 0.05), while the fungi isolates showed significant difference (P<0.05). Significant difference also occurred between the bacteria and the fungi isolate (P< 0.05).

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Assessment, Bacteria, Fungi, Isolates and Plasmid.
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QR Microbiology
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 21 Nov 2019 10:30
Last Modified: 21 Nov 2019 10:30

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