Comparative Evaluation of the Microbial Safety of Boiled Locally Vended Ready-to-Drink, HTST Pasteurized and UHT Bovine Milk Sold in Nakawa Division of Metropolitan Kampala

Timothy Omara; Sarah Ndyamuhaki; Erisa Kigenyi; Sarah Kagoya; Felista Biira

doi:10.20944/preprints201811.0445.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 16 November 2018 / Approved: 19 November 2018 / Online: 19 November 2018 (10:19:56 CET)

This study evaluated the microbial safety of vended boiled, pasteurized and UHT milk sold in Nakawa, Kampala-Uganda. 15 milk samples were analyzed; 2 samples had Salmonella, 5 had S. aureus with a count of 1.66 0.02 log₁₀CFU/ml. E. coli was detected in 8 samples with 1.0 0.02 to 3.0 0.01log₁₀CFU/ml count. A high load of 3.0 CFU/ml was obtained in 3 samples with E. coli. Four E. coli positive samples had a contamination load of 2.0 0.015log₁₀CFU/ml of which one was pasteurized milk. Only a pasteurized milk showed a low E. coli load at 1.0 0.02log₁₀CFU/ml. All UHT milk had no microbial contamination. Both boiled and pasteurized milk had Salmonella, S. aureus and E. coli in levels above the set threshold limits. Milk consumers in Nakawa stand a potential public health risk of food poisoning reflected by presence of Salmonella, S. aureus and E. coli in some milk sold in the area.

Contamination, Escherichia coli, fecal coliforms, Nakawa, Salmonella, Staphylococcus aureus

LIFE SCIENCES, Microbiology

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Comparative Evaluation of the Microbial Safety of Boiled Locally Vended Ready-to-Drink, HTST Pasteurized and UHT Bovine Milk Sold in Nakawa Division of Metropolitan Kampala

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