Biotechnology

Volume 21 (3), 120-126, 2022


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Microbiological Assessment of Soya Milk Samples from Akoko Areas of Ondo State, Nigeria

Kehinde Tope Adegbehingbe, Bartholomew Saanu Adeleke and Felix Adeleke Ikuesan

Background and Objective: Consumption of nutritious foods provides the necessary energy required for cellular metabolism. Microbial contamination reduces food quality and quantity, which is a major concern to human health and safety. Hence, this study was designed to assess the microbiological quality of soya milk sold in the Akoko area of Ondo State. Materials and Methods: Microbial isolation was performed under aseptic conditions. The physicochemical parameters of soya milk (pH, total titratable acidity and turbidity) were determined. The antibiotic susceptibility test was achieved by the Kirby-Bauer method. Results: The total viable counts range from 3.0×106-5.1×106 CFU mL1. Identifiable microbial isolates include Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Streptococcus faecalis, Klebsiella pneumonia, Salmonella typhi, Aspergillus niger, A. flavus, Penicillium caseicolum and Fusarium oxysporum. The pH ranged from 6.12-6.48, with the soya milk samples from the Okusa market sample having the highest pH value of 6.48. The turbidity ranged from 0.3% transmittance to 7.5% transmittance. The highest TTA value of 6.77% was recorded from soya milk collected from the Ikare market. All the samples appeared creamy with milky and beany flavour. The antibiotic test revealed bacteria resistant to Ceftazidime, Cephalexin, Augmentin and Cloxacillin and the highest susceptibility of Streptococcus faecalis and Salmonella typhi to Cotrimoxazole, Ciprofloxacin and Ampicillin with a diameter zone of inhibition of 27.0 mm was recorded. Conclusion: The results obtained indicated that the identified bacterial isolates might be traced to improper quality control and post-contamination of the processed soya milk. Hence, observing strict hygiene practices will help reduce food contamination and enhance consumer safety.

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How to cite this article:

Kehinde Tope Adegbehingbe, Bartholomew Saanu Adeleke and Felix Adeleke Ikuesan, 2022. Microbiological Assessment of Soya Milk Samples from Akoko Areas of Ondo State, Nigeria. Biotechnology, 21: 120-126.


DOI: 10.3923/biotech.2022.120.126
URL: https://ansinet.com/abstract.php?doi=biotech.2022.120.126

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