Victoria O. Adetunji
Veterinary Public Health Unit, Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
Mary I. Arigbede
Veterinary Public Health Unit, Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
ABSTRACT
Critical Control Points (CCPs) associated with the processing of cheese in five local cheese factories and yoghurt in two conventional processing factories, located in Ilorin, Kwara state, Nigeria were identified using flow diagrams and microbial assay for detection of E. coli and Listeria monocytogenes. Fifty-eight (58) samples were collected along the processing lines. The CCPs identified were reception of raw milk, addition of coagulant, curdling point and cheese in moulds for cheese processing, while for yoghurt processing, powdered milk, pasteurization, addition of inoculum, fermentation and the finished product were the CCPs. In all the factories evaluated, E. coli and Listeria monocytogenes were observed to be present throughout the processing line with the finished product containing a significant level (p<0.05) of these organisms which exceeded international standard. This depicts the inefficient method of processing of these ready to eat foods. Thus, presenting a risk of outbreak of infection caused by these microorganisms in the state evaluated.
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How to cite this article
Victoria O. Adetunji and Mary I. Arigbede, 2011. Occurrence of E. coli O157:H7 and Listeria monocytogenes and Identification of Hazard Analysis Critical Control Points (HACCPs) in Production Operations of a Typical Tropic Cheese Wara and Yoghurt. Pakistan Journal of Nutrition, 10: 796-804.
DOI: 10.3923/pjn.2011.796.804
URL: https://scialert.net/abstract/?doi=pjn.2011.796.804
DOI: 10.3923/pjn.2011.796.804
URL: https://scialert.net/abstract/?doi=pjn.2011.796.804
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