alexa Microbiological Quality of Household Refrigerators in Three Cities South-West of Nigeria
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
Open Access

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Research Article

Microbiological Quality of Household Refrigerators in Three Cities South-West of Nigeria

Flora Oluwafemi1*, Sarah Akpoguma1, Taiwo Oladiran1 and Adelodun Kolapo2

1Department of Microbiology, Federal University of Agriculture, Abeokuta, Nigeria

2Department of Biology, The Polytechnic, Ibadan, Nigeria

*Corresponding Author:
Flora Oluwafemi
Department of Microbiology
Federal University of Agriculture
Abeokuta, Nigeria
Tel: +2348035028602
E-mail: [email protected]

Received Date: May 28, 2015; Accepted Date: June 30, 2015; Published Date: July 08, 2015

Citation: Oluwafemi F, Akpoguma S, Oladiran T, Kolapo A (2015) Microbiological Quality of Household Refrigerators in Three Cities South-West of Nigeria. J Microb Biochem Technol 7:206-209. doi:10.4172/1948-5948.1000206

Copyright: © 2015 Oluwafemi F, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Household refrigerators are a potential source of pathogen contamination for foods leading to food spoilage and food borne diseases. This study was carried out to examine the consumers’ knowledge and hygiene status of household refrigerators in Ibadan, Lagos and Abeokuta. One hundred and eighty households were randomly selected. Questionnaires covering social demographic characteristics, refrigerator quality and maintenance practices, householders’ knowledge about food borne diseases, and frequency of electricity supply were administered. The interior of each refrigerator was swabbed using a sterile swab stick that had been pre-soaked in peptone diluent. Each sample collected was plated out on four different culture media viz. Nutrient agar, MacConkey agar, Mannitol Salt agar and Potato Dextrose agar. Results showed that majority of the householders had good knowledge of food borne disease, powered their refrigerators with generators and have some levels of education. Some refrigerators were completely free from contamination (neither bacteria nor fungi was detected) while others were found to be contaminated. Total viable count of bacteria ranged between 0 and 14.1 × 106 cfu/ml while fungi count ranged from 0 to 6.8× 106 cfu/ml. Bacteria and fungi isolated from the refrigerators were Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Enterobacter spp., Klebsiella spp. and Shigella spp., Aspergillus flavus, A. niger, A. fumigatus, Saccharomyces cerevisae and Rhizopus spp. Findings show the presence of microorganisms which can cause food spoilage and food borne diseases. Educational programmes are needed to improve the refrigeration practices and the issue of regular supply of electricity is paramount in the hygiene of refrigerators.

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