RESEARCH JOURNAL OF FOOD SCIENCE AND NUTRITION
Integrity Research Journals
ISSN: 2536-7080
Model: Open Access/Peer Reviewed
DOI: 10.31248/RJFSN
Start Year: 2016
Email: rjfsn@integrityresjournals.org
Microbial air quality assessment of some selected food industries in Oluyole Ibadan, Nigeria
https://doi.org/10.31248/RJFSN2024.191 | Article Number: 78C0E9952 | Vol.9 (6) - December 2024
Received Date: 08 November 2024 | Accepted Date: 14 December 2024 | Published Date: 30 December 2024
Authors: Aderonke Oluwakemi Basil* and Blessing I. Nwadike
Keywords: Air assessment, environmental monitoring, EU, food industries, microbial quality, WHO GMP.
Air assessment is an essential component of environmental monitoring systems, helping to evaluate air quality, the health of personnel, and product safety in food industries. This study aimed to assess the microbial air quality of selected food industries in Ibadan and to investigate the presence of antibiotic-resistant bacteria. Microbial load enumeration was carried out using the settle plate method, followed by biochemical identification, pathogenicity, and antibiotic sensitivity tests. Selected isolates were also characterized molecularly. The results revealed that two out of the three sites exceeded the European Union (EU) and World Health Organization (WHO) Good Manufacturing Practices limit of 50–100 CFU for air microbial counts. The isolates identified in this study included Serratia, Bacillus, Staphylococcus, Proteus, Micrococcus, and Enterobacter. Three isolates exhibited positive reactions to hemolysis and DNase tests. While 100% of the isolates were susceptible to ciprofloxacin and 89.5% were susceptible to meropenem, resistance was observed against ceftriaxone, tetracycline, penicillin, vancomycin, gentamicin, and trimethoprim/sulfamethoxazole. Alarmingly, 57.8% of the isolates displayed multiple antibiotic resistance patterns, posing significant threats to public health. Therefore, the finding indicates the need for enhanced air quality control and hygiene practices in food industries, as well as periodic monitoring of the air environment.
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