Isolation And Comparative Analysis Of Airborne Microorganisms In Different Location Withinbiology Department, Ibrahim Badamasi Babangida University Lapai. Niger State
DOI:
https://doi.org/10.63561/jacsr.v2i4.1023Keywords:
Bacteria, Fungi, Airborne, diseases, BiologyAbstract
Airborne microorganisms, also known as bioaerosols, are key determinants of indoor air quality and human health, particularly in densely populated environments such as universities. This study investigated the diversity and distribution of airborne bacteria and fungi across classrooms, laboratories, libraries, and toilets within the Department of Biology, Ibrahim Badamasi Babangida University, Lapai, Niger State, Nigeria. Air samples were collected using settle plates and an Anderson air sampler, followed by culture-based isolation and characterization. Bacterial isolates were identified using colony morphology, Gram staining, and a series of biochemical tests. Fungal isolates were characterized based on microscopic features and colony morphology. Results revealed six bacterial species: Staphylococcus aureus, Bacillus anthracis, Streptococcus pneumoniae, Pseudomonas aeruginosa, Corynebacterium diphtheriae, and Micrococcus sp., and four fungal species: Aspergillus sp., Mucor sp., Candida sp., and Fusarium sp. The highest microbial loads were detected in laboratories and toilets, indicating these areas as hotspots for airborne contamination. Staphylococcus aureus and Aspergillus sp. were the most prevalent across all locations, suggesting that human activity, environmental dust, and poor ventilation are major contributors to microbial dissemination. These findings suggested the need for routine monitoring, improved ventilation, and enhanced hygiene practices to mitigate airborne microbial exposure, thereby safeguarding the health of students and staff in educational settings.
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