Investigation of Bacteria and Fungi Associated with Onion (Allium cepa) Bulbs Rot Purchased from Markets in Makurdi, Central Nigeria

Authors

  • Paulyn Tracy Aernan Department of Microbiology, Joseph Sarwuan Tarka University P M B 2373, Makurdi, Benue State, Nigeria.
  • Joel Inya Odo Department of Fisheries and Aquaculture, Joseph Sarwuan Tarka University, Makurdi, Nigeria.
  • Torkwase Janet Aondofa Microbiology Unit, Department of Biological Sciences, Abubakar Tafawa Balewa University, P M B 0248, Bauchi State, Nigeria.
  • Donald Jumbo Anietie Department of Microbiology, Joseph Sarwuan Tarka University P M B 2373, Makurdi, Benue State, Nigeria.
  • Muhammad Naeem Iqbal Pacific Science Media, England, IG6 3SZ, United Kingdom; Association of Applied Biomedical Sciences, Narowal, Pakistan. https://orcid.org/0000-0002-6082-0196

Keywords:

Allium cepa, Bacteria, Fungi, Escherichia coli, Aspergillus spp toxins.

Abstract

Onion (Allium cepa) sometimes referred to as the bulb onion and utilized as a vegetable is the most extensively cultivated species of the genus Allium. This study evaluated the bacteria and fungi linked to the rot of onion bulbs purchased from markets within the Makurdi metropolis. Samples were analyzed using two dilution factors (103 and 105) for each sample isolation. All other relevant tests carried out adopted standard microbiological procedures for bacteria and fungi isolation, characterization, and identification. The percentage prevalence of bacterial isolates was; Escherichia coli (33.33%), Pseudomonas spp (30%), Staphylococcus spp (20%), and Bacillus spp (16.67%), while fungal isolates were; Aspergillus spp (43.33%), Rhizopus spp (26.67%), Mucor spp (16.67%), and Saccharomyces cerevisiae (13.33%). The average bacterial count ranged between 20.8 x 104 and 22.4 x 106 CFU/ml, while the fungal counts varied between 0.1 x 104 and 1.0 x 106 CFU/ml. Since these microorganisms are also known to produce toxins harmful to human and animal health, having the right mycological knowledge, storage options, and handling techniques would help to prevent onion bulbs from rotting and subsequently deteriorating, ensuring that they are available to society throughout the year.

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Published

2023-11-26

How to Cite

Aernan, P. T., Odo, J. I., Aondofa, T. J., Anietie, D. J., & Iqbal, M. N. (2023). Investigation of Bacteria and Fungi Associated with Onion (Allium cepa) Bulbs Rot Purchased from Markets in Makurdi, Central Nigeria. International Journal of Nanotechnology and Allied Sciences, 7(2), 14–23. Retrieved from https://psmjournals.org/index.php/ijnas/article/view/759

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