African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5211

Full Length Research Paper

Medical implications of bio-deteriorating agents in stored fish samples in Nigeria

Akinola John AKINTOLA, Oyebamiji Oyewole OYEGOKE and Oluwatoyin Sherifat LAWAL
Department of Pure and Applied Biology, Ladoke Akintola University of Technology P. M. B 4000, Ogbomosho, Oyo State, Nigeria.
Email: [email protected]

  •  Accepted: 12 June 2013
  •  Published: 25 June 2013


The objectives of this study were to examine the physical, microbial and nutritional qualities of smoked fish during storage at room temperature. Smoked fish samples were obtained from a processing plant in Osogbo metropolis (Osun state, Nigeria) and stored at room temperature for four months. They were analyzed for insect pest activity, microbial spoilage, hydrogen ion concentration, protein, oil and moisture contents and free fatty acid value before and after storage. The insects observed were Dermestes maculatus and Lardoglyphus sp., the presence of these insect pests signified post-harvest and economic losses. Microorganisms identified were Klebsiella pnuemoniae, Pullularia pullulansFusarium sp, Microsporium gypseum, Scopulariopsis brevicaulis, Rhizopus japonicus, and Claudosporium herbarum. Hydrogen ion concentration was between (3.60 - 5.37 and 3.60 - 5.39); Protein content was between (51 – 68% and 51-66%); moisture was between (14-24% and 15 – 26%); oil content was (5 - 32% and 3 - 18%); acid value ranged between 11-18 mgKOH/g and 37-86 mgKOH/g before and after storage, respectively.


Key words: Bio-deteriorating agent, smoked fish, temperature, insect pest activity,Scopulariopsis brevicaulis.