MYCOLOGICAL EVALUATION OF DIFFERENTLY PRESERVED TILAPIA FISH IN ABEOKUTA NORTH LOCAL GOVERNMENT, NIGERIA
DOI:
https://doi.org/10.51406/jagse.v12i2.1390Keywords:
fungi load, tilapia, mycological evaluation, fungi diversityAbstract
Fungi load and diversity of differently preserved tilapia fish obtained from Olomoore market, Abeokuta North local Government, Nigeria were evaluated. Fish samples were purchased, differently processed (smoking, salting, freezing) and analyzed for the presence of fungi. Microbial loads on the gills and the skin of fish samples were examined and characterised using standard microbiological procedures. The progression of growth was also monitored within 10-day storage period. The fungi isolated from the differently processed tilapia were Aspergillus niger, Aspergillus spp, Branchysporum nigrum, Candida albican, Candida spp., Fusarium solani, Fusarium spp., Paecilomyces spp., Rhizopus stolonifer and Aspergillus 8flavus. No significant variation (p>0.05) was recorded in the fungal count of the skin during the first day of processing. However, significant variation (p<0.05) existed in the fungal count of the gill of the fish during the first day of processing. On the tenth day frozen fish skin had the highest fungal count while smoked fish skin possessed the lowest fungal count. There were significant difference (p<0.05) in the fungal count of the skin and the gill of differently processed fish samples during the storage. Similarly, significant variation (p<0.05) existed in the fungi count of the gill during the tenth day of processing.
References
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Abolagba, O.J., Igbinevbo, E.E. 2010. Microbial Load of Smoked Fish (Clarias sp) Marketed in Benin Metropolis, Nigeria. Research Journal of Fisheries and Hydrobiology, 5(2): 99-104.
Abolagba, O.J., Uwagbai, E.C 2011. A comparative analysis of the microbial load of smoke-dried fishes (Ethmalosa fimbriata and Pseudotolithus elongatus) sold in Oba and Koko markets in Edo and Delta states, Nigeria at different seasons 5(5): 544-550
Adeparusi, E. O., Afolabi, G. O., Jeff-Agboola, Y, A. 2007. Bacterial and Fungi Flora of Wild Oreochromis niloticus and Clarias gariepinus collected from Owena Reservoir, Western Nigeria. Advances in Food, 29 (2):162-166
Adesokan I. A., Ogunbanwo S. T., Odetoyinbo, B. B. 2005. Microbiological quality of selected brands of beer in Nigeria. In: the Book of Abstract of the 29th Annual Conference & General Meeting (Abeokuta 2005) on Microbes As Agents of Sustainable Development, organized by Nigerian Society for Microbiology (NSM), University of Agriculture, Abeokuta, from 6-10th November. p. 21.
Adesulu, E. A. 1997. Current status of tilapia in Nigerian aquaculture. Proceedings of the Fourth International Symposium on Tilapia Aquaculture, (K. Fitzsimmons, ed.). Orlando, USA. pp. 577-583
Agbede, S. A., Olufemi, B. E., Adeyemi, A. O. 1997. Preventive veterinary medicine: shell fish hygiene. Proceeding and abstract, 34th Annual National Congress of Nigerian Medical Association, 32-36.
Awoniyi, T. A. M., Bello-Olusoji, O. A ., Adeparusi, E.O. 2007. Microbial occurrence in pond-raised Clarias gariepinus and Oreochromis niloticus in tropical humid South West Nigeria. Advances in Food Science, 29(2): 90-93
Bagge-Ravn, D., Ng, Y., Hjelm, M., Christiansen, N.J., Johansen, C., Gram, L. 2003. The microbial ecology of processing equipment in different fish industries-analysis of the micro flora during processing and following cleaning and disinfection. International Journal of Food Microbiology. 87: 239-250.
Bloomfield, S.F. 2003. Home Hygiene: a risk approach. International Journal of Hygiene and Environmental Health. 206: 1-8.
Beuchat, L. R. 1995. Pathogenic microorganisms associated with fresh produce. Journal of Food Protection. 59: 204-216.
Chen, Y. H., Jackson, K. M., Chea, F. P., Schafftner, D. W. 2001. Quantification and variability analysis of bacterial cross contamination rates in common food service tasks. Journal of Food Protection. 64: 72-80.
De-Roever, C. 1999. Microbiological safety evaluations and recommendations on fresh produce. Food Control. 9: 321-347.
Christianah, I. Ayolabi., Fagade, O. E. 2010. Mycological Evaluation of Smoked Fish from the Retail Outlets in Ago-Iwoye, Ogun State, Nigeria. Journal of Life and Physical Science. 3(2): 65-66.
El-Sayed, A. F. 2006. Tilapia Culture CABI Publications, Wallingford, UK. 257pp.
Fagbenro, O. A. 2002. Tilapia: fish for thought. 32nd Inaugural Lecture, Federal University of Technology, Akure, Nigeria. 77pp.
Fagbenro, O. A., Jegede, T., Fasasi. O. S. 2010. Tilapia aquaculture in Nigeria. Applied Tropical Agriculture 15: 49-55.
Jay, J. M. 1992. Modern Food Microbiology. Microbiological Indicators of food safety and quality, Principles and Quality control, and microbiological criteria. New York: Van Nostrand Reinhold.
Jimoh W. A, Jabar M. B ., Adeleke M. A., Bello B. K. 2009. Diversity and microbial load of fungi isolates of the gut sections of captured and cultured Clarias gariepinus in Abeokuta South Western Nigeria. Journal of Field Aquatic Studies, Nigeria,
5: 54-60
Kirby, R. M., Bartram, B., Carr, R. 2003. Water in food production and processing-Quality and quality concerns. Food Control. 14: 283-299.
Lund, B. M., Baird-Parker, T. C., Gould, G. W. (Eds) 2000. The Microbiological Safety and Quality of Food. Vol. 1. Aspen Publishers Inc. Gaithersburg, Maryland.
Martins, A. M., 1994. Fisheries Processing: Biochemical Applications. Published by Chapman and Hall, London. pp: 1-88.
Montville, R., Chen, Y., Schaffner, D. W. 2001. Determination of bacterial cross-contamination rates from hand to food through a glove barrier. Journal of Food Protection. 64: 845-849.
Onions, A. H. S., Allsopp., Eggins H. O. W. 1981. Smiths Introduction to Industrial Mycology, Edward Arnold, London 389p
Olawale, A. K., Oluduro A. O., Famurewa O. 2005. Evaluation of microbiological and sanitary standards of canteens and eateries in Osun State Polytechnic, Iree. In: the Book of Abstract of the 29th Annual Conference & General Meeting (Abeokuta 2005) on Microbes As Agents of Sustainable Development, organized by Nigerian Society for Microbiology (NSM), UNAAB, Abeokuta, from 6-10th November. p.19.
Ogbondeminu, E. S., Adeniji, H. A. 1987. Microbial ecology of aquaculture system. Changes in population of of bacteria communitiesin a fertilized fish pond in Lake Kainji area. ECOSON 187-195pp.
Okaeme, A. N. 2006. Fish diseases; prevention and control. Paper presented at the VCN professional continuing Education Seminar, Akure, March , 2006, 1-17.
Reij, M.W., Den Aantrekker, E.D., ILSI Europe Risk Analysis in Microbiology Task Force 2004. Recontamination as a source of pathogens in processed foods. International Journal of Food Microbiology. 91:1-11.
Venugopal, V. 2002. Biosensors in fish production and quality control. Biosensors and Bioelectronics. 17: 147-157.
Vogel, B. F., Huss, H. H., Ojeniyi, B., 2001. Elucidation of Listeria monocytogenes contamination routes in cold-smoked salmon processing plants detected by DNA-based typing methods. Applied and Environmental Microbiology 67 (6): 2586-2595.
World Fish Centre (WFC) 2003. An issue for everyone. A concept paper for ‘Fish for All’ produced by World Fish Centre, Penang, Malaysia, 2-4.
