Clinical Microbiology: Open Access

Detection of diverse fungi metabolites in fish feeds from Nigeria

7^th Euro Global Summit on Clinical Microbiology and Mycotoxins

February 27-28, 2017 Amsterdam, Netherlands

Olorunfemi Momodu Foluke, Adekoya Ifeoluwa O, Njobeh Patrick B and Odebode Adegboyega C

University of Ibadan, Nigeria
Nigerian Stored Products Research Institute, Nigeria
University of Johannesburg, South Africa

Posters & Accepted Abstracts: Clin Microbiol

Abstract:

Fish feed being an indispensable requirement in fish farming is prone to contamination from diverse range of compounds such as pesticides, microorganisms and their metabolites because it is made up of several ingredients from both animal and plant sources. In this study, the contamination level of locally formulated fish feeds from different fish farms in Nigeria was determined. 94 fish feed samples were collected from warehouses in six states within South-western, Nigeria namely; Lagos, Ogun, Oyo, Osun, Ondo and Ekiti state. The spectrum of fungi metabolites including mycotoxins in the feeds was assessed using a Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS). 84 metabolites from diverse fungi were found in the feeds. Aflatoxins were detected in 97.9% of the feeds while fumonisins were quantified in 88.3% of the samples and deoxynivalenol in 87.2% of the feeds. Aflatoxin B1 was the most prevalent aflatoxin occurring at concentrations ranging from 0.70 μg/kg-550.78 μg/kg while fumonisin B1 was the most occurring fumonisin found at levels up to 6097.90 μg/kg. Enniatins {A, A1, B, B1}, beauvericin, skyrim, equisetin, aurofusarin, moniliformin, curvularin, emodin and sterigmatocystin which are new emerging mycotoxins were found co-occurring with major mycotoxins at a concentration as high as 429.35 μg/kg for skyrin. Considering the array and levels of fungi metabolites found in the feeds including those with known toxicities and newly emerging ones, this is a risk posed to the fish industries in Nigeria. This is the first report of multi-microbial metabolite contaminations in fish feeds from Nigeria.

Biography :

Email: mfolorunfemi@gmail.com