Detection of Aspergillus section Flavi and aflatoxins in locally | 7591
Virology & Mycology

Virology & Mycology
Open Access

ISSN: 2161-0517

+44 1223 790975

Detection of Aspergillus section Flavi and aflatoxins in locally formulated fish feeds from south-western Nigeria

International Conference on Mycology & Mushrooms

September 12-14, 2016 San Antonio, USA

Olorunfemi Momodu Foluke, Odebode Adegboyega C, Ezekiel Chibundu N, Sulyok Michael and Krska Rudolf

University of Ibadan, Nigeria
Nigerian Stored Products Research Institute, Nigeria
Babcock University, Nigeria
University of Natural Resources and Life Sciences Vienna, Austria

Scientific Tracks Abstracts: Virol Mycol

Abstract :

Aflatoxins are potent carcinogenic secondary metabolites produced by the Aspergillus spp. Aspergillus section Flavi (ASF) is a group of molds associated with aflatoxin production. They are responsible for aflatoxicosis in humans and animals through the feed-animal-food-human chain. Detection of ASF and aflatoxins were carried out on 94 randomly collected fish feed samples from different fish farms in south-western Nigeria. ASF were detected in all samples with 1873 ASF isolated. Aspergillus flavus, Aspergillus parasiticus, unnamed taxon and Aspergillus tamari isolated was 1806 (96.40%), 12 (0.64%), 3 (0.16%) and 52 (2.78%) respectively. Aflatoxin B1 was detected in 92% of samples followed by Aflatoxin G1 (85%), Aflatoxin B2 (81%), Aflatoxin M1 (75%) and Aflatoxin G2 (36%). Highest aflatoxin concentration was at 550.8 �?¼g per kg for aflatoxin B1 while highest total aflatoxin concentration recorded was 826.9761 �?¼g per kg. Percentage of samples having total aflatoxin concentration higher than the Maximum Allowable Limit (MAL) in animal feeds as recommended by USFDA (20 �?¼g/kg) was 79.79%. Considering the high incidence of ASF and aflatoxin contamination of sampled fish feeds, the fish industries in southwestern Nigeria may be at risk of economic losses due to aflatoxicosis in the fish species.

Biography :

Olorunfemi Momodu Foluke is currently a PhD student at the University of Ibadan in Nigeria. Her research interests lies in the study of moulds, mycotoxin research, foods and feeds safety and finding methods for extending shelf life of agricultural produce. She is an awardee of Organization for Women in Science for the Developing World (OWSD) in Italy and has published 9 papers. Currently she is on a Research Visit to Chemistry Department of Rhodes University, South Africa, where she is developing tools to help in ameliorating multi-mycotoxins in fish feeds.