Abstract
ABSTRACTAflatoxins are a major class of fungal toxins that have food safety importance due to their economic and health impacts. This pilot aflatoxin exposure biomonitoring study on 84 individuals was conducted in a rural (Ilumafon) and a semi-urban community (Ilishan Remo) of Ogun state, Nigeria, to compare aflatoxin exposures among the two population cohorts. First morning urine samples were obtained from the participants, and the urinary aflatoxin M1 (AFM1) levels were measured by a quantitative Helica Biosystems Inc. ELISA kit assay. About 99% (83 out of 84) of the urine samples had detectable AFM1 levels in the range of 0.06 to 0.51 ng mL−1 (median: 0.27 ng mL−1). The mean urinary AFM1 levels were significantly (p = 0.001) higher in the semi-urban population (0.31 ± 0.09 ng mL−1) compared to the rural population (0.24 ± 0.07 ng mL−1). There were, however, no significant differences in mean urinary AFM1 levels of males and females, and among children, adolescents and adults. This study indicates high aflatoxin exposure to the extent of public health concerns in the studied populations. Thus, more efforts are required for aflatoxin exposure monitoring and control in high-risk regions.
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