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Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria

Authors: Ezekiel Chibundu , Funmi , Fapohunda Stephen , Olurunfemi F, Kponi B T

Publication Type: Journal article

Journal: Internet Journal Of Food Safety

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Abstract

Twenty-five snack samples made separately from corn, groundnut, nuts (coconut, tiger nut and walnut) and wheat were evaluated for the incidence of aflatoxigenic moulds and aflatoxins. The snacks were collected from street vendors in five locations within Lagos, Nigeria. Only 9 out of the 25 snacks belonging to the corn- and groundnut-based categories yielded isolates of Aspergillus flavus and A. tamarii. A. flavus was significantly (p<0>90%) than A. tamarii in both snack groups. About 36% of the Aspergillus isolates produced aflatoxin in neutral red desiccated coconut agar medium. Approximately 81% of the toxigenic A. flavus from groundnut-based snacks produced more aflatoxin than those from corn-based snacks. Aflatoxins were detected in 68% (17/25) of the snacks at total aflatoxin (TA) concentrations of 0–50?g/kg. Only aflatoxin B1 (AFB1), AFB2 and AFG1 were detected in the snacks. AFB1 was the most prevalent aflatoxin in all snacks. With exception of nut-based snacks, all other snacks were contaminated with TA concentrations at levels exceeding the maximum allowable limits (MAL) for TA in foods (15? g/kg) as recommended by the National Agency for Food and Drug Administration and Control (NAFDAC).

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Ezekiel,C. Funmi,K. Fapohunda,S. Olurunfemi,M.F Kponi,B.T . (2014). Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria, 14 (), 88-88.

Ezekiel,C. Funmi,K. Fapohunda,S. Olurunfemi,M.F Kponi,B.T . "Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria" 14, no (), (2014): 88-88.

Ezekiel,C. and Funmi,K. and Fapohunda,S. and Olurunfemi,M.F and Kponi,B.T and . (2014). Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria, 14 (), pp88-88.

EzekielC, FunmiK, FapohundaS, OlurunfemiMF, KponiBT, . Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria. 2014, 14 ():88-88.

Ezekiel,Chibundu , Funmi,Kayode , Fapohunda,Stephen , Olurunfemi,M F, and Kponi,B T . "Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria", 14 . (2014) : 88-88.

E.Chibundu F.Kayode F.Stephen O.M F & K.B T , "Aflatoxigenic moulds and aflatoxins in street-vended snacks in Lagos, Nigeria" vol.14, no., pp. 88-88, 2014.

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