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Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria

Authors: Ezekiel Chibundu , Iyeneh Udom, Jens Frisvad, Modupeade Adetunji, Jos , Rob Samson, Olusegun Atanda, May Agi-otto, Olumide Abimbola Onashile

Publication Type: Journal article

Journal: Mycology

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Abstract

Sixteen fonio millet and 17 sesame samples were analysed for incidence of moulds, especially aflatoxigenic Aspergillus species, in order to determine the safety of both crops to consumers, and to correlate aflatoxin levels in the crops with levels produced by toxigenic isolates on laboratory medium. Diverse moulds including Alternaria, Aspergillus, Cercospora, Fusarium, Mucor, Penicillium, Rhizopus and Trichoderma were isolated. Aspergillus was predominantly present in both crops (46–48%), and amongst the potentially aflatoxigenic Aspergillus species, A. flavus recorded the highest incidence (68% in fonio millet; 86% in sesame kernels). All A. parvisclerotigenus isolates produced B and G aflatoxins in culture while B aflatoxins were produced by only 39% and 20% of A. flavus strains isolated from the fonio millet and sesame kernels, respectively. Aflatoxin concentrations in fonio millet correlated inversely (r = ?0.55; p = 0.02) with aflatoxin levels produced by toxigenic isolates on laboratory medium, but no correlation was observed in the case of the sesame samples. Both crops, especially sesame, may not be suitable substrates for aflatoxin biosynthesis. This is the first report on A. parvisclerotigenus in sesame.

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Ezekiel,C. Iyeneh,E.U Jens,C.F Modupeade,C.A Jos,H. Rob,A.S Olusegun,O.A May,C.A Olumide,A.O . (2014). Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria, 5 (), 16-16.

Ezekiel,C. Iyeneh,E.U Jens,C.F Modupeade,C.A Jos,H. Rob,A.S Olusegun,O.A May,C.A Olumide,A.O . "Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria" 5, no (), (2014): 16-16.

Ezekiel,C. and Iyeneh,E.U and Jens,C.F and Modupeade,C.A and Jos,H. and Rob,A.S and Olusegun,O.A and May,C.A and Olumide,A.O and . (2014). Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria, 5 (), pp16-16.

EzekielC, IyenehEU, JensCF, ModupeadeCA, JosH, RobAS, OlusegunOA, MayCA, OlumideAO, . Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria. 2014, 5 ():16-16.

Ezekiel,Chibundu , Iyeneh,E Udom, Jens,C Frisvad, Modupeade,C Adetunji, Jos,Houbraken , Rob,A Samson, Olusegun,O Atanda, May,Chimka Agi-otto, and Olumide,Abimbola Onashile . "Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria", 5 . (2014) : 16-16.

E.Chibundu I.E Udom J.C Frisvad M.C Adetunji J.Houbraken R.A Samson O.O Atanda M.Chimka Agi-otto & O.Abimbola Onashile , "Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria" vol.5, no., pp. 16-16, 2014.

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