Cargando…

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

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....

Descripción completa

Detalles Bibliográficos
Autores principales: Ezekiel, C.N., Udom, I.E., Frisvad, J.C., Adetunji, M.C., Houbraken, J., Fapohunda, S.O., Samson, R.A., Atanda, O.O., Agi-Otto, M.C., Onashile, O.A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3979445/
https://www.ncbi.nlm.nih.gov/pubmed/24772370
http://dx.doi.org/10.1080/21501203.2014.889769
_version_ 1782310729420898304
author Ezekiel, C.N.
Udom, I.E.
Frisvad, J.C.
Adetunji, M.C.
Houbraken, J.
Fapohunda, S.O.
Samson, R.A.
Atanda, O.O.
Agi-Otto, M.C.
Onashile, O.A.
author_facet Ezekiel, C.N.
Udom, I.E.
Frisvad, J.C.
Adetunji, M.C.
Houbraken, J.
Fapohunda, S.O.
Samson, R.A.
Atanda, O.O.
Agi-Otto, M.C.
Onashile, O.A.
author_sort Ezekiel, C.N.
collection PubMed
description 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.
format Online
Article
Text
id pubmed-3979445
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Taylor & Francis
record_format MEDLINE/PubMed
spelling pubmed-39794452014-04-25 Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria Ezekiel, C.N. Udom, I.E. Frisvad, J.C. Adetunji, M.C. Houbraken, J. Fapohunda, S.O. Samson, R.A. Atanda, O.O. Agi-Otto, M.C. Onashile, O.A. Mycology Research Article 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. Taylor & Francis 2014-03-25 2014-03 /pmc/articles/PMC3979445/ /pubmed/24772370 http://dx.doi.org/10.1080/21501203.2014.889769 Text en © The Author(s). Published by Taylor & Francis. http://www.informaworld.com/mpp/uploads/iopenaccess_tcs.pdf This is an open access article distributed under the Supplemental Terms and Conditions for iOpenAccess articles published in Taylor & Francis journals (http://www.informaworld.com/mpp/uploads/iopenaccess_tcs.pdf) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This is an open-access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
spellingShingle Research Article
Ezekiel, C.N.
Udom, I.E.
Frisvad, J.C.
Adetunji, M.C.
Houbraken, J.
Fapohunda, S.O.
Samson, R.A.
Atanda, O.O.
Agi-Otto, M.C.
Onashile, O.A.
Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title_full Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title_fullStr Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title_full_unstemmed Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title_short Assessment of aflatoxigenic Aspergillus and other fungi in millet and sesame from Plateau State, Nigeria
title_sort assessment of aflatoxigenic aspergillus and other fungi in millet and sesame from plateau state, nigeria
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3979445/
https://www.ncbi.nlm.nih.gov/pubmed/24772370
http://dx.doi.org/10.1080/21501203.2014.889769
work_keys_str_mv AT ezekielcn assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT udomie assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT frisvadjc assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT adetunjimc assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT houbrakenj assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT fapohundaso assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT samsonra assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT atandaoo assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT agiottomc assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria
AT onashileoa assessmentofaflatoxigenicaspergillusandotherfungiinmilletandsesamefromplateaustatenigeria