Abstract
Aflatoxins are highly toxic carcinogens produced by several species in Aspergillus section Flavi. Strains of A. flavus that do not produce aflatoxins, called atoxigenic strains, have been used commercially in North America as tools for limiting aflatoxin contamination. A similar aflatoxi...
Donner, M.
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Atehnkeng, J.
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Sikora, R.A.
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Bandyopadhyay, Ranajit
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Cotty, P.J.
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[Molecular characterization of atoxigenic strains for biological control of aflatoxins in Nigeria]
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Molecular characterization of atoxigenic strains for biological control of aflatoxins in Nigeria
Aspergillus section Flavi have been implicated as causal agents of aflatoxin contamination in Africa. However, Aspergillus populations associated with aflatoxin contamination in Zambia have not been adequately detailed. Most of Zambia's arable land is non-cultivated and Aspergillus communities in...
Kachapulula, P.W.
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Akello, J.
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Bandyopadhyay, Ranajit
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Cotty, P.J.
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[Aspergillus section Flavi community structure in Zambia influences aflatoxin contamination of maize and groundnut]
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Aspergillus section Flavi community structure in Zambia influences aflatoxin contamination of maize and groundnut
Aflatoxin contamination of crops is frequent in warm regions across the globe, including large areas in sub-Saharan Africa. Crop contamination with these dangerous toxins transcends health, food security, and trade sectors. It cuts across the value chain, affecting farmers, traders, markets, and ...
Bandyopadhyay, Ranajit
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Ortega-Beltran, A.
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Akande, A.
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Mutegi, C.
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Atehnkeng, J.
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Kaptoge, L.
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Senghor, A.L.
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Adhikari, B.N.
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Cotty, P.J.
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[Biological control of aflatoxins in Africa: current status and potential challenges in the face of climate change]
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Biological control of aflatoxins in Africa: current status and potential challenges in the face of climate change
Aflatoxin contamination in maize and groundnut is perennial in Ghana with substantial health and economic burden on the population. The present study examined for the first time the prevalence of aflatoxin contamination in maize and groundnut in major producing regions across three agroecological...
Agbetiameh, D.
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Ortega-Beltran, A.
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Awuah, R.T.
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Atehnkeng, J.
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Cotty, P.J.
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Bandyopadhyay, Ranajit
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[Prevalence of aflatoxin contamination in maize and groundnut in Ghana: population structure, distribution, and toxigenicity of the causal agents]
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Prevalence of aflatoxin contamination in maize and groundnut in Ghana: population structure, distribution, and toxigenicity of the causal agents
Across sub-Saharan Africa, chili peppers are fundamental ingredients of many traditional dishes. However, chili peppers may contain unsafe aflatoxin concentrations produced by Aspergillus section Flavi fungi. Aflatoxin levels were determined in chili peppers from three states in Nigeria. A total ...
Ezekiel, C.N.
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Ortega-Beltran, A.
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Oyedeji, E.O.
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Atehnkeng, J.
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Kössler, P.
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Tairu, F.
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Hoeschle-Zeledon, I.
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Karlovsky, P.
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Cotty, P.J.
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Bandyopadhyay, R.
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[Aflatoxin in chili peppers in Nigeria: extent of contamination and control using atoxigenic aspergillus flavus genotypes as biocontrol agents]
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Aflatoxin in chili peppers in Nigeria: extent of contamination and control using atoxigenic aspergillus flavus genotypes as biocontrol agents
Increasing knowledge of the deleterious health and economic impacts of aflatoxin in crop commodities has stimulated global interest in aflatoxin mitigation. Current evidence of the incidence of Aspergillus flavus isolates belonging to vegetative compatibility groups (VCGs) lacking the ability to ...
Agbetiameh, D.
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Ortega-Beltran, A.
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Awuah, R.T.
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Atehnkeng, J.
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Islam, M.S.
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Callicott, K.A.
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Cotty, P.J.
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Bandyopadhyay, R.
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[Potential of atoxigenic Aspergillus flavus vegetative compatibility groups associated with maize and groundnut in Ghana as biocontrol agents for aflatoxin management]
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Potential of atoxigenic Aspergillus flavus vegetative compatibility groups associated with maize and groundnut in Ghana as biocontrol agents for aflatoxin management
Aflatoxins are highly toxic metabolites of several Aspergillus species widely distributed throughout the environment. These toxins have adverse effects on humans and livestock at a few micrograms per kilogram (μg/kg) concentrations. Strict regulations on the concentrations of aflatoxins allowed i...
Mutegi, C.
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Cotty, P.J.
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Bandyopadhyay, Ranajit
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[Prevalence and mitigation of aflatoxins in Kenya (1960-to date)]
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Prevalence and mitigation of aflatoxins in Kenya (1960-to date)
Dried insects and fish are important sources of income and dietary protein in Zambia. Some aflatoxin-producing fungi are entomopathogenic and also colonize insects and fish after harvest and processing. Aflatoxins are carcinogenic, immune-suppressing mycotoxins that are frequent food contaminants...
Kachapulula, P.W,
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Akello, J.
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Bandyopadhyay, Ranajit
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Cotty, P.J.
,
[Aflatoxin contamination of dried insects and fish in Zambia]
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Aflatoxin contamination of dried insects and fish in Zambia
Aspergillus flavus has long been considered to be an asexual species. Although a sexual stage was recently reported for this species from in vitro studies, the amount of recombination ongoing in natural populations and the genetic distance across which meiosis occurs is largely unknown. In the cu...
Islam, M.S.
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Callicott, K.A.
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Mutegi, C.
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Bandyopadhyay, Ranajit
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Cotty, P.J.
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[Aspergillus flavus resident in Kenya: high genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution]
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Aspergillus flavus resident in Kenya: high genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution
Wild fruits are an important food and income source for many households in Zambia. Non-cultivated plants may be as susceptible as crops to aflatoxin contamination. Concentrations of aflatoxins in commonly consumed wild fruits from markets and characteristics of associated aflatoxin-producers need...
Kachapulula, P.W.
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Bandyopadhyay, R.
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Cotty, P.J.
,
[Aflatoxin contamination of non-cultivated fruits in Zambia]
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Aflatoxin contamination of non-cultivated fruits in Zambia