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    Aflatoxin and fumonisin contamination of cassava products and maize grain from markets in Tanzania and republic of the Congo

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    S09ArtManjulaAflatoxinInthomDev.PDF (575.3Kb)
    Date
    2009
    Author
    Manjula, K.
    Hell, K.
    Fandohan, P.
    Abass, A.
    Bandyopadhyay, Ranajit
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Food safety and compliance with international standards is a major challenging to achieve food security in sub-Saharan Africa. The present study evaluated the occurrence of Aspergillus flavus, Fusarium spp., and related fungi, and resultant aflatoxins and fumonsins in dried cassava and maize samples from various markets and villages in Tanzania and Congo. The relationship between mycotoxins and length of storage period was also elucidated. The levels of aflatoxin B1varied from 0.3 to 4.4ppb in cassava chips and flour, and from 0.1 to 13.0ppb in stored cassava samples, with relatively high levels of contamination found in cassava stored for 4 months. Maize kernels showed high aflatoxin concentrations, with means ranging from 0.04 to 120ppb. On maize, the dominant mycoflora were Aspergillus spp. (3.3%–39.5%) and Fusarium spp. (42%–70.5%), potentially causing serious health risks to consumers of these products. Low levels of fumonisin ranging from 0 to 0.07ppm were found in cassava chips and flour with mean values ranging from 0.001 to 0.006ppm. Maize recorded relatively higher fumonisin levels ranging from 0.02 to 9.4ppm, indicating that maize is potentially a more serious risk to consumer health than cassava. This needs to be taken into account when developing strategies to reduce toxin contamination and improve health of populations. Aflatoxin in maize is a chronic problem in the two countries surveyed, limiting marketability and income. Nevertheless the collected cassava samples are also prone to aflatoxin contamination, but not fumonisin contamination.
    https://dx.doi.org/10.1080/15569540802462214
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2505
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1080/15569540802462214
    IITA Subjects
    Aflatoxin; Plant Production; Grain Legumes; Maize; Cassava; Markets; Handling, Transport, Storage And Protection Of Agricultural Products
    Agrovoc Terms
    Aflatoxins; Fumonisin; A. Flavus; Fusarium Spp.; Cassava Maize
    Regions
    Africa; East Africa; Central Africa
    Countries
    Tanzania; Congo
    Journals
    Toxin Reviews
    Collections
    • Journal and Journal Articles5283
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