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    First report of aflatoxin in dried yam chips in Benin

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    Date
    2001-09
    Author
    Bassa, S.
    Mestres, C.
    Champiat, D.
    Hell, K.
    Vernier, P.
    Cardwell, K.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Dried yam (Dioscorea spp.) chips are widely consumed in Bénin but are often attacked by molds. Invasion of food by Aspergillus flavus may lead to aflatoxin contamination. We report here the result of a survey on the sanitary quality of dried yam chips in Bénin. During July and August 2000, 50 dried yam chips samples were collected from different points in the marketing chain; 10 samples were collected from each of 5 stages: producers, wholesalers, retailers, dried yam-based food sellers and consumers. Aflatoxin content was assayed by the bio-luminescence method (1) after methanol/water extraction. Aflatoxins were detected in all dried yam chip samples, with levels ranging from 2.2 to 200 ppb and a mean value of 14 ppb. An aflatoxin concentration higher than the European Union's maximum residue limit (MRL) of 4 ppb was found in 98% of the samples (N = 50), while 6% had an aflatoxin concentration higher than the World Health Organization's MRL of 20 ppb. Molds were analyzed from two samples, each with aflatoxin levels around 5 ppb, on colony unit medium specific for A. flavus (2). Aspergillus spp. were detected in the inner part of dried yam chips of both samples, with a mean level of 9,000 CFU/g. Fusarium colonies were also present but were not identified to species.
    https://dx.doi.org/10.1094/PDIS.2001.85.9.1032A
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4113
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1094/PDIS.2001.85.9.1032A
    IITA Subjects
    Aflatoxin; Plant Diseases; Yam
    Agrovoc Terms
    Yams; Dioscorea; Aflatoxins; Aspergillus Flavus
    Regions
    Africa; West Africa
    Countries
    Benin
    Journals
    Plant Disease
    Collections
    • Journal and Journal Articles4835
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