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Incidence and levels of fumonisin contamination in Colombian corn and corn products

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Abstract

A survey was conducted to determine the levels of fumonisins B1 and B2 in corn and corn-based products available in Colombia for human and animal consumption. A total of 120 samples were analyzed by acetonitrile-water extraction, cleanup with a strong-anion-exchange column, and liquid chromatography with o-phthaldialdehyde-2-mercaptoethanol derivatization and fluorescence detection. The samples of corn and corn-based products for animal intake were taken at different feed manufacturing plants, whereas the samples used for human foods where purchased from local retail stores. The number of positive samples for fumonisin B1 was 20.0% higher in corn and corn-based products for animal intake (75.0%) than in corn and corn-based products for human consumption (55.0%). The levels of fumonisin B1 were also higher in corn and corn-based products for animal intake (mean = 694 μg/kg; range = 32–2964 μg/kg), than in corn and corn-based products for human intake (mean = 218 μg/kg; range = 24–2170 μg/ kg). The incidence and levels of fumonisin B2 were lower than those for fumonisin B1. Corn and corn-based products for animal consumption had an incidence of fumonisin B2 of 58.3%, with a mean value of 283 μg/kg, and a range of 44–987 μg/kg. The incidence of fumonisin B2 in corn-based products for human intake was 35.0%, with a mean value of 118 μg/kg and a range of 21–833 μg/kg. The highest incidence and levels of fumonisins were found in samples of hominy feed, with concentrations ranging from 86 to 2964 μg/kg fumonisin B1 and 57 to 987 μg/kg fumonisin B2.

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Authors and Affiliations

  1. Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Apartado Aéreo, 76948, Santafé de Bogota, Colombia

    Diaz GJ

  2. Joven Investigadora, convenio Colciencias-Universidad Nacional de Colombia No.035–97, Santafé de Bogota

    Perilla NS

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  1. Perilla NS
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  2. Diaz GJ
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Perilla, N., Diaz, G. Incidence and levels of fumonisin contamination in Colombian corn and corn products. Mycotox Res 14, 74–82 (1998). https://doi.org/10.1007/BF02945096

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  • DOI: https://doi.org/10.1007/BF02945096

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