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African Journal of Food, Agriculture, Nutrition and Development
Rural Outreach Program
ISSN: 1684-5358
EISSN: 1684-5374
Vol. 16, No. 3, 2016, pp. 1054-1065
Bioline Code: nd16038
Full paper language: English
Document type: Study
Document available free of charge

African Journal of Food, Agriculture, Nutrition and Development, Vol. 16, No. 3, 2016, pp. 1054-1065

 en AFLATOXINS AND FUMONISIN CONTAMINATION OF MARKETED MAIZE, MAIZE BRAN AND MAIZE USED AS ANIMAL FEED IN NORTHERN TANZANIA
Nyangi, C; JMugula, K; Beed, F; Boni, S; Koyano, E & Sulyok, M

Abstract

The objective of this study was to investigate the occurrence of total aflatoxin and total fumonisin in maize and maize-based products in Babati, northern Tanzania. A total of 160 samples were collected in 2013-14. Quantification for total aflatoxin and fumonisin was done using enzyme-linked immunosorbent assay (Reveal AccuScan® Neogen, USA) and the results were confirmed using Liquid Chromatography Tandem Mass Spectrometer. Aflatoxin was detected in 32% of maize samples (mean 3.4 ± 0.3 μg/kg; range 2.1–16.2 μg/kg) and fumonisin in 39% of samples (mean 5.6 ± 1.40 mg/kg; range 0.4–62.0 mg/kg). Among marketed products, maize bran (used for animal feed) was the most contaminated (2.4 μg/kg aflatoxin and 1 mg/kg fumonisin), followed by whole maize in market stalls (1.9 μg/kg aflatoxin and 0.4 mg/kg fumonisin) and then maize flour (1.4 μg/kg aflatoxin and 0.3 mg/kg fumonisin). Un-marketed maize sorted out by farmers as “bad” and intended for animal feeding was the most contaminated (overall mean aflatoxin and fumonisin levels of 1.7 μg/kg and 7.4 mg/kg, respectively). The results indicate that levels of aflatoxin and fumonisin contamination in marketed maize were within tolerable limits.

Keywords
Tanzania; aflatoxins; fumonisins; food safety; maize; market; processors; animal feed

 
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