@article{jaem2016432,
author={{Amri, Ezekiel and Lenoi, Saning¡¯o},
title={Aflatoxin and Fumonisin Contamination of Sun-Dried Sweet Potato (<i>Ipomoea batatas</i> L.) Chips in Kahama District, Tanzania},
journal={Journal of Applied & Environmental Microbiology},
volume={4},
number={3},
pages={55--62},
year={2016},
url={http://pubs.sciepub.com/jaem/4/3/2},
issn={2373-6712},
abstract={Sweet potato (<i>Ipomoea batatas</i> L.) is one of the major root and tuber crops of the tropics which can be achieved under a wide range of agro-climates and farming systems. The study was undertaken to determine aflatoxins and fumonisins occurrence in sun-dried sweet potato chips sampled from households in Kahama district in Shinyanga region, Tanzania. A total of 80 sun - dried sweet potato samples were evaluated for aflatoxins (AFB1, AFB2, 1 and 2) and fumonisins (FB1 and FB2) contaminations. High-performance liquid chromatography (HPLC) with fluorescence detection<i> </i>method was used for analysis. The overall percentage of samples which tested positive for aflatoxins was 36% with contamination in ranges from 10.49 ¦Ìg/kg) to 75.12 ¦Ìg/kg. The aflatoxin B<SUB>1</SUB> (AFBI) contamination was the most prevalent with concentration of 21.23 ¦Ìg/kg followed by aflatoxin G<SUB>1</SUB> (AFGI) with concentration of 10.38 ¦Ìg/kg. Fumonisin B<SUB>1</SUB> (FB1) was the only type of fumonisin detected and had 97.5% of samples contaminated with values ranging from 29.34 ¨C 628.78 mg/kg (mean 44.69 mg/kg). Fumonisin B<SUB>1</SUB> was found to be significantly (p &lt; 0.01) correlated with moisture content. The study has revealed that samples had aflatoxins and fumonisins contamination levels above acceptable levels by East Africa standards and Codex Alimentarius Commission, a joint FAO/WHO Food Standards Program. Efforts in improving post-harvest methods by addressing handling and processing methods is of prime importance in order to minimize risk of aflatoxins and fumonisins contamination of sweet potato chips.},
doi={10.12691/jaem-4-3-2}
publisher={Science and Education Publishing}
}