Spatial and temporal variations in contamination of mycotoxins in sub-humid, semi-arid areas of Eastern Central Tanzania

摘要

Studies were conducted to determine the incidences and levels of mycotoxin contamination in household stored maize and groundnuts in Kilosa District, Tanzania. Four villages were chosen for sampling. Seventy-two samples were collected from four villages in 2010, and then tested using a high-performance liquid chromatography method. Levels of Fumonisin B, ranged from 63.26 to 213.15 p.g/kg in all collected maize samples, while levels of aflatoxin B, ranged from 72.97 to 195.17 ug/kg in all collected groundnut samples. Significant differences in levels of fumonisins were observed over time (p < 0.0001) but not among villages (p < 0.3209). Aflatoxin levels differed significantly among villages (p < 0.0491) and over time (p < 0.0001). The association between altitude and the level of aflatoxin contaminations was also significant. This study indicates that stored maize and groundnuts were more prone to mycotoxin contamination.Mycot