Figure 5.

Overall aflatoxin B₁ contamination of post-harvest stored maize grain treated with a mixture of a non-toxigenic and a toxigenic strain of A. flavus in non-GM and GM maize cultivars taking into account the parameters of water availability (0.98, 0.95), time of incubation (10, 20 days), and type of maize cultivar (non-GM vs. GM). The grain was inoculated with two different Brazilian or NRRL type toxigenic strains (AFL⁺ or AFLe⁺) and the non-toxigenic Brazilian strain AFL4⁻ in a 50:50 inoculum ratio. Different letters indicate a significant difference (p < 0.05) between the strains of the same maize type. The values of p show differences in overall AFB₁ content comparing GM and non-GM maize at 5% significance. Bars represent mean ± SE.