Abstract: Disclosed is a method for separating mycotoxin-contaminated grains, kernels, seeds and nuts, from uncontaminated whole grain seeds, whole or split kernel nuts and seeds to obtain a substantially uncontaminated supply source of these foods. The separate contaminated source can be further processed to lower the mycotoxin contamination. The process involves the separation of the mycotoxin or aflatoxin-containing materials by floating the aflatoxin-contaminated foods in a liquid having a specific gravity of from about 0.9 to about 1.2. A highly preferred process uses dynamic flotation.