SURVEY OF DEOXYNIVALENOL IN US 1993 WHEAT AND BARLEY CROPS BY ENZYME-LINKED-IMMUNOSORBENT-ASSAY

Wheat and barley from the 1993 crop year were analyzed for deoxynivale nol (DON). A total of 630 samples were collected by the Federal Grain Inspection Service in 25 states and analyzed using a commercially avai lable, direct competitive, enzyme-linked immunosorbent assay. The limi t of determination was about 0.5 mu g/g. DON contamination in the 483 wheat samples averaged 2.0 mu g/g and ranged from <0.5 to 18 mu g/g. D ON contamination in the 147 barley samples averaged 4.2 mu g/g and ran ged from <0.5 to 26 mu g/g. About 40% of the wheat samples and 57% of the barley samples contained DON levels that were greater than the U.S . Food and Drug Administration 1982 advisory level of 2 mu g/g for DON In wheat designated for milling (human consumption).