Mycotoxins in Swedish grains and mixed feeds

Approximately 68 samples of grains and mixed feeds associated with disturbances in animal breeding from 1977 and 1978 were analyzed for ochratoxin A, zearalenone, aflatoxin, and 9 trichothecenes. Six contained ochratoxin A (40-1690 ppb, average of 750 ppb) and 2 contained zearalenone (1200 and less than 100 ppb). Aflatoxin was detected in a sample from formic acid-treated oats with a level of 2600 ppb at the surface of the stored grain. Deoxynivalenol was detected in two samples. One contained approximately 2 ppm and was confirmed by gas-liquid chromatography mass spectrometry (GLC/MS).