[Isolation of fusarium and extraction of its toxin from buckwheat grown in an area with "endemic breast enlargement" disease].

Fusarium was isolated and its toxin was extracted from the buckwheat grown in an epidemic area with "endemic breast enlargement" disease. The toxin was determined with thin layer chromatography and mass spectrography. Results showed there were more than four kinds of mould, including fusarium, isolated from buckwheat grown in the endemic disease area. All the buckwheat grown in the area were infected with mould and 34% with fusarium. Three kinds of toxin were extracted from the buckwheat, with rates of flow of 0.23, 0.47 and 0.90, respectively, in thin layer chromatography. And, zearalenone was extracted from the buckwheat and identified by mass spectrography.