Cereal Chem 47:700 - 707.  |  VIEW ARTICLE
Survey of Corn for Aflatoxin, Zearalenone, and Ochratoxin.

O. L. Shotwell, C. W. Hesseltine, M. L. Goulden, and E. E. Vandegraft. Copyright 1970 by the American Association of Cereal Chemists, Inc. 

A total of 283 corn samples from commercial markets, including samples from all grades, from the crop year 1967, were assayed for the presence of aflatoxin, ochratoxin, and zearalenone. Samples were extracted and assayed by the procedure developed by the Food and Drug Administration for multitoxin analysis. The sensitivity limits of the analysis as carried out were 1 to 3 p.p.b. aflatoxin B-1 and G-1, 50 p.p.b. ochratoxin A, and 200 p.p.b. zearalenone. Six of the samples---five in sample grade (SG) and one in grade 3--- contained aflatoxin in low levels. One SG corn contained ochratoxin A. Zearalenone was identified in two SG samples, and F-3, an estrogenic factor related to zearalenone, could also be present.