Survey of corn from different regions for aflatoxin, ochratoxin, and zearalenone
1971
Shotwell, O.L. | Hesseltine, C.W. | Vandegraft, E.E. | Goulden, M.L.
The assay of 293 corn samples including all grades of export cargo corn from 10 ports, for aflatoxin, zearalenone and ochratoxin, is reported. 8 contained <6 to 25 parts/billion aflatoxin B1 and 1 of these contained C1 as well as B1. One sample was in SG, 3 were in grade US No. 4, 3 in US No. 3 and 1 in US No. 2. Aspergillus flavus was isolated from 7 of the 8 samples and Asp. parasiticus was isolated from the remaining positive sample. 3 samples contained ochratoxin A (83-166 parts/billion), 2 in grade US No. 4, and 1 in US No. 3. Zearalenone (450-750 parts/billion) was present in 5 samples - 1 in SG, 1 in US No. 4, and 3 in US No. 3. [See also FSTA (1971) 3 7M802.]
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