A total of 176 isolates of the genus Aspergillus were screened for the
ir ability to produce ochratoxin A in yeast extract-sucrose broth and
on moistened corn. Besides being produced by A. ochraceus and A. allia
ceus, ochratoxin A was produced by one isolate of A. fumigatus and one
of A. versicolor, species not previously reported to produce this myc
otoxin.