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Appl. Environ. Microbiol., Dec 1996, 4461-4464, Vol 62, No. 12
Copyright © 1996, American Society for Microbiology

Ochratoxin production by Aspergillus species

J Varga, E Kevei, E Rinyu, J Teren and Z Kozakiewicz
Department of Microbiology, Attila Jozsef University, Szeged, Hungary. jvarga@bio.u-szeged.hu

Ochratoxin production was tested in 172 strains representing species in sections Fumigati, Circumdati, Candidi, and Wentii of the genus Aspergillus by an immunochemical method using a monoclonal antibody preparation against ochratoxin A. Ochratoxin A was detected in Aspergillus ochraceus, A. alliaceus, A. sclerotiorum, A. sulphureus, A. albertensis, A. auricomus, and A. wentii strains. This is the first report of production of ochratoxins in the latter three species. Ochratoxin production by these species was confirmed by high- performance thin-layer chromatography and by high-performance liquid chromatography. The chemical methods also indicated the production of ochratoxin B by all of the Aspergillus strains mentioned above.

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