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Appl Environ Microbiol. 1974 February; 27(2): 337-339
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

Toxic Metabolite Produced by Aspergillus wentii

^a Department of Food Science, University of Georgia, Athens, Georgia 30602

ABSTRACT

Mycelial extracts of an Aspergillus wentii strain grown on yeast-extract sucrose medium and initially isolated from country-cured ham were highly toxic when inoculated into chicken embryos or fed to mice. Moldy corn and rice were less toxic when fed to mice. Water extracts of moldy corn or rice or culture filtrates from yeast-extract sucrose medium were not toxic. Purification by thin-layer chromatography followed by crystallization yielded orange-red crystals that showed high toxicity and had a melting point of 285 to 286 C. Chloroform solutions of the crystals had absorption maxima at 270, 295, and 452 nm. The smallest amount of this component necessary to have zero hatchability of fertile eggs was 50 µg/egg.

¹ Present address: Nutrition and Food Science Dept., Utah State University, Logan, Utah 84322.

² Present address: 1 Thon St., Tel Aviv, Israel.