Sterols and fatty acids of aflatoxin and non-aflatoxin producing isolates of Aspergillus |
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| Authors: | George W. Rambo George A. Bean |
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| Affiliation: | Department of Botany and Plant Pathology, Purdue University, Lafayette, IN 47907, U.S.A.;Department of Botany, University of Maryland, College Park, MD 20742, U.S.A. |
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| Abstract: | The fatty acids and sterols present in 5 isolates of Aspergillus flavus and 3 isolates of A. parasiticus were determined; 2 isolates within each species were aflatoxin producers. The 4 major fatty acids were 16:0, 18:0, 18:1 and 18:2 with a trace of 15:0 in one isolate and traces of 17:0 in 3 other isolates. Cholesterol, ergosterol and 5, 7-ergostadienol were present in all isolates; the 5 isolates of A. flavus could be identified on the basis of retention times of minor sterols present. There was no correlation of total lipids, fatty acids or sterols with the production of aflatoxins. Water soluble complexes of sterols were not detected. |
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| Keywords: | Ascomycetoe fungi aflatoxins sterols fatty acids lipids. |
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