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Correlation of formation of wax esters and aflatoxins byAspergillus Flavus link

Beziehung zwischen der Bildung der Wachsester und Aflatoxinen durchAspergillus flavus

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Zusammenfassung

Wachsester volnAspergillus flavus enthalten Palmitinsäure, Ölsäure und Oleylalkohole als Hauptkomponenten. Das Maximum der Aufnahme von markiertem (1—14C)-acetat in Wachsester wurde vom 2. Tage ab des Wachstums beobachtet (ungefähr 19%), während der Einbau in die Aflatoxine vom 10. Tage ab beobachtet wurde, wenn der Einbau in die Wachsester beträchtlich abnimmt. Die Wachsesterhydrolysate enthalten Vorstufen von Aflatoxin B1. Ein Neuntel der Radioaktivität des Aflatoxins ist auf die Ölsäure zurückzuführen. Es wird daher postuliert, daß der Pilz die Wachsester in die Aflatoxine metaboliert.

Summary

Wax esters ofAspergillus flavus ink (DU/KR 79-D) contained palmitic acid, oleic acid and oleyl alcohol as the major components. Maximum incorporation of labelled (1—14C)-acetate into wax esters was observed on the second day of growth (about 19%), while in aflatoxins it was observed on the tenth day, when incorporation into wax esters had decreased considerably. The wax ester hydrolysate contained precursors of aflatoxin B1. One ninth of the radioactivity in aflatoxin was shown to be due to oleic acid. It is postulated that the fungus metabolises wax esters into aflatoxins.

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Authors and Affiliations

  1. Department of Biochemistry Vallabhbhai Patel Chest Institute, University of Delhi, Delhi-7, India

    K. K. Maggon, S. Gopal,  T. A. Venkitasubramanian & V. V. S. Murti

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  1. K. K. Maggon
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  2. S. Gopal
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  3. T. A. Venkitasubramanian
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  4. V. V. S. Murti
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Maggon, K.K., Gopal, S., Venkitasubramanian, T.A. et al. Correlation of formation of wax esters and aflatoxins byAspergillus Flavus link. Z Lebensm Unters Forch 156, 72–76 (1974). https://doi.org/10.1007/BF02425624

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  • DOI: https://doi.org/10.1007/BF02425624

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