The relationship betweenPleurotus ostreatus andAspergillus flavus and the production of aflatoxin

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Abstract
The relationship betweenPleurotus ostreatus andAspergillus flavus in common mixed culture on various substrates was investigated. It was found thatP. ostreatus, similarly to some other higher fungi, can liquidate coloniesof A. flavus. This fungus does not produce aflatoxin and chromatographically similar compounds. On straw, corn cobs, millet and wheatA. flavus produced aflatoxin after a 3-week cultivation. A subsequent cultivation of P.ostreatus led to detoxication of straw and corn cobs but millet and wheat were not detoxicated. Cultivation of P.ostreatus in the presence of 40–100 μg of aflatoxin B1 per g substrate did not result in detoxication of the material even after 34 d but the results showed that the aflatoxin concentration decreased to about one-fourth of the added amount.

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