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Mycoflora and mycotoxins of peanut (Arachis hypogaeaL.) seeds in Egypt. 1-sugar fungi and natural occurrence of mycotoxins

✍ Scribed by O. M. O. El-Maghraby; S. S. Mohamed El-Maraghy

Publisher: Springer Netherlands
Year: 1987
Tongue: English
Weight: 426 KB
Volume: 98
Category: Article
ISSN: 0301-486X
DOI: 10.1007/bf00437651

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✦ Synopsis

Sixty-four species and 2 varieties which belong to nineteen genera of fungi were identified from 40 peanut seed samples collected from different places in Egypt by using a dilution-plate method on glucose-Czapek's medium. The most frequent genera were Aspergillus (21 species & 2 varieties), Penicillium (16 species) and Fusarium (6 species). A. flavus, A. fumigatus, A. niger, P. chrysogenum and E oxysporum were the most common fungal species. Forty seven percent of the samples proved to be toxic to brine shrimp (Artemia salina) larvae. Thin-layer chromatographic analysis revealed that peanuts were contaminated by aflatoxins (11 samples), thrichothecene-toxins (10 samples), zearalenone (one sample) and citrinin (one sample). We believe that this is the first report of the natural occurrence of zearalenone and trichothecene-toxins in peanuts.

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