| Autor: |
Saleemi, Muhammad Kashif, Khan, Muhammad Zargham, Khan, Ahrar, Hameed, Muhammad Raza, Khatoon, Aisha, Abadin, Zain ul, Hassan, Zahoor Ul |
| Předmět: |
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| Zdroj: |
Toxin Reviews; Mar2017, Vol. 36 Issue 1, p80-88, 9p |
| Abstrakt: |
The present study was designed to investigate the fungi and their toxigenic potentials isolated from the wheat and wheat brans. A total of 67 samples of wheat and 17 samples of wheat bran were collected from Faisalabad district of Pakistan. Forty-five (67.16%) samples of wheat yielded fungi. Frequency distribution based on total samples,Aspergilluswas the highest (44.77%) genus followed byPenicillium, FusariumandAlternaria. Penicillium verucosum(30.64%) was the most frequently isolated species followed byA. nigeraggregates,A. flavus, A. parasiticus, P. chrysogenum, A. ochraceous, A. carbonariusandA. fumigatus.AmongAspergilli, A. nigeraggregates (46.67%) were most frequently isolated species. Out of 30Aspergilliisolates from wheat samples, 17 (56.66%) were found toxigenic. AFB1 produced by aflatoxigenicAspergillivaried from 1.44 to 836.3 ng/g, while ochratoxin A levels varied from 0.037 to 15 045 ng/g. AmongPenicilliumspecies,P. verrucosum(63.15%) were found ochratoxigenic and OTA levels were varied from 7.31 to 8400 ng/g. In wheat bran, 10 (58.82%) samples yielded fungi. Based upon total samples, frequency distribution ofAspergillus(35.28%) was the highest followed byPenicilliumandFusarium. Similar pattern was observed in relative density of isolates.A. nigeraggregates andP. verrucosumwere predominant species (23.07%) isolated from wheat bran. AmongAspergilli, A. nigeraggregates (50%) were the most frequently isolated species followed byA. flavus, A. fumigatusand A. ochraceous(16.67%) each. The OTA levels of fungi isolated from wheat bran varies from 0.292 to 2500 ng/g. Isolation of toxigenicA. nigeraggregates from wheat indicates that these species should be considered as possible contributors of OTA contamination in wheat and its by-products in Pakistan. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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