| Mycological survey for potential aflatoxin and ochratoxin producers and their toxicological properties in harvested Brazilian black pepper. | |
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MedLine Citation:
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PMID: 14726275 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A mycological survey was carried out on 115 samples of whole dried black pepper seeds, from two main production regions of Brazil (Pará and Espírito Santo). A high incidence of contamination was verified in both regions when 99.1% of the samples showed filamentous fungi contamination. A total of 497 species of nine different genera were isolated (Aspergillus, Eurotium, Rhizopus, Penicillium, Curvularia, Cladosporium, Absidia, Emericella and Paecilomyces). The genus Aspergillus was the predominant (53.5%) followed by species from the Eurotium genus (24.5%). Eurotium chevalieri (16.4%) was the most predominant species followed by A. flavus (14.6%) present on 55 samples of black pepper (47.8%) analysed. Twenty-five samples (21.7%) were contaminated with aflatoxigenic strains of A. flavus and A. parasiticus. In relation to the types of aflatoxins produced by mycotoxigenic strains, it was observed that 25 strains (44.6%) of 56 isolated of A. flavus produced aflatoxins. From 12 samples, A. ochraceus species were isolated in low frequency (3.5%). Two strains of A. ochraceus from 16 isolated were producers of ochratoxin A. With respect to the aflatoxins and ochratoxin A natural contamination, none of the samples presented detectable levels of these mycotoxins using thin-layer chromatographic analysis. |
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Authors:
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M J Gatti; M E Fraga; C Magnoli; A M Dalcero; C A da Rocha Rosa |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Food additives and contaminants Volume: 20 ISSN: 0265-203X ISO Abbreviation: Food Addit Contam Publication Date: 2003 Dec |
Date Detail:
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Created Date: 2004-01-16 Completed Date: 2004-03-05 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8500474 Medline TA: Food Addit Contam Country: England |
Other Details:
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Languages: eng Pagination: 1120-6 Citation Subset: IM |
Affiliation:
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Departamento de Biologia, Instituto Oswaldo Cruz, Rio de Janeiro, Brasil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aflatoxins
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biosynthesis* Black Pepper / chemistry, microbiology* Brazil Chromatography, Thin Layer / methods Culture Media Food Contamination / analysis Food Microbiology* Fungi / classification, isolation & purification*, metabolism Humans Ochratoxins / biosynthesis* |
| Chemical | |
Reg. No./Substance:
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0/Aflatoxins; 0/Culture Media; 0/Ochratoxins; 303-47-9/ochratoxin A |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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