Isolation and identification of ochratoxin A-producing Aspergillus section Nigri strains from California raisins
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چکیده
منابع مشابه
Isolation and identification of ochratoxin A-producing Aspergillus section Nigri strains from California raisins.
AIMS To determine incidence and levels of ochratoxin A (OTA) in California raisins and to isolate and characterize OTA-producing fungi from California raisin vineyard populations. METHODS AND RESULTS Forty raisin clusters sampled from four California vineyards in the San Joaquin Valley were analysed for OTA content using immunoaffinity and HPLC methods. OTA was detected in 93% of the samples...
متن کاملEcophysiology of Aspergillus Section Nigri Species Potential Ochratoxin A Producers
After aflatoxins, ochratoxin A (OTA) is the most studied mycotoxin due to the toxicological significance in human and animal diets. OTA presence has been extensively reported worldwide in the last decade in several agricultural products. The main OTA producer in tropical and temperate climates is Aspergillus carbonarius followed by species belonging to A. niger aggregate. Currently, many scient...
متن کاملNew ochratoxin A or sclerotium producing species in Aspergillus section Nigri
Aspergillus section Nigri includes some of the most important species for biotechnology and its species are of widespread occurrence. During our surveys of various food products and tropical soil we isolated several aspergilli belonging to section Nigri. In this paper, four new sclerotium and/or ochratoxin A producing species belonging to this section are proposed. In addition, based on a polyp...
متن کاملStructural diversity of Aspergillus (section nigri) spores.
The taxonomy of fungal species, similar to that of many other microorganisms, suffers frequent revisions due to the discovery of new species and to the development and gathering of characterization data and morphological information. Morpho-taxonomy helps in the identification of many species. This work presents the macro, micro-morphological, and spectral mass analyses for phenotypic character...
متن کاملOCCURRENCE OF A MYCOTOXIN, OCHRATOXIN A, IN WHEAT AND ISOLATION OF OCHRATOXIN A AND CITRININ PRODUCING STRAINS OF PENICILLIUM VIRIDICATUM Ochratoxin A is a metabolite of Aspergillus ochraceus
Ochratoxin A is a metabolite of Aspergillus ochraceus Wilh. (5) and of Penicillium viridicatum Westling (8). It is highly toxic to rats and ducklings and produces liver and kidney damage (6). Both A. ochraceus and P. viridicatum have been isolated from stored grain, and ochratoxin A itself was recently found in corn (7). The presence of this toxin in rolled wheat used as livestock feed is repor...
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ژورنال
عنوان ژورنال: Letters in Applied Microbiology
سال: 2011
ISSN: 0266-8254
DOI: 10.1111/j.1472-765x.2011.03004.x