abstract: ochratoxin a (ota) continues to attract global attention concerning the hazard and impact on both human and animals based on its toxicity and occurrence. the international agency for research on cancer (iarc) classifies it as possible carcinogen to human (group 2b). a total of 98 samples of dried fruits consisting of coconut, sour cherry, slices of peaches, quinces, and pineapple from...

Ochratoxin A (OTA) is a potent nephrotoxin and carcinogen which is found in a wide variety of common foods and beverages and it is produced by several species of Aspergillus and Penicillium. Ochratoxin α (OTα), a major metabolite of OTA, has also been reported to occur in cultures of OTA-producing species. However there is some controversial about the participation of OTα in the biosynthesis of...

A total of 93 Portuguese grape samples destined for wine production were examined for the presence of ochratoxin A (OTA) and the OTA producing fungi Aspergillus carbonarius and A. niger aggregate. Samples came from 11 vineyards from four winemaking regions in the North and South of the Portuguese mainland, during the harvest seasons of 2001, 2002 and 2003. Grapes were examined at 3 maturation s...

Ochratoxin A (OTA) is one of the main mycotoxins that can be found in food. The use of gamma radiation is a technique for preserving food that may exert some effects on mycotoxins. OTA was irradiated in its dry form, in aqueous and in methanolic solutions, and in wheat flour, grape juice and wine. Additionally, the toxicity of OTA irradiated in water was tested. In aqueous solutions, more than ...

UNLABELLED Ochratoxin A (OTA) is a toxic secondary metabolite of fungi belonging to the Aspergillus and Penicillium genera, its presence in human blood being the primary indicator of exposure. AIM In the present study we determined OTA in 38 blood samples collected from healthy Romanian subjects of both genders. MATERIAL AND METHODS The OTA was determined through the direct, competitive, so...

The aim of this study was to select wine yeast strains as biocontrol agents against fungal contaminants responsible for the accumulation of ochratoxin A (OTA) in grape and wine and to dissect the mechanism of OTA detoxification by a Saccharomyces cerevisiae strain (DISAABA1182), which had previously been reported to reduce OTA in a synthetic must. All of the yeast strains tested displayed an a...

Ochratoxin A (OTA) producing fungi are members of the genera Aspergillus and Penicillium. Nowadays, there are about 20 species accepted as OTA producers, which are distributed in three phylogenetically related but distinct groups of aspergilli of the subgenus Circumdati and only in two species of the subgenus Penicillium. At the moment, P. verrucosum and P. nordicum are the only OTA producing s...

Cocoa beans from several types of post harvest treatments were processed into cocoa butter, cocoa powder and chocolate spread using traditional processing techniques. OTA was analyzed in two hundred and sixteen (216) samples of cocoa and cocoa derived products using HPLC with fluorimetric detection. It was found that OTA content in cocoa nibs depended only on the state of cocoa pod and the time...

ABSTRACT: Ochratoxin A (OTA) continues to attract global attention concerning the hazard and impact on both human and animals based on its toxicity and occurrence. The International Agency for Research on Cancer (IARC) classifies it as possible carcinogen to human (group 2B). A total of 98 samples of dried fruits consisting of coconut, sour cherry, slices of peaches, quinces, and pineapple from...

Ochratoxin A (OTA) is a widespread nephrotoxin excreted to a substantial degree via the kidney. We investigated whether [3H]OTA is reabsorbed from the tubular lumen along the nephron and thus recycles within the kidney. Superficial early proximal and early distal tubules of male Wistar rats were micropunctured in situ. Microinfusion of OTA into superficial nephrons showed that it was reabsorbed...