A manuscript in the journal recently cited experimental rat data from two manuscripts to support plausibility of a thesis that ochratoxin A might be a cause of human testicular cancer. I believe that there is no experimental evidence that ochratoxin A produces testicular cancer in rats or mice.

The unusual attribution of trace amounts of ochratoxin A in some Chinese food commodities to Penicillium polonicum is questioned by European experience in searches for ochratoxinogenic food-spoilage Penicillia, where mistaken attribution is now known to have been due to cryptic Penicillium verrucosum contamination. Consequently, selection of single-spore isolates is recommended as pre-requisite...

The paper deals with design of low-order RC filters working in current mode (CM). As the basic building blocks, transconductors (OTA) with single input and multiple outputs are used. One-loop, two-loop and multi-loop structures are discussed. The adjoint VM-CM transformation is used to obtain new circuits from known VM prototype. The designed structures are verified by Pspice simulations using ...

In Light and Warburton’s (2005b) rejoinder (hereafter, Rejoinder) to our reply (DiMasi et al., 2005; hereafter, Reply), the authors reiterate some erroneous assertions made in their original comment (Light and Warburton, 2005a; hereafter, Comment) and add unsubstantiated insinuations of bias on the part of the now defunct US Congressional Office of Technology Assessment (OTA) and of academics a...

New insight in the ochratoxin A biosynthetic pathway by deletion of an nrps 1 gene in Aspergillus carbonarius 2 3 Antonia Gallo, Kenneth S. Bruno, Michele Solfrizzo, Giancarlo Perrone, Giuseppina 4 Mulè, Angelo Visconti and Scott E. Baker 5 6 Institute of Sciences of Food Production (ISPA), National Research Council (CNR), Bari, Italy. 7 8 Chemical and Biological Process Development Group, Paci...

Ochratoxin A (OTA) is a mycotoxin identified as a contaminant in grains and wine throughout the world, and convenient, rapid and sensitive detection methods for OTA have been a long-felt need for food safety monitoring. Herein, we presented a new competitive format based lateral flow strip fluorescent aptasensor for one-step determination of OTA in corn samples. Briefly, biotin-cDNA was immobil...

A new IS-anionic stationary phase was synthesized to make on-line extraction of the ochratoxin A and B from samples of beer for HPLC. The propyltriethylammonium chloride stationary phase was characterized affecting it's elementary determination and RI specter, respectively. Evaluation of the IS-anionic column for the extraction and quantification of OTA and OTB in beer has shown that the column...

BACKGROUND Maize is considered one of the crops more susceptible to mycotoxins in the world. Two of the mycotoxins commonly associated with maize are fumonisins and ochratoxin A. Aspergillus niger is a known producer of ochratoxin A and is easily found in maize. Recently, however, A. niger has been reported to produce as well fumonisins, mainly fumonisin B(2). AIMS The aim of this study was t...

A simple thin-layer chromatography-fluorodensitometric method for quantitative analysis of ochratoxin A was developed. This method proved to be of use in investigating the production of the toxin and the nutritional factors affecting the toxin production by two strains of Aspergillus ochraceus isolated from moldy rice in Japan. These fungi produced large amounts of ochratoxin A in a nutrient so...