0000000000157196
AUTHOR
J. Saez
Bee pollen, a substrate that stimulates ochratoxin A production by Aspergillus ochraceus Wilh.
The capacity of bee pollen as a substrate for production of ochratoxin A (OTA) by a strain of Aspergillus ochraceus was studied. For control purposes corn, wheat and rice grains, and eleven liquid media were assayed. They were Yeast Extract Sucrose broth (YES), YES supplemented with 0.05, 0.1, 0.5, 1 and 5% bee pollen, YES supplemented with 0.5% peptone, 50% must, Wickerham medium, Aflatoxin Production medium and Coconut Broth Medium. Cultures were maintained at 28 degrees C for 4 weeks and were analyzed every seven days for OTA by liquid chromatography with fluorescence detection. OTA production in bee pollen was significantly (P < 0.01) higher than production in corn, wheat and rice grain…
Comparison of different sample treatments for the analysis of ochratoxin A in must, wine and beer by liquid chromatography.
Abstract Ochratoxin A (OTA) is a mycotoxin produced by some species of Aspergillus and Penicillium verrucosum. It has been found in foods and feed all over the world. There is a great concern about OTA because it is nephrotoxic and probably, carcinogenic to humans. Most of analytical methods developed for OTA in wine, beer and other products are based on LC with fluorescence detection (LC–FLD). In the present work, various procedures for extraction and/or clean-up for determination of OTA in musts, wine and beer by LC–FLD were compared: (1) dilution with polyethylen glycol 8000 and NaHCO3 solution and clean-up an on immunoaffinity column (IAC); (2) extraction with chloroform and IAC clean-u…
CCDC 696570: Experimental Crystal Structure Determination
Related Article: A.Saez, C.Ramirez de Arellano, N.El Aouad, S.Rodriguez, F.Otalvaro, D.Cortes, J.Saez|2008|Acta Crystallogr.,Sect.E:Struct.Rep.Online|64|o1305|doi:10.1107/S1600536808018266