Abstract: The invention relates to a method for extracting mycotoxins from grain and other food products or from feed and its subsequent quantification. Fields of application are the food industry, the animal feed industry or biotechnology. The objective of the present invention is to develop an extraction method with which it is possible to uniformly extract mycotoxins with different dissolving properties. It was found that with the aid of aqueous, buffered naphthyl and/or phenyl compounds or their heterocyclical analogues, both hydrophobic and hydrophilic mycotoxins can be extracted. The method according to the invention is characterized in that the buffered solutions of naphthyl and/or phenyl compounds and/or their heterocyclical analogues, which carry at least one sulphonic acid or at least one carbonate acid group, are brought into contact with the grain or other food products or animal feed, the aqueous solution is then separated and the content of the extracted mycotoxins in the aqueous solution is determined.

Abstract: The invention relates to a method for extracting mycotoxins from grain and other food products or from feed and its subsequent quantification. Fields of application are the food industry, the animal feed industry or biotechnology. The objective of the present invention was to develop an extraction method with which it is possible to uniformly extract mycotoxins with different dissolving properties. It was found that with the aid of aqueous, buffered naphthyl and/or phenyl compounds or their heterocyclical analogues, both hydrophobic and hydrophilic mycotoxins can be extracted. The method is characterized in that the buffered solutions of naphthyl and/or phenyl compounds and/or their heterocyclical analogues, which carry at least one sulphonic acid or at least one carbonate acid group, are brought into contact with the grain or other food products or animal feed, the aqueous solution is separated and the content of the extracted mycotoxins in the solution is determined.

Abstract: The present invention provides a test carrier for the analysis of a sample liquid with a test layer which contains a ligand fixed to to carrier particles, which ligand reacts with a component of the sample liquid, the test layer having a three-dimensional open structure which is so porous that the sample liquid with the component can penetrate into it, the carrier particles being arranged in the layer in such a manner that the ligand, upon pentration of the sample liquid, comes into contact with the component of the sample, wherein the carrier particles consist of an inorganic material, on the surface of which reactive organic groups are covalently bound as coupling groups, and the ligand is covalently bound to the coupling groups. The present invention also provides processes for the production of such a test carrier and a method for using it.