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A simple, rapid, sensitive, inexpensive and less sample consuming method of C 18 -stir bar sorptive extraction (SBSE)–high performance liquid chromatography (HPLC)–tandem mass spectrometry (MS/MS) was proposed for the determination of six sulfonamides in milk and milk powder samples. C 18 silica particles coated stir bar was prepared by adhesion method, and two kinds of adhesive glue,...
An ion-paired extraction (IPE) has been developed for the analysis of penicillin antibiotics (penicillin G, oxacillin and cloxacillin) in beef and milk samples using tetrabutylammonium bromide (TBABr) as ion-pairing agent and binary water–acetonitrile as extractant. The factors affecting the IPE efficiency were optimized including solution pH, volume of acetonitrile (ACN), concentration of TBABr and...
Bisphenol A (BPA) is a polyphenol widely used in industry as an intermediate in the production of polycarbonate plastics and epoxy resins, which are applied to produce plastic food containers, inner surface coating of food and beverage cans. Hence, BPA can migrate from these containers and cans with epoxy coating into foods. It is dangerous taking into account that BPA is considered as a potential...
A simplified procedure for simultaneous quantification of ceftiofur (CEF), fluoroquinolone (FQ) and sulfonamide (SA) antibacterials in bovine milk was developed. The reverse-phase liquid chromatography (RP-LC) multiclass method for analysis of eleven distinct compounds, from three antibacterial classes, was validated in line with Commission Decision 2002/657/EC. Confirmation of the analytes identities...
The present study reports an improved method to quickly and reproducibly isolate the saccharides from a variety of dairy and soy products utilizing reversed-phase solid-phase extraction to quantitatively remove fats, fatty acids, and lipids followed by desalination and deproteinization by ion-exchange solid-phase extraction with no loss of saccharides during extraction. Analysis of the isolated saccharides...
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