The study was focused on optimization of methods for the determination of chemotherapeutics from the group of sulfonamides (sulfadiazine, sulfathiazole, sulfamethoxazole, sulfadoxin) in honey by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Three working processes were selected for the optimization: water, acid hydrolysis 1, acid hydrolysis 2. The aim of the study was to determine … [Read more…]
This study focused on the analysis of diastase activity, hydroxymethylfurfural, moisture content and electrical conductivity in honey samples from stores in Brno. We collected and analysed 34 honey samples. We proceeded in accordance with the “Harmonised Methods of the International Honey Commission” (Bogdanov 2009). Three of the blossom honey samples were labelled “Czech Honey”. Of … [Read more…]
The work was focused on monitoring the stability of the tetracycline antibiotics oxytetracycline, tetracycline and chlortetracycline during sample processing and on optimising the analytical procedure for the determination of tetracycline antibiotics in honey. Stability was tested on standard solutions of tetracyclines in the most commonly used solvents – water, methanol and Na2EDTA-McIlvaine buffer (citrate phosphate … [Read more…]