26 (2020) Scientific papers, Series A
Permanentní URI k tomuto záznamuhttps://hdl.handle.net/10195/76706
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Článekpeer-reviewedpublished Otevřený přístup Determination of selected pesticides in honey and mead by HPLC(University of Pardubice, 2020) Pravcová, Kateřina; Macháčková, Nikola; Česlová, LenkaThe aim of this study was to monitor selected pesticides (Carbendazim, Acetamiprid, Thiacloprid, Epoxiconazole, Metconazole, Prochloraz, Deltamethrin, and T-fluvalinate) in honey and mead samples by reversed-phase liquid chromatography with spectrophotometric detection after QuEChERS extraction. The final separation was performed on YMC triart C18 column with mobile phase consisting of water and acetonitrile. The identification of selected pesticides in samples of honey and mead was performed on the basis of retention times conformity with the standards and quantification using the calibration curve method.Článekpeer-reviewedpublished Otevřený přístup Comparison of HPLC and electrochemical determination of 5-hydroxymethylfurfural in honey and mead samples(University of Pardubice, 2020) Pravcová, Kateřina; Mikysek, Tomáš; Česlová, LenkaThe content of 5-hydroxymethylfurfural (HMF) in honey and mead is strongly influenced by the technological process of these products and could be used as the parameter of choice to assess the quality of honey and mead. Therefore, the aim of this work was the comparison of well established reversed-phase high performance liquid chromatography (RP-HPLC) with voltammetric determination at the glassy carbon electrode. The final HPLC separation was performed on an Ascentis Express C18 column (150 × 3 mm, 2.7 μm) using isocratic elution with 10 % methanol in water. In total, 9 samples (6 honeys and 3 meads) were used for determination of the content of HMF.