Journal
FOOD CHEMISTRY
Volume 190, Issue -, Pages 982-989Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.06.048
Keywords
LC-MS/MS; Honey; Veterinary drug residues; Nitrofuran; Nitroimidazoles; Ronidazole; Dimetridazole; AHD; AOZ; AMOZ; SEM
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LC-MS/MS assay was developed and validated according to EU guidelines for determination of nitrofuran metabolites and nitroimidazole residues in honey. Crude samples were acid-treated to liberate matrix-bound residues and a modified QuEChERS protocol was employed. Nitrofurantoin, furazolidone, furaltadone and nitrofurazone were determined via analysis of their metabolites AHD, AOZ, AMOZ and SEM, respectively while nitroimidazole residues; ronidazole (RNZ) and dimetridazole (DMZ) were determined directly. For all analytes, neat standard calibration curves, after correction for matrix effect were successfully employed. Decision limit (CC alpha) and detection capability (CC beta) were below the MRPL for nitrofurans (1.00 mu g kg(-1)) and the recommended concentration for nitroimidazole (3.00 mu g kg(-1),), respectively. The CC alpha, CC beta, percentage recovery and CV% ranges were 0.12-0.74 mu g kg(-1), 0.21-1.27 mu g kg(-1), 90.96-104.80% and 2.65-12.58%, respectively. This work is part of the national initiative for establishing a national monitoring program for drug residues in Egyptian honey. (C) 2015 Elsevier Ltd. All rights reserved.
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