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Validation of a Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometric Method to Determine Six Polyether Ionophores in Raw, UHT, Pasteurized and Powdered Milk

Mararlene Ulberg Pereira, Bernardete Ferraz Spisso, Silvana do Couto Jacob, Mychelle Alves Monteiro, Rosana Gomes Ferreira, Betânia de Souza Carlos, Armi Wanderley da Nóbrega

Food Chem. 2016 Apr 1;196:130-7.

PMID: 26593474

Abstract:

This study aimed to validate a method developed for the determination of six antibiotics from the polyether ionophore class (lasalocid, maduramicin, monensin, narasin, salinomycin and semduramicin) at residue levels in raw, UHT, pasteurized and powdered milk using QuEChERS extraction and high performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS). The validation was conducted under an in-house laboratory protocol that is primarily based on 2002/657/EC Decision, but takes in account the variability of matrix sources. Overall recoveries between 93% and 113% with relative standard deviations up to 16% were obtained under intermediate precision conditions. CCα calculated values did not exceed 20% the Maximum Residue Limit for monensin and 25% the Maximum Levels for all other substances. The method showed to be simple, fast and suitable for verifying the compliance of raw and processed milk samples regarding the limits recommended by Codex Alimentarius and those adopted in European Community for polyether ionophores.

Chemicals Related in the Paper:

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ALP55721318 Salinomycin monosodium salt hydrate Salinomycin monosodium salt hydrate 55721-31-8 (anhydrous) Price
AP28643803-A Nigericin sodium salt Nigericin sodium salt 28643-80-3 Price
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