PMID- 26043099 OWN - NLM STAT- MEDLINE DCOM- 20160301 LR - 20150605 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 882 DP - 2015 Jul 2 TI - Aminoglycoside analysis in food of animal origin with a zwitterionic stationary phase and liquid chromatography-tandem mass spectrometry. PG - 127-39 LID - S0003-2670(15)00441-9 [pii] LID - 10.1016/j.aca.2015.03.050 [doi] AB - In this study, fourteen highly polar aminoglycoside (AGs) antibiotics were selected. Various stationary phases were tested, including Obelisc R, ZIC-HILIC, BEH amide and aminopropyl. The nature of the stationary phase, mobile phase (water or buffer solutions and acetonitrile), pH (percentage of formic acid), gradient conditions and injection solvents were systematically studied as relevant parameters for tuning retention selectivity and detectability of AGs in liquid chromatography electrospray tandem mass spectrometry (LC-(ESI)-MS/MS). Only the two zwitterionic phases (Obelisc R and ZIC-HILIC) achieved a proper chromatographic separation considering interferences due to the crosstalk effect in low resolution mass spectrometers. The water/acetonitrile mobile phase containing 1% formic acid used with Obelisc R provided more sensitivity than the highly concentrated buffered mobile phases required for ZIC-HILIC. A solid phase extraction (SPE) clean-up procedure with polymeric weak cation exchange (WCX) cartridges was optimized for honey, milk and liver samples. Different brands of cartridges and elution solvents were tested, and the Taurus WCX offered the best recovery rate with a buffer elution at pH 3. The final optimized method was validated in these matrices according to Decision 2002/657/EC. A monitoring campaign for sixty honey, milk and liver samples was carried out at the Food Authority Control in Geneva. The concentration of dihydrostreptomycin (DSTP) found in one ovine liver exceeded the established maximum residue levels (MRLs) within the European and Swiss legislations but it was compliant taking into account the validation data. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Diez, Cristina AU - Diez C AD - Official Food Authority Control and Veterinary Affairs (SCAV), Quai Ernest-Ansermet 22, 1211 Geneva 4, Switzerland; School of Pharmaceutical Sciences, University of Lausanne, University of Geneva, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland. FAU - Guillarme, Davy AU - Guillarme D AD - School of Pharmaceutical Sciences, University of Lausanne, University of Geneva, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland. FAU - Staub Sporri, Aline AU - Staub Sporri A AD - Official Food Authority Control and Veterinary Affairs (SCAV), Quai Ernest-Ansermet 22, 1211 Geneva 4, Switzerland. FAU - Cognard, Emmanuelle AU - Cognard E AD - Official Food Authority Control and Veterinary Affairs (SCAV), Quai Ernest-Ansermet 22, 1211 Geneva 4, Switzerland. FAU - Ortelli, Didier AU - Ortelli D AD - Official Food Authority Control and Veterinary Affairs (SCAV), Quai Ernest-Ansermet 22, 1211 Geneva 4, Switzerland. FAU - Edder, Patrick AU - Edder P AD - Official Food Authority Control and Veterinary Affairs (SCAV), Quai Ernest-Ansermet 22, 1211 Geneva 4, Switzerland. FAU - Rudaz, Serge AU - Rudaz S AD - School of Pharmaceutical Sciences, University of Lausanne, University of Geneva, Boulevard d'Yvoy 20, 1211 Geneva 4, Switzerland. Electronic address: serge.rudaz@unige.ch. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150331 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Aminoglycosides) RN - 0 (Anti-Bacterial Agents) SB - IM MH - Aminoglycosides/*analysis MH - Animals MH - Anti-Bacterial Agents/*analysis MH - Chromatography, Liquid/*methods MH - Food Contamination/*analysis MH - Tandem Mass Spectrometry/*methods OTO - NOTNLM OT - Aminoglycosides OT - Honey OT - Liver OT - Milk OT - Zwitterionic EDAT- 2015/06/05 06:00 MHDA- 2016/03/02 06:00 CRDT- 2015/06/05 06:00 PHST- 2015/02/16 00:00 [received] PHST- 2015/03/26 00:00 [revised] PHST- 2015/03/28 00:00 [accepted] PHST- 2015/06/05 06:00 [entrez] PHST- 2015/06/05 06:00 [pubmed] PHST- 2016/03/02 06:00 [medline] AID - S0003-2670(15)00441-9 [pii] AID - 10.1016/j.aca.2015.03.050 [doi] PST - ppublish SO - Anal Chim Acta. 2015 Jul 2;882:127-39. doi: 10.1016/j.aca.2015.03.050. Epub 2015 Mar 31.