PMID- 32738527 OWN - NLM STAT- MEDLINE DCOM- 20210322 LR - 20210322 IS - 1873-376X (Electronic) IS - 1570-0232 (Linking) VI - 1153 DP - 2020 Sep 15 TI - The use of ultra-high-pressure-liquid-chromatography tandem time-of-flight mass spectrometry as a confirmatory method in drug residue analysis: Application to the determination of antibiotics in piglet liver. PG - 122264 LID - S1570-0232(20)30432-3 [pii] LID - 10.1016/j.jchromb.2020.122264 [doi] AB - Consumption of food containing antibiotic residues can cause direct toxic effects, such as allergic reactions, or indirect effects, like the possibility to contribute to the development of antimicrobial resistance. It is essential for consumer food safety, as well as for public health, to monitor antibiotics in foods of animal origin intended for human consumption, particularly in piglets, a highly consumed meat in Portugal. Concerning the lack of regulations regarding the validation criteria for the ToF-MS (time-of-flight mass spectrometry) drug residues determination, this study presents an approach for the use of UHPLC (ultra-high-pressure-liquid-chromatography)-ToF-MS not only for screening but also for confirmatory purposes of 45 antibiotics from 7 different classes. Thus, a method was optimized and validated in accordance with Decision 2002/657/EC by evaluating CCalpha, CCbeta, specificity, selectivity, recovery, ruggedness, repeatability and reproducibility. For antibiotics with no MRL set, the lowest values achieved for CCalpha and CCbeta were, respectively, of 0.1 mug kg(-1) and 0.2 mug kg(-1) for cinoxacin. Regarding precision, the CV values obtained ranged from 5% to 21% for repeatability and from 6% to 22% for reproducibility. Recoveries were calculated falling between 82% and 120%. After validation, the method was used to analyse piglet liver samples. Antibiotic residues were determined in 47% of the 21 analysed samples. Nevertheless, all the antibiotics were detected at concentrations below the MRLs. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Magalhaes, Daniela AU - Magalhaes D AD - University of Coimbra, Pharmacy Faculty, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal. FAU - Freitas, Andreia AU - Freitas A AD - INIAV - Instituto Nacional de Investigacao Agraria e Veterinaria, I.P., Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairao, Vila do Conde, Portugal; REQUIMTE/LAQV, University of Oporto, 4051-401 Porto, Portugal. FAU - Sofia Vila Pouca, Ana AU - Sofia Vila Pouca A AD - INIAV - Instituto Nacional de Investigacao Agraria e Veterinaria, I.P., Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairao, Vila do Conde, Portugal. FAU - Barbosa, Jorge AU - Barbosa J AD - INIAV - Instituto Nacional de Investigacao Agraria e Veterinaria, I.P., Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairao, Vila do Conde, Portugal; REQUIMTE/LAQV, University of Oporto, 4051-401 Porto, Portugal. FAU - Ramos, Fernando AU - Ramos F AD - University of Coimbra, Pharmacy Faculty, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; REQUIMTE/LAQV, University of Oporto, 4051-401 Porto, Portugal. Electronic address: fjramos@ci.uc.pt. LA - eng PT - Journal Article DEP - 20200713 PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 SB - IM MH - Animals MH - Animals, Newborn MH - Chromatography, High Pressure Liquid/*methods MH - Drug Residues/*analysis MH - Food Safety MH - Limit of Detection MH - Liver/*chemistry MH - Mass Spectrometry/*methods MH - Meat/analysis MH - Reproducibility of Results MH - Swine OTO - NOTNLM OT - Antibiotics OT - Food safety OT - Piglet liver OT - UHPLC-ToF-MS COIS- Declaration of Competing Interest None. EDAT- 2020/08/02 06:00 MHDA- 2021/03/23 06:00 CRDT- 2020/08/02 06:00 PHST- 2020/03/20 00:00 [received] PHST- 2020/06/02 00:00 [revised] PHST- 2020/07/08 00:00 [accepted] PHST- 2020/08/02 06:00 [pubmed] PHST- 2021/03/23 06:00 [medline] PHST- 2020/08/02 06:00 [entrez] AID - S1570-0232(20)30432-3 [pii] AID - 10.1016/j.jchromb.2020.122264 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2020 Sep 15;1153:122264. doi: 10.1016/j.jchromb.2020.122264. Epub 2020 Jul 13.