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Type: Artigo de Periódico
Title: A simple, fast and sensitive screening LC-ESI-MS/MS method for antibiotics in fish
Authors: Letícia Rocha Guidi
Flávio Alves Santos
Ana Cláudia dos Santos Rossi Ribeiro
Christian Fernandes
Luiza Helena Meller da Silva
Maria Beatriz de Abreu Glória
Abstract: The objective of this study was to develop and validate a fast, sensitive and simple liquid chromatography–electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method for the screening of six classes of antibiotics (aminoglycosides, beta-lactams, macrolides, quinolones, sulfonamides and tetracyclines) in fish. Samples were extracted with trichloroacetic acid. LC separation was achieved on a Zorbax Eclipse XDB C18 column and gradient elution using 0.1% heptafluorobutyric acid in water and acetonitrile as mobile phase. Analysis was carried out in multiple reaction monitoring mode via electrospray interface operated in the positive ionization mode, with sulfaphenazole as internal standard. The method was suitable for routine screening purposes of 40 antibiotics, according to EC Guidelines for the Validation of Screening Methods for Residues of Veterinary Medicines, taking into consideration threshold value, cut-off factor, detection capability, limit of detection, sensitivity and specificity. Real fish samples (n=193) from aquaculture were analyzed and 15% were positive for enrofloxacin (quinolone), one of them at a higher concentration than the level of interest (50 µg kg−1), suggesting possible contamination or illegal use of that antibiotic.
Subject: Farmácia
language: eng Brasil
Publisher: Universidade Federal de Minas Gerais
Publisher Initials: UFMG
metadata.dc.publisher.department: FAR - DEPARTAMENTO DE ALIMENTOS
Rights: Acesso Aberto
metadata.dc.identifier.doi: 10.1016/j.talanta.2016.10.089
Issue Date: 15-Jan-2017
metadata.dc.relation.ispartof: Talanta (oxford)
Appears in Collections:Artigo de Periódico

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