title: High- and low-resolution mass spectrometry coupled to liquid chromatography as confirmatory methods of anabolic residues in crude meat and infant foods.
abstract: Within the European Union the use of anabolic steroids for promoting growth and improving meat-to-fat ratio in food-producing animals has been banned since 1988. For the unequivocal identification of hormone residues in a complex matrix such as meat we have developed a rapid, specific and sensitive liquid chromatography/tandem mass spectrometry (LC/MS/MS) method, in combination with a simple extraction procedure based on the matrix solid-phase dispersion (MSPD). The performances of a triple quadrupole (QqQ) and a quadrupole/time-of-flight (QqTOF) were compared: the QqQ mass spectrometer was found to be more sensitive for almost all studied analytes, but the selectivity was superior using the QqTOF system; the full-scan spectra (acquired without losing sensitivity), mass accuracy and resolution of the hybrid instrument enabled a more probatory analyte identification than that obtained selecting two multiple-reaction monitoring (MRM) transitions with a QqQ. Average recoveries ranged from 80 to 100%, and the detection capabilities (CCbetas) were less than 1.06 ppb with the QqQ instrument and less than 5.20 ppb with the QqTOF instrument for the bovine meat, which proved to be the most complex matrix.
authors.affiliation: Dipartimento di Chimica, Università La Sapienza di Roma, Piazzale Aldo Moro no 5, P.O. Box 34, Posta 62, 00185 Roma, Italy. alessandra.gentili@uniroma1.it
authors.forename: Alessandra
authors.initials: A
authors.lastname: Gentili
authors.forename: Manuel
authors.initials: M
authors.lastname: Sergi
authors.forename: Daniela
authors.initials: D
authors.lastname: Perret
authors.forename: Stefano
authors.initials: S
authors.lastname: Marchese
authors.forename: Roberta
authors.initials: R
authors.lastname: Curini
authors.forename: Sabrina
authors.initials: S
authors.lastname: Lisandrin
mesh_terms: D045930:Anabolic Agents / Q000032:analysis*; D000818:Animals; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D005506:Food Contamination / Q000032:analysis / Q000517:prevention & control; D006801:Humans; D007223:Infant; D007225:Infant Food / Q000032:analysis*; D008460:Meat / Q000032:analysis*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D045930:Anabolic Agents