A Liquid Chromatography–Tandem Mass Spectrometry Method for the Detection of Antimicrobial Agents from Seven Classes in Calf Milk Replacers: Validation and Application
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- 作者：Luca Maria Chiesa ; Maria Nobile ; Sara Panseri ; Bartolomeo Biolatti ; Francesca Tiziana Cannizzo ; Radmila Pavlovic ; Francesco Arioli
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2016
- 出版时间：March 30, 2016
- 年：2016
- 卷：64
- 期：12
- 页码：2635-2640
- 全文大小：282K
- ISSN：1520-5118
文摘
Calf milk replacers are low-cost feeds that contain available, digestible protein. During their reconstitution, however, the addition of drugs, such as antibiotics, could make them a very simple route for illicit treatment for therapeutic, preventive, or growth-promoting purposes. We developed an HPLC-MS/MS method, preceded by a unique extraction step, able to identify 17 antibiotics from seven classes (penicillins, tetracyclines, fluoroquinolones, sulfonamides, cephalosporins, amphenicols, and lincosamides) in this matrix. Prior to solid phase extraction (SPE), the sample underwent deproteinization and defatting. The method was fully validated according to Commission Decision 2002/657/EC. Decision limits (CCα) and detection capability (CCβ) were in the ranges of 0.13–1.26 and 0.15–1.47 ng/mL, respectively. Thirty-eight samples were finally analyzed, showing the occasional presence of marbofloxacin (six samples) and amoxicillin (one sample).