LIU Zhen,WANG Yu-mei,HU Wen-yan.Determination of Five Peptide Antibiotics in Pork by HPLC-MS/MS Based on Pass-through Solid Phase Extraction[J].Journal of Instrumental Analysis,2023,42(02):197-203.
LIU Zhen,WANG Yu-mei,HU Wen-yan.Determination of Five Peptide Antibiotics in Pork by HPLC-MS/MS Based on Pass-through Solid Phase Extraction[J].Journal of Instrumental Analysis,2023,42(02):197-203. DOI: 10.19969/j.fxcsxb.22103102.
Determination of Five Peptide Antibiotics in Pork by HPLC-MS/MS Based on Pass-through Solid Phase Extraction
A high performance liquid chromatography-tandem mass spectrometric(HPLC-MS/MS) method was developed for the determination of five peptide antibiotics,i.e.daptomycin,vancomycin,norvancomycin,virginiamycin M1 and virginiamycin S1 in pork based on a purification technique with non-activation pass-through solid phase extraction(SPE) column.The pork samples were extracted with methanol-2% formic acid(5∶2,by volume),and purified with a non-activation Captiva EMR-Lipid SPE column.The separation was carried out on a Phenomenex Kinetex F5(2.1 mm × 100 mm,2.6 μm) column by gradient elution,with 0.1% formic acid acetonitrile solution and 0.1% formic acid as mobile phases.The target substances were analyzed in electrospray ion source positive ion mode under multi-reaction monitoring(MRM) mode,and quantified by the internal standard method.Results showed that the calibration curves of five peptide antibiotics in pork were linear(,r,2,>, 0.99) in the range of 2-200 ng/mL for daptomycin,5-500 ng/mL for vancomycin and norvancomycin,and 1-100 ng/mL for virginiamycin M1 and virginiamycin S1.The limits of detection were in the range of 3-7.5 μg/kg,and the limits of quantitation were in the range of 5-25 μg/kg.The recoveries of five peptide antibiotics from negative pork samples at three spiked levels of 25,50,250 μg/kg ranged from 80.2% to 102%,with intra-RSDs and inter-RSDs of 1.3%-7.4% and 2.6%-8.5%,respectively.With the characteristics of simple pretreatment,good recovery and repeatability,this method based on Captiva EMR-lipid SPE column is suitable for the simultaneous analysis of 5 peptide antibiotics in pork.
关键词
肽类抗生素液相色谱-串联质谱法(HPLC-MS/MS)猪肉通过式固相萃取
Keywords
peptide antibioticsliquid chromatography-tandem mass spectrometry(HPLC-MS/MS)porkpass-through solid phase extraction
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South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences;Fishery Environment and Aquatic Products Quality Inspection & Testing Center of the Ministry of Agriculture and Rural Affaires
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