title: Determination of synthetic drugs used to adulterate botanical dietary supplements using QTRAP LC-MS/MS.
abstract: Adulteration of botanical dietary supplements with prohibited synthetic drugs has become a serious problem. In this paper, a method for testing synthetic drugs used to adulterate botanical dietary supplements was developed using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) coupled with a linearity ion-trap system in the multiple reaction monitoring (MRM) plus enhanced product ion (EPI) mode. Twenty-three drugs exhibiting various pharmacological effects, comprising blood pressure and lipid-lowering agents, sedative drugs, anti-diabetic drugs, weight-reducing agents and aphrodisiac compounds, were studied. For all drugs, a single transition was monitored using protonated molecules as precursor ions. EPI spectra were stored in a library and recognized by library searching. Several undeclared drugs were identified in herbal remedies, e.g., glibenclamide, sibutramine hydrochloride and sildenafil. Overall, 35 positive samples were found out of a total of 105 botanical dietary supplements tested. The method was selective, sensitive, rapid, high-throughput and reliable.
authors.affiliation: School of Pharmacy, Second Military Medical University, Shanghai, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.forename: F
authors.initials: F
authors.lastname: Lu
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.forename: Y
authors.initials: Y
authors.lastname: Chai
authors.forename: Y
authors.initials: Y
authors.lastname: Wu
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods; D019587:Dietary Supplements / Q000032:analysis*; D004340:Drug Contamination; D013058:Mass Spectrometry / Q000379:methods; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D028321:Plant Preparations / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D053719:Tandem Mass Spectrometry
chemical_list: D004364:Pharmaceutical Preparations; D028321:Plant Preparations