A simple extraction method for the detection and quantification of polyoxin D, a nucleoside antibiotic, in butterbur using UPLC-MS/MS. (15th April 2017)

• Record Type: Journal Article
• Authors: Rahman, Md. Musfiqur; Abd El-Aty, A.M.; Kim, Sung-Woo; Na, Tae-Woong; Shin, Ho-Chul; Hong, Su-Myeong; Shim, Jae-Han
• Is Part Of: Food chemistry. Volume 221(2017)
• Page Start: 683
• Page End: 688
• Publication Date: 2017-04-15
• Subjects: Polyoxin D -- UPLC-MS/MS -- Butterbur -- Half-life -- Dissipation -- Fungicide; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2016.11.119
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: A simple and effective method was developed for the detection and quantification of polyoxin D in butterbur using UPLC-MS/MS. Due to the hydrophilic character of polyoxin D, the analyte was unrecovered following QuEChERS extraction. QuEChERS d-SPE was also unable to remove interference in the UPLC-MS/MS results originating from chlorophyll and other pigments from green leafy vegetables. Use of acidified water extractions and Oasis HLB cartridges successfully recovered the target analyte. Abstract: An effective analytical method was developed for the detection and quantification of polyoxin D in butterbur using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Samples were extracted using acidified deionised water and purified via solid-phase extraction (SPE) using an HLB cartridge. An external matrix-matched standard calibration curve was prepared, which provided an excellent linearity with a coefficient of determination ( R 2 ) ⩾0.999. Limits of detection (LOD) and quantification (LOQ) were 0.015 and 0.0.05 μg/g, respectively. The developed method was validated in terms of recovery performance using two fortification levels in triplicate. The storage stabilities of the various field samples were also determined. Our method provided consistent recovery (86.26–87.37%) with a relative standard deviation (RSD) of <5%, and was successfully applied to field-treated butterbur grown under greenhouse conditions and collected at various times following commercial fungicide application. As expected, a gradual degradation of polyoxin D was observed, with a half-life (t1/2 ) of 2.11 d being recorded. Finally, we propose that the developed method can be extrapolated to other crops for routine analysis and can be used to determine the pre-harvest intervals (PHIs), thus preventing the development of antibiotic resistance genes in humans and in the environment.