An improved method for the measurement of 3-monochloropropanediol esters by matrix solid-phase dispersionsupported liquid-liquid extraction

文献类型： 外文期刊

第一作者： Jiao, Bo

作者： Jiao, Bo;Hu, Hui;Shi, Aimin;Liu, Hongzhi;Liu, Li;Wang, Qiang;Fu, Wusheng;Adhikari, Benu

作者机构：

关键词： 3-Monochloropropanediol esters;acid transesterification;dispersed matrix solid-phase supported liquid-liquid extraction;edible oil

期刊名称：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY （ 影响因子：3.713； 五年影响因子：3.408 ）

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收录情况： SCI

摘要： 3-Monochloropropanediol (3-MCPD) esters are contaminants produced from the high-temperature processing of edible oils. The accurate measurement of 3-MCPD using an easy-to-follow and reliable method that uses a readily available instrument is important. Here, we report an acid transesterification heptafluorobutyrylimidazole (HFBI) derivatisation method for the accurate measurement of 3-MCPD esters in edible oils. We developed a dispersed matrix solid-phase supported liquid-liquid extraction (DMSP-SLE) system to remove impurities. Both the transesterification and DMSP-SLE conditions were optimised. A good linear relationship was obtained within the range of 0.05-10 mg kg(-1) (R-2 >= 0.999) in both blank solvent and an oil sample. The limit of detection was 20.36 mu g kg(-1). The average recovery of the 3-MCPD esters spiked at 0.5, 1.0 and 2.0 mg kg(-1) into a blank oil matrix was in a range from 105.09 +/- 2.77% to 120.16 +/- 10.88%. The method we developed was further confirmed by performing detection on a Food Analysis Performance Assessment Scheme (FAPAS) sample.

分类号： TS2

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