Objective To establish a method for detection of 19 dark pigments illegally added in Mumu Fructus by ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Methods Samples were extracted with methanol-0.1% formic acid solution (V:V=3:2) by ultrasonic 3 times, cleaned up with WAX and WCX columns to obtain acidic and alkaline pigments tested solution, respectively. Finally, the analytes were detected by UHPLC-MS/MS. Results Recoveries of 19 kinds of dark pigments in Mumu Fructus were 62.3%~128.2%, and the limits of detection were 0.5~345.5 μg/kg. This method could be applied to sample analysis, and the results found some partial illegally added pigments in Mumu Fructus. Conclusion The established method is fast and sensitive, which can meet the determination requirements of dark pigments illegally added in Mumu Fructus.
标题:超高效液相色谱-三重串联四级杆质谱法测定 乌梅中19种深色染色色素
英文标题:Detection of 19 dark pigments illegally added in Mumu Fructus by ultra high performance liquid chromatography-tandem mass spectrometry