Abstract:
To establish a method for the rapid detection of 17 colorants in meat products by ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS), samples were homogeneously extracted with water, degreased with n-hexane, enriched and purified with weak anion solid phase extraction (WAX) column. The seventeen compounds were separated on ACQUITY UPLC HSS T3 column by the gradient elution using acetonitrile-5 mmol/L ammonium acetate solution as mobile phase, detected by MS/MS with negative mode in multiple reaction monitoring (MRM) mode, and finally quantified by external standard method. The correlation coeffcients (
r) of the seventeen compounds were above 0.99 in the mass concentration ranging from 20~1200 μg/L. The limits of detection and the limits of quantification of the method were 0.01~0.05 mg/kg and 0.03~0.15 mg/kg, respectively. The recoveries of seventeen analyses spiked at three levels (0.15, 0.30 and 1.0 mg/kg) in meat products ranged from 71.2% to 103.5% with the relative standard deviations (RSDs, n=6) ranged from 1.3%~4.9%. The method was easy to operate and with good purification effect. It could be applied to the rapid determination of the synthetic colorants in meat products
.