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Determination of Eight Sudan Dyes in Chili Powder by UPLC-MS/MS
Beijing Institute for Drug Control, Beijing, 100035, China
Beijing Institute for Drug Control, Beijing, 100035, China
Beijing Institute for Drug Control, Beijing, 100035, China
Beijing Institute for Drug Control, Beijing, 100035, China
Beijing Institute for Drug Control, Beijing, 100035, China
- 1 Beijing Institute for Drug Control, Beijing, 100035, China
- 2 Beijing Institute for Drug Control, Beijing, 100035, China
- 3 Beijing Institute for Drug Control, Beijing, 100035, China
- 4 Beijing Institute for Drug Control, Beijing, 100035, China
- 5 Beijing Institute for Drug Control, Beijing, 100035, China
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Abstract
Sudan dyes are synthetic azo dyes which are widely used in industry. Although they are not allowed in foodstuffs, they have been found contaminating in different food products and their presence is regularly reported. It is assumed that these appearances are due to cross-contamination or adulteration. In this paper, we present a newly developed fast and sensitive method for the quantification of eight Sudan dyes, using liquid-liquid extraction and UPLC-MS/MS analysis. The calibration curves were linear over the range of 0.1-25 mg/kg. Mean recovery for the eight Sudan dyes ranged from 80.7% to 104.4%, and with the inter-day and intra-day precisions ranged from 2.24% to 12.2%. The method was successfully applied in the determination of Sudan dyes in chili powder of 10 samples.
KeywordsSudan DyesUPLC-MS/MSChili Powder
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