Simultaneous detection of four azo synthetic colorants in meat products using multi-stage porous MOFs materials combined with high-performance liquid chromatography
A high-performance liquid chromatography(HPLC)method was established for the simultaneous detection of four azo synthetic colorants(carmine,sunset yellow,lemon yellow,amaranth)in meat products,using multi porous MOFs(macro microporous ZIF-8,M-ZIF-8)as adsorbents for purification.The results showed that under optimized instrument conditions,the four azo based synthetic colorants had good linearity,with a correlation coeffi-cient greater than 0.999,a limit of quantification(LOQs)of 0.3-0.5 mg/kg,a recovery rate of 92.0％-105.1％,and a relative standard deviation of 0.5％-2.2％.This method is efficient and fast,capable of simultaneously detecting four types of azo synthetic colorants in meat prod-ucts,shortening the pre-treatment time,and can be reused at least 5 times,reducing analysis costs.Therefore,this method has good application prospects in the detection of azo synthetic col-orants in meat products.
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