Simultaneous determination of synthetic pigments in food by ultraviolet Spectrophotometry
Based on the theory that sythetic pigments can have optical absorption in visible light. Using this method to measure the content of various sythetic pigments in food products such as allura red, acid red, indigo, recovery rate reached 91.3%~108.8% with relative average deviations less than 10%. This method is with good accuracy and precision and can be used to detect the content of sythetic pigments in various food products such as candies, beverages, wine, soft drinks.