Determination of Tartrazine and Sunset Yellow in Foodstuffs by Derivative Spectrophotometric Method

Abstract

A relatively fast method was applied for determination of two synthetic food colours, tartrazine and sunset yellow, in three different kinds of foodstuffs: juice powders, flavoured juices and soft drinks. Samples preparation included degassing and/or centrifugation after dissolving the samples and showed high throughput. All studied samples showed dye levels in conformity with Syrian legislation. It was also observed that different producers use different colours and/or levels in similar products of the same flavour.