Analysis of Food Dyes in Commercial Soft Drinks Using Spectrophotometric Technique

Abstract:A visible spectrophotometric method was developed and validated for the analysis of fooddyes of Tartrazine and Sunset yellow in commercial soft drinks. The analysis was achieved at420 nm and 480 nm respectively for Tartrazine and Sunset yellow. The methods werevalidated over a linear range of 5 – 25 µg/ml for both dyes and successfully applied to thedetermination of Tartrazine and Sunset yellow with an average percent recovery of 98% –99%. The proposed methods were validated and can be used for analysis of food dyes ofTartrazine and Sunset yellow in commercial soft drinks.