The present work aims to prepare a Carmoisine A polymer film on the surface of a disposable pencil graphite electrode to detect Tartrazine in the presence of Vanillin. The rise
21in surface area of the modified electrode using potassium ferrocyanide system through a comparative with bare electrode employing cyclic voltammetric technique confirms the catalytic film on the surface of the pencil graphite electrode.  The prepared electrode was used to analyze culinary ingredients tartrazine and vanillin, both of which can cause severe health issues when consumed in excess. Tartrazine is a food coloring agent, while vanillin serves as a flavoring agent. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques were employed for the electrochemical analysis of tartrazine on Poly(CARA)-modified pencil graphite electrode (MPGE). The CV method was used to study the effects of scan rate, pH, and simultaneous analysis, while the DPV method was employed for investigating concentration effects and interference. The electrode process suggests an adsorption-controlled mechanism and the pH study indicates that electrons and protons are equally shared during the reaction. The simultaneous analysis demonstrates that Poly(CARA)-MPGE can detect both tartrazine and vanillin in a binary food additive mixture. The selectivity study shows that tartrazine and vanillin can be quantified in the binary mixture at different concentrations. The limits of detection (LOD) and quantification (LOQ) for tartrazine on Poly(CARA)-MPGE were 0.852 µM and 2.84 µM, respectively, with a good stability of 89% over 25 cycles.