Determination of Allura Red AC with a β-Cyclodextrin-Modified Carbon Paste Electrode

The problem of reducing the amount of the analyzed sample and waste during chemical analysis has recently received special attention. In this paper, a method relating to adsorptive stripping voltammetry, using a carbon paste electrode modified with beta-Cyclodextrin were used for Allura Red AC determination in soft drinks. The redox behavior of the dye was studied using the developed sensor, and a mechanism for its oxidation was proposed. Under optimal analysis conditions, the instrumental range of determined concentrations is 0.16-4.9 mu g/mL, and the LOQ is 0.21 mu g/mL with an RSD below 10%. The proposed methodology and developed sensor have been successfully applied to model solutions and soft drinks analysis.

Automated summary

In this paper, a method using adsorptive stripping voltammetry with a carbon paste electrode modified with beta-Cyclodextrin was used to determine Allura Red AC in soft drinks. The redox behavior of the dye was investigated and an oxidation mechanism was proposed. The proposed methodology and developed sensor showed good analytical performance and were successfully applied to soft drink analysis.