Food dyes screening using electrochemistry approach in solid state: the case of sunset yellow dye electrochemical behavior

• Published in: Journal of solid state electrochemistry Vol. 24; no. 11-12; pp. 2907 - 2921
• Main Authors: Durigon, Ana Maria Munaretto, da Silveira, Géssica Domingos, Sokal, Flávio Roberto, Pires, Roni Anderson Capa Verde, Dias, Daiane
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-11-2020; Springer Nature B.V
• Subjects: Analytical Chemistry; Azo dyes; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Diagnostic systems; Dyes; Electrochemical analysis; Electrochemistry; Energy Storage; Food; Food processing; Microparticles; Original Paper; Physical Chemistry; Screening; Solid state; Square waves; Voltammetry; Screening; Solid state; voltammetry; Electrochemical pathways; Sunset yellow; Food dyes
• ISSN: 1432-8488; 1433-0768
• DOI: 10.1007/s10008-020-04678-z

Concerning the importance of the identification and characterization of food dyes in food science, this work presents a screening method using voltammetry of immobilized microparticles for identification in solid state of sunset yellow, tartrazine yellow, brilliant blue, indigotine, and erythrosine in food matrices. Different aqueous supporting electrolyte were investigated for screening purpose and NaCl 0.1 mol L
−1
showed to be suitable for evaluating dyes in solid state. By using square wave voltammetry as detection mode was possible to establish qualitative diagnostic criteria for identification of dyes in commercials powder of food dyes samples using both anodic and cathodic scan. Moreover, based on the solid-state electrochemistry profile and due to the lack of information about the electrochemical behavior of these compounds in solid state, some oxi/reduction pathways could be elucidated, and special attention was given to the case of sunset yellow dye.