A Sensitive Electrochemical Sensor Due to Novel Bionanocomposite to Determine Tartrazine

A novel composite was fabricated utilizing gold nanoparticle-modified (AuNPs) reduced graphene oxide (rGO) composite and acetoneextracted propolis (AEP) for electrochemical sensors on screen-printed electrodes (AuNPs/rGO/AEP/SPE) using electrochemical approaches for tartrazine (Tz) detection. Electrochemical experiments and scanning electron microscopy (SEM) were applied for electrode characterization. The diagrams of provided cyclic voltammetry (CV) indicated that the highest Tz oxidation catalytic activity was provided for AuNPs/rGO/AEP/SPE followed by rGO/AEP/SPE, GO/AEP/SPE, and SPE. Utilizing differential pulse voltammetry (DPV) techniques in the range of 0.004 to 2 μM with a detection limit of 3 nM, the range for Linear Tz calibration curves were provided at AuNPs/rGO/AEP/SPE. The findings of this study showed that AuNPs/rGO/AEP/SPE could be applied for Tz detection with high stability, low detection limit, and high sensitivity, which appear to be helpful in the manufacture of portable sensors for use in the food industry.