Sensitive and selective nitrite sensor based on CuCo2O4-rGO nanocomposite synthesized by one-pot electrochemical method in pastırma

In this study, CuCo₂O₄-rGO nanostructures were synthesized by a one-pot electrochemical method on the surface of Pencil Graphite Electrode (PGE) for nitrite determination in pastırma, a traditional meat product. The developed modified electrode was used to determine the amount of nitrite in pastırma samples obtained from three different brands in the Turkish market. When the nitrite values obtained by the electrochemical method were compared with the spectrophotometric method, they showed 91.20 % to 100 % agreement. In addition, the physicochemical properties of pastırma samples, such as pH, moisture, protein, fat, and ash, were analysed, and it was determined that pH and moisture values are critical parameters for product quality. These results show that the developed electrode provides a practical and sensitive method for nitrite sensing.