Electrochemical determination of kojic acid in food samples using a modified carbon paste platform

Kojic acid is a small natural substance with wide application in cosmetic products and food samples such as skin whitening, soy sauce and vegetables. Kojic acid exhibit antibacterial (kill certain bacteria) and antifungal properties when was used in food and cosmetic products [1]. On the other hand, application of kojic acid can be cause an allergic reaction and cause unintended skin color changes. Therefore, it is very important for develop a highly sensitive method for the determination of kojic acid in trace level. In this research, we fabricated a carbon paste electrode modified with CuO nanoparticles and ionic liquids as highly powerful toll for analysis of kojic acid in the concentration range 0.02-450 μM with detection limit 9 nM. The proposed sensor was successfully used for determination of kojic acid in food samples.