An investigation of new electrochemical sensors for curcumin detection: a mini review

Curcumin (CM) is a natural pigment with a crystalline structure and is the most important curcuminoid in turmeric. CM is effective in treating a wide range of diseases, especially cancers, owing to its antioxidant, anti-proliferative, antibacterial and anti-inflammatory properties. Electrochemical techniques are powerful and widely used analytical methods that provide valuable information about electrochemical systems. Their dedicated performance, as well as their ability to provide very low detection limits, are the most important benefits of these methods. Electrochemical sensors have been used as good tools for the detection of CM owing to their simplicity, accuracy, high sensitivity and selectivity, and reasonable price. However, owing to the poor response of this compound, it is difficult to detect it directly at the surfaces of bare electrodes. Various modifiers have been used to overcome this problem and to increase the sensitivity and selectivity of CM detection sensors. In this research, various types of bare and modified electrodes used in the detection of CM are briefly investigated and their performance is compared scrupulously.