Study on cyclic voltammetric electrochemical fingerprint method for origin traceability of rice

Abstract

The origin traceability of geographical indication rice has always been highly concerned, this paper focused on the perspective of non-equilibrium samples, and the feasibility of using the cyclic voltammetric electrochemical fingerprint of rice to identify the origin of rice was studied. Jiansanjiang, Fangzheng and Xiangshui rice, whose production places were close, were selected, and the fingerprint collection method and data preprocessing method were explored respectively. Fingerprints with rich information, significant features were obtained by fast detection. Principal component analysis combined with support vector machine analysis were used to establish the discrimination model, the recognition accuracy of the prediction set was over 90.0%, showing a good application prospect. The electrochemical fingerprint of the non-equilibrium sample measured by real-time tracking of the reaction process could not only reflect the differences in the types and contents of the sample components, but also show the differences in the chemical properties of the components, providing a new idea for easy and accurate identification of food.