Analytical Sciences

Electrochemical Profile Recording for Pueraria Variety Identification

Yangyang WANG,* Bo PAN,** Mingjun ZHANG,* Xinpeng DU,* Weihong WU,* Li FU,* Qinwei ZHOU,* and Yuhong ZHENG***

*College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, P. R. China
**Centre for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, P. R. China
***Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, P. R. China

The rapid identification of plant variety is valuable in both academic studies and crop production. However, rapid and accurate identification has been difficult because many varieties have very similar morphological characteristics and are susceptible to the effects of the growing environment. In this work, we established an electrochemical method for recording the electro-active profile of compounds in plant tissue. Because the chemical composition of different varieties is largely controlled by their genes, rather than a growing environment, this method has considerable potential for variety identification. Three varieties of Pueraria with sixteen locations were collected for confirming the feasibility of the proposed methodology. Principal component analysis and peak ratio analysis have been used for grouping the sample data. The results indicate the electrochemical profiles of three varieties can be distinguished using their voltammetric data.

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