[Characteristic chromatographic profile of Zanthoxylum niridum].

Objective: To establish the characteristic fingerprint of Zanthoxylum nitidum by HPLC, and to provide a reference for the quality control of Z. nitidum in the market.

Method: The established HPLC characteristic fingerprint of Z.

[Application of two FTIR pattern recognition methods to the Zanthoxylum nitidum geographical origins determination].

In the present work, the authors explored a rapid method of the Zanthoxylum nitidum geographical origins determination. Based on Fourier transform infrared spectroscopy (FTIR) technology, the band of 1 800-400 cm(-1) which is the IR fingerprint of Zanthoxylum nitidum, the Fisher ratio and the soft independent modeling of class analogies (SIMCA) were used to build a classification model. Respectively, four kinds of Zanthoxylum nitidum in the Guangxi region were detected by the model, and the model was verified by calculating their recognition rate and rejection rate.