FTIR对不同产地陈皮的鉴别研究

Identification of Pericarpium Citri Reticulatae from Different Regions Using FTIR

采用傅里叶变换红外光谱法(FTIR)分析鉴别了7个不同产地的陈皮挥发油。结果表明,在红外图谱中,产自广东、广西的陈皮挥发油具有2-甲氨基-苯甲酸甲酯成分的一组相关峰;而两广区域外的陈皮挥发油在红外光谱图上观察不到该成分的特征吸收峰。其中,两广区域内新会陈皮与非新会陈皮在1 690与1 644 cm-1处的峰高比值有明显差异。该指纹特征可作为陈皮道地药材的一种简单、快速的鉴别依据。

The essential oil of Pericarpium Citri Reticulatae from seven different regions were identified by Fourier transform infrared spectroscopy （FTIR） in the present paper. The result indicated that it＇s easy to find a fingerprint character of 2-methyaminomethyester benzoic acid in the FTIR spectra of essential oil of the Pericarpium Cirri Reticulataes collected from Guangdong and Guangxi, but it can＇t be seen in the FTIR spectra of the samples from other regions, and especially, there is a obvious difference between Xinhui and non-Xinhui regions at 1 690 and 1 644 cm^-1 in the FTIR spectra. Therefore, the simple, fast and accurate property of FTIR is a good foundation for the identification of Pericarpiurn Cirri Reticulatae using its fingerprint character.