激光拉曼光谱法无损分析鉴别川贝母

The Analysis and Identification of Fritillaria Cirrhosa by Raman Spectra

利用激光拉曼光谱技术快速、准确鉴定川贝母与其混淆品。根据药材所含的化学成分不同,致使药材的拉曼峰不同,测定多个川贝母样本及混淆品的拉曼图谱。川贝母的拉曼光谱图在442,480,863,941,1 083,1 129,1 342,1 463,2 910cm-1处出现强峰,在111,302,360,409,527,579,618,718,767,1 052,1 083,1 207,1 261cm-1处出现了较明显的拉曼峰;构建了川贝母的拉曼指纹图谱,可与其混淆品土贝母、平贝母、光慈姑、草贝母进行区分;采用激光拉曼光谱技术可快速无损分析鉴别川贝母。

Laser Raman spectrum technology was used to distinguish fritillaria cirrhosa from its adulterants rapidly and accurately.The study is based on that different traditional Chinese medicine contains different chemical compositions,and the differences could be displayed in Raman spectra.The Raman spectra of fritillaria cirrhosas shows that several characteristic strong peaks could be found at 442,480,863,941,1 083,1 129,1 342,1 463and 2 910cm-1,and a few obvious peaks appear at 111,302,360,409,527,579,618,718,767,1 052,1 083,1 207and 1 261cm-1.According to the Raman spectra,a Raman fingerprint of fritillaria cirrhosa was set up,which could be used to distinguish its adulterants.This analysis could be used in identifying fritillaria cirrhosa rapidly,accurately and nondestructively.