光谱成像技术快速鉴别白鲜皮及其伪品八角枫

Rapid identification of Cortex Dictamni pieces and its counterfeit alangium Chinense by spectral imaging method

目的:运用光谱成像技术快速鉴别白鲜皮及其伪品八角枫,为其质量控制提供新的方法。方法:应用电可控液晶滤光光谱成像装置,检测白鲜皮对照品和5种不同市售来源的白鲜皮饮片及伪品八角枫。光谱分辨率为5 nm,光谱覆盖范围为405～680 nm,空间分辨率为50 lp.mm-1。提取白鲜皮特征光谱曲线,采用主成分分析等方法解析,用于白鲜皮及其伪品八角枫的鉴别。结果:光谱成像技术快速检测白鲜皮及其伪品八角枫,其结果与性状、显微及理化鉴定结果相吻合。结论:光谱成像分析技术可用于中药白鲜皮的鉴别,操作方法简便、快速、无损。

Objective： The spectral imaging method was used to quickly identify the Cortex Dictamni pieces and its counterfeit alangium Chinese,which is a potential method would be applied to control the quality of the Cortex Dictamni pieces.Method： Standard sample,5 cortex dictamni samples and its counterfeit alangium Chinese of different sources were tested by the liquid crystal imaging instrument.The spectrum resolution was 5 nm,the spectral range was from 405 nm to 680 nm,and the spatial resolution was 50 lp·mm-1.The characteristic spectrum curves were picked up from spectral cube and principal analysis method was used to analyze the results.Result： The identification results by the spectral imaging method accorded well with the results by the traditional biology and chemistry analysis method.Conclusion： The spectral imaging analysis method can be used to identify the cortex dictamni pieces and its counterfeit alangium Chinense.The testing course is convenient,quick and noninvasive.