三七及其伪品的近红外光谱鉴别法

Differential Identification of Genuine and Spurious Panax notoginseng by Near Infrared Spectra

目的:快速鉴别三七正品与伪品。方法:收集不同来源的三七及其常见伪品19批,利用近红外光谱仪采集其近红外光谱,用矢量归一加二阶导数法进行光谱预处理,采用因子化法建立鉴别模型。结果:另以10批市售样品进行验证,所建模型能准确无误地鉴别三七及其伪品。结论:近红外光谱法可快速、准确地进行三七的质量鉴别,可在药品快检车中推广应用。

OBJECTIVE： To establish a method for rapid identification of genuine and spurious Panax notoginseng. METHODS： 19 batches of samples including P.notoginseng of different origins and the common spurious P.notoginseng in China were collected. The infrared spectra of the samples were collected using near infrared spectrometer, then the spectra were pretreated by unitary vector plus second derivative method and the identification model was established by factorization method. RESULTS： The verification on 10 batches of commercial P. notoginseng samples showed that the established model can accurately identify the genuine and the spurious P.notoginseng .CONCLUSION： NIR spectrometry can quickly and accurately identify the quality of P. notoginseng ,and it can be applied in rapid drug testing vehiches for extensive use.