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《Chinese Journal of Spectroscopy Laboratory》 2011-04
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Qualitative Research on Radix Angelicae Sinensis from Different Origins in Different Harvest Time by Near Infrared Spectrum and Chemometrics

LI Bo-Xia WEI Yu-Hui XI Li-Li DUAN Hao-Gang WU Xin-An(Department of Pharmacy,The First Hospital of Lanzhou University,Lanzhou 730000,P.R.China)  
The 136 Radix Angelicae sinensis samples from different origins in different harvest time were fast,nondestructively and qualitatively detected by near infrared(NIR) spectrum technique with chemometrics.After the samples were crashed,the NIR spectrum were collected by fiber-optic in diffuse reflectance mode,and the spectrum were analyzed by principal component analysis(PCA),and the qualitative model of Radix Angelicae sinensis were established combining with random forests(RF),meanwhile,the effects of the different pretreatment methods,such as untreated,SNV + first derivative and SNV + second derivative,on identification cause were analyzed.The results of PCA and RF showed that the samples could separate at product time and origins,and Radix Angelicae sinensis were closed in the same product time,and the classification accuracy of random forests reached 94.85% with treatment by SNV + first derivative.The principle of NIR spectrum combining with RF was simple with simplicity of operation and high accuracy,and the origins and product time of Radix Angelicae sinensis were synchronously identified.
【Fund】: 甘肃省新药临床前研究重点实验室基金(GSTFT-0803)
【CateGory Index】: O433.4
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