title: [NIR Fingerprints of Different Medicinal Parts of Angelicae Sinensis Radix].
abstract: OBJECTIVE
  To investigate the spectrum characteristics of near-intrared dittuse retlectance spectroscopy (NIR) fingerprint of different medicinal parts of Angelicae Sinensis Radix.
  
  
  METHODS
  96 batches of samples were collected from 14 counties of Gansu Province and Yunnan Province. The NIR fingerprints were collected by integrated sphere. Similarity analysis and partial least square discriminant analysis(PLS-DA) were used to analyze the fingerprint.
  
  
  RESULTS
  The average spectrum of NIR fingerprint of different medicinal parts of Angelicae Sinensis Radix showed some differences; the absorbance in characteristic absorption was in a decreasing order of body > tail > head > whole. Most NIR fingerprint similarities of different medicinal parts of Angelicae Sinensis Radix exceeded 0. 95. The established model of PLS-DA could be used to accurately classify the medicinal parts of Angelicae Sinensis Radix. The differences of NIR fingerprints of different medicinal parts of Angelicae Sinensis Radix were mainly existing in the wave number ranges of 8,443 - 8,284 cm -1, 7,003 - 6,896 cm-1, 6,102 - 5,864 cm-1, 4,847 - 4,674 cm-1, and 4,386 - 4,208 cm-1.
  
  
  CONCLUSIONS
  The different medicinal parts of Angelicae Sinensis Radix have some differences in chemical components.
authors.forename: Ya-ya
authors.initials: YY
authors.lastname: Zhang
authors.forename: Zhi-rong
authors.initials: ZR
authors.lastname: Gu
authors.forename: Jun-xia
authors.initials: JX
authors.lastname: Ding
authors.forename: Yao-peng
authors.initials: YP
authors.lastname: Wang
authors.forename: Yu-jing
authors.initials: YJ
authors.lastname: Sun
authors.forename: Ya-li
authors.initials: YL
authors.lastname: Wang
mesh_terms: D029971:Angelica sinensis / Q000737:chemistry*; D002681:China; D018517:Plant Roots / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared