title: [Rapid identification of cortex dictamni pieces and its counterfeit alangium Chinense by spectral imaging method].
abstract: 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.
  
  
  METHODS
  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 x mm(-1). The characteristic spectrum curves were picked up from spectral cube and principal analysis method was used to analyze the results.
  
  
  RESULTS
  The identification results by the spectral imaging method accorded well with the results by the traditional biology and chemistry analysis method.
  
  
  CONCLUSIONS
  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.
authors.affiliation: College of Science, South China Agricultural University, Guangzhou 510640, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Qichang
authors.initials: Q
authors.lastname: Pang
authors.forename: Ji
authors.initials: J
authors.lastname: Ma
authors.forename: Chuanming
authors.initials: C
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Qingxia
authors.initials: Q
authors.lastname: Meng
mesh_terms: D032604:Alangiaceae / Q000737:chemistry*; D011786:Quality Control; D027821:Rutaceae / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*