title: [Identification of categories of Radix Rehmannia by IR spectroscopy and compare software].
abstract: OBJECTIVE
  To identify the categories of Radix Rehmannia between the wild and the planting, different stored time, (gained in 2000,2002) , trueborn place (Henan) and no-trueborn places.
  
  
  METHODS
  FTIR combined compare software, and the data was dealt with the means of normalization in computer.
  
  
  RESULTS
  The wild and the planting have evident difference. They can be identified for the different stored-time completely. The identification percentage between trueborn place and no-truedborn places is more than 90%.
  
  
  CONCLUSIONS
  The method is fast, accurate.
authors.affiliation: Henan College of TCM, Zhengzhou 450008.
authors.forename: Yan
authors.initials: Y
authors.lastname: Bai
authors.forename: Suqin
authors.initials: S
authors.lastname: Sun
authors.forename: Kefeng
authors.initials: K
authors.lastname: Fan
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Yuxia
authors.initials: Y
authors.lastname: Lou
mesh_terms: D004356:Drug Storage; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D007091:Image Processing, Computer-Assisted; D010598:Pharmacognosy; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011208:Powders; D011786:Quality Control; D032267:Rehmannia / Q000737:chemistry* / Q000145:classification; D027343:Rhizome / Q000737:chemistry; D012984:Software; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; D011208:Powders