title: [Determination of ursolic acid of Liuwei Dihuangwan simulation samples by NIR].
abstract: OBJECTIVE
  Determine the content of ursolic acid of Liuwei Dihuangwan.
  
  
  METHODS
  Using NIR with PLS, PCA-BPANN and WT-BPANN.
  
  
  RESULTS
  The predication recovery were 100.7%, 100.6%, 100.1%, and the RSD were 5.42%, 6.49%, 6.52% respectively.
  
  
  CONCLUSIONS
  NIR can be used in the determination of ursolic acid, which set up the foundation of on-line control of traditional Chinese medicine.
authors.affiliation: Pharmaceutical College of Henan University, Kaifeng 475001, China. sl@henu.edu.cn
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Song
authors.forename: Bing-Yi
authors.initials: BY
authors.lastname: Fan
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Xu
authors.forename: Peng-Wei
authors.initials: PW
authors.lastname: Lu
authors.forename: Bing-Ren
authors.initials: BR
authors.lastname: Xiang
mesh_terms: D029768:Cornus / Q000737:chemistry*; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control; D019265:Spectroscopy, Near-Infrared; D014315:Triterpenes / Q000032:analysis*; D000097245:Ursolic Acid
chemical_list: D004338:Drug Combinations; D004365:Drugs, Chinese Herbal; D014315:Triterpenes; D000097245:Ursolic Acid; C042579:Liuwei Dihuang Decoction