title: [Studies on X-ray diffraction pattern of traditional Chinese medicinal materials].
abstract: Traditional Chinese medicine(TCM) as prescribed by Chinese traditional physicians is usually available as "decoction slices" which calls for a ready method for assessment of quantity or even genuineness. Three groups of TCM drugs (radix Rubiae, bulbus Fritillariae and rhizoma Dioscoreae) were selected by using powder X-ray diffraction analysis with complete absorption profile. Topological regularity and characteristic peaks of the absorption profile were obtained as fingerprint in X-ray diffraction diagrams of the pertinent medicinal materials. We have discovered the similarities of 3 radix Rubiae samples gathered from different localities and their differences with Rubia tinctorum, the similarities and differences between 7 species belonging to Fritillaria Genus, the similarities of 2 rhizoma Dioscoreae samples from different localities and their differences with 2 counterfeits. The result points to a promising prospect in achieving an objective assessment of genuineness at TCM drugs.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College.
authors.forename: Y
authors.initials: Y
authors.lastname: Lu
authors.forename: Q T
authors.initials: QT
authors.lastname: Zheng
authors.forename: N
authors.initials: N
authors.lastname: Wu
authors.forename: G L
authors.initials: GL
authors.lastname: Wang
authors.forename: J G
authors.initials: JG
authors.lastname: Tian
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.forename: D C
authors.initials: DC
authors.lastname: Chen
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D019668:Liliaceae / Q000737:chemistry*; D019684:Magnoliopsida / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013045:Species Specificity; D014961:X-Ray Diffraction
chemical_list: D004365:Drugs, Chinese Herbal