title: [Quality of dihuang (Rehmannia spp.)].
abstract: In this paper, the contents of catalpol, water-extract and alcohol-extract materials, ash, total reducing sugar and inorganic elements in Dihuang from different habitats have been measured. The result shows that Huai Dihuang, the genuine drug, excels all those from other habitats in quality. The quality of commercial dry Dihuang may be related closely to the production area, storage time, etc.
authors.affiliation: Henan Academy of Traditional Chinese Medicine, Zhengzhou.
authors.forename: H
authors.initials: H
authors.lastname: Du
authors.forename: X
authors.initials: X
authors.lastname: Zhao
authors.forename: G
authors.initials: G
authors.lastname: Liu
authors.forename: F
authors.initials: F
authors.lastname: Liu
mesh_terms: D002118:Calcium / Q000032:analysis; D002241:Carbohydrates / Q000032:analysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D005960:Glucosides / Q000032:analysis*; D057888:Iridoid Glucosides; D039823:Iridoids; D010758:Phosphorus / Q000032:analysis; D011714:Pyrans / Q000032:analysis*; D011786:Quality Control; D014131:Trace Elements / Q000032:analysis
chemical_list: D002241:Carbohydrates; D004365:Drugs, Chinese Herbal; D005960:Glucosides; D057888:Iridoid Glucosides; D039823:Iridoids; D011714:Pyrans; D014131:Trace Elements; C078040:catalpol; D010758:Phosphorus; D002118:Calcium