title: Investigation of the chemico-physical characteristics of the active components in the Chinese herb Gastrodia elata Bl. by capillary zone electrophoresis.
abstract: A CE method for investigating the chemico-physical characteristics of the active components of low molecular weight in Gastrodia elata Bl. is described. First, the dissociation constants of five active components were determined based on the relation between the effective mobility of the solutes and the buffer pH value. Second, an equation that describes the relation of the migration time and the molecular weight was developed and used to predict the migration order and to calculate the electroosmotic velocity. The results predicted by theory agreed well with that from experiments.
authors: Department of Chemistry, Hebei University, Baoding, P R China.
authors: Dexian
authors: D
authors: Wang
authors: Gengliang
authors: G
authors: Yang
authors: Baohui
authors: B
authors: Li
authors: Zhiwei
authors: Z
authors: Li
authors: Yi
authors: Y
authors: Chen
mesh_terms: D002627:Chemistry, Physical / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000737:chemistry*; D019075:Electrophoresis, Capillary / Q000379:methods; D010936:Plant Extracts / Q000032:analysis / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D010936:Plant Extracts