title: Coulometric titration of total flavonoids in Sophora japonica L.
abstract: A method for the determination of total flavonoids in Sophora japonica L. by coulometric titration was developed. The titration was carried out in a mixture of 1 mol/L KBr--2 mol/L HCl (1:1) and bromine was generated at the anode, rutin reacted with two moles of bromine with an n value of 4. The advantages of this method are simple and rapid, it can be used to analyze small amount of sample.
authors.forename: L X
authors.initials: LX
authors.lastname: Xu
authors.forename: A R
authors.initials: AR
authors.lastname: Liu
authors.forename: X Q
authors.initials: XQ
authors.lastname: Zhang
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis*; D004572:Electrolysis; D005419:Flavonoids / Q000032:analysis*
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids