title: Electrochemistry of sinapine and its detection in medicinal plants.
abstract: Sinapine (O-sinapoyl choline) is a crucial component, with much medicinal value, of many dietary and medicinal plants. It has been found that sinapine gives an electrochemical response at a pyrolytic graphite electrode. The electrochemical properties of sinapine have been investigated. The peak current in the cyclic voltammogram is linear in the concentration range 1.9 x 10(-6)-2.5 x 10(-4) mol L(-1) and the limit of detection is 9.9 x 10(-7) mol L(-1). These properties can be applied to the determination of sinapine in extracts from three kinds of medicinal plant. The electrochemical method reported here is highly selective, sensitive, and stable.
authors.affiliation: Department of Biochemistry and National Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhou
authors.forename: Yinxi
authors.initials: Y
authors.lastname: Huang
authors.forename: Tomonori
authors.initials: T
authors.lastname: Hoshi
authors.forename: Yoshitomo
authors.initials: Y
authors.lastname: Kashiwagi
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Anzai
authors.forename: Genxi
authors.initials: G
authors.lastname: Li
mesh_terms: D002794:Choline / Q000031:analogs & derivatives* / Q000032:analysis; D004563:Electrochemistry; D006863:Hydrogen-Ion Concentration; D029686:Lepidium / Q000737:chemistry*; D015394:Molecular Structure; D009149:Mustard Plant / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D012680:Sensitivity and Specificity; D031226:Sinapis / Q000737:chemistry*
chemical_list: C005685:sinapine; D002794:Choline