Electrochemistry of sinapine and its detection in medicinal plants.
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.
Zhou
Hui
H
Department of Biochemistry and National Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China.
Huang
Yinxi
Y
Hoshi
Tomonori
T
Kashiwagi
Yoshitomo
Y
Anzai
Jun-Ichi
J
Li
Genxi
G
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*
C005685:sinapine; D002794:Choline