[Determination of catechin and its analogues in Spatholobus suberectus by RP-HPLC].
OBJECTIVE
To develop a method for determination of catechin and its analogues in Spatholobus suberectus.


METHODS
Gallocatechin, catechin and epicatechin are used as reference substances. Chromatographic assay is performed on a C18 colum. The mobile phase is composed of methanol and acetic acid solution with gradient elution. Velocity of flow is 0.8 mL x min(-1) and the detection wavelength is 270 nm.


RESULTS
The calibration curves of gallocatechin, catechin and epicatechin are linear within the range of 0.397 microg to 1.986 microg, 0.404 microg to 2.019 microg and 0.405 microg to 2.024 microg. The recoveries of them are 97.2%, 100.8% and 98.8%, and the RSD are 1.7%, 2.4%, 2.4% (n = 5).


CONCLUSIONS
The method is simple, rapid and suitable for the determination of catechin and its analogues in S. suberectus.
Liu
Chao
C
Institute of Material Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
Ma
Lin
L
Chen
Ruo-Yun
RY
Liu
Ping
P
D002392:Catechin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D007887:Fabaceae / Q000737:chemistry*; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control
D002392:Catechin; C057580:gallocatechol