title: Simultaneous determination of four tanshinones in Salvia miltiorrhiza by pressurized liquid extraction and capillary electrochromatography.
abstract: A pressurized liquid extraction (PLE) and CEC were developed for the simultaneous determination of four tanshinones (dihydrotanshinone I, cryptotanshinone, tanshinone I, and tanshinone IIA) in Salvia miltiorrhiza. High extraction efficiency (>98.5%) was achieved under the optimum PLE conditions. A good separation was obtained by using a Hypersil C18 capillary (3 microm, 100 microm/25 cm) with a mixture of 30 mM Tris-HCl (pH 8.5)-ACN (1:3, v/v) as BGE solution running at 20 kV and 20 degrees C within 12 min. All the calibration curves showed good linearity (r2 >0.9958) within test ranges. The developed method showed good repeatability for the quantification of four investigated components in S. miltiorrhiza with intra- and interday variations of less than 4.4 and 6.8%, respectively. The validated method was successfully applied to quantify four tanshinones in S. miltiorrhiza, which is helpful to control the quality of S. miltiorrhiza.
authors.affiliation: Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Shao-Ping
authors.initials: SP
authors.lastname: Li
authors.forename: Feng-Qing
authors.initials: FQ
authors.lastname: Yang
authors.forename: Yi-Tao
authors.initials: YT
authors.lastname: Wang
mesh_terms: D045784:Abietanes; D053801:Capillary Electrochromatography / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification*; D005663:Furans; D015394:Molecular Structure; D010616:Phenanthrenes / Q000032:analysis*; D010936:Plant Extracts; D011809:Quinones; D015203:Reproducibility of Results; D027561:Salvia miltiorrhiza / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D045784:Abietanes; D004365:Drugs, Chinese Herbal; D005663:Furans; D010616:Phenanthrenes; D010936:Plant Extracts; D011809:Quinones; C021751:tanshinone; C000713095:dihydrotanshinone I; C037886:cryptotanshinone