title: Study on separation of aristolochic acid I and II by micellar electrokinetic capillary chromatography and competition mechanism between SDS and beta-cyclodextrin.
abstract: In this study, a rapid MEKC method using 40 mM sodium borate buffer containing 50 mM SDS as surfactant was developed for the analysis of aristolochic acid (AA) in Aristolochia plants. Baseline separation of AA-I and AA-II was achieved within 3 min with high separation efficiency, satisfactory sensitivity, repeatability, and recovery. Resolution between AA-I and AA-II is above 5 and great performance with higher than 200,000 theoretical plate numbers was obtained. The detection limits (based on 3 S/N) were both 1.0 microg/mL. Two kinds of AA in 35 herbal samples of Aristolochia plants were successfully determined. The competition mechanism between beta-CD and SDS was also investigated by changing the content ratio of beta-CD and SDS.
authors.affiliation: The Key Lab of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Zheng
authors.initials: Z
authors.lastname: Chen
authors.forename: Yiping
authors.initials: Y
authors.lastname: Liao
authors.forename: Huwei
authors.initials: H
authors.lastname: Liu
mesh_terms: D000998:Antiviral Agents / Q000032:analysis / Q000302:isolation & purification; D030022:Aristolochia / Q000737:chemistry*; D034341:Aristolochic Acids / Q000032:analysis* / Q000302:isolation & purification; D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D000998:Antiviral Agents; D034341:Aristolochic Acids; D047392:beta-Cyclodextrins; D012967:Sodium Dodecyl Sulfate; C000228:aristolochic acid I; C042310:aristolochic acid II; C031215:betadex