title: Rapid determination of aristolochic acid I and II in Aristolochia plants from different regions by beta-cyclodextrin-modified capillary zone electrophoresis.
abstract: Chinese herbs nephropathy (CHN) is a kind of severe kidney disease caused by excessively taking aristolochic acid (AA). Hence, it is essential for health security and quality control of related herbal medicines to develop an efficient method for separation and determination of these two important components in Traditional Chinese Medicines. In this study, a rapid capillary zone electrophoresis (CZE) method using 120 mM sodium borate buffer containing 10 mM beta-cyclodextrin (beta-CD) as modifier was firstly developed for the analysis of AA-I and AA-II within 4min in some medicinal plant samples. The separation conditions including pH of running buffer, CD content in the buffer system, applied voltage and capillary temperature were systematically optimized, and two kinds of aristolochic acids in 37 herbal samples of Aristolochia plants were successfully determined with high separation efficiency, satisfactory sensitivity, repeatability and recovery. The result indicated high variability in the contents of aristolochic acids due to different species and regions. The comparison of CZE method with high performance liquid chromatography (HPLC) was also discussed.
authors.affiliation: The Key Lab of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Suxuan
authors.initials: S
authors.lastname: Gong
authors.forename: Dawei
authors.initials: D
authors.lastname: Wen
authors.forename: Baoquan
authors.initials: B
authors.lastname: Che
authors.forename: Yiping
authors.initials: Y
authors.lastname: Liao
authors.forename: Huwei
authors.initials: H
authors.lastname: Liu
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Feng
authors.forename: Shilin
authors.initials: S
authors.lastname: Hu
mesh_terms: D000465:Algorithms; D030022:Aristolochia / Q000737:chemistry*; D034341:Aristolochic Acids / Q000032:analysis*; D002021:Buffers; D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D019075:Electrophoresis, Capillary; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007536:Isomerism; D012015:Reference Standards; D015203:Reproducibility of Results; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D047392:beta-Cyclodextrins / Q000737:chemistry
chemical_list: D034341:Aristolochic Acids; D002021:Buffers; D007202:Indicators and Reagents; D012997:Solvents; D047392:beta-Cyclodextrins; C000228:aristolochic acid I; C042310:aristolochic acid II