PMID- 15894450 OWN - NLM STAT- MEDLINE DCOM- 20051115 LR - 20131121 IS - 0731-7085 (Print) IS - 0731-7085 (Linking) VI - 39 IP - 1-2 DP - 2005 Sep 1 TI - Separation and simultaneous determination of rutin, puerarin, daidzein, esculin and esculetin in medicinal preparations by non-aqueous capillary. PG - 125-31 AB - A simple method for the simultaneous determination of five bioactive components (rutin, puerarin, daidzein esculin and esculetin) in traditional medicinal preparations by non-aqueous capillary electrophoresis with UV detection has been developed for the first time. A running buffer composed of 15% acetonitrile, 2.5% acetic acid and 90 mM sodium cholate in methanol was found to be the most suitable for this separation. The limits of detection for five analytes were over the range of 0.050-1.216 microg ml(-1). The relative standard deviations (R.S.Ds.) of the migration times and the peak areas of the analytes were in the range of 1.3-2.9% and 2.2-2.7% (intraday), 1.7-1.9% and 2.8-3.6% (interday), respectively. In the tested concentration range, linear relationships (correlation coefficients: 0.9974 for rutin, 0.9976 for puerarin, 0.9981 for daidzein, 0.9972 for esculin and 0.9929 for esculetin) between peak areas and concentrations of the analytes were obtained. This method has been successfully applied to simultaneous determination of the five bioactive components with recoveries over the range of 89.4-107.4%. FAU - Li, Cunhong AU - Li C AD - Department of Chemistry, Lanzhou University, PR China. FAU - Chen, Anjia AU - Chen A FAU - Chen, Xiaofeng AU - Chen X FAU - Chen, Xingguo AU - Chen X FAU - Hu, Zhide AU - Hu Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Pharm Biomed Anal JT - Journal of pharmaceutical and biomedical analysis JID - 8309336 RN - 0 (Isoflavones) RN - 0 (Umbelliferones) RN - 1Y1L18LQAF (Esculin) RN - 5G06TVY3R7 (Rutin) RN - 6287WC5J2L (daidzein) RN - SM2XD6V944 (esculetin) RN - Z9W8997416 (puerarin) SB - IM MH - Electrophoresis, Capillary/*methods MH - Esculin/*analysis MH - Isoflavones/*analysis MH - Reference Standards MH - Reproducibility of Results MH - Rutin/*analysis MH - Sensitivity and Specificity MH - Spectrophotometry, Ultraviolet/*methods MH - Umbelliferones/*analysis EDAT- 2005/05/17 09:00 MHDA- 2005/11/16 09:00 CRDT- 2005/05/17 09:00 PHST- 2004/11/22 00:00 [received] PHST- 2005/03/30 00:00 [revised] PHST- 2005/03/30 00:00 [accepted] PHST- 2005/05/17 09:00 [pubmed] PHST- 2005/11/16 09:00 [medline] PHST- 2005/05/17 09:00 [entrez] AID - S0731-7085(05)00227-X [pii] AID - 10.1016/j.jpba.2005.03.018 [doi] PST - ppublish SO - J Pharm Biomed Anal. 2005 Sep 1;39(1-2):125-31. doi: 10.1016/j.jpba.2005.03.018.