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Micellar Electrokinetic Chromatography with Laser-Induced Fluorescence Detection for Separation of Red and Yellow Historical Dyes
From the first issue of 2016, Chromatography has changed its name to Separations.

Chromatography 2014, 1(1), 1-8; doi:10.3390/chromatography1010001

Oroxylum indicum Seeds—Analysis of Flavonoids by Micellar Electrokinetic Chromatography

Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
* Author to whom correspondence should be addressed.
Received: 5 January 2013 / Revised: 16 February 2013 / Accepted: 19 February 2013 / Published: 25 February 2013
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Flavonoids are bioactive constituents in Oroxylum indicum seeds, an Asian traditional remedy used for the treatment of respiratory infections. In this study the first capillary electrophoretic method for their determination is presented. By using a 25 mM borax buffer at pH 9.2 containing 10 mM SDS as detergent, the determination of seven flavonoids was feasible in only 13 min. Method validation confirmed that the assay is in accordance with ICH requirements in respect to linearity, selectivity, sensitivity, accuracy and precision. Quantitative results revealed that baicalein-7-O-gentiobioside is the most abundant flavonoid in the drug (1.19 to 5.33%), followed by other baicalein derivatives (7-O-glucoside, 7-O-glucuronide). These observations were in good qualitative and quantitative agreement with LC-MS results.
Keywords: Oroxylum indicum; seeds; capillary electrophoresis; MEKC; flavonoids Oroxylum indicum; seeds; capillary electrophoresis; MEKC; flavonoids
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Krüger, A.; Ganzera, M. Oroxylum indicum Seeds—Analysis of Flavonoids by Micellar Electrokinetic Chromatography. Chromatography 2014, 1, 1-8.

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