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Capillary electrophoresis of tetrahydroberberine alkaloids: chiral separation by cyclodextrin-modified micellar electrokinetic chromatography

✍ Scribed by Junko Koyama; Izumi Toyokuni; Akari Kino; Kiyoshi Tagahara

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
85 KB
Volume
10
Category
Article
ISSN
0958-0344

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✦ Synopsis

A micellar electrokinetic capillary chromatographic method for the separation of tetrahydroberberine alkaloids was established. An electrolyte solution of 0.02 M sodium dodecyl sulphate (SDS) in 0.03 M borate buffer (pH 9) containing 10% acetonitrile, and an applied voltage of 20 kV, were found to be the appropriate conditions for this separation. Enantiomers of the tetrahydroberberine alkaloids were separated by the addition of g-cyclodextrin (g-CD) to the SDS micelle solution with a maximum analysis time of 11 min. The resolution was optimized by changing the concentration of g-CD. The method described is simple, rapid and reproducible.

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