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Determination of the six major flavonoids in Scutellariae Radix by micellar electrokinetic capillary electrophoresis

✍ Scribed by Ying-Mei Liu; Shuenn-Jyi Sheu

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
486 KB
Volume
288
Category
Article
ISSN
0003-2670

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✦ Synopsis

A capillary electrophoretic method for determining the six flavonoids in Scutellariae Radii i.e., baicalin, baicalein, wogonin 7-0-glucuronide, wogonin, oroxylin A 7-0-glucuronide and oroxylin A, was developed. A buffer solution composed of 20 mM sodium dodecyl sulphate, 10 mM sodium dihydrogenphosphate and 12.5 mM sodium borate was found to be the most suitable electrolyte for this separation, whereby the contents of the six flavonoids in crude Scutellariae Radix could easily be determined within about 25 min. The effects of surfactant concentration, pH and temperature on the migration behaviour of the solutes were studied.

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