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Rapid assessment of beta-asarone content of Acorus calamus by micellar electrokinetic capillary chromatography.

Electrophoresis (2005-02-17)
Kim M Hanson, Melissa Gayton-Ely, Lisa A Holland, Peter S Zehr, Björn C G Söderberg
ABSTRACT

This report outlines a rapid, reproducible method for the determination of beta-asarone, a known carcinogen, using micellar electrokinetic capillary chromatography (MEKC)-UV-vis absorbance and a simple alcohol extraction. The MEKC method is based on a running buffer comprised of 100 mM sodium dodecyl sulfate (SDS), pH 10. The method is reproducible and provides baseline separation of alpha-asarone and beta-asarone. This protocol was used to determine the beta-asarone content of Acorus calamus rhizome of a diploid variety harvested from the wetlands of the United States and the triploid variety from India obtained commercially. The results indicate raw product that originated from India contained 4.4% w/w beta-asarone, while that from the United States contained 0.2% w/w beta-asarone. Neither sample contained detectable concentrations of alpha-asarone. This is the first report of the use of MEKC to determine asarone in a natural source.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
CHES, ≥99.0% (titration)
Sigma-Aldrich
CHES, BioXtra, ≥99.0% (titration)
Sigma-Aldrich
CHES, BioUltra, ≥99.5% (T)

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