High-performance liquid chromatographic determination of cardenolides in Digitalis leaves after solid-phase extraction |
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Authors: | Hans Wiegrebe Max Wichtl |
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Institution: | Institut für Pharmazeutische Biologie, Philipps-Universität, Deutschhausstrasse 17 1/2, W-3550 Marburg/Lahn Germany |
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Abstract: | For HPLC analysis of cardenolide glycosides of Digitalis lanata the separation of the main compounds from other constituents is useful. An improved method for doing this, based on solid-phase extraction on a C18 modified poly(styrene-divinylbenzene) polymer, is described. The presented assay permits quantitative estimation of more than 50 cardenolides in about 2 mg of dried leaf powder of Digitalis lanala with high speed and accuracy. |
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