Standardization ofEchinacea purpureaExpressed Juice with Reference to Cichoric Acid and Alkamides
- 17 September 1999
- journal article
- Published by Taylor & Francis in Journal of Herbs, Spices & Medicinal Plants
- Vol. 6 (3), 51-62
- https://doi.org/10.1300/j044v06n03_05
Abstract
HPLC methods are described for the determination of cichoric acid and alkamides (dodecatetraenoic acid isobutylamides) with an aim towards standardization of Echinacea purpurea preparations prepared from expressed juice. Analysis of commercial samples reveals the present quality status of a selection of these preparations. Regarding alkamides, the content ranges from 0.1 to 1.8 mg/ml. The content of cichoric acid varies more dramatically (0.0–0.4%) likely due to inconsistent inhibition of the enzymatic degradation of cichoric acid.Keywords
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