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Stability control of valerian ground material and extracts: a new HPLC-method for the routine quantification of valerenic acids and lignans

Goppelt-Struebe, M. ; Franz, Gerhard


A new HPLC-method for the separation of medium polar and nonpolar compounds in preparations of Valeriana officinalis was established for stability control. Powdered valerian root and a commercial ethanolic valerian extract were investigated for apparent differences in stability behaviour. Storage conditions were chosen according to the ICH-guidelines. Changes in composition of valerenic acids and ...


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