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Stability testing on typical flavonoid containing herbal drugs

Heigl, D. ; Franz, Gerhard


The aim of the presented work was to examine possible changes in the flavonoid pattern of common flavonoid containing herbal drugs during long term and stress testing storage periods. HPLC fingerprint was used to demonstrate the differences in stability of individual flavonoid components. In addition, the total flavonoid content was determined according to the pharmacopoeial photometrical method. ...


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