typhaneoside and 3-methylquercetin

To work out quality standards for Pollen Typhae(Puhuang).. Isorhamnetin-3-O-neohesperidoside, typhaneoside, isorhamnetin and beta-sitosterol in Pollen Typhae marketed in ten cities of China were identified by TLC. The contents of isorhamnetin-3-O-neohesperidoside and typhaneoside were determined by HPLC.. The method is sensitive and specific for identifying isorhamnetin-3-O-neohesperidoside, typhaneoside, isorhamnetin and beta-sitosterol. The linear ranges of isorhamnetin-3-O-neohesperidoside and typhaneoside were 0.188-0.940 microgram with and average recovery of 97.77%; and 0.164-0.820 microgram with an average recovery of 98.42% respectively.. The method can be used both qualitatively and quantitatively as standards for the quality control of Pollen Typhae.

Topics: Drugs, Chinese Herbal; Flavonols; Glycosides; Plants, Medicinal; Pollen; Quality Control; Quercetin; Typhaceae