VARIATION IN CONTENTS OF HYPERICIN AND FLAVONOIDS IN HYPERICUM MACULATUM(HYPERICACEAE) FROM LITHUANIA

摘要

This study, carried out in 2004-2005, describes the variation of hypericin and flavonoid con-tents in different samples of Hypericum maculatum. Flowering tops of H. maculatum werecollected and analysed for hypericin and flavonoids using HPLC. The contents of hypericinranged from 0.35-0.95 mg/g; flavonoid contents varied as follows: hyperoside — 16.66-40.89mg/ g, quercitrin — 0.00 to 1.07 mg/ g and quercetin — 1.46-4.96 mg/g. The study indicatedthat flavonoid rutin was absent from the flavonoid pattern of H. maculatum, or present onlyin trace amounts (0.00-0.67 mg/ g), however, H. maculatum is one of the most importantsources of hyperoside. The samples of H. maculatum which accumulated high levels offlavonoids seem to be promising for further propagation.