Analysis of Eight Bioactive Compounds in Alpinia Species by HPLC-DAD

Eight antiplatelet compounds, alpinetin, cardamonin, 4', 7-dihydroxy-5-methoxyflavanone, helichrysetin, 5,6-dehydrokawain, 4'-hydroxydehydrokawain, 1,7-bis (4-hydroxyphenyl)-3-hydroxy-1,3,6-heptatrien-5-one and 1,7-bis (4-hydroxyphenyl)-3-hydroxy-1,3-heptadien-5-one, in eighteen samples of sixteen Alpinia species were analyzed by HPLC. Among them, alpinetin and cardamonin were quantitatively determined and the method was validated. The results indicated that these Alpinia species display different chemical profiles. Alpinetin and cardamonin were the two dominant compounds in the seeds of A. katsumadai. 5,6-Dehydrokawain was also detected in the seeds of A. zerumbet with relative higher content.