Galangin

Galangin is a flavonol, a type of flavonoid.
Occurrence.
Galangin is found in high concentrations in "Alpinia officinarum" (lesser galangal) and "Helichrysum aureonitens". It is also found in the rhizome of "Alpinia galanga" and in propolis.
Biological activities.
Galangin has been shown to have "in vitro" antibacterial and antiviral activity. It also inhibits the growth of breast tumor cells "in vitro".