Falcão, SoraiaCardoso, Susana M.Domingues, Maria R.M.Vilas-Boas, Miguel2011-06-072011-06-072009Falcão, S.; Cardoso, S.M.; Domingues, M.R.M.; Vilas-Boas, Miguel (2009). Insigths in the phenolic composition of portuguese própolis. In 41th APIMONDIA. Montpellierhttp://hdl.handle.net/10198/5026The chemical composition of propolis is highly variable, depending strongly on thc plant sources available to the bees at different locations, the geographic and climatic characteristics of these locations, I n the temperate zone, propol is originates mostly Ii'om bud exudates of poplar trees (Populus spp .. section Aigciros), For this reason, European propolis contains the typical 'poplar bud' phenolics: flavonoid aglicones (flavones and flavanones), phenolic acids and their esters.engconference object