Ethanolic extracts of samples temperate zone propolis, four from the UK and one Poland, were tested against three Trypanosoma brucei strains displayed EC50 values < 20 µg/mL. The fractionated, which 12 compounds two-component mixture isolated, characterized by NMR high-resolution mass spectrometry, as 3-acetoxypinobanksin, tectochrysin, kaempferol, pinocembrin, 4?-methoxykaempferol, galangin...
