The Analysis of Bud Exudate of Populus Formula euramericana, and of Propolis, by Gas Chromatography--Mass Spectrometry

W. Greenaway, T. Scaysbrook, F. R. Whatley
1987 Proceedings of the Royal Society of London. Biological Sciences  
Propolis and bud exudate of Populus x euramericana have been analysed by high-resolution gas chromatography-mass spectrometry; 104 compounds have been identified, including 26 not previously identified in propolis or bud exudate. The compounds identified in propolis are derived from three sources: plant exudate collected by bees, wax secreted by bees, and materials such as sugars, which are probably introduced accidentally either during propolis manufacture or during subsequent passage of bees
more » ... nt passage of bees over the propolis. Previous observations that bees use bud exudate from Populus as a primary source for propolis manufacture are confirmed.
doi:10.1098/rspb.1987.0073 fatcat:amitvj7ozje7ninqypvx4varpi