Chemical composition of European propolis: expected and unexpected results.
Ten propolis samples from Bulgaria, Italy and Switzerland were analyzed by GC-MS. As expected, most samples displayed the typical chemical pattern of "poplar" propolis: they contained pinocembrin, pinobanksin and its 3-O-acetate, chrysin, galangin, prenyl esters of caffeic and ferulic acids. Two samples differed significantly: one from the Graubünden Alpine region, Switzerland, rich in phenolic glycerides, and one from Sicily which contained only a limited number of phenolics and was rich in diterpenic acids.
Bankova
Vassya
V
Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia. bankova@orgchm.bas.gh
Popova
Milena
M
Bogdanov
Stefan
S
Sabatini
Anna-Gloria
AG
D000818:Animals; D001516:Bees; D002599:Chalcone / Q000031:analogs & derivatives* / Q000032:analysis; D004952:Esters / Q000032:analysis; D005060:Europe; D005419:Flavonoids / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D010636:Phenols / Q000032:analysis*; D011429:Propolis / Q000737:chemistry*
D004952:Esters; D005419:Flavonoids; D010636:Phenols; D002599:Chalcone; D011429:Propolis