GC-MS determination of isoflavonoids in seven red Cuban propolis samples.
In the present study, the phenolic composition analysis of seven red varieties of propolis, collected in different regions of Cuba, was evaluated by gas chromatography/mass spectrometry (GC-MS). Seventeen compounds were identified in all samples by the interpretation of their mass spectra. This appears to be the first report on the GC-MS analysis of isoflavonoids in the propolis. The results confirmed the presence of the main isoflavonoids isolated previously and suggested the general structure for the other five isoflavonoids. Vestitol, 7-O-methylvestitol, and medicarpin were present in high amounts in all propolis samples analyzed. This result indicates that propolis samples rich in isoflavonoids are not exclusively found in Pinar del Rio province and proves that GC-MS technique is a useful and alternative tool for the chemical analysis of tropical red propolis.
Instituto de Farmacia y Alimentos (IFAL), Universidad de La Habana, Avenida 23, 21425 La Lisa, CP 13600, Ciudad de La Habana, Cuba.
Mercedes
M
Campo Fernández
Osmany
O
Cuesta-Rubio
Arístides
A
Rosado Perez
Rodny
R
Montes De Oca Porto
Ingrid
I
Márquez Hernández
Anna Lisa
AL
Piccinelli
Luca
L
Rastrelli
D003462:Cuba; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D007529:Isoflavones / Q000737:chemistry*; D011429:Propolis / Q000737:chemistry*
D007529:Isoflavones; D011429:Propolis