Artículos de revistas
Does Propolis Contain Tannins?
Fecha
2014-04Registro en:
Evidence-Based Complementary and Alternative Medicine, New York, v.2014, ID 613647, p.1-3, 2014
Autor
Mayworm, Marco Aurélio Sivero
Lima, Carolina A.
Tomba, Augusto César de Barros
Silva, Caroline Cristina Fernandes da
Salatino, Maria Luiza Faria
Salatino, Antonio
Institución
Resumen
Although polyphenols have been reported as common constituents of propolis, tannins have
rarely been mentioned as its constituents. Propolis samples from seven localities in Brazil
were analyzed for detection of proanthocyanidins (condensed tannins) and determination of
the tannin content. Positive reaction for proanthocyanidins was observed for all samples
tested. The contents of tannins varied in the range 0.6% - 4.1%. A high degree of correlation
was noted between total phenols and tannin content. Red and green propolis contained high
contents of tannins, while in brown propolis the content was lower. It is suggested that the
contents of tannins should be a parameter to be considered in propolis characterization.