Does Propolis Contain Tannins?

作者：Mayworm Marco A S^*; Lima Carolina A; Tomba Augusto C B; Fernandes Silva Caroline C; Salatino Maria L F; Salatino Antonio

来源：Evidence-Based Complementary and Alternative Medicine, 2014, 2014: 613647.

DOI：10.1155/2014/613647

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.

• 出版日期2014