Answers are grounded in this paper and cite their sources.
The main phenolic constituents from Brazilian propolis, originating from Sao Paulo State, were isolated and identified: three flavonoids, a prenylated coumaric acid and two new benzopyranes, E and Z 2,2-dimethyl-6-carboxyethenyl-8-prenyl-2H-benzopyranes
No takes yet. Share an insight, caveat, or question.
Boudourova-Krasteva et al. (1997) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: