| a sedge plant as the source of kangaroo island propolis rich in prenylated p-coumarate ester and stilbenes. | propolis samples from kangaroo island, south australia, were investigated for chemical constituents using high-field nuclear magnetic resonance spectral profiling. a type of propolis was found containing a high proportion of prenylated hydroxystilbenes. subsequently, the botanical origin of this type of propolis was identified using a beehive propolis depletion method and analysis of flora. ligurian honey bees, apis mellifera ligustica spinola, were found to produce propolis from resin exuded by ... | 2017 | 27890584 |