Korean Journal of Apiculture, vol. 10, no. 1, pp. 53-56
Antimicriobial activity of honeybee propolis extract in Korea was tested against 31 microbial strains of type cultures. The propolis extract has wide range of antimicrobial activity, especially against gram positive bacteria and fungi. The extraction efficiency of antimocrobial substance from the propolis was slightly higher in 35% than 100% ethanol.