yeast strains; standard bacterial strain represented by E. coli ATCC 25922 and S. typhi TY21, while the
local bacterial isolates represented by S. aureus, P. aeruginosa, S. pyogenes, L. monocytogenes, H.
pylori, E.aerugenes, S. typhi, K. pneumoniae, and C. albicans.
Antimicrobial activities of crude ethanolic extract of Al-Museiab propolis (EEMP) against bacterial and
yeast isolates evaluated. Results revealed that S. aureus was higher sensitive to 10% concentration of
EEMP than other Gram positive and Gram negative bacteria, while standard E. coli strain was highly
sensitive to EEMP than other Gram negative bacteria. EEP was not effective against C. albicans.
The results of Amoxicillin–propolis combination on the bacterial isolates were; synergistic to words P.
aeruginosa, H. pylori, E. coli and K. pneumoniae, while the results of clindamycin-propolis combination
on the bacterial isolates were; synergistic to words P. aeruginosa, H. pylori, K. pneumonia, and E.
aerugenes. The results of Rifampin-propolis combination on the bacterial isolates were; synergistic to
words on P. aeruginosa, E. coli, K. pneumoniae, S. pyogenes, and E. aerugenes. Last but not least, the
effect of Nistatin and propolis combination against C. albicans isolates indicated for additive effect.