Different solutions of royal jelly, royal jelly and rape honey mix, and rape honey (2, 5, 10, 20, and 30%) were contaminated with bacterial suspension of Aeromonas hydrophila (ATCC 7965). Colony counts for each test substances were determined after incubation for 24 h and 48 h and those concentrations which completely inhibited the growth of the test strain were assigned as Real Bactericidal Concentration (RBC) or 100% inhibition. Royal jelly and rape honey mixes possessed a lower antibacterial

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... activity than rape honey. The concentrations of royal jelly (10, 20, and 30%) had a total inhibitory effect against A. hydrophila (ATCC 7965). Royal jelly, royal jelly and rape honey mix, and rape honey have a potential as alternative therapeutic agents against A. hydrophila.