Determination of antimicrobial and anti-quorum sensing activities of water and ethanol extracts of propolis

Quorum Sensing is a special system between bacteria to communicate with the signal molecules. Propolis resin collected from plants by honey bees. The present study examined anti-quorum sensing and antimicrobial activities of water ethanol extracts propolis. propolis were studied against Escherichia coli ATCC 25922 Gram (-), Listeria monocytogenes 7644, Streptococcus mutans CNCTC 8/77, Staphylococcus aureus 25923 (+), Candida albicans 10239 (yeast) well diffusion method. Anti-quorum activity, violacein inhibition anti-swarming activity using Chromobacterium violaceum CV026 C. 112472, Pseudomonas aeruginosa (PA01) respectively. Both detected antibacterial (+) albicans. However, (-) not observed. While extract was determined more effectively than extract, less effective. It also that both display inhibition. revealed antimicrobial, sensing, depended on dose extracts. Thirty-six phenolic compounds analysed HPLC-DAD. amount presence in apart benzoic acid, cinnamic syringic (±) epigallocatechin, vitexin, rutin, trans-chalcone. Consequently, put forward have antibacterial, anti- quorum inhibition, changing depend directly extraction solvent compounds.