Ethyl acetate was prepared for MIC as mentioned above. Brothmicro-dilution method was used to determine MIC. MHB mediumwas added into sterile 96 well plates (185 l for each well). The fol-lowing concentrations of the test extract, 2000, 1000, 500, 250, 125,62.5 and 31.25 g/ml, were added into 96 well plates. From eachinoculum culture suspension, 5 l was added into the wells. Strep-tomycin and DMSO were added as positive and negative controlsrespectively. Plates of 96 wells was incubated at 37◦C for 17 h.