For evaluate the minimum inhibitory concentration (MIC) value of the extracts the broth micro-well dilution method was performed as the report of Kivrak et al., (2009)14. Briefly, the highest concentration of crude methanolic extract (1000 mg/mL) was prepared two-fold serial dilutions in Mueller-Hinton Broth (MHB). 75 mL of the culture media (Mueller-Hinton Broth) was added into each hole of 96-well microplates. 100 mL of the initially concentration of crude methanolic extract at 1000 mg/mL were added into the first raw of microplate. Afterward, their serial dilutions were prepared by transferring 100 mL of solution into consecutive wells. Each microorganism was grown in nutrient broth (NB) liquid medium by incubation at 37 °C for 24 h. The inoculation of bacteria was prepared by dilution with sterile water until the bacterial cell equal to McFarland No. 0.5 (1.5 x 108 CFU/mL). And then, 25 mL of the inoculum was added into each raw of microplate. These solutions were mixed and incubated at 37 °C for 24 h. Finally, the absorbance at 655 nm was recorded by using a microplate reader. Gentamicin was also used as positive control for antimicrobial activity. The experiments were performed in triplicate.