eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2017-06-28 14 2 621 624 10.13005/bbra/2486 24458 article Hend A. Alwathnani 1 Department of Botany and Microbiology, King Saud University, P.O. Box 22452, Riyadh-11495, Kingdom of Saudi Arabia. The present  study  was  lead  with  a view  to evaluate the antibacterial potentials of aqueous extracts  of Artemisia species against  human  pathogenic bacteria:  Escherichia coli (E.coli), Pseudomonas aeruginosa (Ps. aeruginosa) , Staphylococcus aureus (Staph. aureus) and  Enterococcus faecalis (Entero. faecalis) by two methods, first method was minimum inhibitory concentration (abbreviation: MIC) and sound method was minimum bactericidal concentration (abbreviation: MBC). Three crude plants extracts namely Artemisia monosperma, Artemisia cina and Artemisia argyi were found to show potential antibacterial properties against the isolated human pathogenic bacterial isolates. The results of MIC and MBC values of Artemisia monosperma for Enterococcus faecalis strains were at least concentration almost 2.3 and 4.1 mg/ml respectively, while MIC and MBC of Artemisia cina for Escherichia coli were highest concentration 3.9 and 4.9 mg/ml respectively. Moreover,  MIC and  MBC values  for Pseudomonas aeruginosa, Staphylococcus aureus and Enterococcus faecalis strains  was  correspondent with  MIC and MBC values  of Escherichia coli  for aqueous extracts  of Artemisia species meanwhile it is Artemisia cina  which  showed maximum activity  against  Escherichia coli.  Among the Artemisia species tested,  Artemisia cina showed the most promising result. Form these results prove the antibacterial potential of the plants  and hence  provide  support for the use of them in traditional medicine. https://www.biotech-asia.org/vol14no2/antibacterial-activity-of-aqueous-extracts-of-artemisia-species-against-some-pathogenic-bacteria/ Antibacterial activity; Human pathogens; Plants extract; MIC and  MBC methods