en Chemical Composition and Antimicrobial Activity of <i>Artemisia annua</i> L. Essential Oil from Iran فارماكوگنوزی و فارماسيوتيكس Pharmacognosy & Pharmaceutics پژوهشی Research <div dir="ltr" style="text-align: justify;"><span new="" roman="" times="">The composition of the essential oil obtained from the dried flowering aerial parts of <i>Artemisia annua </i>L<i>.</i> (Compositae) was analysed by GC and GC/MS. Thirty-two components were identified in the essential oil of <i>A. annua </i>L<i>.</i> with campher (48.00%), 1,8-cineole (9.39%), camphene (6.98%) and spathulenol (4.89%) as major components. The essential oil was evaluated for antibacterial and antifungal activities. The activity was more pronounced against fungal organisms than against Gram-positive and Gram-negative bacteria.</span></div> <div style="text-align: justify;"><span new="" roman="" style="FONT-FAMILY: " times="">The composition of the essential oil obtained from the dried flowering aerial parts of <i>Artemisia annua </i>L<i>.</i> (Compositae) was analysed by GC and GC/MS. Thirty-two components were identified in the essential oil of <i>A. annua </i>L<i>.</i> with campher (48.00%), 1,8-cineole (9.39%), camphene (6.98%) and spathulenol (4.89%) as major components. The essential oil was evaluated for antibacterial and antifungal activities. The activity was more pronounced against fungal organisms than against Gram-positive and Gram-negative bacteria.</span></div> Artemisia annua L., Essential oil, GC/MS, Antimicrobial activity Artemisia annua L., Essential oil, GC/MS, Antimicrobial activity 58 62 http://jmp.ir/browse.php?a_code=A-10-421-1&slc_lang=en&sid=1 MR Verdian-rizi MR Verdian-rizi mverdian@razi.tums.ac.ir 100319475328460041077 100319475328460041077 Yes Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran E Sadat-Ebrahimi Sadat-Ebrahimi 100319475328460041078 100319475328460041078 No Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran A Hadjiakhoondi Hadjiakhoondi 100319475328460041079 100319475328460041079 No Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran MR Fazeli Fazeli 100319475328460041080 100319475328460041080 No Department of Biotechnology, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran Department of Biotechnology, Faculty of Pharmacy, Tehran University of medical Sciences, Tehran M Pirali Hamedani M Pirali Hamedani 100319475328460041081 100319475328460041081 No Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences and Food and Drug Laboratory Research Center, Tehran, Iran Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences and Food and Drug Laboratory Research Center, Tehran, Iran