چكيده لاتين :
The in vitro antimicrobial activity of the essential oil isolated from the aerial parts of
Cymbopogon Olivieri (Boiss.) Bor, an aromatic grass of Iran was tested against three Gramnegative
and four Gram-positive bacteria and also three fungi. The results of the bioassays
showed that the oil has a remarkable antimicrobial activity. Bacillus subtilis and Candida
albicans were more sensitive to the oil than other microorganisms with inhibition zones of 20
mm and MIC values of 3.75 mg/ml and 2.5 mg/ml, respectively. The Gram-negative bacteria,
Pseudomonas aeruginosa was resistant and Klebsiella pneumoniae showed less sensitivity to
the oil with MIC value of(GREATER THAN)15 mg/ml. GC-MS analysis of the oil confirmed the determination
of 40 compounds representing 95.0% of the oil. The main identified constituent was piperitone
(48.9%).
