Author(s): Sarath Chandra Bose N*, Ammani K and S Ratakumari
The present study was elucidating the chemical composition of essential oil from Cymbopogon jwarancusa and its antibacterial activity. Chemcial composition of the essential oils was determined by capillary gas chromatography (GC) and mass spectrometry. Major constituents of the oil were Piperitone (33.05%), Geraniol (20.30%),? 4–Caren.e (16.9%),γ–terpinen (6.5%),β–Piniene (3.5%). and in C. jwarancusa 95.8% was identified. The antimicrobial assay using the agar well diffusion method showed that the essential oil markedly suppressed the growth of several species of Citrobacter, Klebsiella pneumonia, Proteus mirabilis, Salmonella entericaser.typhi and Shigella flexneri at the dose of 105 CFU/ml. The most active compounds among the 19 examined 6 constituen ts shows antibacterial activity. Among the 6 constituents, geraniol completely inhibited the growth of the bacteria than fungi. The β– Pinene, Linalool,and α – terpeniol showed an inhibitory activity against
some bacteria and fungi, whereas the other compounds lacked this property.