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Terpenoid composition and antibacterial activity of the essential oil from Inula cappa (Buch-Ham. ex. D. Don) DC
- Priydarshi, Reema, Melkani, Anand B., Mohan, Lalit, Pant, Charu C.
- The Journal of essential oil research 2016 v.28 no.2 pp. 172-176
- Bacillus subtilis, Enterococcus faecalis, Inula, Klebsiella pneumoniae, Xanthomonas campestris pv. phaseoli, antibacterial properties, essential oils, gas chromatography-mass spectrometry, hydrocarbons, oils, sesquiterpenoids, Himalayan region, India
- The essential oil from Inula cappa (Buch-Ham. ex. D. Don) DC (Asteraceae), growing wild in the central Himalayan region (India), was analyzed by capillary GC and GC-MS. The sesquiterpene hydrocarbons constituted almost 50% of the oil. Total fifty-four constituents were identified which represented 90.2% of the oil. β -Caryophyllene (27.5%), cis -dihydro-mayurone (6.7%), β -bisabolene (6.5%) and (E) - β -farnesene (5.6%) were found to be the principal constituents. The oil was tested against ten bacterial strains and showed significant activity against Enterococcus faecalis , Klebsiella pneumoniae, Xanthomonas phaseoli, and Bacillus subtilis. This is the first report of bioactivity and essential oil composition from I. cappa.