Bishta, GangaDevendra, MishraJoshi, ShivaniKhetwala, Khadak Singh2012-09-202012-09-202012-09-20http://hdl.handle.net/2003/2962910.17877/DE290R-5129The essential oil of Lobelia pyramidalis was analyzed by GC and GC-MS. A total of 21 con-stituents comprising 77.88 % of the total oil were identified. Perilla ketone constituted 25.61 % of the oil followed by camphorquinone (12.16 %), dibutyl phthalate (10.66 %) and allyl nonanoate (8.47 %). The antimicrobial activity of the oil was evaluated using the disc diffusion method and the microdilution technique. The results showed that the oil exhibited moderate antimicrobial activity.enEXCLI Journal ; Vol. 10, 2011antimicrobial activityessential oilLobelia pyramidalisminimal inhibitory concentrationperilla ketone610article (journal)