Abstract
ABSTRACT The volatile oils from four species of genus Lippia of the Verbenaceae family, Lippia turbinata, L. polystachya, L. junelliana and L. integrifolia have been examined by means of GC/MS and IR in combination with retention indices. The main constituents of the essential oil of L. turbinata were found to be α-thujone (28.29%), carvone (7.40%), β-caryophyllene (5.39%), germacrene-D (5.16%), bicyclogermacrene (4.53%), spathulenol (6.06%) and caryophyllene oxide (7.03%). The volatile oil of L. polystachya was found to contain α-thujone (68.94%) and carvone (10.34%) as major components. The oil from L. junelliana was characterized by the presence of large amounts of myrcenone (15.48%), myrcene (7.92%), limonene (9%), camphor (10.55%), (E)-tagetenone (6.30%), trans-dihydrocarvone (5.85%) and cis-dihydrocarvone (16.65%). The main components of the volatile oil of L. integrifolia were shown to be camphor (16.20%), africanene isomers (5.04%), lippifoli-l(6)-en-5-one (16.70%) and an unidentified component (1...
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