Author(s): Ogunbinu AO, Flamini G, Cioni PL, Adebayo MA, Ogunwande IA
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Abstract The essential oils of four plant species from Nigeria have been extracted by hydrodistillation and analyzed by GC and GC-MS. The oils of Cajanus cajan were comprised of sesquiterpenes (92.5\%, 81.2\% and 94.3\% respectively in the leaves, stem and seeds). The major compounds identified were alpha-himachalene (9.0-11.5\%), beta-himachalene (8.0-11.0\%), gamma-himachalene (6.9-8.1\%), alpha-humulene (7.1-8.7\%) and alpha-copaene (4.5-5.6\%). However, monoterpenoid compounds (81.8\%) dominated the oil of Moringa oleifera with an abundance of alpha-phellandrene (25.2\%) and p-cymene (24.9\%). On the other hand, aldehydes (52.8\%) occurred in the highest amount in Heliotropium indicum, represented by phenylacetaldehyde (22.2\%), (E)-2-nonenal (8.3\%) and (E, Z)-2-nonadienal (6.1\%), with a significant quantity of hexahydrofarnesylacetone (8.4\%). The leaf and stem oils of Bidens pilosa were dominated by sesquiterpenes (82.3\% and 59.3\%, respectively). The main compounds in the leaf oil were caryophyllene oxide (37.0\%), beta-caryophyllene (10.5\%) and humulene oxide (6.0\%), while the stem oils had an abundance of hexahydrofarnesyl acetone (13.4\%), delta-cadinene (12.0\%) and caryophyllene oxide (11.0\%). The observed chemical patterns differ considerably from previous investigations.
This article was published in Nat Prod Commun
and referenced in Medicinal & Aromatic Plants