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Abstract
Chemical profile of the hydrodistilled volatile oil from the aerial parts of lemon verbena, Aloysia citriodora Paláu, grown in Jordan was analyzed by means of GC and GC-MS. The melissa-odored plant was found rich in the oil with an average yield of 0.5 % (v/w) of dried material. The oil was characterized by a high content of monoterpenes (69.2 %) and moderate levels of sesquiterpenes (29.1 %). Although the oxygenated fraction was dominant (total=55.5 %: 43.6 % as monoterpenes and 11.9 % as sesquiterpenes), the levels of hydrocarbon terpenoids were also notable (total=42.8 %: 25.6 % as monoterpenes and 17.2 % as sesquiterpenes). Limonene (17.7 %) was the principal component, which, together with the citral isomers, geranial (10.1 %) and neral (9.8 %), make the oil obtained from this Jordanian species with characteristic flavor and fragrance. 1,8-Cineole (11.7 %), γ-terpineol (3.4 %), β-caryophyllene (2.6 %), α-curcumene (6.3 %), spathulenol (4.6 %), and caryophyllene oxide (3.1 %) were also identified as major compounds.