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AbstractThe fresh rhizomes and roots of Asarum canadensewere steam-distilled to yield oils in 1.30% to 1.96%, respectively. The oils were analyzed by a combination of GC-FID and GC/MS techniques. In the case of the rhizome oil, the total amount of phenyl ethers including methyl eugenol, elemicins, and asaricin was about 58%. In the root oil, (E)-isoelemicin was the major product (20%) accompanied by elemicin (4.9%). From retention indices on both non-polar and polar columns and MS considerations, it may be inferred that methoxy-elemicin and both (E)- and (Z)-methoxy-isoelemicin as well as the new hydroxyl derivatives: hydroxyl-elemicin and (E)- and (Z)-hydroxy-isoelemicins were characterized in the oils.

ABSTRACTThe essential oil of Ligusticum scoticumL. obtained after hydrodistillation, hydrodiffusion, or headspace techniques was analyzed by a combination of Kovats' indices, GC/MS, and 13C-NMR. The major components identified were dill apiole (53–67%), myristicin (12–30%), and α-pinene (5–9%), except in headspace analysis where 75% of the mixture was α-pinene. Important factors influence the composition of this oil throughout the process of extraction(hydrodistillation or hydrodiffusion); the terpenic profile is also dependent upon flowering.

AbstractThe essential oil, obtained by steam distillation of air-dried leaves of Annona senegalensisPers. growing in Burkina Faso was analyzed by GC and GC/MS. The oil was found to contain germacrene D (19.2%), β-caryophyllene (19.1%), γ-cadinene (11.1%) and α-humulene (9.7%) as major components.

AbstractThe essential oils, obtained by steam distillation of air-dried leaves of Vitex diversifoliaBak. (Verbenaceae) growing in Burkina Faso was analyzed by GC and GC/MS. Forty-three components making up 97% of the oils were identified. The oils were found to contain limonene (74.2%) as major component.