Composition of the essential oil of Juniperus cedrus Webb & Berth. grown on Madeira

Abstract

The essential oils isolated from twigs of Juniperus cedrus Webb & Berth. grown on Madeira were analysed by GC, GC-MS and 13 C-NMR. The oils consisted mainly of monoterpene hydrocarbons (53.1-87.8%), the main ones being˛-pinene (19.6-55.3%), limonene (17.3-32.7%) and -3-carene (5.5-15.7%). The sesquiterpenoid fraction (4.1-22.3%) was dominated by E-caryophyllene (1.6-7.4%), while sandaracopimaradiene (0.1-6.1%), isoabienol (0.5-1.3%) and trans-totarol (0.4-2.2%) were the main diterpenoids (2.2-11.9%). Oct-1-en-3-ol (1.0-2.2%) was the major constituent of the non-terpenic fraction (1.3-2.7%). The composition of our oil samples differed to some extent from that reported for J. cedrus oil grown on the Canary Islands.

Characterization of Portuguese Thymbra capitata, Thymus caespititius and Myrtus communis essential oils in topical formulations

“…All components were identified based on a lab‐made library created with reference essential oils (REO), laboratory‐synthesized components (LSC), laboratory isolated compounds (LIC) and commercial available standards (CAS). REO and REO, Reference essential oils of Thymus caespititius and Juniperus cedrus , respectively, in which components identity was confirmed by RI, GC–MS and by 13 C–NMR. CAS 1.…”

Volatile‐Oils Composition, and Bioactivity of the Essential Oils of Plectranthus barbatus, P. neochilus, and P. ornatus Grown in Portugal

“…). e ) Reference, essential oils of Juniperus cedrus[23], in which components identity was confirmed by RI, GC/MS, and by13 e ) Reference, essential oils of Juniperus cedrus[23], in which components identity was confirmed by RI, GC/MS, and by13 …”

Essential Oil Composition of Four Achillea Species from the Balkans and Its Chemotaxonomic Significance

“…The linear retention indices on both capillary columns (SPB1 and DB-5) for all of the compounds were determined by co-injection of the sample with a solution containing the homologous series of C 8 -C 25 n-alkanes. Individual identification of components was based on comparison of their mass spectra with those of the Wiley 275.1 MS library and those described by Adams [21], as well as on comparison of their retention indices according to Van Den Dool [22] with literature values [21,23] and, wherever possible, by co-injection with an authentic sample. The area percentage was obtained electronically from the GC-FID response without the use of an internal standard or correction factors.…”