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AbstractVolatile components from fresh and air-dried leaves of Juniperus thuriferavar. africana, J. phoeniceaand J. oxycedrus(Cupressaceae) were isolated by direct water distillation (Clevenger-type apparatus) and analyzed using GC (FID) and GC/MS. The essential oils from leaves of J. thuriferavar. africanawere characterized by a high sabinene content (16.5–21.8%), γ-terpinene (9.3–11.5%), and α-pinene (7.6–9.1%). The major components for J. phoeniceawere α-pinene (38.2–58%) and δ-3-carene (7.6%), while 13-epi-manoyl oxide (12.5–13.2%), (Z)-6-pentadecen-2-one (11.5–12.2%), and α-pinene (8.5–17.1%) were the major components found in the leaf oils of J. oxycedrus.The fresh leaves of J. thuriferavar. africanacontained 1.46% oil, while the yield was 1.14% from the dried leaves. The oil yields from the dried leaves of J. phoeniceaand J. oxycedruswere 0.94% and 0.01%, respectively. Air-drying moderately effected the qualitative and quantitative composition of the oils.

AbstractThe chemical composition of essential oils obtained by steam- distillation of the leaves of Tetraclinis articulatawere studied by GC-FID and GC-MS. The samples were collected from Tensift Al Houz region from Marrakech (Morocco). Monoterpenes hydrocarbons constituted the main chemical groups in the oil from leaves of T. articulatacontained higher amounts of α-pinene (41.2 %) and bornyl acetate (20.6 - 36.4 %). Heavy metal contents in the collected samples, i.e. Ca, K, Mg, Mn, Cu, S, Si, Al and Zn, were found at different levels. The highest mean levels of Ca, K, Mg and Si were found in this specie. The composition of organics (lipids, total nitrogen, protein and fats) of this specie is also reported.

AbstractEssential oils of Moroccan Juniperus thuriferavar. africanafrom three provenances (Forêt Islane, Ait Lkak and Plateau of Matat) in the Tensift-Al Haouz, Marrakech region, were analyzed by combined capillary gas chromatography/mass spectrometry. The oil yields from fresh leaves showed on differences among geographical sources. Air dried leaves appeared to yield more oil at the highest elevation (1.03%, Ait Lkak, 2900 m) than lower sites (0.67%, Plateau of Matat, 2200 m; 0.57%, Forêt Islane, 2000 m). The essential oils from each geographic site had very similar composition in fresh versus air dried leaves.The essential oils from provenance Ait Lkak and Plateau of Matat were very similar and characterized by a high sabinene content (21.2, 35.9%), in contrast to 10.% sabinene from the provenance Forêt Islane. The oil from Foret Islane had a high δ-cadinene content with 12.7%, whereas Aik Akak and Plateau of Matat contained only 0.6 and 0.8%. The Moroccan oils (J. thuriferavar. africana) were compared to European J. thuriferavar. thurifera(Spain) oil. Moroccan oils were found to be higher sabinene and limonene than the European oil

AbstractThe essential oil of dried leaves of Moroccan and Tunisian Juniperus phoenicea(Cupressaceae) was isolated by direct hydrodistillation (Clevenger-type apparatus) and analyzed using GC (FID) and GC-MS. Forty five compounds in Moroccan oil (72 % of the oil) and thirty one compounds in Tunisian oil (99 % of the oil) were identified. The most abundant compounds in J. phoeniceaoils were Opinene (35.46, 38.20 %) and ð-3-carene (7.6, 11.69 %) respectively. Essential oil of Tunisian juniper is characterized by a high percentage of ô-3-carene and limonene with respectively 11.69 %, 10.29 % in comparison to 7.6 % and 1.1 % for the Moroccan juniper. The sesquiterpenes fraction is more abundant in Tunisian juniper with a significant percent of ß-selinene (7.32 %), followed by ß-caryophyllene (4.76 %) and Ot-cubebene (4.15 %).