Valorization of the essential oils of Moroccan Juniperus thurifera and Juniperus oxycedrus

Abstract

Les huiles essentielles des rameaux de Juniperus thurifera et de Juniperus oxycedrus (Cupressaceae) collectées au Moyen Atlas oriental du Maroc ont été extraites par hydrodistillation et analysées par CG et CG/SM. Les constituants majoritaires obtenus sont des pinènes : β-pinène (36,26 %) pour les huiles essentielles de Juniperus thurifera et α-pinène (52,13 %) pour celles de Juniperus oxycedrus. L'activité antibactérienne et antifongique de ces huiles essentielles a été étudiée vis-à-vis de sept micro-organismes et comparée à celles trouvées dans la littérature. Mots clés : Juniperus thurifera -Juniperus oxycedru -Huiles essentielles -Pinènes -Activité antimicrobienne Valorization of the essential oils of Moroccan Juniperus thurifera and Juniperus oxycedrusAbstract: The volatile oils from branches of Juniperus thurifera and Juniperus oxycedrus (Cupressaceae) collected at Eastern Middle Atlas Mountains of Morocco were obtained by hydrodistillation and analysed by GC and GC/MS. The major constituents obtained were pinene: β-pinene (36.26%) for the essential oils of Juniperus thurifera and α-pinene (52.13%) to that of Juniperus oxycedrus. The antibacterial and antifungal activity of the two essential oils has been studied against seven microorganisms and compared to those found in the literature.

Chemical composition, antioxidant and antibacterial activities of the essential oils of Juniperus phoenicea, Juniperus thurifera and Juniperus oxycedrus

“…In Morocco, Achak 15 reported that the major constituents of EO of Oukaimden (Western high Atlas, Morocco) were sabinene (16.5%) and γ-terpinene (9.3%). Another study showed that the EO of J. thurifera collected in eastern middle Atlas Mountains of Morocco are rich in monoterpenes (97.09 %) and the major constituent was β-pinene (36.26%) 33 .…”

Chemical composition and larvicidal activity of Moroccan Atlas Cedar (Cedrus atlantica Manetti) against Culex pipiens (Diptera: Culicidae)

“…In our study, there was an absence of some major constituents like himachalol, α-(E)-atlantone, deodarone and β-pinene, previously reported by Zrira and Ghanmi (2016), Monica et al (2008) and Aberchane et al (2003). This observed difference qualitative and quantitative between the chemical composition of the C. atlantica essential oils, could be explained by climatic conditions, the specific geographical factors to each region (Mansouri et al, 2010), genetics (degree of hybridization), part of plant extract and harvest period (Muñoz et al, 2007;Marcum et al, 2006). …”

Allelopathic Activity of Some Medicinal Plants against Erwinia carotovora

“…In this study phytotoxicity of juniper phoenicea extract on the tested microorganism are shown, the diameters of the inhibition zone was 7, 9, 10.67 and 11.67 mm, for concentrations of 20, 40, 80, 100% respectively, Our results agrees with that obtained by [24,46] who reported that juniper phoenicea extracts have antibacterial properties. according to [47,22,20] terpenoids and flavonoids have been isolated from the genus Juniperus. There are many reasons that may lead to varying efficacy of the plant extracts and their allelopathic effect.…”

“…Cupressaceae) is a shrub or a small tree which is believed to be originated in northern lands bordering the Mediterranean Sea from Portugal to Palestine and also considered as native to North Africa and mainly found in Libya, Algeria, Morocco and Canary Islands [19]. Previously, from the genus Juniperus some terpenoids have been isolated [20], neolignans [21] and flavonoids [22]. The species of Juniperus is considered as an important medicinal plant largely used in traditional medicine.…”

“…The species of Juniperus is considered as an important medicinal plant largely used in traditional medicine. The anti-inflammatory activity of some diterpenoids of Leaves juniperus have been published [20]. Leaves juniperus have high content of α-pinene, Δ3-carene, limonene, terpinolene and the α-terpinyl acetate [23].…”