The essential oil composition of Juniperus osteosperma foliar essential oil from southern Idaho

Abstract

Article InformationJuniperus osteosperma (Utah juniper) is an abundant tree within its range in the Great Basin. It is an important source of food for birds and mule deer and has served as traditional medicine for Native Americans. The purpose of this work is to examine essential oils of J. osteosperma growing in the northern limits of its range and to evaluate the enantiomeric distribution of chiral monoterpenoids. Monoterpene hydrocarbons (23.7-31.3%) and oxygenated monoterpenoids (58.5-70.1%) made up the bulk of the essential oil compositions. The main constituents in J. osteosperma essential oils were bornyl acetate (9.3-27.0%), camphor (3.9-31.1%), terpinen-4-ol (7.9-15.3%), sabinene (4.3-12.3%), αpinene (3.9-9.6%), limonene (2.6-5.2%), borneol (1.6-4.2%), trans-verbenol (up to 10.2%), p-cymene (1.2-4.9%), α-elemol (1.2-6.3%), and γ-terpinene (1.4-2.0%). Chiral GC-MS revealed (+)-α-pinene ( 99.5%), (+)-camphene ( 93.0%), (+)-sabinene (100%), (+)-βpinene (100%), (+)-limonene ( 97.7%), (+)-cis-sabinene hydrate ( 93.7%), (+)-transsabinene hydrate ( 95.8%), (+)-camphor ( 98.3%), (+)-α-terpineol (100%), and (+)verbenol (100%) to be the predominant enantiomers. The essential oil compositions of J. osteosperma from southern Idaho are similar to those from California, Nevada, and Utah, with bornyl acetate, sabinene, terpinen-4-ol and camphor dominating the essential oils. The reported biological activities of the major components are consistent with the Native American traditional uses of the plant.

Chemical Compositions and Enantiomeric Distributions of Foliar Essential Oils of Chamaecyparis lawsoniana (A. Murray bis) Parl, Thuja plicata Donn ex D. Don, and Tsuga heterophylla Sarg.

“…The C. lawsoniana, T. plicata, and T. heterophylla foliar essential oils were analyzed via GC-MS, GC-FID, and chiral GC-MS as previously described [73]. The essential oil compositions were determined by comparing both MS fragmentation and RI values with those reported in the Adams [60], FFNSC3 [61], NIST20 [62], and Satyal [63] databases.…”