Open AccessEnantiomeric Distribution of Terpenoids inJuniperusEssential Oils: Composition ofJuniperus horizontalisandJuniperus scopulorumLeaf Essential Oils From Southwestern Idaho
Author(s) -
Kathy Swor,
Ambika Poudel,
Prabodh Satyal,
William N. Setzer
Publication year - 2022
Publication title -
natural product communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.221
H-Index - 44
eISSN - 1934-578X
pISSN - 1555-9475
DOI - 10.1177/1934578x221091006
Subject(s) - sabinene , chemistry , juniperus communis , terpenoid , botany , essential oil , terpene , chromatography , biology , limonene , juniper , organic chemistry
The essential oils from the leaves and twigs of Juniperus horizontalis and Juniperus scopulorum, growing in southwestern Idaho, were obtained by hydrodistillation and analyzed by gas chromatography–mass spectrometry (GC-MS) and gas chromatography–flame ionization detection (GC(FID)). The major components in the essential oil of J horizontalis were α-pinene, 16.9%, predominantly ( + )-α-pinene; sabinene, 37.1%, exclusively ( + )-sabinene; myrcene, 5.0%; and terpinene-4-ol, predominantly ( + )-terpinen-4-ol. The essential oil of J scopulorum was rich in sabinene, 29.8%, exclusively ( + )-sabinene; terpinene-4-ol, 13.2%, nearly racemic; α-elemol, 9.7%; and 8α-acetoxyelemol, 6.4%. In addition, 12 commercial Juniperus communis fruit essential oils were analyzed by chiral GC-MS. α-Pinene showed considerable variation in enantiomeric distribution, depending on geographical location. The dominant enantiomer of sabinene in J communis essential oils was ( + )-sabinene.