biostudies-literatureUnknown27(17)Ankney E<i>Pinus</i> species are important in traditional medicine throughout their ranges, and pine essential oils are of interest in aromatherapy and as topical treatments. In this work, the leaf (needle) essential oils of <i>Pinus ponderosa</i> var. <i>ponderosa</i> and <i>Pinus contorta</i> subsp. <i>contorta</i> from Oregon and <i>Pinus flexilis</i> growing in Idaho, have been obtained by hydrodistillation and analyzed by gas chromatographic techniques. The leaf essential oil of <i>P. ponderosa</i> was dominated by β-pinene (21.5-55.3%), methyl chavicol (8.5-41.5%), α-pinene (3.6-9.6%), δ-3-carene (3.6-6.2%), and α-terpineol (1.4-5.3%). The major components of <i>P. contorta</i> essential oil were β-phellandrene (23.8%), terpinen-4-ol (11.0%). The essential oil of <i>P. flexilis</i> was dominMolecules (Basel, Switzerland)5658https://www.ebi.ac.uk/biostudies/studies/S-EPMC9457545biostudies-literatureEssential Oil Compositions of <i>Pinus</i> Species (<i>P. contorta</i> Subsp. <i>contorta</i>, <i>P. ponderosa</i> var. <i>ponderosa</i>, and <i>P. flexilis</i>); Enantiomeric Distribution of Terpenoids in <i>Pinus</i> Species.PMC9457545Swor KAnkney ESatyal PSetzer WNfalseEssential Oil Compositions of <i>Pinus</i> Species (<i>P. contorta</i> Subsp. <i>contorta</i>, <i>P. ponderosa</i> var. <i>ponderosa</i>, and <i>P. flexilis</i>); Enantiomeric Distribution of Terpenoids in <i>Pinus</i> Species.<i>Pinus</i> species are important in traditional medicine throughout their ranges, and pine essential oils are of interest in aromatherapy and as topical treatments. In this work, the leaf (needle) essential oils of <i>Pinus ponderosa</i> var. <i>ponderosa</i> and <i>Pinus contorta</i> subsp. <i>contorta</i> from Oregon and <i>Pinus flexilis</i> growing in Idaho, have been obtained by hydrodistillation and analyzed by gas chromatographic techniques. The leaf essential oil of <i>P. ponderosa</i> was dominated by β-pinene (21.5-55.3%), methyl chavicol (8.5-41.5%), α-pinene (3.6-9.6%), δ-3-carene (3.6-6.2%), and α-terpineol (1.4-5.3%). The major components of <i>P. contorta</i> essential oil were β-phellandrene (23.8%), terpinen-4-ol (11.0%). The essential oil of <i>P. flexilis</i> was domin2022-01-01T00:00:00Z2022 Sep2025-04-18T22:42:08.054Z2025-04-07T10:25:43.911ZS-EPMC94575453608042610.3390/molecules27175658