Abstract
Conifers are well represented in Vietnam where a new pine species has been recently discovered in Son La province: Pinus cernua, synonym P. armandii ssp. xuannhaensis. The compositions of needle, cone, and branch oils have been investigated by gas chromatography (retention index), gas chromatography-mass spectrometry, and 13C nuclear magnetic resonance. Myrcene (47.0%) was the main component of needle oil, followed by β-pinene (28.4%) and α-pinene (12.5%). Branch oil also contained myrcene (32.8%), α-pinene (17.9%), β-pinene (9.8%), and a high content of limonene (20.0%). Finally, cone oil displayed α-pinene (44.1%) beside myrcene (11.5%), β-pinene (8.1%), and limonene (5.8%).
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