Chemical composition of needle and twig essential oils from Pinus krempfii Lecomte, an endemic species to Vietnam

ABSTRACT

Pinus krempfii

Lecomte is endemic to the central highlands of Vietnam. It is also known as Krempf’s pine or flat-needled pine. Two essential oil samples have been isolated from leaves and branches, respectively, and analyzed by a combination of chromatographic and spectroscopic techniques [GC(FID), GC-MS and ¹³C NMR]. The compositions of both oil samples were dominated by monoterpene hydrocarbons, α-pinene, limonene and myrcene. Sesquiterpene hydrocarbons were represented by (E)-β-caryophyllene and germacrene D. Camphorene (meta isomer) was identified at low content. The compositions of essential oil samples from P. krempfii have been compared with those of other essential oils from various species of Vietnamese pines.

KEYWORDS:

• Pinus krempfii Lecomte
• essential oil composition
• monoterpene hydrocarbons
• ¹³C NMR
• Vietnam

Acknowledgments

The authors gratefully acknowledge Nafosted which financially supported this study under the Project Code: 106.06- 2018.13.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Natosfed Code: 106.06- 2018.13 [106.06- 2018.13].