Chemical composition of essential oils isolated from leaves, twigs, and wood of Vietnamese Keteleeria davidiana (C.E.bertrand) Beissn

ABSTRACT

Keteleeria davidiana (C.E.Bertrand) Beissn. is a species of conifer native to southern China, Laos and Vietnam. The species has been listed as vulnerable in Vietnam. Essential oil samples have been isolated from leaves, twigs and wood, and their compositions investigated for the first time by combination of chromatographic and spectroscopic techniques [GC-FID, GC-MS and¹³C NMR]. The composition of leaf essential oil was dominated by α-pinene (28.1%), β-pinene (15.8%) and (E)-β-caryophyllene (13.8%). Twig essential oil contained mainly α-pinene (37.9%) and β-pinene (24.7%) accompanied by (E)-β-caryophyllene (8.3%) and β-phellandrene (7.5%). Lastly, α-pinene (27.9%), α-terpineol (20.3%) and (E)-β-caryophyllene (20.8%) were predominant in wood essential oil.

KEYWORDS:

• Keteleeria davidiana (C. E. Bertrand) Beissn
• essential oil composition
• α-pinene
• β-pinene
• (e)-β-caryophyllene
• vietnam

Acknowledgments

The authors gratefully acknowledge VAST basis investigation project which financially supported this study under the Project Code: UQĐTCB.05/22-24.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work was supported by the VAST basis investigation project [UQĐTCB.05/22-24].