Chemical constituents of essential oils from three Vietnamese species of Pinus

Abstract

This paper reports the chemical composition of essential oils obtained from Pinus dalatensis Ferré, Pinus kwangtungensis Chun ex. Tsiang and Pinus armandii subsp. xuannhaensis L.K. Phan. The oils were studied by gas chromatograpgy (GC) and gas chromatography coupled to mass spectrometry (GC-MS). The main constituents of P. dalatensis were the terpene hydrocarbons namely α-pinene (38.2%), β-pinene (25.3%), β-myrcene (11.0%) and β-caryophyllene (10.5%), while α-cedrol (19.2%) was the only significant compound of P. armandi subsp. xuannhaensis. P. kwangtungensis showed β-pinene (26.3%), α-pinene (18.0%), limonene (16.1%) and β-myrcene (10.4%) as the dominant compounds. The volatile constituents of P. dalatensis and P. armandi subsp. xuannhaensis are being reported for the first time.