Analysis of essential oil constituents of three Dasymaschalon species (Annonaceae) from Vietnam

Abstract

The compositions of essential oils of the leaves and stem barks of three Vietnamese species of Dasymaschalon J. D. Hooker & Thomson. (Annonaceae) were determined by means of gas chromatography and gas chromatography-mass spectrometry. Dasymaschalon longiusculum (Bân) yielded oils in which the major components were α-pinene (28.9% and 12.5%, respectively), β-pinene (26.5% and 13.3%, respectively), β-myrcene (12.0% and 6.0%, respectively) for the leaf and stem. The main compounds of the leaf and stem oils of Dasymaschalon glaucum Merr. & Chun. were α-pinene (14.4% and 10.5%, respectively), β-pinene (14.4% and 10.3%, respectively) and bicycloelemene (5.2% and 30.0%, respectively). The essential oil of Dasymaschalon robinsonii Jovet-Ast was different, mainly comprising α-copaene (12.7% and 16.6%, respectively), germacrene B (11.3% and 7.5%, respectively), δ-cadinene (5.6% and 5.3%, respectively) for the leaf and stem.

Constituents of Essential Oils from Dasymaschalon bachmaensis and Phaeanthus vietnamensis

“…The essential oil of D. rostratum was previously shown to consist mainly of olefins and exhibited strong antimicrobial effects [11]. It could be seen that the main compounds in the present oil samples namely limonene, -phellandrene, eugenol, benzyl benzoate, benzyl cinnamate and (Z)-13-docosenamide were not reported to be of dominant status in the previous data on other Dasymaschalon oils [7,8,10,11].…”

“…The experimental conditions and instruments used for GC and GC-MS analysis and compound identifications were reported in our earlier publications [7][8][9].…”

“…The essential oil from the fruits of D. trichophorum [10] from China contained nerolidol (19.9%), caryophyllene (16.7%) and β-myrcene (9.3%) and exhibited strong antitumor activity against SPCA-1 human tumor cell line [10]. However, β-pinene (33.4%), α-pinene (32.3%) and β-caryophyllene (10.5%) were the significant constituents of D. rostratum from Vietnam [7] while D. longiusculum contained were α-pinene (28.9% and 12.5%, respectively), β-pinene (26.5% and 13.3%, respectively), β-myrcene (12.0% and 6.0%, respectively) for the leaf and stem [8] and stem oils of D. glaucum [8] were rich in α-pinene (14.4% and 10.5%, respectively), β-pinene (14.4% and 10.3%, respectively) and bicycloelemene (5.2% and 30.0%, respectively). The essential oil of D. robinsonii was composed of α-copaene (12.7% and 16.6%, respectively), germacrene B (11.3% and 7.5%, respectively), δcadinene (5.6% and 5.3%, respectively) for the leaf and stem [8].…”

“…The aim of the present study was to report the compounds identified in the essential oils of D. bachmaensis and Phaeanthus vietnamensis grown in Vietnam. In our previous communications, the chemical compounds identified in the essential oils of some flora of Vietnam were reported [7][8][9].…”

“…and stem oils of D. glaucum [8] were rich in α-pinene (14.4% and 10.5%, respectively), β-pinene (14.4% and 10.3%, respectively) and bicycloelemene (5.2% and 30.0%, respectively). The essential oil of D. robinsonii was composed of α-copaene (12.7% and 16.6%, respectively), germacrene B (11.3% and 7.5%, respectively), δcadinene (5.6% and 5.3%, respectively) for the leaf and stem [8].…”