Fresh leaves of Litsea glutinosa (Lour.) C. B. Rob. from Ha Tinh were steam distilled to produce an oil in 0.15% yield. The essential oil was analysis by a combination of capillary GC and GC/MS. Seventy eight compounds were detected in the oil, of which more than 95.18% were terpenoids. The major components were (E)-β-ocimene (13.35%), β-caryophyllene (27.20%) and bicyclogermacrene (18.16%). Ke...

The essential oils obtained by hydrodistillation from the fresh leaf and stem of Piper porphyrophyllum N.E. Br. were analyzed by GC and GC/MS. Thirty four constituents were identified in the leaf oil, while thirty eight constituents were identified in the stems oil. The most abundant components in the leaf oil included bicyclogermacrene (14.7 %), α-copaene (13.2 %) and β-phellandrene (9.5 %) wh...

The objectives of this study were to chemically characterize and evaluate the antioxidant activity of essential oils Cinnamodendron dinisii Schwacke (pepper) and Siparuna guianensis Aublet (negramina). The essential oil was isolated by hydrodistillation using a Clevenger modified apparatus, and the identification and quantification of constituents, through GC/MS and GC-FID analysis. The antioxi...

The essential oil obtained from the aerial parts of the Turkish endemism Stachys aleurites (Lamiaceae) has been studied. The main constituents were sesquiterpene hydrocarbons: bcaryophyllene (33.7%), bicyclogermacrene (14.5%) and germacrene D (9.6%). The main monoterpene was a-pinene (8.4%). Some chemotaxonomical considerations have been provided. 2004 Elsevier Ltd. All rights reserved.

ABSTRACT. This work aimed to investigate, for the first time, chemical composition and cytotoxicity of Dillenia reticulata King’s essential oil. The oil was obtained through hydrodistillation, its volatile components were analyzed gas chromatography (GC-FID) chromatography-mass spectrometry (GC-MS) techniques. Twelve components, which constitutes more than 99.49% content, successfully identifie...

The essential oils of Piper cernuum and Piper regnellii leaves were analyzed by gas chromatography-mass spectrometry (GC-MS) and the results were compared to that obtained by means of a program designed to analyse (13)C-NMR data of complex mixtures. Bicyclogermacrene (21.88 %)/beta-caryophyllene (20.69 %) and myrcene (52.60 %)/linalool (15.89 %) were the major constituents in essential oil from...

The essential oil composition from the leaves of Strychnos axillaris Colebr. (Loganiaceae) growing in Malaysia was examined for first time. obtained by hydrodistillation and fully characterized gas chromatography (GC-FID) chromatography-mass spectrometry (GC-MS). In total, 15 components were identified oil, which made up 87.2% total oil. is composed mainly ?-ionone (20.2%), ?-ionone (19.5%), bi...

The biological activities of aristolane, aromadendrane, ent-1,10-secoaromadendrane, 2,3-secoaromadendrane, ent-5,10-cycloaromadendrane, bicyclogermacrene, lepidozane, and maaliane terpenoids which contain the gem-dimethylcyclopropyl unit are described. Particular attention is given to their anti-viral, anti-microbial and cytotoxic activities. In the main text there are 119 references covering t...

The essential oil isolated from fresh aerial parts of Hypericum perforatum L. was analyzed by GC and GC/MS. One hundred and thirty four identified compounds accounted for 98.7% of the total oil. The main components of the oil were: germacrene D (18.6%), (E)-caryophyllene (11.2%), 2-methyloctane (9.5%), α-pinene (6.5%), bicyclogermacrene (5.0%) and (E)-β-ocimene (4.6%). The volatile profile of H...

The volatile constituents of the aerial parts of Varthemia. persica DC. var. persica, growing wild in Iran, were investigated by GC-MS. Sixty seven constituents were identified. ?-Cadinene (9.7%), Selin-11-en-4-?-ol (5.30%), Germacrene D (4.9%), Bicyclogermacrene (4.7%), ??Muurolene (4.7%), ?-Eudesmol (4.52%), ?-Himachalen oxide (3.6%), ?-Eudesmol (3.54%), ?-Bourbonene (3.21%) were found to be...