11 résultats
Isolation of volatile and fixed oils from nutmeg have been obtained by supercritical fractioned extraction with carbon dioxide. Extraction experiments were carried out at pressures of 90 and 250 bar and temperature of 40 °C. The extraction step performed at 90 bar produced a volatile fraction mainly
The leaf essential oils of Zanthoxylum rhoifolium and Zanthoxylum setulosum (Rutaceae) from Monteverde, Costa Rica have been obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry. The principal constituents of Z. rhoifolium leaf oil were germacrene D (14.6%), limonene
Essential oils (EOs) from leaves and branches of Aniba parviflora (Meisn.) Mez were obtained by hydrodistillation and their chemical compositions determined by gas chromatography - mass spectrometry. Oxygenated sesquiterpenoids were the most representative compound class in both EOs (~ 40%).
OBJECTIVE
The bioactivities of Santolina corsica Jord. & Fourr. n-hexane (EHS) and methanol (EMS) extracts were evaluated in relation to their chemical profile.
METHODS
EHS and EMS were analysed by gas chromatography-mass spectrometry () and high performance liquid chromatography-diode array
BACKGROUND
The aim of this work was to study the constituents and cytotoxicity of the essential oils from the fruits of Angelica archangelica growing in Iceland.
METHODS
Three samples of essential oils were prepared by steam distillation. Their composition was established with GC/MS. The effects of
The essential oil from the leaves of Phoebe formosana from Taiwan was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. Seventy-one compounds were identified, representing 100% of the oil. The main components identified were a-humulene (16.8%),
Two novel tricyclic spirolactones bearing long linear alkyl chains, yaoshanenolides A (1) and B (2), formed by Diels-Alder[4 + 2] cycloaddition of a molecule of each butenolide with β-phellandrene, were isolated from the bark of Machilus yaoshansis. Their structures and absolute configurations were
Essential oils were obtained by steam distillation from berries of Schinus molle L. and Schinus terebinthifolius Raddi originating from southern of Tunisia and analyzed by GC-FID and GC-MS. Among 57 and 62 compounds (%[mg/100 g dry matter]) identified in these oils, the main were alpha-phellandrene
BACKGROUND
Inflammation and cell differentiation lead to a number of severe diseases. In the recent years, various studies focused on the anti-inflammatory and anticancer activity of essential oils (EOs) of numerous plants, including different Pinus species.
OBJECTIVE
The phytochemical composition,
The chemical composition and biological activities of the essential oil (EO) from the rhizomes of Zingiber striolatum Diels were reported for the first time. Forty-five compounds were identified, and represented 95.7% of the total composition of the EO. The predominant components of the EO were
Chemical composition, anti-inflammatory activity, and cytotoxicity of essential oils obtained from the aerial parts of Trachydium roylei were investigated in this study. The chemical composition of T. roylei essential oil was analyzed using gas chromatography mass spectrometry. Fifty-nine