Identification of chrysanthenyl esters from Anthemis maritima essential oils investigated by GC-RI, GC/MS (EI and CI) and 13C-NMR spectroscopy. Chemical composition and variability

International audienceAnalysis of chemical compositions of 18 oil samples of Anthemis maritima L. essential oils from Corsica and Sardinia were investigated by GC, GC-MS and NMR. Integrated analysis allowed the identification of 124 components which accounted for 83.3 % to 91.6 % of the total amount. Principal components analysis established the occurrence of two clusters. The former cluster enclosed oil samples dominated by trans-chrysanthenyl acetate (34.9 - 68.5 %) while the latter cluster enclosed oil samples which exhibited 6-methyl-5-hepten-2-one (5.7 - 24.9 %) and cis-chrysanthenyl 2-methylbutyrate (3.2 - 15.4 %) as main components. The essential oils were dominated by oxygenated monoterpenes (16.4 - 81.8 %). Among them, 16 chrysanthenyl esters (10.8 - 74.5 %) were identified, 12 were laboratory-prepared and for the first time their 13C-NMR data and the 1H-NMR data of 7 of them were reported

Essential oil compositions of propolis and Populus nigra var. italica buds from Corsica island

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Etude chimique et biologique des huiles essentielles de Zanthoxylum zanthoxyloides (LAM.) du Sénégal

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GC/MS Analysis and comparison of volatile compounds of Salvia aucheri Boiss. var. mesatlantica Maire., obtained by Hydrodistillation and Headspace Solid Phase Microextraction (HS-SPME)

International audienceThe essential oil and the volatile compounds of Salvia aucheri Boiss. var. mesatlantica Maire were analyzed by gas chromatography (GC) and GC-mass spectrometry (GC-MS). The volatile compounds were detected using headspace-solid phase microextraction (HS-SPME) under optimized parameters. A comparative qualitative and quantitative study on the composition of the oils was carried out. For this, 38 compounds, constituting 95.40% of the oil, were identified in the essential oil by hydrodistillation (HD), and 32 compounds, representing 93% of the oil, were characterized by HS-SPME. The major components identified are camphor (49.80%, 51.80%), 1,8-cineole (9.50%, 9.40%), viridiflorol (8.80%, 1.40%), camphene (7.80%, 10.60%), α-pinene (2.90%, 4.50%), and p-cymene (1.50%, 2.40%) of essential oil and volatile compounds detected in HS-SPME, respectively. Quantitative but not qualitative differences have been found in the chemical composition of both analyzed samples depending on the extraction method. For these reasons, HS-SPME can be considered as an alternative technique for isolating volatiles from aromatic plants

Essential Oil composition and volatile constituents of Adenostyles briquetii Gamisans (syn. Cacalia briquetii)

International audienceThe essential oil of Adenostyles briquetii Gamisans (syn. Cacalia briquetii; family Asteraceae), an endemic species from Corsica, has been studied by GC (retention indices), GC/MS(EI and CI) and 13C-NMR. Thus, 142 components were identified representing 93% of the total amount. The essential oil was characterized by sesquiterpene hydrocarbons (52.8%) and oxygenated sesquiterpenes (25.9%). The major components were germacrene D (18.5%), zingiberene (12.9%) and -oplopenone (10.8%). In this study, the non terpenic esters of the oil have been investigated by GC/MS in different ionization modes: electron impact (EI), positive and negative chemical ionization (PCI and NCI) using ammonia as reagent gas. Furthermore, the analysis of volatile fraction of this plant was carried out using headspace-SPME and showed zingiberene, germacrene D, -elemene as the main components. To our knowledge, this work is the first report on the essential oil composition and on the volatile constituents of Adenostyles briquetii

Application of essential oil of Anvillea radiata as a green corrosion inhibitor for steel in 1M HCL solution

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