Search results for "β-Caryophyllene"

showing 3 items of 3 documents

Identification of volatile synomones, induced by Nezara viridula feeding and oviposition on bean spp., that attract the egg parasitoid Trissolcus bas…

2004

Bean plants ( Vicia faba L. and Phaseolus vulgaris L.) damaged by feeding activity of Nezara viridula (L.) ( Heteroptera: Pentatomidae), and onto which an egg mass had been laid, produced volatiles that attracted the egg parasitoid Trissolcus basalis (Wollaston) (Hymenoptera: Scelionidae). Extracts of volatiles of broad bean and French bean plants induced by adults of N. viridula as a result of their feeding activity, oviposition activity, and feeding and oviposition activity combined were analyzed by gas chromatography-mass spectrometry (GC-MS), and tested in Y-tube olfactometer bioassays as attractants for T. basalis females. In extracts from undamaged leguminous plants, green-leaf volati…

Chromatography GasEggsOvipositionHymenopteraBiochemistryMass SpectrometryParasitoidHost-Parasite InteractionsHeteropteraBotanyAnimalsEcology Evolution Behavior and SystematicsEcosystemScelionidaePolycyclic SesquiterpenesbiologyPlant ExtractsTerpenesLegume Insecta Heteroptera Pentatomidae Scelionidae egg parasitoid oviposition-induced synomone terpenoid (E)-β-caryophyllenefungifood and beveragesGeneral MedicineFeeding BehaviorPentatomidaebiology.organism_classificationHymenopteraSettore AGR/11 - Entomologia Generale E ApplicataOlfactometerNezara viridulaOdorantsBiological AssayFemalePEST analysisSoybeansPhaseolusVolatilizationSesquiterpenes
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Essential oil compositions of Teucrium fruticans, T. scordium subsp. scordioides and T. siculum growing in Sicily and Malta

2020

In the present study, the chemical composition of the essential oils from the aerial parts of Teucrium fruticans L. collected in Sicily and Malta, Teucrium scordium subsp. scordioides (Schreb.) Arcang. and Teucrium siculum (Raf.) Guss., collected in Sicily, were evaluated by GC-MS. The main volatile components of both T. fruticans collections were germacrene D (29.4% and 50.0%), (E)-β-caryophyllene (19.6% and 21.9%), and 1-octen-3-ol (19.7% and 7.4%); T. scordium subsp. scordioides essential oil was rich in caryophyllene oxide (25.8%), α-pinene (19.4%) and β-pinene (8.5%); T. siculum essential oil was rich in (E)-β-caryophyllene (30.9%), 1-octen-3-ol (9.0%), α-humulene (8.6%) and germacrene…

Teucrium ssp.Organic ChemistryVolatile componentsSettore CHIM/06 - Chimica OrganicaPlant ScienceBiology1-Octen-3-olbiology.organism_classificationBiochemistryAnalytical Chemistrylaw.inventionChemotaxonomyTeucrium(E)-β-CaryophylleneCaryophyllene oxidelawBotanyTeucrium scordiumSettore BIO/15 - Biologia FarmaceuticaGermacrene DEssential oilGermacrene DNatural Product Research
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Pyrolytic formation of polycyclic aromatic hydrocarbons from sesquiterpenes

2012

Author's version of an article in the journal: Food Chemistry. Also available from the publisher at: http://dx.doi.org/10.1016/j.foodchem.2012.06.033 The products of the pyrolysis of four sesquiterpenes, β-caryophyllene, α-cedrene, longifolene and valencene, have been examined. Pyrolysis was carried out at 300, 400 and 500 °C, the products determined by GC–MS and then examined for similarities and differences using multivariate data analysis. Analysis showed that longifolene was most resistant and caryophyllene least resistant to pyrolysis with cedrene and valencene occupying intermediate positions. While the compounds were largely unchanged at 300 °C, polycyclic aromatic hydrocarbons (PAHs…

sesquiterpeneHot TemperatureCedrenePolycyclic aromatic hydrocarbonSesquiterpeneAnalytical Chemistrychemistry.chemical_compoundValencenepolycyclic aromatic hydrocarbonOrganic chemistryPyrolytic carbonPolycyclic Aromatic Hydrocarbonschemistry.chemical_classificationMolecular StructureVDP::Mathematics and natural science: 400::Chemistry: 440CaryophyllenelongifolenePAHGeneral Medicinepyrolysisα-Cedrenechemistryβ-CaryophylleneLongifoleneSesquiterpenesvalencenePyrolysisFood ScienceFood Chemistry
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