Search results for " essential oil composition"

showing 4 items of 4 documents

Chemical Composition and antimicrobial activity of the essential oils from two species of Thimus growing wild in southern Italy

2009

The volatile constituents of the aerial parts of two samples of Thymus longicaulis C. Presl, collected in Campania and in Sicily, and two samples of Thymus pulegioides L. from the same regions, were extracted by hydrodistillation and analyzed. Considering the four oils together, seventy-eight different compounds were identified: 57 for Thymus longicaulis from Sicily (91.1% of the total oil), 40 for Thymus longicaulis from Campania (91.5% of the oil), 39 for Thymus pulegioides from Sicily (92.5% of the oil) and 29 for Thymus pulegioides from Campania (90.1% of the oil). The composition of the oils is different, although the most abundant components are identical in T. pulegioides. The essent…

<em>Thymus longicaulis</em> C. Presl; <em>Thymus pulegioides </em>L.; essential oil composition; thymol; geraniol; antibacterial activityThymus pulegioidesPharmaceutical ScienceMicrobial Sensitivity TestsArticleAnalytical Chemistrylcsh:QD241-441Thymus Plantchemistry.chemical_compoundlcsh:Organic chemistryantibacterial activitythymolDrug DiscoveryBotanyOils VolatilePlant OilsThymus PlantSettore BIO/15 - Biologia FarmaceuticaPhysical and Theoretical ChemistrygeraniolThymolChemical compositionessential oil compositionThymus longicaulisbiologyBacteriaThymus pulegioides L.Organic ChemistrySettore CHIM/06 - Chimica Organicabiology.organism_classificationAntimicrobialAnti-Bacterial AgentschemistryItalyantimicrobial activity essential oils Thimus longicaulis Thimus pulegioidesChemistry (miscellaneous)Molecular MedicineComposition (visual arts)Thymus longicaulis C. PreslGeraniol
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Effects of air pollution on production of essential oil in Feijoa Sellowiana Berg. grown in the "Italian triangle of death"

2010

The composition of the essential oils of fruits from Feijoa sellowiana grown in the district of Acerra is compared with those collected from unpolluted sites. Essential oils from the fruits of F. sellowiana were analysed by GC/MS. Sixty compounds, representing 96.6% and 97.8% (unpolluted site and Acerra site, respectively) of the oils, were identified. The major constituents were β-caryophyllene (12.4% and 16.8%), ledene (9.6% and 11.1%), α-humulene (6.3% and 8.2%), β-elemene (4.9% and 5.3%) and δ-cadinene (4.7% and 5.2%) in the control site and Acerra site, respectively. The antioxidant components were increased in response to polluted condition. The acetonic extracts of F. sellowiana from…

PollutionAntioxidantAcerramedicine.medical_treatmentmedia_common.quotation_subjectair pollutionAir pollutionmedicine.disease_causeFlavoneslaw.inventionFeijoa sellowianalawBiomonitoringBotanymedicineessential oilsmetabolitesEssential oilGeneral Environmental Sciencemedia_commonchemistry.chemical_classificationbeta-caryophyllenebiologyChemistryMyrtaceaePublic Health Environmental and Occupational HealthFeijoa sellowiana essential oils oil composition beta-caryophyllene Acerra biomonitoring air pollution air quality metabolites Italy.Settore CHIM/06 - Chimica Organicabiology.organism_classificationair qualityHorticultureItalyoil compositionbiomonitoringComposition (visual arts)Feijoa sellowiana essential oil composition beta-caryophyllene
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Volatile Constituents ofTeucrium poliumL. from Turkey

1998

Abstract The volatile constituents obtained from the aerial parts of Teucrium polium were analyzed by GC and GC/MS. The oil was found to contain 37 components, of which 30 were identified. The major constituents were β-pinene (18.0%), β-caryophyllene (17.8%), α-pinene (12.0%), caryophyllene oxide (10.0%), myrcene (6.8%) and germacrene-D (5.3%)

chemistry.chemical_compoundfoodCaryophyllene oxideGermacreneChemistryMyrceneBotanyGeneral Chemistryβ caryophylleneGas chromatography–mass spectrometry?-pinene; ?-caryophyllene; ?-pinene; Caryophyllene oxide; Essential oil composition; GC/MS; Labiatae; Teucrium poliumTeucrium poliumfood.foodJournal of Essential Oil Research
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Chemical Composition and Antimicrobial Activity of the Essential Oils from Three Chemotypes of Origanum vulgare L. ssp. hirtum (Link) Ietswaart Growi…

2009

Essential oils obtained from inflorescences of three Origanum vulgare L.ssp. hirtum (Link) Ietswaart samples, growing wild in different locations in Campania (Southern Italy), were analysed. Three chemotypes were found: the first, with a prevalence of carvacrol/thymol; the second, characterized by the prevalence of thymol/alpha-terpineol; the third, featuring a prevalence of linalyl acetate and linalool. This chemical study attempts to provide a contribution in shedding light on the relationship between chemical composition and biotypes and/or chemotypes in Origanum vulgare ssp. hirtum. The essential oils were also evaluated for their antibacterial activity against 10 selected microorganism…

Chromatography GasAcyclic MonoterpenescarvacrolPharmaceutical ScienceCyclohexane MonoterpenesMicrobial Sensitivity TestsLinalyl acetateCymenesArticleGas Chromatography-Mass SpectrometryAnalytical Chemistrylcsh:QD241-441chemistry.chemical_compoundOriganum vulgare ssp. hirtumantibacterial activitylcsh:Organic chemistryLinaloolOriganumthymolCyclohexenesDrug DiscoveryBotanyOils VolatilePlant OilsCarvacrollinalyl acetatePhysical and Theoretical ChemistryThymolessential oil compositionBacteriabiologyChemotypeOrganic ChemistryOriganum vulgare ssp. hirtum; essential oil composition; thymol; carvacrol; linalyl acetate; antibacterial activityOriganumbiology.organism_classificationAntimicrobialAnti-Bacterial AgentsItalychemistryChemistry (miscellaneous)MonoterpenesCymenesMolecular MedicineMolecules
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