Search results for "Ascaridole"

showing 3 items of 3 documents

Herbicidal Activity of Peumus boldus and Drimys winterii Essential Oils from Chile

2011

[EN] The essential oil composition of Peumus boldus and Drimys winterii was analyzed by means of capillary GC-FID and GC-MS. More than 96% of the total oil components (43 and 54 compounds, respectively) were identified, with ascaridole (51.17 ± 9.51), p-cymene (16.31 ± 2.52) and 1,8-cineole (14.45 ± 2.99) as the main compounds in P. boldus and ¿-eudesmol (21.65 ± 0.41), followed of elemol (12.03 ± 0.34) and terpinen-4-ol (11.56 ± 1.06) in D. winterii. The herbicidal activity was tested against Amaranthus hybridus and Portulaca oleracea. P. boldus essential oil was the most phytotoxic against both weeds, inhibiting seed germination and seedling growth at all concentrations assayed (0.125-1 ¿…

DrimysChromatography GasAmaranthus hybridusBOTANICAPharmaceutical ScienceGerminationPortulacaEssential oilArticleAnalytical Chemistrylaw.inventionlcsh:QD241-441chemistry.chemical_compoundlcsh:Organic chemistrylawDrug DiscoveryBotanyOils VolatilePhysical and Theoretical ChemistryChileSeedling growthEssential oilBIOLOGIA VEGETALGas chromatographybiologyMass spectrometryHerbicidesOrganic Chemistrybiology.organism_classificationDrimysChemistrychemistryIsolation and purificationChemistry (miscellaneous)GerminationSeedlingEssential oilsPhytotoxicityPeumusMonoterpenesMolecular MedicinePhytotoxicityHerbicideAscaridoleessential oils; phytotoxicity; germination; seedling growth; monoterpenesPeumus boldus
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Control of Portulaca oleracea by boldo and lemon essential oils in different soils

2015

Soil characteristics influence plant growth and can affect the phytotoxicity of the essential oils. In this study chemical composition and herbicidal activity of Peumus boldus Mol. and lemon essential oils in different growing medium against Portulaca oleracea L. was investigated. Ninety-four compounds accounting between 95.5 and 99.8% of the total essential oil were identified by gas chromatography-mass spectrometry in boldo and lemon essential oils. Ascaridole (31.56. ±. 0.15%), p-cymene (21.58. ±. 0.09%) and 1,8-cineole (12.57. ±. 0.13%) were the main compounds in P. boldus whereas large amount of limonene (59.28%) followed of β-pinene (12.96%) and γ-terpinene (10.92%) were found in lemo…

LimoneneHerbicidal activitybiologyGerminationPortulacaHydroponicsbiology.organism_classificationlaw.inventionchemistry.chemical_compoundHorticulturechemistryAgronomyGerminationlawLemon essential oilPhytotoxicityGC–MSBoldoAscaridolePortulaca oleraceaAgronomy and Crop ScienceEssential oilPeumus boldus
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Über die autoxydation ungesättigter verbindungen. IV. Mitt. Die autoxydation des 2.3-dimethylbutadiens (1.3) und des 10.12-octadecadiensäuremethylest…

1955

Die spontane Autoxydation des Dimethylbutadiens, die zu polymeren Peroxyden fuhrt, wird kinetische verfolgt und mit der Autoxydation des konjugierten 10, 12-Octadecadiensauremethylesters verglichen. Beide Reaktionen verlaufen autokatalytisch. Die Reaktionsgeschwindigkeit ist zu Beginn der Wurzel aus dem Autoxydationsgrad (Mol O2/Mol Substrat) proportional. Die gebildeten Peroxyde zerfallen monomolekular in kettenstartende Radikale. Die Brutto-aktivierungsenergieen werden angegeben. Die Einwirkung von Azodiisobuttersaurenitril, Ascaridol, Di-tert.-Butylperoxyd und Cu++ -oktoat auf die Autoxydation des 10,12-Octadecadiensauremethylesters wird untersucht. Es ergibt sich, das auch die Autoxydat…

chemistry.chemical_compoundDienechemistryAutoxidationRadicalCopper saltPolymer chemistryAscaridoleDie Makromolekulare Chemie
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