Study of the essential oils from the leaves and flowers ofLepechinia conferta (Benth) Epl.

Borges, Rebeca; Rojas, Luis; Cegarra, J. A.; Usubillaga, Alfredo

doi:10.1002/ffj.1550

Cited by 11 publications

(25 citation statements)

References 17 publications

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“…Sesquiterpenes, diterpenes, triterpenes, and flavonoids have been isolated from different species of this genus. Some species are used for their antitumor and insulin‐mimetic properties, to treat uterine infections and stomach pains . Regarding the essential oil components, 15 species of the genus Lepechinia have been studied so far, including L .…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition, Enantiomeric Analysis, AEDA Sensorial Evaluation and Antifungal Activity of the Essential Oil from the Ecuadorian Plant Lepechinia mutica Benth (Lamiaceae)

Ramírez

Gilardoni

Jácome

et al. 2017

Chemistry & Biodiversity

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This study describes the GC-FID, GC/MS, GC-O, and enantioselective GC analysis of the essential oil hydrodistilled from leaves of Lepechinica mutica (Lamiaceae), collected in Ecuador. GC-FID and GC/MS analyses allowed the characterization and quantification of 79 components, representing 97.3% of the total sample. Sesquiterpene hydrocarbons (38.50%) and monoterpene hydrocarbons (30.59%) were found to be the most abundant volatiles, while oxygenated sesquiterpenes (16.20%) and oxygenated monoterpenes (2.10%) were the minor components. In order to better characterize the oil aroma, the most important odorants, from the sensorial point of view, were identified by Aroma Extract Dilution Analysis (AEDA) GC-O. They were α-Pinene, β-Phellandrene, and Dauca-5,8-diene, exhibiting the characteristic woody, herbaceus, and earthy odors, respectively. Enantioselective GC analysis of L. mutica essential oil revealed the presence of twelve couples and two enantiomerically pure chiral monoterpenoids. Their enantiomeric excesses were from a few percent units to 100%. Moreover, the essential oil exhibited moderate in vitro activity against five fungal strains, being especially effective against M. canis, which is a severe zoophilic dermatophyte causal agent of pet and human infections.

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Section: Introductionmentioning

confidence: 99%

Chemical Composition, Enantiomeric Analysis, AEDA Sensorial Evaluation and Antifungal Activity of the Essential Oil from the Ecuadorian Plant Lepechinia mutica Benth (Lamiaceae)

Ramírez

Gilardoni

Jácome

et al. 2017

Chemistry & Biodiversity

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“…The compositions of the essential oils of some species of Lepechinia have been reported previously (19)(20)(21)(22)(23); the principal components found in the essential oil of L. paniculata have also been reported in other species like L. conferta from Colombia and Venezuela, the oils from leaves and flowers of L. conferta have been studied showing the main constituents being those of b-phellandrene (9.7% and 11.8%) and aromadendrene (4.5% and 3.6%) (19). bphellandrene (30%) has been identified as the main component in L. mutica from Ecuador which belongs to the monoterpene group (20).…”

Section: Resultsmentioning

confidence: 97%

Chemical composition of essential oils of two species of the Lamiaceae family:Scutellaria volubilisandLepechinia paniculatafrom Loja, Ecuador

Valarezo

Castillo

Guaya

et al. 2012

Journal of Essential Oil Research

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Scutellaria volubilis and Lepechinia paniculata belong to the Lamiaceae family of species. They are used widely in traditional medicine in Ecuador. The physical properties and chemical composition of the essential oils from the aerial part of Scutellaria volubilis in its foliation -flowering stage and Lepechinia paniculata in its flowering phase have been studied after their hydrodistillation. The components of these essential oils were investigated by means of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/flame ionization detection (GC/FID) techniques. Thirty-seven components were determined in the essential oil of S. volubilis. The principal constituents were found to be sesquiterpene hydrocarbons: germacrene D (20.4%), b-caryophyllene (17.5%), a-humulene (14.7%) and b-bisabolene (5.8%). Thirty-four components were identified in the essential oil of L. paniculata, the principal groups were sesquiterpene hydrocarbons such as aromadendrene (24.6%), viridiflorene (12.4%), b-selinene (7.4%) and valencene (6.7%). The monoterpene hydrocarbons were present in lower amounts as well as b-phellandrene (6.9%) and (7.7%). Oxygenated monoterpenes and sesquiterpenes contribute below 5% in both species. This is the first report on the chemical composition of this species.

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“…Moreover, their retention indices (RI) were compared to that of the National Institute of Standards and Technology (NIST) Chemistry web book (http://webbook.nist.gov/chemistry/) and published articles on plant volatiles analyzed in the same stationary phase (Borges et al, 2006;Egigu et al, 2010;Ibrahim et al, 2010). Moreover, their retention indices (RI) were compared to that of the National Institute of Standards and Technology (NIST) Chemistry web book (http://webbook.nist.gov/chemistry/) and published articles on plant volatiles analyzed in the same stationary phase (Borges et al, 2006;Egigu et al, 2010;Ibrahim et al, 2010).…”

Section: Collection and Analysis Of Volatile Organic Compoundsmentioning

confidence: 99%

Cordeauxia edulis and Rhododendron tomentosum extracts disturb orientation and feeding behavior of Hylobius abietis and Phyllodecta laticollis

Egigu

Ibrahim

Yahya

et al. 2010

Entomologia Experimentalis Et Applicata

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The use of plant-based compounds to control insect pests is an alternative to the use of synthetic pesticides. We evaluated the repellent and antifeedant effects of Cordeauxia edulis Hemsley (Fabaceae) and Rhododendron tomentosum Harmaja (Ericaceae) extracts against Hylobius abietis L. (Coleoptera: Curculionidae) and Phyllodecta laticollis Suffrian (Coleoptera: Chrysomelidae). Repellent properties were evaluated by monitoring responses of adult insects toward the odor from extracts or extraction solvents (controls) in a Y-tube olfactometer, and choice or no-choice feeding tests were conducted by applying extracts or extraction solvents on stems of Scots pine [Pinus sylvestris L. (Pinaceae)] and European aspen [Populus tremula L. (Salicaceae)], host plants of H. abietis and P. laticollis, respectively. Extracts of R. tomentosum repelled adults of both insect species effectively. However, extracts of C. edulis did not repel H. abietis although its ethyl acetate extract showed repellence against the adults of P. laticollis. Feeding by H. abietis was significantly reduced by a methanol extract of C. edulis, and methanol and hexane extracts of R. tomentosum. Feeding by the adults and larvae of P. laticollis was significantly reduced by extracts from both plant species. Concomitant with less feeding, larval growth was retarded by ethyl acetate extracts of both plant species. Gas chromatography-mass spectrometry analyses of the volatile components of the extracts showed that extracts from both plant species were mixtures of various terpene and non-terpene compounds, which showed quantitative and ⁄ or qualitative variations between plant species and extraction solvents. This experiment showed that extracts from both plant species effectively manipulated the orientation and ⁄ or feeding behavior of the two beetle species. Hence, they may be considered as potential alternatives to synthetic chemical pesticides.

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Study of the essential oils from the leaves and flowers ofLepechinia conferta (Benth) Epl.

Cited by 11 publications

References 17 publications

Chemical Composition, Enantiomeric Analysis, AEDA Sensorial Evaluation and Antifungal Activity of the Essential Oil from the Ecuadorian Plant Lepechinia mutica Benth (Lamiaceae)

Chemical Composition, Enantiomeric Analysis, AEDA Sensorial Evaluation and Antifungal Activity of the Essential Oil from the Ecuadorian Plant Lepechinia mutica Benth (Lamiaceae)

Chemical composition of essential oils of two species of the Lamiaceae family:Scutellaria volubilisandLepechinia paniculatafrom Loja, Ecuador

Cordeauxia edulis and Rhododendron tomentosum extracts disturb orientation and feeding behavior of Hylobius abietis and Phyllodecta laticollis

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