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| Registros recuperados: 114 | |
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| Salomé Abarca, Luis Francisco. |
| La caléndula (Calendula officinalis) es una especie herbácea originaria de Egipto, que se cree fue introducida a Europa en el siglo XII. En México es cultivada como una planta medicinal y de ornato, en lugares con clima semiseco y templado. En la zona de los valles centrales de México, Palma observó amplia diversidad fenotípica en una variedad común de caléndula, y eligió seis variantes en la morfología floral de esa población heterogénea, a las cuales denominó de la S1 a la S6. El objetivo de este estudio fue comparar morfotipos florales de caléndula en cuanto a crecimiento, eficiencia fotosintética, y contenido de aceites esenciales, a través de modelaje y cinéticas de crecimiento, cinéticas fotosintéticas, técnicas de extracción para aceites y de... |
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Palavras-chave: Acumulación de biomasa; Rendimiento floral; Parámetros Fotosintéticos; Aceite esencial; &-Cadineno; Biomass accumulation; Floral yield; Photosynthetic limitation; Essential oil; &-Cadinene; Fisiología Vegetal; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2217 |
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| López,Molkary Andrea; Stashenko,Elena E.; Fuentes,Jorge Luis. |
| The present work evaluated the chemical composition and the DNA protective effect of the essential oils (EOs) from Lippia alba against bleomycin-induced genotoxicity. EO constituents were determined by Gas Chromatography/Mass Spectrometric (GC-MS) analysis. The major compounds encountered being citral (33% geranial and 25% neral), geraniol (7%) and trans-β-caryophyllene (7%) for L. alba specimen COL512077, and carvone (38%), limonene (33%) and bicyclosesquiphellandrene (8%) for the other, COL512078. The genotoxicity and antigenotoxicity of EO and the compounds citral, carvone and limonene, were assayed using the SOS Chromotest in Escherichia coli. The EOs were not genotoxic in the SOS chromotest, but one of the major compound (limonene) showed genotoxicity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lippia alba; Essential oil; Antigenotoxicity; Bleomycin; SOS chromotest. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300019 |
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| Takita,Marco A.; Berger,Irving J.; Basílio-Palmieri,Ana Carolina; Borges,Kleber M.; Souza,Juliana M. de; Targon,Maria L.N.P.. |
| Terpenoids constitute the largest and most diverse class of natural products. They are important factors for aroma and flavor, and their synthesis is basically done from two compounds: isopentenyl diphosphate and dimethylallyl diphosphate. Isopentenyl diphosphate is synthesized through two different pathways, one that occurs in the cytoplasm and one in the plastid. With the sequencing of ESTs from citrus, we were able to perform in silico analyses on the pathways that lead to the synthesis of terpenes as well as on the terpene synthases present in sweet orange. Moreover, expression analysis using real-time qPCR was performed to verify the expression pattern of a terpene synthase in plants. The results show that all the pathways for isopentenyl diphosphate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: EST; Fruit; Terpenoids; Orange; Essential oil. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500012 |
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| SA, C. P. de; PIMENTEL, F. A.; SANTOS, J. C. dos; NASCIMENTO, G. C. do; GOMES, F. C. da R.. |
| A pimenta longa (Piper hispidibnervum C.DC.), espécie nativa do Acre, apresenta características de planta pioneira, sendo encontrada em grande densidade, em áreas de capoeira localizadas no Vale do Rio Acre. A espécie apresenta um óleo essencial rico em safrol de alto valor comercial, com rendimento que pode chegar a 4% em relação ao peso seco das folhas e ramos finos. O interesse pelo cultivo da pimenta longa originou-se da crescente demanda de safrol natural dos mercados nacional e internacional, visto que os países fornecedores deste éter fenólico (China e Vietnã) correm sérios riscos de não mais poderem atender, em médio e longo prazo, à demanda por esse óleo essencial, devido ao sistema predatório utilizado no processo de extração. |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Análisis de costo-beneficio; Aceites essenciales; Análisis económico; Essential oil; Insumos agrícolas; Safrol.; Insumo; Análise econômica; Análise de custo-benefício.; Piper hispidinervum; Pimenta longa; Óleo essencial; Sistema de produção; Economic analysis; Piper longum; Cost benefit analysis.; Safrole; Farm inputs. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/503355 |
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| Randrianarivelo, Roger; Sarter, Sarnira; Odoux, Eric; Brat, Pierre; Lebrun, Marc; Romestand, Bernard; Menut, Chantal; Andrianoelisoa, Hanitriniaina Sahondra; Raherimandimby, Marson; Danthu, Pascal. |
| Essential oil samples of Cinnamosma fragrans from two regions in Madagascar, Tsaramandroso (38 samples) and Mariarano (30 samples), were analysed by GC/MS. Fifty-seven components were identified, accounting from 88.3% to 99.4% of the oils' composition. The major components were linalool (72.5 +/- 23.3%) in Tsaramandroso and 1,8-cineole (47.3 +/- 10.2%) in Mariarano. Samples B8 (95.8% linalool) from Tsaramandroso and B143 (71.6% 1,8-cineole) from Mariarano containing the highest proportions of the two main components identified, were selected to determine antimicrobial activities against 10 microbial strains. Bacillus subtilis and Staphylococcus aureus were the most sensitive strains to both oils. Minimum inhibitory concentration (MIC) values were lower for... |
| Tipo: Text |
Palavras-chave: Madagascar; 1.8 Cineole; Linalool; Antimicrobial activity; Essential oil; Cinnamosma fragrans. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6242.pdf |
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| Silva,Lenise de Lima; Silva,Daniela Thomas da; Garlet,Quelen Iane; Cunha,Mauro Alves; Mallmann,Carlos Augusto; Baldisserotto,Bernardo; Longhi,Solon Jonas; Pereira,Ana Maria Soares; Heinzmann,Berta Maria. |
| There is an increasing demand for inexpensive and safe anesthetics that can reduce fish stress caused by some procedures such as capture and handling. In this context, the present study evaluated the potential of essential oils (EO) of three Brazilian native plants (Hesperozygis ringens, Lippia sidoides and Ocotea acutifolia) as anesthetics for the silver catfish - Rhamdia quelen. Moreover, an analysis was made of the chemical composition of these oils and their influence on stress parameter. EO of H. ringens and O. acutifolia were effective as anesthetics, without behavioral side effects. EO of O. acutifolia (150 µL L-1) promoted an increase in blood glucose level. Regarding to the composition, pulegone accounts for 96.63% of the EO of H. ringens, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential oil; Hesperozygis ringens; Lippia sidoides; Ocotea acutifolia; Stress. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200443 |
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| Vieira, Fábio de Almeida; Fajardo, Cristiane Gouvêa; Carvalho, Dulcinéia de. |
| O objetivo deste trabalho foi examinar e documentar a biologia floral e os polinizadores da candeia (Eremanthus erythropappus) em uma população natural, sendo estudados a antese, a morfologia floral, a receptividade estigmática, a viabilidade de pólen e os visitantes florais. As flores pequenas (10,17 mm de comprimento) são cor de rosa, hermafroditas e organizadas em densos capítulos (média = 29 flores). Foi observada alta porcentagem de pólen viável (77,25%) e relativamente pouca disponibilidade de néctar para os visitantes florais (0,63 μL). As abelhas Apis mellifera e Trigona sp. foram os visitantes mais frequentes. Os comprimentos dos botões, estiletes e flores variaram significativamente entre plantas. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antese; Viabilidade de pólen; Visitantes florais; Óleo essencial Recursos Florestais; Engenharia Florestal; Botânica; Reprodução Anthesis; Pollen viability; Floral visitors; Essential oil. |
| Ano: 2012 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/402 |
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| Alvarenga,Ivan Caldeira Almeida; Valadares,Rafael Vasconcelos; Martins,Ernane Ronie; Oliveira,Flávio Gonçalves; Figueiredo,Lourdes Silva de; Kobayashi,Mauro Koji. |
| The objective of this work was to assess the effect of different periods of water stress before harvest of pepper-rosmarin (Lippia sidoides) on the contents of essential oil and flavonoids. The experiment was carried out during 270 days of cultivation, with drainage lysimeters, in a completely randomized block design with five treatments: 0, 2, 4, 6, and 8 days of water suppression before harvest, with four replicates. Fresh and dry matter yield, essential oil content, total flavonoids content, and water potential and temperature of leaves were determined. There was a decrease of approximately 50% in oil content and of 60% in total flavonoid content with the reduction of leaf water potential in 0.3 MPa. Essential oil is more sensitive to water stress than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lippia sidoides; Essential oil; Flavonoids; Leaf water potential; Medicinal plant; Water stress. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000700005 |
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| Ventrella,Marília Contin; Marinho,Cristina Ribeiro. |
| The objective of this work was to study, using light and fluorescence microscopy and scanning electron microscopy, the morphology and secretory products of glandular trichomes of Cordia verbenacea DC. (Boraginaceae), known as 'baleeira', a species used in folk medicine as anti-inflammatory, analgesic, anti-ulcerogenic and healing agent. Two classes of glandular trichomes were recognized, globular and reniform. A morphological study of the secretory head and the characterization of the secretory product are also presented. Secretory products of globular trichomes consisted of essential oils, whereas reniform trichomes consisted basically of phenolic compounds such as flavonoids. No pre-established regions for releasing secretory products were found. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 'baleeira'; Essential oil; Fenolic compounds; Secretory product. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000300010 |
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| Fascina,VB; Pasquali,GAM; Carvalho,FB; Muro,EM; Vercese,F; Aoyagi,MM; Pezzato,AC; Gonzales,E; Sartori,JR. |
| ABSTRACT The present study was conducted to evaluate the effects of phytogenic additives (PA) and organic acids (OA), alone or in combination, on the performance, intestinal histomorphometry and lipid oxidation, and immune responses of broiler chickens. In this experiment, 820 one-day-old chicks were distributed according to a completely randomized design in a 2 × 2 + 1 factorial arrangement, with four replicates of 41 broilers each. The dietary treatments consisted of a control diet with no PA or OA (CD); CD with OA and no PA (CD+OA-PA); CD with PA and no OA (CD+PA-CD); CDwith both PA and OA (CD+PA+CD); and CD + avilamycin + monesin sodium. Broiler performance was not affected by the alternative feed additives, except from 1 to 21 days, when broilers fed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidifier; Essential oil; Immunity; Intestinal histology; Plant extract. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300497 |
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| Volpato,A; Lorenzetti,WR; Zortea,T; Giombelli,LCDD; Baretta,D; Santos,RCV; Vaucher,RA; Raffin,RP; Souza,ME; Stefani,LM; Boligon,AA; Athayde,ML; Silva,AS da. |
| ABSTRACT The aim of this study was to evaluate the in vitro bioactivity of tea tree (Melaleuca alternifolia) essential oil against larvae and adult forms of lesser mealworms (Alphitobius diaperinus) and its influence on the soil fauna. Tests were performed in triplicate using pure tea tree oil (TTO; 1, 5, 10, 25, 50, and 100%), TTO nanoparticles (1, 3, and 7.5%), or terpinen-4-ol, the main compound of the tea tree oil, at the same concentrations of TTO. Larvae and adult mortality occurred at concentrations up to 10 and 50% of TTO, respectively. No larvicidal or insecticidal effect of TTO nanoparticles was observed. Terpinen-4-ol showed insecticidal and larvicidal effect at concentrations higher than 25%. The evaluation of TTO effect on soil organisms was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alphitobius diaperinus; Essential oil; Natural products; Nanotechnology; Pest management. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100041 |
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| Göze,I; Erşan,S; Aydin,H; Ercan,N; Dönmez,E. |
| ABSTRACT The aim of this study was to determine the LD30 values of the essential oils of Origanum minutiflorum He Schwarz-PH Davis (OM) and Juniperus excelca by Bieb.subsp. Excel (JE) in vivo investigation on the effects of malondialdehyde (MDA), vitamin C and some biochemical parameters. In this, study the essential oils of OM and JE plants were used. LD50 values of the essential oils were determined by using rats. OM (n=10), JE (n=10), carvacrol (n=10) which dissolve in olive oil were used as experimental group and as control group saline (SF) (n=8) and solvent Olive oil (n=10) were used and applied intraperitoneal on rats for 12 days in LD30 dosages. In the end of 12 days, Vit-C, malondialdehyde (MDA) and routine biochemical analyses were studied on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Origanumminutiflorum O Schwarz-PH Davis; Juniperusexcelca Bieb.subsp.excelca; Essential oil; Vitamin C; Malondialdehyde; Enzyme. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200306 |
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| Ríos,Natalia; Stashenko,Elena E.; Duque,Jonny E.. |
| Abstract The search for new insecticides to control dengue fever, chikungunya, and Zika vectors has gained relevance in the past decades. The aim of the present study was to evaluate the larvicidal action of essential oils (EOs) from Thymus vulgaris, Salvia officinalis, Lippia origanoides, Eucalyptus globulus, Cymbopogon nardus, Cymbopogon martinii, Lippia alba, Pelargonium graveolens, Turnera diffusa, and Swinglea glutinosa on Aedes (Stegomyia) aegypti. The EOs were extracted by microwave-assisted hydrodistillation and characterized by gas chromatography/mass spectrometry (GC/MS). The chemical components of the EOs were identified by linear retention indices and mass spectra. Lethal concentrations (LC50 and LC95) were determined by probit analysis using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential oil; Larvicidal activity; Mosquito control. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000400307 |
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| Registros recuperados: 114 | |
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