Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 14
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Carum copticum and Thymus vulgaris oils inhibit virulence in Trichophyton rubrum and Aspergillus spp BJM
Khan,Mohd Sajjad Ahmad; Ahmad,Iqbal; Cameotra,Swaranjit Singh.
Emergence of drug-resistant strains has demanded for alternative means of combating fungal infections. Oils of Carum copticum and Thymus vulgaris have long been used in ethnomedicine for ailments of various fungal infections. Since their activity has not been reported in particular against drug-resistant fungi, this study was aimed to evaluate the effects of oils of C. copticum and T. vulgaris on the growth and virulence of drug-resistant strains of Aspergillus spp. and Trichophyton rubrum. The gas chromatography-mass spectrometry analysis revealed thymol constituting 44.71% and 22.82% of T. vulgaris and C. copticum, respectively. Inhibition of mycelial growth by essential oils was recorded in the order of thymol > T. vulgaris > C. copticum against...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anti-elastase activity; Arthroconidia; Synergy; Thymol; Virulence.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200021
Imagem não selecionada

Imprime registro no formato completo
Controlled biocide release from hierarchically-structured biogenic silica: surface chemistry to tune release rate and responsiveness. Repositório Alice
MATTOS, B. D.; TARDY, B. L.; PEZHMAN, M.; KÄMÄRÄINEN, T.; LINDER, M.; SCHREINER, W. H.; MAGALHAES, W. L. E.; ROJAS, O. J..
Biocides are essential for crop protection, packaging and several other biosystem applications. Therein, properties such as tailored and controlled release are paramount in the development of sustainable biocide delivery systems. We explore the self-similar nano-organized architecture of biogenic silica particles to achieve high biocide payload. The high surface area accessibility of the carrier allowed us to develop an efcient, low energy loading strategy, reaching signifcant dynamic loadings of up to 100mg·g?1. The release rate and responsiveness were tuned by manipulating the interfaces, using either the native hydroxyl surfaces of the carrier or systems modifed with amines or carboxylic acids in high density. We thoroughly evaluated the impact of the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Biogenic silica; Biocide delivery system; Slow release; Nanoporous material; Chemical surface modification; Natural biocide; Nanobiocides; Fractal supra structure; Biological activity; Mesoporous silica; Functionalization of nanoparticles; Sistema de liberação de biocida; Nanotecnologia; Sílica biogênica; Liberação lenta; Material nanoporoso; Biocida natural; Timol; Modificação química de superfície; Nanobiocida; Supraestrutura fractal; Atividade biológica; Sílica mesoporosa; Funcionalização de nanopartículas; Biocides; Nanotechnology; Thymol.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091250
Imagem não selecionada

Imprime registro no formato completo
Drying temperature changes trichome integrity, chemical content and composition of the essential oil of pepper-rosmarin Ciência Rural
Queiroz,Giovanna Alcântara; Silva,Pedro Henrique Lopes; Oliveira,Rosilene Aparecida de; Sodré,George Andrade; Costa,Larissa Corrêa do Bomfim.
ABSTRACT: Medicinal plants are generally commercialized dried. However, temperatures used in their drying processes may interfere with the content and chemical composition of their essential oils. The Lippia origanoides possesses thymol in the essential oil that is stored in glandular trichomes. Thymol is a major component of economic importance in the chemical and pharmaceutical industry. The objective of this study was to evaluate the effect of the drying temperatures of L. origanoides leaves regarding trichome integrity, content, and chemical composition of the essential oil. The experimental design was completely randomized with four treatments defined by oven drying temperatures (40, 50, 60, and 70ºC) and four replications. Essential oil was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lippia origanoides; Medicinal plant; Secretory structures; Drying; Thymol.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100404
Imagem não selecionada

Imprime registro no formato completo
Effect of salt stress on the growth of Lippia gracilis Schauer and on the quality of its essential oil Acta Botanica
Ragagnin,Roberto Carlos Grillo; Albuquerque,Cynthia Cavalcanti; Oliveira,Francisco Fábio Mesquita; Santos,Ricardo Gonçalves; Gurgel,Eleneide Pinto; Diniz,Jaécio Carlos; Rocha,Simone Alves Serafim; Viana,Francisco Arnaldo.
This study evaluated the effect of salt stress on the growth of Lippia gracilis Schauer, a species native to the caatinga (shrublands) of Brazil and rich in essential oils, as well as on the quality of its oil. We exposed individuals of L. gracilis to NaCl, in the following concentrations, for a period of 40 days: 25 mM; 50 mM; 75 mM; and 100 mM. An additional group of plants was not exposed to NaCl (controls). Data were collected on days 20 and 40. We evaluated relative growth rate; shoot and root dry weight; relative water content; proline concentration in leaves; and chemical composition of the essential oil. At all concentrations, NaCl reduced the relative growth rate in comparison with that observed for the controls. No significant difference in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alecrim-da-chapada; Carvacrol; Salt stress; Thymol.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300006
Imagem não selecionada

Imprime registro no formato completo
Essential oil content and chemical composition of Lippia gracilis Schauer cultived in the Sub-meddle São Francisco Valley. Repositório Alice
SOUZA, A. V. de; SANTOS, U. S. dos; CORRÊA, R. M.; SOUZA, D. D. de; OLIVEIRA, F. J. V. de.
Lippia gracilis is a native species of the Caatinga, whose leaves have significant potential for economic use by chemical and pharmaceutical industries due to the presence of thymol and carvacrol. Considering the lack of agronomic data for the species, especially for semi-arid conditions where it is possible to find natural populations, the aim of this work was to assess the effects of drought and different doses of organic fertilization in biomass production and content, yield and chemical composition of the essential oil. The experiment was conducted with 16 treatments that consisted of presence and absence of organic fertilizer, mineral fertilizer and irrigation. The analyzed variables after 120 days of culture were: total length until the last leaf,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Lippia gracilis; Planta nativa; Thymol; Carvacrol; Composição química; Óleo essencial; Alecrim do mato; Planta medicinal; Bioma Caatinga; Verbenaceae; Essential oil; Medicinal plants.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077445
Imagem não selecionada

Imprime registro no formato completo
In vitro inhibition of the bovine viral diarrhoea virus by the essential oil of Ocimum basilicum (basil) and monoterpenes BJM
Kubiça,Thaís F.; Alves,Sydney H.; Weiblen,Rudi; Lovato,Luciane T..
The bovine viral diarrhoea virus (BVDV) is suggested as a model for antiviral studies of the hepatitis C virus (HCV). The antiviral activity of the essential oil of Ocimum basilicum and the monoterpenes camphor, thymol and 1,8-cineole against BVDV was investigated. The cytotoxicities of the compounds were measured by the MTT (3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyltetrazolium bromide) test, and the antiviral activities were tested by the plaque reduction assay. The oil or compounds were added to the assay in three different time points: a) pre-treatment of the virus (virucidal assay); b) pre-treatment of the cells; or c) post-treatment of the cells (after virus inoculation). The percentage of plaques inhibition for each compound was determined based on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antiviral; Camphor; 1.8-cineol; Thymol.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100028
Imagem não selecionada

Imprime registro no formato completo
Intestinal and liver morphometry of the Yellow Tail Tetra (Astyanax altiparanae) fed with oregano oil Anais da ABC (AABC)
FERREIRA,POLLYANNA M.F.; CALDAS,DÉBORA W.; SALARO,ANA LÚCIA; SARTORI,SIRLENE S.R.; OLIVEIRA,JERUSA M.; CARDOSO,ALEX J.S.; ZUANON,JENER A.S..
ABSTRACT This study aimed to evaluate the effect of oregano oil on the intestinal and liver morphometry of yellow tail tetra, Astyanax altiparanae. Fish (1.46 ± 0.09 g) were kept in a 60-L aquaria, at a stocking density of 0.5 fi sh L-1. Six diets containing varying amounts of oregano oil were evaluated (0.0; 0.5; 1.0; 1.5; 2.0 and 2.5 g of oregano oil kg-1). At the end of 90 days, the fi sh were euthanised. Four intestines and four livers were collected per treatment, which were fi xed in Bouin and embedded in resin. For height and width folds, the absorption surface area and thickness of the muscular layer a positive linear effect of oregano oil was observed. A decrescent linear effect on the total number of goblet cells was also observed. For the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carvacrol; Growth promoter; Intestinal histology; Liver histology; Origanum vulgare; Thymol.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300911
Imagem não selecionada

Imprime registro no formato completo
Leishmanicidal activity of carvacrol-rich essential oil from Lippia sidoides Cham Biol. Res.
Farias-Junior,Paulo A; Rios,Marcos C; Moura,Tauanny A; Almeida,Roque P; Alves,Pericles B; Blank,Arie F; Fernandes,Roberta P M; Scher,Ricardo.
Leishamaniasis is a disease that affects more than 2 million people worldwide, whose causative agent is Leishmania spp. The current therapy for leishmaniasis is far from satisfactory. All available drugs, including pentavalent antimony, require parenteral administration and are potentially toxic. Moreover, an increase in clinical resistance to these drugs has been reported. In this scenario, plant essential oils used traditionally in folk medicine are emerging as alternative sources for chemotherapeutic compounds. In this study, in vitro leishmanicidal effects of a thymol- and a carvacrol-rich essential oil from leaves of Lippia sidoides Cham. were investigated. The essential oils were extracted and their constituents were characterized by gas...
Tipo: Journal article Palavras-chave: Carvacrol; P-cymene; Essential oil composition; Leishmania chagasi; Lippia ssp.; Thymol; Verbenaceae.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000400012
Imagem não selecionada

Imprime registro no formato completo
Performance of broiler chickens supplemented with Mexican oregano oil (Lippia berlandieri Schauer) R. Bras. Zootec.
Vázquez,Ramón Silva; Meléndez,Lorenzo Antonio Durán; Estrada,Eduardo Santellano; Rodríguez Muela,Carlos; Villalobos,Guillermo Villalobos; Zamora,Gerardo Méndez; Hume,Michael E..
The objective of this research was to evaluate the inclusion of two qualities of Mexican oregano oil (MOO) in broiler diets on broiler weight, feed intake, feed efficiency, average daily gain, and water intake. The qualities were MOO1 (4% thymol, 60% carvacrol) and MOO2 (40% thymol, 20% carvacrol). Nine treatments were prepared by the combinations of MOO1 + MOO2 (0, 400, and 800 mg kg−1; added per kg of feed) respectively: 0+0, 0+400, 0+800, 400+0, 400+400, 400+800, 800+0, 800+400, and 800+800. Eighteen chicks per treatment were divided in a completely randomized design into nine cages. Broiler weights were altered by the treatments at 21 d, when 400+400 had the highest weight, and on day 39, when the greatest weight was seen in broilers on treatments...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carvacrol; Extract; Inclusion; Thymol; Water intake.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000800283
Imagem não selecionada

Imprime registro no formato completo
Seasonal yield and chemical composition of the essential oil from Lippia origanoides Kunth and its relationship with meteorological elements in the Cerrado, Federal District, Brazil. Repositório Alice
ALONSO, A. M.; OLIVEIRA, A. D. de; MALAQUIAS, J. V.; GOMES, I. da S.; SILVA, D. B. da; BIZZO, H. R.; VIEIRA, R. F..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Lippia origanoides; Essential oil; Thymol; Seasonality; Cerrado.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1039546
Imagem não selecionada

Imprime registro no formato completo
Seasonal yield and chemical composition of the essential oil from Lippia origanoides Kunth and its relationship with meteorological elements in the Cerrado, Federal District, Brazil. Repositório Alice
ALONSO, A. M.; OLIVEIRA, A. D. de; MALAQUIAS, J. V.; GOMES, I. da S.; SILVA, D. B. da; BIZZO, H. R.; VIEIRA, R. F..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Lippia origanoides; Essential oil; Thymol; Seasonality; Cerrado.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1029360
Imagem não selecionada

Imprime registro no formato completo
Sílica biogênica como veículo na liberação controlada de biocidas. Infoteca-e
MATTOS, B. D.; LOUREÇON, T. V.; MAGALHAES, W. L. E..
Biocidas são essenciais na proteção de colheitas, embalagens, além de um grande número de outras aplicações em biossistemas. Entretanto, propriedades como responsividade e controle da taxa de liberação tornaram-se primordiais no desenvolvimento de sistemas biocidas mais sustentáveis. Almeja-se com isto diminuir o acúmulo de toxinas em solo, água e alimentos. Neste estudo, explorou-se a arquitetura hierarquicamente nano-organizada (agregados fractais) de partículas de sílica biogênica como um veículo de alta capacidade de carregamento biocida, neste caso timol. Sendo a área de superfície de agregados fractais altamente acessível, foi possível desenvolver um método espontâneo, de baixa energia, para o carregamento de até 100 mg de biocida por grama de...
Tipo: Artigo de divulgação na mídia (INFOTECA-E) Palavras-chave: Liberação sob demanda; Agregados fractais; Interações de interface; Timol; Biopesticida; On-demand release; Fractal aggregates; Interface interactions; Biopesticides; Thymol.
Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1081395
Imagem não selecionada

Imprime registro no formato completo
The effects of different culture conditions on the production of volatiles from Lippia origanoides Kunth (Verbenaceae). Repositório Alice
CASTILHO, C. V. V.; SILVA, V. D.; MIRANDA, C. de O.; SANTOS, M. C. S.; BIZZO, H. R.; SILVA, N. C. B. da; LEITÃO, S. G..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Lippia origanoides; Volatiles; Micropropagation; Thymol; Carvacrol.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1029340
Imagem não selecionada

Imprime registro no formato completo
The influence of caffeine and thymol on the survival, growth and reproduction of Subulina octona (Brugüière, 1789) (Mollusca, Subulinidae) BABT
Ferreira,Paula; Soares,Geraldo Luiz Gonçalves; D'ávila,Sthefane; Bessa,Elisabeth Cristina de Almeida.
Subulina octona is a terrestrial snail which serves as an intermediate host for the parasites. It is also an agricultural pest. The aim of this work was to assess, during 120 days, the effects of caffeine and thymol at 2.5 g/L and 5 g/L on the hatchability, survival after hatching, growth and reproduction of S. octona under the laboratory conditions. A total of 240 eggs, 240 juveniles aged 10-day-old, and 240 aged 30-day-old were tested. The results showed that thymol (at 2.5 g/L and 5 g/L) and caffeine (at 5 g/L) acted as ovicides. In the 10-day-old juveniles, caffeine at 5 g/L caused 25% mortality and at 2.5 g/L it caused 30% mortality. Thymol at 2.5 and 5 g/L caused 20 and 22.5% mortality, respectively. In the 30-day-old juveniles, caffeine at 5 g/L...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caffeine; Thymol; Molluscicide; Subulina octona; Snail-terrestrial.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400018
Registros recuperados: 14
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional