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| Registros recuperados: 10 | |
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| 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 |
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| 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 |
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| 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 |
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| ALONSO, A. M.; OLIVEIRA, A. D. de; MALAQUIAS, J. V.; SILVA, D. B. da; VIEIRA, R. F.; BIZZO, H. R.. |
| Resumo ? O objetivo foi avaliar a influência de elementos meteorológicos no rendimento e na composição química do óleo essencial de Lippia origanoides cultivada em diferentes épocas no Cerrado no Distrito Federal. O experimento foi conduzido em vasos, a céu aberto e irrigado. As épocas de corte foram: outono/maio/2013, inverno/agosto/2013 e verão/fevereiro/2014, correspondendo a três tratamentos. Os valores dos elementos meteorológicos foram registrados às 10 horas na data do corte. O óleo essencial (OE) foi extraído por hidrodestilação em aparelho Clevenger, e a identificação dos seus constituintes químicos ocorreu por Cromatografia Gasosa (CG-DIC e CG-EM). O delineamento experimental foi inteiramente casualizado com 3 tratamentos x 5 repetições. O... |
| Tipo: Folhetos |
Palavras-chave: Alecrim pimenta; Timol; Planta Medicinal; Radiação Solar; Variação Sazonal; Thymol; Medicinal plants; Solar radiation. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1139820 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 10 | |
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