Menthol
Mostrando 13-24 de 54 artigos, teses e dissertações.
-
13. Menthol-loaded PLGA Micro and Nanospheres: Synthesis, Characterization and Degradation in Artificial Saliva
Menthol-loaded PLGA micro/nanospheres were synthesized using the multiple emulsion/solvent evaporation technique. Parameters such as stirring rate, external surfactant content, PLGA/menthol weight ratio, solvent evaporation and lyophilization time were evaluated as well as the degradation of micro/nanospheres in an artificial saliva medium. The menthol/PLGA
Mat. Res.. Publicado em: 15/02/2018
-
14. The Influence of Organic Medium and Supports in the Resolution of (R,S)-Menthol Catalyzed by Lipases
In this study, various commercial and native lipases, free or immobilized, were used in the enantioselective resolution of (R,S)-menthol with vinyl acetate for the preparation of menthyl acetate. Lipase from Candida rugosa (AYL) was found to be the most appropriate. When the reaction was carried out at 35 ºC, using 40 mg of AYL and a molar ratio of 1:2 (alc
J. Braz. Chem. Soc.. Publicado em: 2016-12
-
15. Characterization of the Volatile Profile of Brazilian Moscatel Sparkling Wines Through Solid Phase Microextraction and Gas Chromatography
Solid phase microextraction, one-dimensional gas chromatography (1D-GC) and comprehensive two-dimensional gas chromatography (GC×GC) with mass spectrometric detector have been used to characterize the volatile profile of Moscatel sparkling wines. Predominant classes were esters, acids, alcohols and terpenes. The efficiency of GC×GC was apparent due to t
J. Braz. Chem. Soc.. Publicado em: 2015-07
-
16. Evaluation of antifungal activity of essential oils against potentially mycotoxigenic Aspergillus flavus and Aspergillus parasiticus
The antifungal activity of essential oils of fennel (Foeniculum vulgare Mill., Apiaceae), ginger (Zingiber officinale Roscoe, Zingiberaceae), mint (Mentha piperita L., Lamiaceae) and thyme (Thymus vulgaris L., Lamiaceae) was evaluated against mycotoxin producers Aspergillus flavus and A. parasiticus. High Resolution Gas Chromatography was applied to analyze
Rev. bras. farmacogn.. Publicado em: 17/04/2012
-
17. Síntese e caracterização de copolímeros de cadeia lateral derivados de acrilatos de 4,5-di-hidroisoxazol e do (-)-mentol
Five monomers 5-[4-(5-cyano-4,5-dihydroisoxazol-3-yl)phenoxy]undecyl acrylate (7a); n-alkyl 3-{4-[5-(acryloyloxyundecyl)oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylate (7b,c for n-butyl and n-hexyl, respectively); 3-{4-[5-(acryloyloxyundecyl) oxyphenyl]}-4,5-dihydroisoxazole-5-carboxylic acid (7d) and (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl acrylate (9) and
Quím. Nova. Publicado em: 2012
-
18. Síntese e caracterização de novos polímeros líquido-cristalinos de cadeia lateral derivados do heterociclo 2-isoxazolínico 3,5-dissubstituído
This thesis presents the synthesis and characterization of new polymer liquid crystal materials based on heterocycle 2-isoxazoline 3,5-disubstituted. We studied the inversion effects of groups linked in position 3 and 5 in 2-isoxazoline in the mesogenic group attached by side chain polymer liquid crystal and the influence in liquid crystals properties. The m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
19. Adubação orgânica níveis de sombreamento e tipos de malhas sobre o crescimento e a produção de óleo essencial de hortelã-pimenta / Organic fertilization, shading levels and types of meshes on growth and essential oil of peppermint
Luz e adubação são componentes vitais para o crescimento e desenvolvimento das plantas. Tanto a qualidade como a quantidade da radiação incidente e a adubação orgânica podem afetar o crescimento vegetativo e a biossíntese e acúmulo de metabólitos secundários em plantas medicinais e aromáticas. Objetivou-se neste trabalho avaliar o crescimento ve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2011
-
20. Anesthetic effects on tadpoles and post-metamorphic frogs of bullfrog (Lithobates catesbeianus) / Efeito de anestésicos em girinos e rãs pós-metamórficas de rã-touro (Lithobates catesbeianus)
Com o intuito de avaliar o uso de três anestésicos locais, entres eles, o eugenol, o mentol e a benzocaína, como indutores à sedação e à insensibilização de girinos e rãs pós-metamórficas da espécie Lithobates catesbeianus, em diferentes estágios de desenvolvimento, realizou-se este experimento no Laboratório do Ranário Experimental da Univer
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/04/2011
-
21. Cardiovascular effects of monoterpenes: a review
The monoterpenes are secondary metabolites of plants. They have various pharmacological properties including antifungal, antibacterial, antioxidant, anticancer, anti-spasmodic, hypotensive, and vasorelaxant. The purpose of this research was to review the cardiovascular effects of monoterpenes. The data in this resarch were collected using the Internet portal
Revista Brasileira de Farmacognosia. Publicado em: 08/07/2011
-
22. Morphological variations caused by fixation techniques may lead to taxonomic confusion in Laeonereis (Polychaeta: Nereididae)
The nereidid polychaete Laeonereis acuta (Treadwell, 1923) is either considered to be a valid species, or a synonym of Laeonereis culveri (Webster, 1879). The species epithet, acuta, refers to the acuminate anterior region of the body followed by a widening that is visible up to the 10th setiger. The relative width of the anterior region of the body, however
Zoologia (Curitiba). Publicado em: 2010-02
-
23. Synthesis of liquid menthol by hydrogenation of dementholized peppermint oil over Ni catalysts
Hydrogenation of (-)-menthone and (+)-isomenthone was studied at 2.7 MPa and 100 ºC. The objective was to produce a liquid menthol mixture rich in (-)-menthol from dementholized peppermint oil. Ni-based catalysts were tested and compared for this reaction: a) 6 and 12% Ni dispersed into a nonstoichiometric magnesium aluminate (Ni-Mg-Al) with spinel structur
Química Nova. Publicado em: 2010
-
24. AvaliaÃÃo dos efeitos farmacolÃgicos de (-)- mentol em modelos comportamentais e de gastroproteÃÃo em camundongos / Assessment of the effects of (-)-menthol on behavioral and gastroprotective models in mice.
O mentol, constituinte majoritÃrio da hortelÃ-pimenta, foi avaliado em modelos animais para investigar sua atividade no sistema nervoso central atravÃs de modelos experimentais animais para depressÃo, ansiedade, sedaÃÃo e convulsÃo, tais como, nado forÃado (NF), suspensÃo da cauda (SC), campo aberto, labirinto em cruz elevado (LCE), rota rod, tempo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2009