Nanocapsule
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Optimized conditions to produce water-in-oil-in-water nanoemulsion and spray-dried nanocapsule of red ginseng extract
Abstract The aim of this study was to optimize conditions for producing water-in-oil-in-water (W/O/W) nanoemulsion and spray-dried nanocapsule of red ginseng extract. Based on emulsion stability and average particle size analysis, optimum conditions to produce W/O/W nanoemulsion were: ratio of core to coating material, 3:7; primary emulsifier, 10% polyglyce
Food Sci. Technol. Publicado em: 19/04/2018
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2. Production and characterization of nanocapsules encapsulated linalool by ionic gelation method using chitosan as wall material
Abstract Linalool has been extensively applied in various fields, such as flavoring agent, perfumes, cosmetics and medical science. However, linalool is unstable, volatile and readily oxidizable. A sensitive substance can be encapsulated in a capsule, so encapsulation technology can solve these problems. In this paper, linalool-loaded nanocapsules (Lin-nanoc
Food Sci. Technol. Publicado em: 25/05/2017
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3. Stability-indicating RP-HPLC method for determination of beclomethasone dipropionate in nanocapsule suspensions
resumo Um método simples de CLAE-FR/UV indicativo de estabilidade foi validado para a determinação do dipropionato de beclometasona (BD) em suspensões de nanocápsulas. As condições cromatográficas foram: coluna C18 fase reversa (250 mm x 4,60 mm, 5 µm, 110 Å), usando como fase móvel metanol e água (85:15 v/v) a 1,0 mL/min, com detecção UV a 254
Braz. J. Pharm. Sci.. Publicado em: 2015-12
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4. DEVELOPMENT OF ORAL NIFEDIPINE-LOADED POLYMERIC NANOCAPSULES: PHYSICOCHEMICAL CHARACTERISATION, PHOTOSTABILITY STUDIES,
IN VITRO ANDIN VIVO EVALUATIONIn this study, nifedipine (NFP)-loaded polymeric nanocapsules were prepared and characterised with a view to protect the drug from degradation. Nanocapsule suspensions were prepared using two different surfactants (pluronic F68 and polyvinyl alcohol). Physicochemical stability and
in vivo antihypertensive effect were evaluated. The particlQuím. Nova. Publicado em: 2015-07
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5. Desenvolvimento de um método para a determinação de tioconazol associado a nanocápsulas poliméricas por cromatografia líquida
The aim of this work was to develop and validate an analytical method for the quantification of tioconazole in polymeric nanocapsule suspensions by high performance liquid chromatography with UV detection. The analysis was performed with a mobile phase composed of methanol:water (80:20) and 0.18% ammonium hydroxide; RP-18 column and UV detection at 219 nm. T
Quím. Nova. Publicado em: 2014-07
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6. Synthesis, characterization and microwave absorption of carbon-coated Cu nanocapsules
The microstructure and microwave absorption of carbon-coated Cu nanocapsules have been investigated. Carbon-coated Cu nanocapsules have been synthesized by an arc-discharge method. The paraffin-Cu/C nanocapsules composite shows excellent electromagnetic (EM) absorption properties. An optimal reflection loss (RL) value of - 40.0 dB is reached at 10.52 GHz for
Mat. Res.. Publicado em: 24/01/2014
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7. Developments in the use of nanocapsules in oncology
The application of nanotechnology to medicine can provide important benefits, especially in oncology, a fact that has resulted in the emergence of a new field called Nanooncology. Nanoparticles can be engineered to incorporate a wide variety of chemotherapeutic or diagnostic agents. A nanocapsule is a vesicular system that exhibits a typical core-shell struc
Braz J Med Biol Res. Publicado em: 28/05/2013
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8. Desenvolvimento e caraterização de nanopartículas poliméricas contendo grandisina / Development and Characterization of Polymeric nanoparticles containing grandisin
A grandisina, uma neolignana tetraidrofurânica obtida das sementes e folhas da planta Virola surinamensis, é popularmente utilizada no tratamento de erisipelas, cólicas e dispepsias, e possui ação comprovada contra Schistosoma mansoni, Plasmodium falciparum, Leishmania donovani e Trypanosoma cruzi. Apresenta também atividade antinociceptiva, anti-infla
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/12/2011
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9. Development and validation of a fluorimetric method to determine curcumin in lipid and polymeric nanocapsule suspensions
Um método fluorimétrico simples, rápido e sensível foi desenvolvido e validado para quantificação da curcumina em suspensões de nanocápsulas lipídicas e poliméricas, usando acetonitrila como solvente. Os comprimentos de onda de excitação e emissão foram 397 nm e 508 nm, respectivamente. Nas condições testadas, a curva de calibração demonstro
Brazilian Journal of Pharmaceutical Sciences. Publicado em: 2010-06
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10. Development of nanocapsule suspensions and nanocapsule spray-dried powders containing melatonin
Suspensões de nanocápsulas contendo melatonina foram preparadas pelo método de deposição interfacial e caracterizadas (tamanho, morfologia e eficiência de encapsulação). Foram avaliadas as influências do tipo de polímero, de óleo e de tensoativo sobre as características dos produtos. A eficiência de encapsulação da melatonina variou de 30% a 5
Publicado em: 2010
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11. Surface morphology of spray-dried nanoparticle-coated microparticles designed as an oral drug delivery system
This paper was devoted to studying the influence of coating material (nanocapsules or nanospheres), drug model (diclofenac, acid or salt) and method of preparation on the morphological characteristics of nanoparticle-coated microparticles. The cores of microparticles were obtained by spray drying or evaporation and the coating was applied by spray drying. SE
Brazilian Journal of Chemical Engineering. Publicado em: 2008-06
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12. Micropartículas nanorrevestidas contendo um fármaco modelo hidrofóbico: preparação em etapa única e caracterização biofarmacêutica
The aim of this work was to prepare and characterize spray-dried nanocapsule-coated microparticles obtained in one step, using indomethacin as a hydrophobic drug model and poly(e-caprolactone) or Eudragit® RS100, as polymers. Nanocapsule-coated microparticles showed micrometric mean sizes (10 - 15 µm) and a reduced surface area (75 - 85 m²g-1) compared to
Química Nova. Publicado em: 2008