Microemulsion System
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. MICROEMULSION OF BRAZIL NUT OIL AS A NATURAL PRODUCT TO IMPROVE SUPEROXIDE RELEASE IN HUMAN PHAGOCYTES
The aim of this study was to develop and characterize a Brazil nut oil microemulsion system and determine the effect of this microemulsion on the superoxide release in human phagocytes. The microemulsion was formulated using distilled water, Brazil nut as the oily phase, Sorbitan monooleate, Polysorbate 80, and butan-1-ol. Hydrophile-lipophile balance of Bra
Quím. Nova. Publicado em: 2017-09
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2. CHROMIUM EXTRACTION BY MICROEMULSIONS IN TWO- AND THREE-PHASE SYSTEMS
Abstract Microemulsion systems were used to remove chromium from an aqueous solution obtained from acid digestion of tannery sludge. The systems were composed by: coconut oil soap as surfactant, 1-butanol as cosurfactant, kerosene as the oil phase, and chromium solution as the aqueous phase. Two- and three-phase microemulsion extraction methods were investig
Braz. J. Chem. Eng.. Publicado em: 2015-12
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3. SYNTHESIS AND CHARACTERIZATION O F SODIUM METHYL ESTER SULFONATE FOR CHEMICALLY-ENHANCED OIL RECOVERY
Abstract Attention has been given to reduce the cost of surfactant by using castor oil as an alternative natural source of feedstock. A new surfactant, sodium methyl ester sulfonate (SMES) was synthesised using ricinoleic acid methyl ester, which is obtained from castor oil, for enhanced oil recovery in petroleum industries. The performance of SMES was studi
Braz. J. Chem. Eng.. Publicado em: 2015-09
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4. Production of biodiesel catalyzed by Candida rugosa lipase at interface of w/o microemulsion system
A síntese de biodiesel foi realizada entre o ácido palmítico e o metanol em microemulsão reversa (w/o) preparada a partir da mistura de ácido dodecilbenzenossulfônico (DBSA)/isooctano/água. O planejamento Box-Behnken foi adotado para avaliar o efeito de importantes fatores que afetam o rendimento de palmitato de metila e a metodologia de superfície d
J. Braz. Chem. Soc.. Publicado em: 2014-09
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5. Avaliação do potencial anticorrosivo de tiossemicarbazonas solubilizadas em microemulsão
In this paper, thiosemicarbazones 4-N-cinnamoyl-thiosemicarbazone (CTSC), 4-N-(2'-methoxycinnamoyl)-thiosemicarbazone (MCTSC), and 4-N-(4'-hydroxy-3'-methoxybenzoyl)- thiosemicarbazone (HMBTSC) were solubilized in an oil-in-water (O/W) microemulsion system (ME_OCS), forming systems CTSC_ME_OCS, MCTSC_ME_OCS and HMBTSC_ME_OCS. The effectiveness of these syste
Quím. Nova. Publicado em: 2013
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6. Desenvolvimento e caracterização de microemulsão à base de óleo de sucupira (P. emarginatus Vog. Fabaceae) e avaliação da atividade antiinflamatória tópica / Development and characterization of oil sucupira microemulsion (P. emarginatus Vog. Fabaceae) and evaluation of topical anti-inflammatory activity
Pterodon emarginatus, popularly known as Sucupira Branca is a native species found in the Brazilian Savannahs in states of Goiás, Minas Gerais, São Paulo, Mato Grosso do Sul. Several studies have confirmed their therapeutic activities as antiinflammatory, antinociceptive, analgesic, antimicrobial, among others. The aim of this study was to develop a microe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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7. Remediation of soils contaminated by diesel fuel using a system of washing with microemulsion / Remediação de solos contaminados com óleo diesel utilizando um sistema de lavagem com microemulsão
The underground reservoirs of fuel retailing system represent an environmental threat, because once in bad conservation, these tanks allow fuel leakage and infiltration. For soil contaminated with fuel, such as diesel oil, the present study introduces the microemulsion systems used by the method of washing. In tests carried out in column with a sample of san
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
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8. Sistemas microemulsionados como carreador lipídico para fármacos insolúveis
Inúmeros produtos farmacêuticos vêm sendo desenvolvidos nos últimos anos com a finalidade de incrementar o tratamento de doenças pelo aumento da eficácia de fármacos. Grande parte destes novos produtos está baseada nos novos sistemas transportadores de fármacos. Entre eles destacamse as microemulsões, que foram primeiramente estudadas em 1943 por H
Publicado em: 2010
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9. Photochemoprotective effect of quercetin incorporated in microemulsion against skin damages induced by ultraviolet irradiation / Efeito fotoquimioprotetor de quercetina incorporada em microemulsão contra os danos na pele causados pela radiação ultravioleta
The ultraviolet radiation (UVR) exposition may lead to the skin oxidant/antioxidant imbalance injuring its integrity and leading to several disorders, such as ageing and skin cancer. Considering the close relationship between the increase in oxidative stress and UV-induced skin damages, together with the fact that epidemiological studies indicate that the us
Publicado em: 2009
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10. Aplicação de microemulsões na solubilização de frações pesadas de petróleo
This work presents studies related to the use of microemulsions in the solubilization of heavy crude oil fractions responsible by the formation of deposits. The first stage of the work was addressed to the construction of phases diagrams, with the intention of determining the area within which the microemulsion is formed. The following systems were studied:
Publicado em: 2009
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11. Estudo de liberação e permeação in vitro do diclofenaco de dietilamônio em microemulsão gel-like
The goal of this study was to produce and characterize a new microemulsion gel-like carrier system (MEG) by using the pseudo-ternary phase-diagram concept. The diclofenac diethylamine (DDA) was incorporated in the MEG and its in vitro release and permeation profiles were performed using Franz-type diffusion cells. The results revealed that the commercial DDA
Química Nova. Publicado em: 2009
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12. Estudo etnofarmacológico e fitoquímico das espécies medicinais Cleome spinosa Jacq, Pavonia varians Moric e Croton cajucara Benth
In this present work an ethnographic research was performed with 84 native medicinal specimens from the Litoral Norte Riograndense, from which two plants Cleome spinosa Jacq e Pavonia varians Moric were submitted to ethnobotanic, phytochemistry and pharmacologic investigations. Additionally, a phytopharmacological research of the medicinal specimen Croton ca
Publicado em: 2009