Emulsification
Mostrando 1-12 de 130 artigos, teses e dissertações.
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1. Development of a Methodology Based on Extraction Induced by Emulsion Breaking for Copper Determination in Gasohol by Graphite Furnace Atomic Absorption Spectrometry
The development of a method based on extraction induced by emulsion breaking (EIEB) aiming copper determination in gasohol using graphite furnace atomic absorption spectrometry (GF AAS) is reported. Emulsification of the gasohol samples was carried out using nitric acid solution, (1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol surfactant (Triton X-114),
J. Braz. Chem. Soc.. Publicado em: 2021-02
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2. Tadalafil-loaded PLGA microspheres for pulmonary administration: preparation and evaluation
Tadalafil, a long-acting PED-5 inhibitor, is commonly used for the treatment of pulmonary arterial hypertension (PAH). However, its efficacy and clinical application are severely limited by the poor water solubility, low bioavailability and a series adverse effects (e.g. headaches, indigestion). In this study, tadalafil was prepared and loaded into biodegrad
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
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3. Nanoemulsion containing caffeine for cellulite treatment: characterization and in vitro evaluation
The Ginoide Hydrolipodystrophy (GHLD), commonly known as cellulite, occurs in 80-90% of the female population after the puberty period and comes from a metabolic modification in the cutaneous adipose tissue. Caffeine has been used in topical formulations due to its lipolytic action. We studied a nanoemulsion (F3) containing caffeine with two surfactants (ole
Braz. J. Pharm. Sci.. Publicado em: 24/10/2019
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4. Colombian propolis as starting material for the preparation of nanostructured lipid carriers
ABSTRACT The value of propolis is scientifically and commercially measured through the content of biologically active molecules as phenolic compounds and flavonoids; on the other hand, a high percentage of waxes in the propolis composition makes it a substandard beekeeping product. Colombian propolis is characterized by a high content of waxes; however, this
Rev. bras. farmacogn.. Publicado em: 26/08/2019
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5. Isolation and characterization of hydrocarbon-degrading bacteria from gas station leaking-contaminated groundwater in the Southern Amazon, Brazil
Resumo Vinte e três linhagens bacterianas degradadoras de hidrocarbonetos foram isoladas de água subterrânea contaminada por vazamento em posto de combustível no sul da Amazônia, Brasil. Com base na habilidade de degradar hidrocarbonetos (diesel, hexadecano, benzeno, tolueno e xileno), duas linhagens foram selecionadas para estudos posteriores. A amplif
Braz. J. Biol.. Publicado em: 05/08/2019
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6. Hyaluronic acid-coated nanoemulsions loaded with a hydrophobic ion pair of all-trans retinoic acid for improving the anticancer activity
All-trans retinoic acid (ATRA) has been studied for the treatment of cancer, including leukemia and breast cancer. This work aims to develop nanoemulsions (NE) loaded with a hydrophobic ion pair (HIP) of all-trans retinoic acid (ATRA) and a lipophilic amine, stearylamine (SA), and coated with hyaluronic acid (HA) to enhance anticancer activity and reducing t
Braz. J. Pharm. Sci.. Publicado em: 08/04/2019
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7. Evaluation of surfactant activity and emulsifying of Pea protein isolate (Pisum sativum L.) obtained by the spray dryer
ABSTRACT This study evaluates the biosurfactant activity and emulsification ability of pea proteins isolated (Pisum sativum L.). The results showed that aqueous solutions containing the pea proteins isolated (PPI) reduce the water surface tension to 47mN/m, approximately. The use of spray dryer does not change the surfactant activity of the PPI because surfa
Matéria (Rio J.). Publicado em: 06/12/2018
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8. Production and characterization of a biosurfactant produced by Streptomyces sp. DPUA 1559 isolated from lichens of the Amazon region
Surfactants are amphipathic compounds containing both hydrophilic and hydrophobic groups, capable to lower the surface or interfacial tension. Considering the advantages of the use of biosurfactants produced by microorganisms, the aim of this paper was to develop and characterize a biosurfactant produced by Streptomyces sp. DPUA1559 isolated from lichens of
Braz J Med Biol Res. Publicado em: 11/12/2017
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9. Development of Manual Shaking and Ultrasound-Assisted Surfactant-Enhanced Emulsification Microextraction for Analysis of Organophosphorus Pesticides in Aqueous Samples
A novel, rapid and efficient manual shaking and ultrasound-assisted surfactant-enhanced emulsification microextraction (M-UASEME) combined with gas chromatography-flame photometric detection (GC-FPD) was developed for the extraction and determination of eight organophosphorus pesticides (OPPs) in tap water and honey samples. The main parameters that affected
J. Braz. Chem. Soc.. Publicado em: 2017-12
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10. A research on determination of quality characteristics of chicken burgers produced with transglutaminase supplementation
Abstract Transglutaminases are enzymes that catalyze the cross-linking between peptides or proteins. They play an important role in heat stability, gel-formation capability, water-holding capacity, emulsification and nutritional properties of proteins. They are preferred in the use of a variety of meat products due to the binding properties. In this study th
Food Sci. Technol. Publicado em: 26/10/2017
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11. Absorption mechanism of three curcumin constituents through in situ intestinal perfusion method
This study aimed to investigate the absorption mechanism of three curcumin constituents in rat small intestines. Self-emulsification was used to solubilize the three curcumin constituents, and the rat in situ intestinal perfusion method was used to study factors on drug absorption, including drug mass concentration, absorption site, and the different types a
Braz J Med Biol Res. Publicado em: 21/09/2017
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12. Preliminary Evaluation of Novel Triglyceride-Based Nanocomposites for Biomedical Applications
This work describes the development and characterization of triglyceride-based magnetic nanocomposites for application in magnetic hyperthermia and controlled drug delivery. The magnetic solid lipid nanocomposites (MSLN) constituted by mixtures of trilaurin-tricaprylin and trilaurin-tricaprin have been successfully obtained by emulsification-solvent evaporat
J. Braz. Chem. Soc.. Publicado em: 2017-08