Fatty Systems
Mostrando 13-24 de 219 artigos, teses e dissertações.
-
13. Omega-3 fatty acid supplementation in horses
Polyunsaturated omega-3 fatty acids (n-3 PUFA) are a family of essential fatty acids with many biological activities. These fatty acids are incorporated into cell membranes, changing their structural and functional characteristics. N-3 PUFA can act by modulating inflammatory responses at different levels. Omega-3 PUFA can be converted in the body to longer-c
R. Bras. Zootec.. Publicado em: 2014-12
-
14. Determination of liquid-liquid equilibrium data for biodiesel containing ternary systems using near infrared technique
This work is focused on the determination of liquid-liquid equilibrium data for systems containing methyl and ethyl fatty acid esters, water, glycerol and ethanol at temperatures of 303.15 K and 318.15 K using a near-infrared spectroscopy technique (NIR). The NIR method used in this investigation provided quite satisfactory results when compared to conventio
Braz. J. Chem. Eng.. Publicado em: 2013-03
-
15. Solid-liquid equilibrium of triolein with fatty alcohols
Triacylglycerols and fatty alcohols are used in the formulation of cosmetic, pharmaceutical and food products. Although information about the phase transitions of these compounds and their mixtures is frequently required for design and optimization of processes and product formulation involving these substances, these data are still scarce in the literature.
Braz. J. Chem. Eng.. Publicado em: 2013-03
-
16. Viscosidade de misturas envolvendo alcoóis de cadeia curta e composto graxos: obtenção de novos parâmetros para o modelo UNIFAC-VISCO / Viscosity of mixture involving short-chain alcohols and fatty compounds: obtainment of new parameters of UNIFAC-VISCO model
A obtenção de dados de viscosidade, é fundamental para o projeto de equipamentos, tubulações e otimização de processos, já que esta propriedade afeta tanto a perda de energia por atrito em fluidos, como os mecanismos de transferência de calor e de massa. O presente trabalho de Mestrado teve como objetivo medir experimentalmente dados de viscosidade
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/09/2012
-
17. Estudio del coeficiente de reparto de ácidos carboxílicos grasos en sistemas modificados heptano/agua
The use of fatty acids (FAs) as amphiphiles is very important because they have a behaving similar to surfactants. The formulation for the preferential partition of these species was studied by varying the amount of salt at constant acid concentration. As the salt concentration increases, a Winsor I→III→II transition is observed for all the systems studi
Química Nova. Publicado em: 2012
-
18. Lipidograma e glicemia de búfalos leiteiros criados no Estado de São Paulo: influência de fatores fisiológicos e valores de referência / Lipid and glucose profile of dairy buffaloes raised in São Paulo state: influence of physiological factors and reference values
The aim of this study was to analyze the influence of age, gender, pregnancy, puerperium, lactation and breeding systems in the constituents of lipid metabolism and glucose of buffaloes. The biochemical analysis was obtained by determining the levels of serum cholesterol, triglycerides, beta-hydroxybutyrate (ß-HBO), non-esterified fatty acids (NEFA) and pla
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
-
19. Caracterização do perfil de ácidos graxos em leite de cabra por diferentes métodos de extração de gordura ou por metilação direta / Characterization of fatty acids profile in goat milk using different fat extraction methods or by direct methylation
The objective of this research was to characterize the profile of fatty acids in goat milk by using four different methods of extraction of fat milk and a method of direct methylation for further analysis by gas chromatography. Samples were obtained from the storage tank of the caprine production systems of the Department of Animal Science at the Universidad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/07/2011
-
20. Modelagem computacional para predição de equilibrio líquido-líquido de sistemas graxos / Computational modeling to predict liquid-liquid equilibrium of fatty systems
Na indústria de óleos, a remoção dos ácidos graxos livres é a etapa mais importante do processo de purificação. Geralmente, é realizada pelo refino químico ou físico. Em alguns casos, no entanto, o refino convencional provoca resultados indesejáveis. A desacidificação por extração líquido-líquido tem se mostrado uma alternativa viável tecn
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
-
21. Estudo do equilibrio solido-liquido em sistemas binarios de alcoois graxos atraves da calorimetria exploratoria diferencial / Solid-liquid equilibrium for fatty alcohols binary system by differential scanning calorimetry
Fatty alcohols are minor constituents of vegetal tissues, being mainly found in vegetal waxes. Fatty alcohols are used in industry as emulsifiers, surfactants or emollients agents. There are many studies about the use of fatty alcohol associated with fatty acids as substitutes for the hydrogenation process of margarine manufacturing and other edible emulsion
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2010
-
22. Systematic methodology and property prediction of fatty systems for process design/analysis in the oil and fat industry
A systematic model based methodology has been developed and its application highlighted through the solvent recovery section of a soybean oil extraction process, with emphasis on the effect of design variables on the process performance. First, the most representative compounds present in the vegetable oil were defined. Basic and critical properties were the
Brazilian Journal of Chemical Engineering. Publicado em: 2010-09
-
23. Lipídios como indicadores de fontes e distribuição de matéria orgânica particulada em um complexo estuarino-lagunar tropical (Mundaú-Manguaba, AL)
Fatty acids, alcohols and sterols were considered as markers of the source and distribution of particulate organic matter during the dry season in the Mundaú-Manguaba estuarine-lagoon system, NE Brazil. Lipid composition showed an overwhelming influence of autochthonous sources of organic matter in all system´s compartments, including the probable occurren
Química Nova. Publicado em: 2010
-
24. Determinação experimental de dados de pressão de vapor e de equilíbrio líquido-vapor de componentes do biodiesel através da calorimetria exploratória diferencial / Experimental determination of vapor pressure and vapor-liquid equilibrium data of components of biodiesel by differential
Biodiesel is a biodegradable, renewable fuel with lower greenhouse gas emissions. It consists of the alkyl esters of fatty acids, obtained by the transesterification of fats and oils with a short chain alcohol such as methanol or ethanol. Ethyl esters resulting from transesterification with ethanol are poorly characterized. The thermophysical properties and
Publicado em: 2010