Detergents
Mostrando 25-36 de 618 artigos, teses e dissertações.
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25. Seed lipases: sources, applications and properties - a review
This paper provides an overview regarding the main aspects of seed lipases, such as the reactions catalyzed, physiological functions, specificities, sources and applications. Lipases are ubiquitous in nature and are produced by several plants, animals and microorganisms. These enzymes exhibit several very interesting features, such as low cost and easy purif
Brazilian Journal of Chemical Engineering. Publicado em: 2010-03
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26. Optimization of NMP extraction in 1, 3-butadiene production line
N-methylpyrrolidone is a powerful solvent for variety of chemical processes due to its vast chemical properties. It has been used in manufacturing processes of polymers, detergents, pharmaceuticals rubber and many more chemical substances. However, it creates large amount of residue in some of these processes which has to be dealt with. Many well known metho
Eclética Química. Publicado em: 2010
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27. UtilizaÃÃo de ondas sÃnicas e ultra-sÃnicas para obtenÃÃo de DNA em amostra de mÃsculo humano
DNA extraction for forensic issues can be divided into two stages, digestion or lysis of samples, releasing DNA molecules in solution, and purification, making the DNA accessible to other process steps. Methods of cell lysis in current use in forensic laboratories include temperature variations and use of chemicals like proteinase K, detergents and reducing
Publicado em: 2009
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28. The influence of ethoxylation degree in the behaviour of secondary alcohol ethoxylates / Influência do grau de etoxilação no comportamento de álcoois secunários etoxilados
The solubilization of non-ionic solutes via partitioning between water and the micellar pseudophase of non-ionic surfactants was evaluated for a series of secondary alcohol ethoxylates with hydrophile length varying from 7 to 40 ethylene oxide units. It was demonstrated that the micellar incorporation constant, Ks, is not dependent on the hydrophile length o
Publicado em: 2009
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29. Isolation and characterization of detergent-reinstant membranes from erythrocytes / Isolamento e caracterização de membranas eritrocitaria resistentes a detergentes
Detergentes constituem uma das ferramentas mais importantes no estudo de membranas biológicas. A eficiência de um detergente em solubilizar biomembranas e suas proteínas depende de suas propriedades físico-químicas e a solubilização parcial pode resultar em membranas resistentes a detergentes (DRMs). A resistência a detergentes dessas frações membr
Publicado em: 2009
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30. Interação entre um peptídeo antimicrobiano e vesículas de fosfolipídeos / Interaction between an antimicrobial peptide and phosfolipids membranes.
Neste trabalho, estudamos a interação de um peptídeo antimicrobiano com membranas modelo, por meio de dicroísmo circular (CD), fluorescência e microscopia óptica. Tal peptídeo, chamado de híbrido, foi sintetizado como uma mistura das regiões mais ativas de dois outros peptídeos antimicrobianos, chamados de pediocina A e plantaricina 149. Esse pept�
Publicado em: 2009
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31. DETERMINAÇÃO DE MARCADORES ORGÂNICOS NO PERFIL SEDIMENTAR DO COMPLEXO ESTUARINO DE PARANAGUÁ (PR) POR CG-EM
The input evaluation of the organic matter in aquatic environment by anthropic activity can be done by the identification and quantification of molecular markers. Many studies point the application of the molecular markers for this objective but few of them evaluate the variation of the compound concentration through a long period of time registered on the s
Publicado em: 2009
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32. Production, purification and partial characterization of invertase obtained from solid state cultivation of Aspergillus casiellus on soybean substrate / ProduÃÃo, purificaÃÃo e caracterizaÃÃo parcial da invertase obtida por fermentaÃÃo em estado sÃlido de soja com Aspergillus casiellus
The invertase, enzyme found in yeast, above all in the Sacharomyces cerevisiae species, invertebrate, vertebrate, green alga, bacteries, vegetal and fungus, is one of the principal accountable for sucrose hydrolysis to form the inverted syrup, is used by the food industry and pharmacy, in the hydrolyses of rafinose, inulin and gentianose. In the present work
Publicado em: 2009
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33. Solubilization of human erythrocyte membranes by ASB detergents
Understanding the membrane solubilization process and finding effective solubilizing agents are crucial challenges in biochemical research. Here we report results on the interaction of the novel linear alkylamido propyl dimethyl amino propanosulfonate detergents, ASB-14 and ASB-16, with human erythrocyte membranes. An estimation of the critical micelle conce
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-09
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34. DESESTABILIZAÇÃO DE EMULSÕES VISANDO A REDUÇÃO DO TEOR DE ÓLEO EM ÁGUA
One big problem in the mineral industry is concerned to the disposition of oil effluents, due to formation of emulsions, during the different steps of the ore processing. Various types of soaps and detergents are used in the process, making the emulsions very stable. Thus, it becomes necessary to treat these effluents before being discarded, in order to redu
Publicado em: 2008
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35. Determinação dos parametros de qualidade de detergentes em po utilizando espectroscopia no infravermelho proximo / Determination of the parameters of quality of powder detergents using near infrared spectroscopy
Este trabalho visa o desenvolvimento de um método analítico para a determinação dos parâmetros de qualidade em detergentes em pó utilizando a Espectroscopia de Infravermelho Próximo (NIR) e técnicas de calibração multivariada. Foram utilizados dois conjuntos de amostras: o primeiro para as análises quantitativas e o segundo para análises qualitat
Publicado em: 2007
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36. Desenvolvimento e avaliaÃÃo da tecnologia de produÃÃo de Ãsteres homogÃneos de sacarÃdeos por acetilaÃÃo catalÃtica
As part of the systematic study of the process of acetylation of saccharides aiming to obtain products of industrial interests, we did tests with monosaccharides (glucose and fructose), disaccharides (sucrose). The sucrose composing abundant raw material deserves special attention as reagent acetylation of departure for a homogeneous environment. In the pres
Publicado em: 2007