156 documents found, page 1 of 16
Economic analysis of the production and recovery of green fluorescent protein u...
Torres-Acosta, Mario A.; Santos, Nathalia dos [UNESP]; Ventura, Sonia P. M.; Coutinho, Joao A. P.; Rito-Palomares, Marco; Pereira, Jorge F. B. [UNESP]Made available in DSpace on 2021-06-25T11:23:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); FCT (Portuguese Foundation for Science and Technology, Portugal); Portuguese Foundation for Science and Technology/MCTES; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Green fluorescent protein (GFP) is a useful biomol...
Economic evaluation of the primary recovery of tetracycline with traditional an...
Torres-Acosta, Mario A.; Pereira, Jorge F. B. [UNESP]; Freire, Mara G.; Aguilar-Yanez, Jose M.; Coutinho, Joao A. P.; Titchener-Hooker, Nigel J.Made available in DSpace on 2018-11-26T16:03:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-09-12; CONACYT; CICECO-Aveiro Institute of Materials - national funds through the FCT/MEC; FEDER under the PT2020 Partnership Agreement; European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Antibioti...
Surface tensions of ionic liquids: Non-regular trend along the number of cyano ...
Almeida, Hugo F. D.; Carvalho, Pedro J.; Kurnia, Kiki A.; Lopes-da-Silva, Jose A.; Coutinho, Joao A. P.; Freire, Mara G.Ionic liquids (ILs) with cyano-functionalized anions are a set of fluids that are still poorly characterized despite their remarkably low viscosities and potential applications. Aiming at providing a comprehensive study on the influence of the number of -CN groups through the surface tension and surface organization of ILs, the surface tensions of imidazolium-based ILs with cyano-functionalized anions were dete...
The effect of n vs. iso isomerization on the thermophysical properties of aroma...
Rodrigues, Ana S. M. C.; Almeida, Hugo F. D.; Freire, Mara G.; Lopes-da-Silva, Jose A.; Coutinho, Joao A. P.; Santos, Luis M. N. B. F.This work explores the n vs. iso isomerization effects on the physicochemical properties of different families of ionic liquids (ILs) with variable aromaticity and ring size. This study comprises the experimental measurements, in a wide temperature range, of the ILs' thermal behaviour, heat capacities, densities, refractive indices, surface tensions, and viscosities. The results here reported show that the pres...
Modeling of the binodal curve of ionic liquid/salt aqueous systems
Alvarez-Guerra, Enrique; Ventura, Sonia P. M.; Alvarez-Guerra, Manuel; Coutinho, Joao A. P.; Irabien, AngelIonic Liquid-based Aqueous Two Phase Systems (ILATPS) are an innovative technique to separate biomolecules that combines the advantages of liquid liquid extraction and hydrophilic ionic liquids. Most ILATPS are based on ionic liquids and conventional inorganic salts, and the phase envelope, described by the binodal curve, is usually modeled by empirical equations that are used to determine the phase composition...
Aqueous solubilities of five N-(diethylaminothiocarbonyl)benzimido derivatives ...
Schroeder, Bernd; Martins, Mania A. R.; Coutinho, Joao A. P.; Pinho, Simao P.N-(diethylaminothiocarbonyl)benzimido derivatives are polar multifunctional substances. A set of these compounds was synthesised by successive substitution on the enamine side, resulting in similar substances with different polarities, providing a set of model compounds with respect to the study of substituent effects on physico-chemical properties. Experimental aqueous solubility data, at T=298.15 K, of N-(die...
Single-step purification of ovalbumin from egg white using aqueous biphasic sys...
Pereira, Matheus M.; Cruz, Rafaela A. P.; Almeida, Mafalda R.; Lima, Alvaro S.; Coutinho, Joao A. P.; Freire, Mara G.The ability of aqueous biphasic systems (ABS) composed of polyethylene glycols of different molecular weights (PEG 400, 600 and 1000) and buffered aqueous solutions of potassium citrate/citric acid (pH 5.0-8.0) to selectively extract ovalbumin from egg white was here investigated. Phase diagrams, tie lines and tie-line lengths were determined at 25 degrees C and the partitioning of ovalbumin in these systems wa...
Why are some cyano-based ionic liquids better glucose solvents than water?
Batista, Marta L. S.; Passos, Helena; Henriques, Bruno J. M.; Maginn, Edward J.; Pinho, Simao P.; Freire, Mara G.; Gomes, Jose R. B.Among different classes of ionic liquids (ILs), those with cyano-based anions have been of special interest due to their low viscosity and enhanced solvation ability for a large variety of compounds. Experimental results from this work reveal that the solubility of glucose in some of these ionic liquids may be higher than in water a well-known solvent with enhanced capacity to dissolve mono-and disaccharides. T...
Structural insights into the effect of cholinium-based ionic liquids on the cri...
Khan, Imran; Umapathi, Reddicherla; Neves, Marcia C.; Coutinho, Joao A. P.; Venkatesu, PannuruSymmetrical poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEG-PPG-PEG) triblock copolymer with 82.5% PEG as the hydrophilic end blocks, and PPG as the hydrophobic middle block, was chosen to study the effect of ionic liquids (ILs) on the critical micellization temperature (CMT) of block copolymers in aqueous solution. In the present work, cholinium-based ILs were chosen to expl...
Alkaloids as Alternative Probes To Characterize the Relative Hydrophobicity of ...
Pereira, Jorge F. B.; Magri, Agnes; Quental, Maria V.; Gonzalez-Miquel, Maria; Freire, Mara G.; Coutinho, Joao A. P.In order to overcome the lack of characterization on the relative hydrophobicity of aqueous biphasic systems (ABS), the partition of three alkaloids as alternative probes was evaluated in a series of biocompatible ABS composed of cholinium-based salts or ionic liquids (ILs) and polyethylene glycol (PEG). The caffeine partitioning in ABS was first addressed to infer the effect of the phase-forming components com...