36 documents found, page 1 of 4
An eco-friendly approach for the recovery of astaxanthin and β-carotene from Ph...
Mussagy, Cassamo U. [UNESP]; Kurnia, Kiki A.; Dias, Ana C.R.V.; Raghavan, Vijaya; Santos-Ebinuma, Valeria C. [UNESP]; Pessoa Jr, AdalbertoMade available in DSpace on 2022-04-28T19:48:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01; There is a growing demand in the development of environmentally friendly technologies, based on the use of more biocompatible solvents for the recovery of natural bioactive compounds. In this work, the red yeast Phaffia rhodozyma biomass was used as a source of carotenoids to develop an integrative and ...
Comparison of two computational methods for solvent screening in countercurrent...
Vilas-Boas, Sérgio M.; Cordova, Isabella Weber; Kurnia, Kiki A.; Almeida, Heloísa H.S.; Gaschi, Priscilla S.; Coutinho, João A.P.; Pinho, SimãoCountercurrent and centrifugal partition chromatography are techniques applied in the separation and isolation of compounds from natural extracts. One of the key design parameters of these processes is the selection of the biphasic solvent system that provides for the adequate partitioning of the solutes. To address this challenging task, the fully predictive Conductor-like Screening Model for Real Solvents (CO...
Integrative platform for the selective recovery of intracellular carotenoids an...
Mussagy, Cassamo U. [UNESP]; Santos-Ebinuma, Valéria C. [UNESP]; Kurnia, Kiki A.; Dias, Ana C. R. V.; Carvalho, Pedro; Coutinho, Joaõ A. P.Made available in DSpace on 2021-06-25T10:18:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-07; Natural bioactive compounds have been attracting growing interest from the industries as a greeneralternative to synthetic raw materials/products. Rhodotorula glutinis yeast naturally synthesizes added value compounds such as lipids and carotenoids, commonly used for cosmetic, pharmaceutical, and food a...
Determination, characterization and modeling of aqueous biphasic systems compos...
Mussagy, Cassamo U. [UNESP]; Tabanez, Naiara L. [UNESP]; Farias, Fabiane O.; Kurnia, Kiki A.; Mafra, Marcos R.; Pereira, Jorge F.B. [UNESP]Made available in DSpace on 2020-12-12T01:24:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-09-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Ionic liquids (ILs)-based aqueous biphasic systems (ABS) are efficient platforms for the extraction and purification of biomolecules. To find more biocompatible ABS, propy...
Ion speciation: a key for the understanding of the solution properties of ionic...
Kurnia, Kiki A.; Fernandes, Ana M.; Pinho, Simão; Coutinho, João A.P.Recently, combinations of two (or more) ionic liquids, known as ionic liquid mixtures, have become popular and have a broad range of applications. However, the fundamental knowledge on the molecular interactions that exist in ionic liquid mixtures is far from being understood. In this work, the experimental measurement of the water activity coefficient and computational modelling using Conductor-like Screening ...
Temperature dependency of aqueous biphasic systems: an alternative approach for...
E Silva, Francisca A.; Pereira, Jorge F. B.; Kurnia, Kiki A.; Ventura, Sónia P. M.; Silva, Artur M. S.; Rogers, Robin D.; Coutinho, João A. P.Herein we propose an alternative way to distinguish ionic liquids from Coulombic-dominated salts, based not on their upper limit melting temperature (100 °C), but on the trend of their phase-forming abilities to create aqueous biphasic systems as a function of temperature, in which a wider plethora of interactions can be appraised.
Densities, viscosities and derived thermophysical properties of water-saturated...
Martins, Mónia A.R.; Neves, Catarina M.S.S.; Kurnia, Kiki A.; Carvalho, Pedro J.; Rocha, Marisa A.A.; Santos, Luís M.N.B.F.; Pinho, SimãoIn order to evaluate the impact of the alkyl side chain length and symmetry of the cation on the thermophysical properties of water-saturated ionic liquids (ILs), densities and viscosities as a function of temperature were measured at atmospheric pressure and in the (298.15 to 363.15) K temperature range, for systems containing two series of bis(trifluoromethylsulfonyl)imide-based compounds: the symmetric [C n ...
Densities, viscosities and derived thermophysical properties of water-saturated...
Martins, Mónica A.R.; Neves, Catarina M.S.S.; Kurnia, Kiki A.; Carvalho, Pedro J.; Rocha, Marisa A.A.; Santos, Luís M.N.B.F.; Pinho, Simão P.In order to evaluate the impact of the alkyl side chain length and symmetry of the cation on the thermophysical properties of water saturated ionic liquids (ILs), densities and viscosities as a function of temperature were measured at atmospheric pressure and in the (298.15 363.15) K temperature range, for systems containing two series of bis(trifluoromethylsulfonyl)imide based compounds: the symmetric [CnCnim]...
Densities, viscosities and derived thermophysical properties of water-saturated...
Martins, Monia A. R.; Neves, Catarina M. S. S.; Kurnia, Kiki A.; Carvalho, Pedro J.; Rocha, Marisa A. A.; Santos, Luis M. N. B. F.; Pinho, Simao P.In order to evaluate the impact of the alkyl side chain length and symmetry of the cation on the thermophysical properties of water-saturated ionic liquids (ILs), densities and viscosities as a function of temperature were measured at atmospheric pressure and in the (298.15-363.15) K temperature range, for systems containing two series of bis(trifluoromethylsulfonyl)imide-based compounds: the symmetric [C(n)C(n...
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...