Aqueous biphasic systems composed of a water-stable ionic liquid plus carbohydrates and their applications
authors Freire, MG; Louros, CLS; Rebelo, LPN; Coutinho, JAP
nationality International
journal GREEN CHEMISTRY
keywords 2-PHASE SYSTEMS; MUTUAL SOLUBILITIES; PHASE-BEHAVIOR; EXTRACTION; TRYPTOPHAN; HYDRATION; PROTEINS; SALT; MONOSACCHARIDES; PRECIPITATION
abstract A water-stable ionic liquid, 1-butyl-3-methylimidazolium trifluoromethanesulfonate, [C(4)mim][CF(3)SO(3)], is herein proposed to be used in the formation of aqueous biphasic systems (ABS) with a large range of mono-and disaccharides, as well as polyols. Binodal curves, tie-lines, and densities and viscosities of the co-existing aqueous phases, were determined for each ternary system. The proposed systems are low-viscous offering enhanced features over conventional polymer-based ABS. In addition, the partitioning of model biomolecules, such as L-tryptophan, caffeine, and beta-carotene, was further investigated to ascertain the applicability of such ABS. These systems are particularly interesting in the recovery of bioactive products from natural sources, while the availability of carbon-based sources to cells constitutes a major advantage in separations from fermentative media. Moreover, the use of carbohydrates in ionic-liquid-based ABS constitutes a step forward along the biorefinery concept envisaging sustainable conversions of biomass into a broad spectrum of bio-based products.
publisher ROYAL SOC CHEMISTRY
issn 1463-9262
year published 2011
volume 13
issue 6
beginning page 1536
ending page 1545
digital object identifier (doi) 10.1039/c1gc15110j
web of science category Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
subject category Chemistry; Science & Technology - Other Topics
unique article identifier WOS:000291351500025
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