期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 208, 期 -, 页码 130-136出版社
ELSEVIER
DOI: 10.1016/j.molliq.2015.04.007
关键词
Amino acids; Ionic liquids; Solubility; Transfer free energies; Biocompatibility
资金
- University Grants Commission (UGC), New Delhi
- Council of Scientific Industrial Research (CSIR), New Delhi [01(2343)/09/EMR-II]
The interactions between ionic liquids (ILs) and amino acids (MO can easily be quantified using the apparent transfer free energy(Delta G(tr)') values that can be used to interpret the stability of the proteins in the same solvent medium. In this study, Delta G(tr)'. values of AA, such as phenylalanine (Phe), histidine (His), threonine (Thr), glutamine (Gin) and serine (Ser) from the water to ILs have been obtained from the solubility measurements, as a function of IL concentration at 298.15 K under atmospheric pressure. The investigated ILs contain diethylammonium acetate (DEAA), diethylammonium hydrogen sulfate (DEAS), triethylammonium acetate (TEAA), triethylammonium hydrogen sulfate (TEAS), triethylammonium dihydrogen phosphate (TEAP), and trimethylammonium acetate (TMAA). The results reveal that the IL effect was specific and independent for each AA in the aqueous medium. Apparently, we observed a positive as well as negative Delta G(tr)' values for Phe, His, Glu, Thr, and Set AA(s) in the ammonium-based Its. (C) 2015 Elsevier B.V. All rights reserved.
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