title: Effect of kosmotropicity of ionic liquids on the enzyme stability in aqueous solutions.
abstract: This paper examined the effect of several pyridinium and imidazolium-based ionic liquids (ILs) on the protease stability in aqueous solutions. In general, the enzyme was found quite active at low concentrations of hydrophilic ILs. In aqueous environment, the enzyme was stabilized by the kosmotropic anions (such as CF3COO- and CH3COO-) and chaotropic cations (such as [BuPy]+ and [EMIM]+), but was destabilized by chaotropic anions (such as tosylate and BF4-) and kosmotropic cations (such as [BMIM]+).
authors.affiliation: Chemistry Program, Department of Natural Sciences and Mathematics, Savannah State University, Savannah, GA 31404, USA. zhaoh@savstate.edu
authors.forename: Hua
authors.initials: H
authors.lastname: Zhao
authors.forename: Olarongbe
authors.initials: O
authors.lastname: Olubajo
authors.forename: Zhiyan
authors.initials: Z
authors.lastname: Song
authors.forename: Artez L
authors.initials: AL
authors.lastname: Sims
authors.forename: Terra E
authors.initials: TE
authors.lastname: Person
authors.forename: Rasheed A
authors.initials: RA
authors.lastname: Lawal
authors.forename: Ladena A
authors.initials: LA
authors.lastname: Holley
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D001230:Aspergillus / Q000201:enzymology*; D004795:Enzyme Stability; D007093:Imidazoles / Q000737:chemistry*; D007477:Ions; D010447:Peptide Hydrolases / Q000737:chemistry / Q000378:metabolism*; D011725:Pyridines / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013997:Time Factors; D014269:Trifluoroacetic Acid / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D007477:Ions; D011725:Pyridines; D012996:Solutions; D014867:Water; D014269:Trifluoroacetic Acid; D010447:Peptide Hydrolases; D019342:Acetic Acid