Extraction of Candida antarctica lipase A from aqueous solutions using imidazolium-based ionic liquids

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The suitability of two different imidazolium-based families of ionic liquids (ILs) involving alkylsulfate and alkylsulfonate anions to act as solvents in an aqueous biphasic system for the extraction of lipase A from Candida antarctica has been investigated. Both high charge-density salts and aminoacids have been studied in order to evaluate both their potential as two-phase forming agents and as stabilizers of the active conformation of the enzyme. Extraction with 1-ethyl-3-methylimidazolium butyl sulfate [C2MIM][C4SO4] with ammonium sulfate affords an enzyme recovery of 99%. The structural conformation of the enzyme was analyzed by Fourier transform infrared data.
Original languageUnknown
Pages (from-to)205-210
JournalSeparation and Purification Technology
Issue numberNA
Publication statusPublished - 1 Jan 2012

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