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  • Ionic liquids as (co)solvents for enzymatic reactions
    Paljevac, Muzafera ; Leitgeb, Maja ; Knez, Željko
    Ionic liquids are low melting point salts that represent an excitnq new class of reaction solvents. Many reactions show advantages when carried out in ionic liquids, either with regard to enhanced ... reaction rates, improved selectivity, or easier reuse of catalysts. To ascertain the influence of ionic liquids on the enzyme activity three different ionic liquids, 1-butyl-3-methylimidazolium chloride ([bmim] [Cl]), 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim] [PF6]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) were synthesized and investigated as potential media for the hydrolysis of carboxymethyl cellulose, catalyzed by non-immobilized cellulase from Humicola insolens (Celluzyme 0,7T) and for ester synthesis, catalyzed by immobilized lipase from Rhyomucor miehei (Lipozyme RM IM). Enzyme-catalyzed reactions were performed in a batch stirred reactor at atmospheric pressure. Celluzyme 0.7T showed better activity in hydrophobic ionic liquid ([bmim] [PF6]), as compared to hydrophilic ionic liquid ([bmim] [BF4]). In the case of Lipozyme RM IM, the synthetic activity of the enzyme was strongly reduced by incubating the enzyme in ionic liquids. Paper presented at the 1st South-East European congress of chemical engineering, Belgrade, September 25-28, 2005
    Vir: Chemical industry & chemical engineering quarterly. - ISSN 1451-9372 (Vol. 12, no. 3, 2006, str. 181-186)
    Vrsta gradiva - članek, sestavni del
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 10667542

    Povezava(-e):

    http://www.ache.org.rs/CICEQ/2006/No3/PALJEVAC.PDF
    Digitalna knjižnica Univerze v Mariboru – DKUM

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