Abstract
The precipitation of N-cetylamine, N-cetylacetamide, hexadecane-1,2-diol, cetyl alcohol, and poly(butyl metacrylate) in acetone–water media in the presence of the lipase from Pseudomonas fluorescens was found to be accompanied by the coprecipitation of the enzyme. Within the lyophilized coprecipitates, the lipase exhibits a high catalytic activity and enantioselectivity in the reaction of (1RS)-phenylethanol acetylation with vinyl acetate in t-butyl methyl ether. In order of increasing lipase activity, the coprecipitates can be arranged in the series: cetyl alcohol, poly(butyl metacrylate), hexadecane-1,2-diol, N-cetylamine, and N-cetylacetamide, with the activity 2.5- to 19-fold exceeding the activity of the native enzyme. Immobilization of the lipase on solid supports, such as Celite 545 (physical sorption) and Eupergit C250L (covalent binding), in the presence of hexadecane-1,2-diol was found to increase the esterifying activity of the enzyme.
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Gorokhova, I.V., Ivanov, A.E. & Zubov, V.P. Coprecipitation of Pseudomonas fluorescens Lipase with Hydrophobic Compounds As an Approach to Its Immobilization for Catalysis in Nonaqueous Media. Russian Journal of Bioorganic Chemistry 28, 38–43 (2002). https://doi.org/10.1023/A:1013902202789
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DOI: https://doi.org/10.1023/A:1013902202789