Nanoclays for lipase immobilization: Biocatalyst characterization and activity in polyester synthesis

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Abstract

© 2016 by the authors. The immobilization of Candida antarctica lipase B (CALB) was performed by physical adsorption on both neat and organo-modified forms of sepiolite and montmorillonite. The influence of different parameters, e.g., solvent, enzyme loading, cross-linking, and type of clay support, on immobilization efficiency and catalyst hydrolytic activity has been investigated. The highest hydrolytic activities were obtained for CALB immobilized on organo-modified clay minerals, highlighting the beneficial effect of organo-modification. The esterification activity of these CALB/organoclay catalysts was also tested in the ring-opening polymerization of "-caprolactone. The polymerization kinetics observed for clay-immobilized catalysts confirmed that CALB adsorbed on organo-modified montmorillonite (CALB/MMTMOD) was the highest-performing catalytic system.

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öztürk, H., Pollet, E., Phalip, V., Güvenilir, Y., & Avérous, L. (2016). Nanoclays for lipase immobilization: Biocatalyst characterization and activity in polyester synthesis. Polymers, 8(12). https://doi.org/10.3390/polym8120416

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