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Significant changes in the transesterification activity of free and mesoporous-immobilized Rhizopus oryzae lipase in ionic liquids
Stockholm University, Faculty of Science, Department of Organic Chemistry.
2010 (English)In: Journal of Biotechnology, ISSN 0168-1656, E-ISSN 1873-4863, Vol. 145, no 3, 281-283 p.Article in journal (Refereed) Published
Abstract [en]

We examined the activity of free Rhizopus oryzae lipase (ROL) and ROL immobilized on mesoporous materials in transesterification reactions in various dialkylimidazolium-cation based ionic liquids. For free ROL, the highest activity (0.39 U/mg protein) was obtained in [OMIm][PF6] followed by that (0.28 U/mg protein) in [BMIm][PF6]. Specific activities of ROL immobilized on mesocellular foam (MCF) were only 0.47 and 0.43 U/mg protein in [OMIm][PF6] and [BMIm][PF6], respectively. However, the specific activities of ROL immobilized on octaclecyl functionalized MCF (C-18-MCF) increased significantly to 15.64 and 14.84U/mg protein in [OMIm][PF6] and [BMIm][PF6], respectively. Consequently, ROL immobilized on C18-MCF is a promising biocatalyst for biotransformation reactions in ionic liquids.

Place, publisher, year, edition, pages
2010. Vol. 145, no 3, 281-283 p.
Keyword [en]
Ionic liquids, Transesterification, Rhizopus oryzae lipase, Immobilization, Mesoporous materials
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-49278DOI: 10.1016/j.jbiotec.2009.11.014ISI: 000274926200010OAI: oai:DiVA.org:su-49278DiVA: diva2:379364
Note
authorCount :2Available from: 2010-12-17 Created: 2010-12-13 Last updated: 2017-12-11Bibliographically approved

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Shakeri, Mozaffar
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