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Covalent immobilization of invertase on PAMAM-dendrimer modified superparamagnetic iron oxide nanoparticles
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2010 (English)In: Journal of nanoparticle research, ISSN 1388-0764, E-ISSN 1572-896X, Vol. 12, no 8, 3057-3067 p.Article in journal (Refereed) Published
Abstract [en]

In this study, polyamidoamine (PAMAM) dendrimer was synthesized on the surface of superparamagnetite nanoparticles to enhance invertase immobilization. The amount of immobilized enzyme on the surface-hyperbranched magnetite nanoparticle was up to 2.5 times (i.e., 250%) as much as that of magnetite nanoparticle modified with only amino silane. Maximum reaction rate (V (max)) and Michaelis-Menten constant (K (m)) were determined for the free and immobilized enzymes. Various characteristics of immobilized invertase such as; the temperature activity, thermal stability, operational stability, and storage stability were evaluated and results revealed that stability of the enzyme is improved upon immobilization.

Place, publisher, year, edition, pages
2010. Vol. 12, no 8, 3057-3067 p.
Keyword [en]
Invertase, Immobilization, Dendrimer, SPION, Nanoparticle, Nanobiotechnology
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-27366DOI: 10.1007/s11051-010-9902-9ISI: 000284275600036Scopus ID: 2-s2.0-77955589344OAI: oai:DiVA.org:kth-27366DiVA: diva2:377357
Note
QC 20101214Available from: 2010-12-14 Created: 2010-12-13 Last updated: 2017-12-11Bibliographically approved

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Toprak, Muhammet

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