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Preparation of Chitosan Particles Suitable for Enzyme Immobilization

Biró, E. and Szemesné Németh, Ágnes and Sisak, Cs. and Feczkó, Tivadar and Gyenis, János (2008) Preparation of Chitosan Particles Suitable for Enzyme Immobilization. JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS, 70 (6). pp. 1240-1246. ISSN 0165-022X

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Abstract

Macro-, micro- and nanosized chitosan particles suitable as immobilization carriers were prepared by precipitation, emulsion cross-linking and ionic gelation methods, respectively. Effects of particle preparation parameters on particle size were investigated. Activities of β-galactosidase covalently attached to differently sized particles have been evaluated and compared. The highest activity was shown by the biocatalyst immobilized on nanoparticles obtained by means of the ionotropic gelation method with sodium sulphate as gelation agent. β-Galactosidase fixed on macro- and microspheres exhibited excellent storage stability in aqueous solution, with no more than 5% loss of activity after 3 weeks storage at 4 °C and pH 7.0.

Item Type: Article
Subjects: Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3011 Biochemistry / biokémia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3015 Molecular biology / molekuláris biológia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3020 Biophysics / biofizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 02 Jul 2013 12:38
Last Modified: 02 Jul 2013 12:38
URI: http://real.mtak.hu/id/eprint/5780

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