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2012•Journal of Shenyang University of Chemical TechnologyRequires access

Immobilization of AS1.398 Neutral Proteinase on polyamine Modified Chitosan Microspheres

Zhu Jian-xing

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Abstract

Monodisperse chitosan microspheres in the range 60 μm to 200 μm were prepared as support matrix for immobilized enzyme by phase-inversion suspension cross-linking technique firstly,then polyethylenamine modified chitosan microspheres with more amino group content and better mechanical resistance were prepared.AS1.398 neutral proteinase was immobilized on the support.The recovery of immobilized AS1.398 neutral proteinase activity reached 49 %,which was 2.7 times that as immobilization on pure chitosan microsphere.

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What this paper is about

Monodisperse chitosan microspheres in the range 60 μm to 200 μm were prepared as support matrix for immobilized enzyme by phase-inversion suspension cross-linking technique firstly,then polyethylenamine modified chitosan microspheres with more amino group content and better mechanical resistance were prepared.AS1.398 neutral proteinase was immobilized on the support.The recovery of immobilized AS1.398 neutral proteinase activity reached 49 %,which was 2.7 times that as immobilization on pure chitosan microsphere.

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Available abstract

Monodisperse chitosan microspheres in the range 60 μm to 200 μm were prepared as support matrix for immobilized enzyme by phase-inversion suspension cross-linking technique firstly,then polyethylenamine modified chitosan microspheres with more amino group content and better mechanical resistance were prepared.AS1.398 neutral proteinase was immobilized on the support.The recovery of immobilized AS1.398 neutral proteinase activity reached 49 %,which was 2.7 times that as immobilization on pure chitosan microsphere.

Key concepts: Chitosan, Dispersity, Microsphere, Phase inversion, Chemistry, Immobilized enzyme, Enzyme, Chemical engineering

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