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Research Article Open access CC BY 3.0

Preparation of Macroporous Poly (GMA-DVB) and Its Application to Immobilize β-Galactosidase from Aspergillus Oryzae

Sun Sufang, Ming Xuejie, PengLulu .

International Research Journal of Pure and Applied Chemistry · pp. 234–242 · Published 26 Dec 2013

10.9734/IRJPAC/2014/7241

Abstract

The reactive, macroporous glycidyl methacrylate (GMA) and divinyl benzene (DVB) polymer was synthesized with a mixture of cyclohexanol and lauryl alcohol as liquid pore-forming agents and nano-calcium carbonate as solid one via suspension polymerization. The surface structure of the poly (GMA-DVB) beads was characterized with scanning electron microscopy (SEM). Under the optimum conditions, β-galactosidase from Aspergillus Oryzae was bound on the polymer beads obtained above. The activity yield of the immobilized enzyme was 80.35% and the activity of it could reach 540.01 IU/g dry carriers. Meanwhile, the basic properties of the immobilized enzyme, such as optimum temperature, optimum pH, pH stability, thermal stability, operational stability, etc., were investigated.  

Glycidyl methacrylate divinyl benzene suspension polymerization β-galactosidase immobilization

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