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Applied Biochemistry and Biotechnology

, Volume 119, Issue 2, pp 121–131 | Cite as

Immobilization of glucoamylase onto novel porous polymer supports of vinylene carbonate and 2-hydroxyethyl methacrylate

  • Yanli HuoEmail author
  • Yue Li
  • Zhi Yuan
  • Jiaxian Huang
Original Articles

Abstract

Glucoamylase was immobilized onto novel porous polymer supports. The properties of immobilized glucoamylase and the relationship between the activity of immobilized enzyme and the properties of porous polymer supports were investigated. Compared with the native enzyme, the temperature profile of immobilized glucoamylase was widened, and the optimum pH was also changed. The optimum substrate concentration of immobilized glucoamylase was higher than that of native enzyme. After storage for 23 d, the immobilized glucoamylase still maintained about 84% of its initial activity, whereas the native enzyme only maintained about 58% of the initial activity. Moreover, after using repeatedly seven times, the immobilized enzyme maintained about 85% of its initial activity. Furthermore, the properties of porous polymer supports had an effect on the activity of the immobilized glucoamylase.

Index Entries

Glucoamylase immobilization porous supports vinylene carbonate 2-hydroxyethyl methacrylate 

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Copyright information

© Humana Press Inc. 2004

Authors and Affiliations

  1. 1.Department of Chemistry, The State Key Laboratory of Functional Polymer Materials for Adsorption and SeparationNankai UniversityTianjinP.R. China

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