高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (7): 1104.

• 研究简报 • 上一篇    下一篇

醋酸纤维素膜固定化脲酶的研究

王杰1, 宋锡瑾2, 伍明3, 任仲皎3, 袁斌3, 雷灼霖3   

  1. 1. 杭州大学化学系, 杭州, 310028;
    2. 浙江大学化工系, 杭州, 310027;
    3. 中南民族学院化学系, 武汉, 430074
  • 收稿日期:1997-05-21 出版日期:1998-07-24 发布日期:1998-07-24
  • 通讯作者: 王杰,男,36岁,副教授.
  • 作者简介:王杰,男,36岁,副教授.

Studies on Immobilization of Urease on Cellulose Acetate Membrane

WANG Jie1, SONG Xi-Jin2, WU Ming3, REN Zhong-Jiao3, YUAN Bin3, LEI Zhuo-Lin3   

  1. 1. Department of Chemistry, Hangzhou University, Hangzhou, 310028;
    2. Chemical Engineering Department, Zhejiang University, Hangzhou, 310027;
    3. Department of Chemistry, The South Central College for Na iona lities , Wuhan, 430074
  • Received:1997-05-21 Online:1998-07-24 Published:1998-07-24

摘要: 酶固定膜反应器兼具有反应和分离两种功能,是酶工程领域中较活跃的研究课题.随着酶固定化技术和水平的提高,各种固定化酶生物反应器不断涌现,其中以采用固定化脲酶技术制作的人工肾最为成功.

关键词: 醋酸纤维素膜, 固定化, 脲酶

Abstract: Urease was immobilized on cellulose acetate membrane by entrapment. The activity yield and stability of urease immobilized membrane were investigated in catalyzing hydrolysis of urea. The experimental results showed that the activity of urease membrane was related to water content of casting membrane solution. After the enzymatic membrane was used repeatedly for 10 times, the residual activity of urease on the membrane retained 60% of its original. After storage at 4 ℃ for 3 months almost no decrease of enzymatic activity was observed. The optimal pHand temperature of the hydrolysis reaction were also studied. The results showed that this urease immobilized membrane can be used under a wide operational condition.

Key words: Cellulose acetate membrane, Immobilization, Urease

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