高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (4): 554.

• 论文 • 上一篇    下一篇

辐射聚合固定化α-淀粉酶的研究

颜文礼, 冯真泰, 陈国华, 刘毅灵   

  1. 华侨大学应用化学系, 泉州, 362011
  • 收稿日期:1991-05-06 出版日期:1992-04-24 发布日期:1992-04-24
  • 通讯作者: 颜文礼

Studies on the Immobilization of π-Amylase by Radiation Polymerization

YAN Wen-li, FENG Zhen-tai, CHEN Guo-hua, LIU Yi-ling   

  1. Department of Applied Chemistry, Huaqiao University, Quanzhou, 362011
  • Received:1991-05-06 Online:1992-04-24 Published:1992-04-24

摘要: 用低温辐射聚合法将α-淀粉酶固定到聚甲基丙烯酸-β-羟乙酯载体上。研究了低温辐射聚合固定化的条件;讨论了不同固定化酶对淀粉转化成还原糖的相对活性及其重复使用的稳定性;探索了载体微孔结构与固定化酶活性的关系。结果表明,在真空体系内,酶用量≥250μg/mL、单体浓度在30%~40%之间,于-50℃~-55℃范围内进行5.6×105rad剂量的辐射聚合,所得固定化酶重复使用10多次其相对活性仍可保持在30%以上。

关键词: 辐射聚合, 固定化, &alpha, -淀粉酶

Abstract: The present paper covers the immobilization of α-amylase onto PHEMA by radiation polymerization at low temperatures.The proper condition of the radiation polymerization was mainly investigated.The relative activity of transforming amylogen into reduced sugar and the stability of repeated application of immobilized enzymes obtained from different systems are discussed.The paper narrates the relationship between the relative activity and microhole of the polymer matrix as well.The experiments show that the best conditions are as follows: [E]≥250μg/mL,[M] = 30%~40%, T=-50~55℃, R=5.6×105 rad, vacuum system.The rela-tive activity of the immobilized enzyme got under the above conditions keeps higher than 30% even after being used for more than ten times

Key words: Radiation polymerization, Immobilization, a-Amylase

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