高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (9): 1210.

• 研究论文 • 上一篇    下一篇

Nafion-MV修饰电极丙酮酸氧化酶生物传感器测定GPT的研究

金利通, 叶建山, 方禹之   

  1. 华东师范大学化学系, 上海 200062
  • 收稿日期:1992-10-12 修回日期:1993-03-14 出版日期:1993-09-24 发布日期:1993-09-24
  • 通讯作者: 金利通
  • 作者简介:第一作者:男, 56岁, 教授.

Pyruvate Oxidase Biosensor for the Determination of GPT Based on the Glassy Carbon Electrode Modified with Nafion and Methyl Viologen

JIN Li-Tong YE Jian-Shan, FANG Yu-Zhi   

  1. Department of Chemistry, East China Normal University, Shanghai, 200062
  • Received:1992-10-12 Revised:1993-03-14 Online:1993-09-24 Published:1993-09-24

摘要: 用Nafion-甲基紫精修饰电极为基底,以牛血清白蛋白戊二醛为交联剂,将丙铜酸氧化酶固定在电极上,制成丙酮酸氧化酶生物传感器.用这种生物传感器测定人体血清中谷丙转氨酶(GPT)的活性,共存的尿酸、抗坏血酸等电活性物质不干扰测定.测定GPT的活性范围为0~110U/L,响应时间为50s.该传感器具有灵敏度高、抗干扰能力强和响应快等特点.

关键词: 修饰电极, 生物传感器, 酶电极, 谷丙转氨酶, 丙酮酸氧化酶

Abstract: Pyruvate oxidase biosensor has been constructed by using bovine serum albumin and glutaraldehyde as cross linker to immobilize pyruvate oxidase on glassy carbon electrode modified with Nafion and methyl viologen(MV).Glutamic pyruvic transaminase is determined by its effect on pyruvate production of reaction of the alanine with α-ketoglutarate.The linear range is 0 -110 U/L, and the response time is 50 s, and this biosensor has high selectivity and sensitivity.

Key words: Modified electrode, Biosensor, Enzyme electrode, Glutamic pyruvic transaminase, Pyruvate oxidase

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