Glucose Oxidase Immobilized in Alginate/Layered Double Hydroxides Hybrid Membrane and Its Biosensing Application

被引：19

作者：

Ding, Shou-Nian ^{[1
]}

Shan, Dan ^{[2
]}

Xue, Huai-Guo ^{[2
]}

Zhu, Dao-Bin ^{[2
]}

Cosnier, Serge ^{[3
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Peoples R China

[2] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Peoples R China

[3] Univ Grenoble 1, CNRS, ICMG FR 2607, Dept Chim Mol,UMR 5250, F-38041 Grenoble, France

来源：

ANALYTICAL SCIENCES | 2009年 / 25卷 / 12期

基金：

中国国家自然科学基金;

关键词：

LAYERED DOUBLE HYDROXIDES; AMPEROMETRIC PHENOL BIOSENSOR; MODIFIED-ELECTRODE; CYANIDE DETECTION; COMPOSITE FILM; MATRIX; CHITOSAN; CONSTRUCTION; MICROSPHERES; STABILITY;

D O I：

10.2116/analsci.25.1421

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

A new type of amperometric glucose biosensor based on alginate (Alg)/layered double hydroxides (LDHs) organic-inorganic composite film is described. This hybrid material combines the advantages of an organic biopolymer, Alg and inorganic LDHs. Glucose oxidase (GOD) immobilized in the material maintained its activity. The composite films were characterized by UV-Vis. The results indicated that GOD retained the essential feature of its native structure in the composite film. The Alg/LDHs/GOD-modified platinum electrode exhibited a fast response to glucose (achieve 95% of the maximum in 10 s), which provided a linear response to glucose over a concentration range of 1.6 x 10(-5) - 2 x 10(-3) M with a detection limit of 4 x 10(-5) M based on S/N = 3. Furthermore, the biosensor exhibited excellent long-term stability, and satisfactory reproducibility. It retained 87% of its original activity after being used for 28 days.

引用

页码：1421 / 1425

页数：5

共 42 条

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