One-pot construction of mediatorless bi-enzymatic glucose biosensor based on organic-inorganic hybrid.
Biosens Bioelectron
; 25(7): 1579-86, 2010 Mar 15.
Article
en En
| MEDLINE
| ID: mdl-20006484
ABSTRACT
A new methodology for the fabrication of bienzymatic amperometric glucose biosensor based on the use of an organic-inorganic hybrid is presented. The fabrication involves a self-assembly directed one-pot electrochemical process. Bi-enzymes, horseradish peroxidase (HRP) and glucose oxidase (GOx) are immobilized into the porous and electroactive silica-polyaniline hybrid composite through electrochemical polymerization of N[3-(trimethoxysilyl)propyl]aniline in the presence of enzymes. The modified electrode is designated as PTMSPA/HRP-GOx. The direct electron transfer of HRP is achieved at the modified electrode. Also, the electrode exhibits excellent bio-electro-catalytic activity for the reduction of hydrogen peroxide. The response current at PTMSPA/HRP-GOx modified electrode revealed a good linear relationship with concentration of glucose range between 1 and 20mM with a response time of 7s. Thus, the modified electrode shows the combined advantages of polyaniline and silica networks through synergistic influence from the individual components. The PTMSPA assembly has shown the potential for a third generation amperometric biosensor.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compuestos Orgánicos
/
Técnicas Biosensibles
/
Conductometría
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Glucosa
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Glucosa Oxidasa
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Peroxidasa de Rábano Silvestre
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Compuestos Inorgánicos
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
Idioma:
En
Revista:
Biosens Bioelectron
Asunto de la revista:
BIOTECNOLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Corea del Sur