Electrodes modified with monoolein cubic phases hosting laccases for the catalytic reduction of dioxygen.
Anal Chem
; 76(2): 283-91, 2004 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-14719872
ABSTRACT
An enzyme-catalyzed process has been used for dioxygen monitoring. The enzymes were two different laccases (p-diphenoldioxygen oxidoreductases), chosen as catalysts for dioxygen reduction. The laccases were immobilized in a liquid crystalline cubic phase formed with monoolein. The structures of the cubic phases, both with and without enzymes, were established using small-angle X-ray scattering. The catalytic reduction of dioxygen was performed using a glassy carbon electrode modified with cubic phases containing the enzymes. The modified electrode was used as a dioxygen sensing system, based on the increasing reduction current of a suitable electrochemical probe in the presence of dioxygen.
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Base de dados:
MEDLINE
Assunto principal:
Oxigênio
/
Quinina
/
Técnicas Biossensoriais
/
Lacase
/
Glicerídeos
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article