Fabrication of Bienzymatic Glucose Biosensor Based on Novel Gold Nanoparticles-Bacteria Cellulose Nanofibers Nanocomposite

  • Wei Wang
  • , Hong Yi Li
  • , De Wen Zhang
  • , Jing Jiang
  • , Yi Ran Cui
  • , Shuang Qiu
  • , Ying Lin Zhou
  • , Xin Xiang Zhang

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

An exploration of gold nanoparticles-bacterial cellulose nanofibers (Au-BC) nanocomposite as a platform for amperometric determination of glucose is presented. Two enzymes, glucose oxidase (GOx) and horseradish peroxidase (HRP) were immobilized in Au-BC nanocomposite modified glassy carbon electrode at the same time. A sensitive and fast amperometric response to glucose was observed in the presence of electron mediator (HQ). Both of GOx and HRP kept their biocatalytic activities very well in Au-BC nanocomposite. The detection limit for glucose in optimized conditions was as low as 2.3 μM with a linear range from 10 μM to 400 μM. The biosensor was successfully applied to the determination of glucose in human blood samples.

Original languageEnglish
Pages (from-to)2543-2550
Number of pages8
JournalElectroanalysis
Volume22
Issue number21
DOIs
StatePublished - Nov 2010
Externally publishedYes

Keywords

  • Au-BC nanocomposite
  • Biosensors
  • Glucose
  • Glucose oxidase
  • Horseradish peroxidase

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