Loading...

Magnetic labelled horseradish peroxidase-polymer nanoparticles: A recyclable nanobiocatalyst

Khosravi, A ; Sharif University of Technology | 2013

585 Viewed
  1. Type of Document: Article
  2. DOI: 10.2298/JSC120930133K
  3. Publisher: 2013
  4. Abstract:
  5. In this study, the reusability and process stability of nano-reengineered horseradish peroxidase was investigated in a fluorescence-based sensing system for hydrogen peroxide determination as a model application. To this end, dendron macromolecules were attached to the enzyme surface through bio-conjugation techniques. The resulting enzyme-polymer nanoparticles, with an average size of 14(±2) nm, showed significant life time and thermal stability. For enzyme recovery and reusability purposes, the enzyme-polymer nanoparticles were labelled with magnetic nanoparticles with a labelling yield of 90 %. These labelled enzyme molecules showed significant process stability, i.e., up to 7 recycling period in a model sensing system. A linear calibration curve was obtained over a hydrogen peroxide concentrations range from 5×10-8 to 1×10-5 mol L-1, with a detection limit of 1.3×10-9 mol L-1 for the sensing system under the optimal conditions
  6. Keywords:
  7. Horseradish peroxidase ; Magnetic nanoparticles ; Nano-reengineered enzyme ; Recyclable biocatalyst
  8. Source: Journal of the Serbian Chemical Society ; Volume 78, Issue 7 , 2013 , Pages 921-931 ; 03525139 (ISSN)
  9. URL: http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391200133K&AspxAutoDetectCookieSupport=1#.ViH--W65JIE