Journal of Materials Science: Materials in Medicine

, Volume 20, Issue 1, pp 177–183

Investigation of carbon nanofibers as support for bioactive substances

  • Liliana Olenic
  • Gheorghe Mihailescu
  • Stela Pruneanu
  • Dan Lupu
  • Alexandru R. Biris
  • Petre Margineanu
  • Sorina Garabagiu
  • Alexandru S. Biris
Article

DOI: 10.1007/s10856-008-3550-y

Cite this article as:
Olenic, L., Mihailescu, G., Pruneanu, S. et al. J Mater Sci: Mater Med (2009) 20: 177. doi:10.1007/s10856-008-3550-y

Abstract

In this paper we have studied the adsorption properties of various bio-active systems onto the surface of carbon nanofibers (CNF) synthesized by chemical vapor deposition (CVD). Amino acids (alanine, aspartic acid, glutamic acid) and glucose oxidase (GOx) were adsorbed on CNF and the results were compared with those obtained when activated carbon (AC) was used as support. CNF and AC properties (hydrophilic or hydrophobic properties) were characterized by the pH value, the concentration of acidic/basic sites and by naphthalene adsorption. CNF with immobilized GOx was additionally investigated as a highly sensitive glucose biosensor. An amperometric method was used in an original manner to detect the changes in the specific activity of GOx, immobilized longer time on CNF. The method demonstrates that not the whole enzyme adsorbed onto CNF can catalyze the oxidation of glucose from the solution.

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Liliana Olenic
    • 1
  • Gheorghe Mihailescu
    • 1
  • Stela Pruneanu
    • 1
    • 2
  • Dan Lupu
    • 1
  • Alexandru R. Biris
    • 1
  • Petre Margineanu
    • 1
  • Sorina Garabagiu
    • 1
  • Alexandru S. Biris
    • 3
  1. 1.National Institute for R&D of Isotopic and Molecular TechnologiesCluj-NapocaRomania
  2. 2.School of Natural SciencesNewcastle UniversityNewcastleUK
  3. 3.Nanotechnology Center and Applied Science DepartmentUniversity of Arkansas at Little RockLittle RockUSA