Affinity Based Laccase Immobilization on Modified Magnetic Nanoparticles: Biosensing Platform for the Monitoring of Phenolic Compounds

作者：Babadostu Alper; Guldu Ozge Kozgus; Demirkol Dilek Odaci; Medine E Ilker; Unak Perihan; Timur Suna^*

来源：International Journal of Polymeric Materials, 2015, 64(5): 260-266.

DOI：10.1080/00914037.2014.936598

• Bioprocess monitoring
• phenolic compounds
• laccase
• magnetic nanoparticles
• biosensor
• surface modification

The authors report an electrochemical phenol biosensor based on the immobilization of laccase (Lac) on the surface of copper capped magnetic core-shell (Fe3O4-SiO2) nanoparticles (MNPs). After synthesis, MNP surfaces were functionalized by silanization and then, modified with histidine (His) and copper, respectively. The performance of the MNP-His/Cu/Lac biosensor has been investigated at -0.05V versus Ag/AgCl. The proposed biosensor allowed to detect catechol and phenol in the range of 0.01-0.4mM and 0.025-0.2mM, respectively. Finally, phenol analysis in culture medium of P. putida adapted to phenol was successfully demonstrated with appreciable recovery values.
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• 出版日期2015-8-13