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    Affinity based laccase immobilization on modified magnetic nanoparticles: Biosensing platform for the monitoring of phenolic compounds
    (Taylor and Francis Inc., 2015) Babadostu A.; Guldu O.K.; Demirkol D.O.; Medine E.I.; Unak P.; Timur S.
    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 -0.05 V versus Ag/AgCl. The proposed biosensor allowed to detect catechol and phenol in the range of 0.01-0.4 mM and 0.025-0.2 mM, respectively. Finally, phenol analysis in culture medium of P. putida adapted to phenol was successfully demonstrated with appreciable recovery values. © 2015 Copyright Taylor & Francis Group, LLC.