http://www.cnr.it/ontology/cnr/individuo/prodotto/ID229702
Immobilizzation of Glucose oxidase in silicon dioxide: chemical-fisical, electric and enzymatic characterization (Contributo in atti di convegno)
- Type
- Label
- Immobilizzation of Glucose oxidase in silicon dioxide: chemical-fisical, electric and enzymatic characterization (Contributo in atti di convegno) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Alternative label
V. Aiello, M. Fichera, S. Libertino, A. Scandurra, F. Sinatra, M. Renis, S. Lombardo (2007)
Immobilizzation of Glucose oxidase in silicon dioxide: chemical-fisical, electric and enzymatic characterization
in Giornata di Studio BIOMATERIALI e BIOMECCANIC
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- V. Aiello, M. Fichera, S. Libertino, A. Scandurra, F. Sinatra, M. Renis, S. Lombardo (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- Proc. of the VIII Giornata di Studio BIOMATERIALI e BIOMECCANICA (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dipartimento di Chimica biologica, Chimica medica e Biologia molecolare, Università degli studi di Catania, Viale A. Doria, 6, 95125 Catania, Italia;
Dipartimento di Scienze Biomediche,Università degli studi di Catania, Via S. Sofia, 87, 95100 Catania, Italia;
CNR-IMM sez. Catania, Stradale Primosole, 50, 95121 Catania, Italia;
Laboratorio Superfici e Interfasi (SUPERLAB), Consorzio Catania Ricerche, Stradale Primosole 50, 95121 Catania, Italia. (literal)
- Titolo
- Immobilizzation of Glucose oxidase in silicon dioxide: chemical-fisical, electric and enzymatic characterization (literal)
- Abstract
- The recognition abilities of biological molecules and their specificity are object of increasing
interest by the scientific community, also for their potential use in biosensors fully integrated in
microelectronic chips. Aim of this work was the optimization of an immobilization protocol of
biomolecules on silicon dioxide (SiO2) surfaces to build a biosensor, which has electrical
transducer. We chose to use the Glucose oxidase (GOx) protein as bioreceptor and a SiO2 layer
as immobilization surface, which is possible to integrate into a microelectronic device. To test
the protocol validity and the uniformity of the organic layer obtained, we used X-ray
Photoelectron Spectroscopy (XPS) [1]. In particular, we demonstrated the enzyme presence
monitoring both the C1s and N1s signals; while the XPS Si2p signal, monitored during the
various immobilization steps, allowed us to verify the layer uniformity. We demonstrated that
the glucose oxidase activity was maintained after immobilization by using spectrophotometric
measurements. Finally, to demonstrate that is possible use electrical transduction, we carried out
the electrical characterization of biological molecules immobilized on the dielectric of a MOSlike
structure. (literal)
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