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Titolo:
COMPARISON OF THE ELECTROCHEMICAL AND ENZYMATIC OXIDATION OF 1,3,7-TRIMETHYLURIC ACID AT SOLID ELECTRODES
Autore:
GOYAL RN; JAIN AK; JAIN N;
Indirizzi:
UNIV ROORKEE,DEPT CHEM ROORKEE 247667 UTTAR PRADESH INDIA
Titolo Testata:
Bulletin of the Chemical Society of Japan
fascicolo: 7, volume: 69, anno: 1996,
pagine: 1987 - 1995
SICI:
0009-2673(1996)69:7<1987:COTEAE>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENZYMATIC OXIDATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
R.N. Goyal et al., "COMPARISON OF THE ELECTROCHEMICAL AND ENZYMATIC OXIDATION OF 1,3,7-TRIMETHYLURIC ACID AT SOLID ELECTRODES", Bulletin of the Chemical Society of Japan, 69(7), 1996, pp. 1987-1995

Abstract

The electrochemical oxidation of 1,3,7-trimethyluric acid has been studied in phosphate buffers in the pH range 2.1-10.2 at solid electrodes. In cyclic voltammetry a single, well defined, pH-dependent oxidation peak was obtained at all of the three electrodes used. However, the reduction behavior of the oxidation product was different at pyrolyticgraphite, glassy carbon (GCE), and platinum due to adsorption at PGE and GCE. The nature of the electrode reaction was established as EC, in which a charge transfer is followed by competitive chemical reactions. The formation of the same UV-absorbing intermediate and products and identical rate constants for the decay of the UV-absorbing intermediate indicated that the electrochemical oxidation of 1,3,7-trimethyluric acid proceeds by an identical mechanism at PGE, GCE, and Pt. The results of a peroxidase-catalyzed oxidation of 1,3,7-trimethyluric acid were compared with the electrochemical oxidation; it is concluded that both of the oxidations follow a similar pathway.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 15:35:42