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Títol: Phenolic compounds as enhancers in enzymatic and electrochemical oxidation of veratryl alcohol and lignins
Autor: Díaz González, María
Vidal Lluciá, Teresa
Tzanov, Tzanko
Altres autors/autores: Universitat Politècnica de Catalunya. Departament d'Enginyeria Química; Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera; Universitat Politècnica de Catalunya. CIPAGRAF - Grup de Recerca Paperer i Gràfic; Universitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
Matèries: Àrees temàtiques de la UPC::Enginyeria química::Biotecnologia
Tipus de document: Article
Descripció: Sixteen phenolic compounds, 14 of which naturally occurring, were compared to the synthetic 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) and violuric acid (VA) in terms of their ability to act as mediators/enhancers in: (1) laccase oxidation of veratryl alcohol as a lignin model compound, and (2) electrochemical oxidation of kraft and flax lignins. HPLC analysis revealed that the syringyl-type phenols methyl syringate and acetosyringone were the most efficient natural enhancers in the laccase oxidation of veratryl alcohol. Both compounds, though far from the performance of ABTS were able to generate veratraldehyde in amount similar to that obtained with VA. By contrast, the best performing phenolic enhancers for the electrochemical oxidation of lignins were sinapinaldehyde, vanillin, acetovanillone, and syringic acid. Catalytic efficiencies close to those achieved with ABTS and VA were calculated for these phenolic compounds.
Postprint (published version)
Altres identificadors i accés: Diaz, M.; Vidal, T.; Tzanov, T. Phenolic compounds as enhancers in enzymatic and electrochemical oxidation of veratryl alcohol and lignins. "Applied microbiology and biotechnology", 23 Febrer 2011, vol. 89, núm. 6, p. 1693-1700.
DOI 10.1007/s00253-010-3007-3
Disponible al dipòsit:E-prints UPC

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