URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE

Uric acid, a water soluble antioxidant, is able to react with micelle incorporated diphenylpicrylhydracyl radicals. This indicates that uric acid can react at the lipid/water interface. The rate of the process follows the order cationic micelles >buffer/etanol > neutral micelles anionic micell...

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Autores principales:	ABUIN,E., LISSI,E., ORTIZ,P., HENRIQUEZ,C.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2002
Materias:	DPPH uric acid micelles sodium dodecylsulfate Brij-35 dodecyltrimethylammonium bromide
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200010
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spelling	oai:scielo:S0366-164420020002000102002-10-14URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACEABUIN,E.LISSI,E.ORTIZ,P.HENRIQUEZ,C. DPPH uric acid micelles sodium dodecylsulfate Brij-35 dodecyltrimethylammonium bromide Uric acid, a water soluble antioxidant, is able to react with micelle incorporated diphenylpicrylhydracyl radicals. This indicates that uric acid can react at the lipid/water interface. The rate of the process follows the order cationic micelles >buffer/etanol > neutral micelles anionic micelles These results can be explained in terms of the compartmentalization of the reactants in different environments and the effect of electrostatic interactions in modulating the access of the urate anion to the micellar interface. Experiments aimed to determine if urate is able to react with alpha-tocopheroxyl radicals regenerating a-tocopherol were uncesessful, indicating that urate is not able to delay vitamin E consumption in the presence of lipid - soluble free radicalsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.47 n.2 20022002-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200010en10.4067/S0366-16442002000200010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	DPPH uric acid micelles sodium dodecylsulfate Brij-35 dodecyltrimethylammonium bromide
spellingShingle	DPPH uric acid micelles sodium dodecylsulfate Brij-35 dodecyltrimethylammonium bromide ABUIN,E. LISSI,E. ORTIZ,P. HENRIQUEZ,C. URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
description	Uric acid, a water soluble antioxidant, is able to react with micelle incorporated diphenylpicrylhydracyl radicals. This indicates that uric acid can react at the lipid/water interface. The rate of the process follows the order cationic micelles >buffer/etanol > neutral micelles anionic micelles These results can be explained in terms of the compartmentalization of the reactants in different environments and the effect of electrostatic interactions in modulating the access of the urate anion to the micellar interface. Experiments aimed to determine if urate is able to react with alpha-tocopheroxyl radicals regenerating a-tocopherol were uncesessful, indicating that urate is not able to delay vitamin E consumption in the presence of lipid - soluble free radicals
author	ABUIN,E. LISSI,E. ORTIZ,P. HENRIQUEZ,C.
author_facet	ABUIN,E. LISSI,E. ORTIZ,P. HENRIQUEZ,C.
author_sort	ABUIN,E.
title	URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
title_short	URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
title_full	URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
title_fullStr	URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
title_full_unstemmed	URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE
title_sort	uric acid reaction with dpph radicals at the micellar interface
publisher	Sociedad Chilena de Química
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200010
work_keys_str_mv	AT abuine uricacidreactionwithdpphradicalsatthemicellarinterface AT lissie uricacidreactionwithdpphradicalsatthemicellarinterface AT ortizp uricacidreactionwithdpphradicalsatthemicellarinterface AT henriquezc uricacidreactionwithdpphradicalsatthemicellarinterface
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URIC ACID REACTION WITH DPPH RADICALS AT THE MICELLAR INTERFACE

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