DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS

ABSTRACT The study and determination of the antioxidant capacity of the Greigia Sphacelata fruit were carried out. G. sphacelata is an endemic fruit of central-southern Chile, better known as Chupón or Quiscal. Spectrophotometric and modified ORAC test were developed for antioxidant capacity determi...

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Autores principales:	Aravena-Sanhueza,Felipe, Pérez-Rivera,Mónica, Castillo-Felices,Rosario, Mundaca-Uribe,Rodolfo, Aranda Bustos,Mario, Peña Farfal,Carlos
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2020
Materias:	Antioxidants ORAC Greigia sphacelata DPV
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000304925
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spelling	oai:scielo:S0717-970720200003049252020-10-09DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODSAravena-Sanhueza,FelipePérez-Rivera,MónicaCastillo-Felices,RosarioMundaca-Uribe,RodolfoAranda Bustos,MarioPeña Farfal,Carlos Antioxidants ORAC Greigia sphacelata DPV ABSTRACT The study and determination of the antioxidant capacity of the Greigia Sphacelata fruit were carried out. G. sphacelata is an endemic fruit of central-southern Chile, better known as Chupón or Quiscal. Spectrophotometric and modified ORAC test were developed for antioxidant capacity determinations, and later an electrochemical method was developed by differential impulse voltammetry (DPV) with a vitreous carbon electrode for the quantification of the antioxidant capacity expressed in equivalent of the Trolox standard in µmolL-1. Once the voltammetric test was developed, the correlation study between both methods used to determine the antioxidant capacity of Greigia sphacelata was carried out. The results of the determination of the antioxidant capacity of Greigia sphacelata by ORAC test report an antioxidant capacity of 3525 µmol/100gequivalents of Trolox. Concerning the concentration obtained by the electrochemical methodology, 724 µmol/100g Trolox equivalents is obtained for a linear correlation r = 0.969 with the spectrophotometric method.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.65 n.3 20202020-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000304925en10.4067/s0717-97072020000204925
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Antioxidants ORAC Greigia sphacelata DPV
spellingShingle	Antioxidants ORAC Greigia sphacelata DPV Aravena-Sanhueza,Felipe Pérez-Rivera,Mónica Castillo-Felices,Rosario Mundaca-Uribe,Rodolfo Aranda Bustos,Mario Peña Farfal,Carlos DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
description	ABSTRACT The study and determination of the antioxidant capacity of the Greigia Sphacelata fruit were carried out. G. sphacelata is an endemic fruit of central-southern Chile, better known as Chupón or Quiscal. Spectrophotometric and modified ORAC test were developed for antioxidant capacity determinations, and later an electrochemical method was developed by differential impulse voltammetry (DPV) with a vitreous carbon electrode for the quantification of the antioxidant capacity expressed in equivalent of the Trolox standard in µmolL-1. Once the voltammetric test was developed, the correlation study between both methods used to determine the antioxidant capacity of Greigia sphacelata was carried out. The results of the determination of the antioxidant capacity of Greigia sphacelata by ORAC test report an antioxidant capacity of 3525 µmol/100gequivalents of Trolox. Concerning the concentration obtained by the electrochemical methodology, 724 µmol/100g Trolox equivalents is obtained for a linear correlation r = 0.969 with the spectrophotometric method.
author	Aravena-Sanhueza,Felipe Pérez-Rivera,Mónica Castillo-Felices,Rosario Mundaca-Uribe,Rodolfo Aranda Bustos,Mario Peña Farfal,Carlos
author_facet	Aravena-Sanhueza,Felipe Pérez-Rivera,Mónica Castillo-Felices,Rosario Mundaca-Uribe,Rodolfo Aranda Bustos,Mario Peña Farfal,Carlos
author_sort	Aravena-Sanhueza,Felipe
title	DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
title_short	DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
title_full	DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
title_fullStr	DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
title_full_unstemmed	DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS
title_sort	determination of antioxidant capacity (orac) of greigia sphacelata and correlation with voltammetric methods
publisher	Sociedad Chilena de Química
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000304925
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DETERMINATION OF ANTIOXIDANT CAPACITY (ORAC) OF GREIGIA SPHACELATA AND CORRELATION WITH VOLTAMMETRIC METHODS

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