Evaluation of the antioxidant activity of the flavonoids isolated from Heliotropium sinuatum resin using ORACFL, DPPH and ESR methodologies

Germán Barriga-González; Eduardo Chamorro; Melissa Salinas; Brenda Modak; Claudio Olea-Azar

doi:10.4067/S0717-97072016000300024

Evaluation of the antioxidant activity of the flavonoids isolated from Heliotropium sinuatum resin using ORAC_FL, DPPH and ESR methodologies

Germán Barriga-González, Eduardo Chamorro, Melissa Salinas, Brenda Modak, Claudio Olea-Azar

Exact Sciences School

Research output: Contribution to journal › Article › peer-review

Abstract

The antioxidant capacity has been determined for a number of flavonoid compounds from Heliotropium sinuatum, a plant that grows in arid areas in the north of Chile. The methodologies used were: ORAC_FL (oxygen radical absorbance capacity - fluorescein), DPPH (2,2-diphenyl-2-picrylhydrazyl) bleaching and electron spin resonance (ESR). These compounds were studied in homogeneous and heterogeneous media. The results showed that the 7-o-methyleriodictiol and 3-o-methylisorhamnetin are those with the highest antioxidant capacity.

Original language	English
Pages (from-to)	3125-3129
Number of pages	5
Journal	Journal of the Chilean Chemical Society
Volume	61
Issue number	3
DOIs	https://doi.org/10.4067/S0717-97072016000300024
Publication status	Published - 1 Sept 2016

Keywords

Antioxidants
DPPH
ESR
Flavonoids
Micelle
ORAC

ASJC Scopus subject areas

General Chemistry

Access to Document

10.4067/S0717-97072016000300024

Cite this

@article{29937880f69244558f32cd243553ecb7,

title = "Evaluation of the antioxidant activity of the flavonoids isolated from Heliotropium sinuatum resin using ORACFL, DPPH and ESR methodologies",

abstract = "The antioxidant capacity has been determined for a number of flavonoid compounds from Heliotropium sinuatum, a plant that grows in arid areas in the north of Chile. The methodologies used were: ORACFL (oxygen radical absorbance capacity - fluorescein), DPPH (2,2-diphenyl-2-picrylhydrazyl) bleaching and electron spin resonance (ESR). These compounds were studied in homogeneous and heterogeneous media. The results showed that the 7-o-methyleriodictiol and 3-o-methylisorhamnetin are those with the highest antioxidant capacity.",

keywords = "Antioxidants, DPPH, ESR, Flavonoids, Micelle, ORAC",

author = "Germ{\'a}n Barriga-Gonz{\'a}lez and Eduardo Chamorro and Melissa Salinas and Brenda Modak and Claudio Olea-Azar",

note = "Funding Information: Germ?n Barriga Gonz?lez thanks financial support by FONDECYT grant No 3120241. Eduardo Chamorro thanks financial support by FONDECYT No 1140343, Nucleo UNAB DI-219-12N and The Millenium Science Initiative Nucleus No. 120082. Publisher Copyright: {\textcopyright} 2016, Sociedad Chilena de Quimica. All rights reserved.",

year = "2016",

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doi = "10.4067/S0717-97072016000300024",

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T1 - Evaluation of the antioxidant activity of the flavonoids isolated from Heliotropium sinuatum resin using ORACFL, DPPH and ESR methodologies

AU - Barriga-González, Germán

AU - Chamorro, Eduardo

AU - Salinas, Melissa

AU - Modak, Brenda

AU - Olea-Azar, Claudio

N1 - Funding Information: Germ?n Barriga Gonz?lez thanks financial support by FONDECYT grant No 3120241. Eduardo Chamorro thanks financial support by FONDECYT No 1140343, Nucleo UNAB DI-219-12N and The Millenium Science Initiative Nucleus No. 120082. Publisher Copyright: © 2016, Sociedad Chilena de Quimica. All rights reserved.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - The antioxidant capacity has been determined for a number of flavonoid compounds from Heliotropium sinuatum, a plant that grows in arid areas in the north of Chile. The methodologies used were: ORACFL (oxygen radical absorbance capacity - fluorescein), DPPH (2,2-diphenyl-2-picrylhydrazyl) bleaching and electron spin resonance (ESR). These compounds were studied in homogeneous and heterogeneous media. The results showed that the 7-o-methyleriodictiol and 3-o-methylisorhamnetin are those with the highest antioxidant capacity.

AB - The antioxidant capacity has been determined for a number of flavonoid compounds from Heliotropium sinuatum, a plant that grows in arid areas in the north of Chile. The methodologies used were: ORACFL (oxygen radical absorbance capacity - fluorescein), DPPH (2,2-diphenyl-2-picrylhydrazyl) bleaching and electron spin resonance (ESR). These compounds were studied in homogeneous and heterogeneous media. The results showed that the 7-o-methyleriodictiol and 3-o-methylisorhamnetin are those with the highest antioxidant capacity.

KW - Antioxidants

KW - DPPH

KW - ESR

KW - Flavonoids

KW - Micelle

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