Antioxidant activity in heterogeneous and homogeneous system of the resinous exudates from Heliotropium stenophylum and H. sinuatum and of 3-O-methylgalangin their main component [Actividad antioxidante en sistema heterogéneo y homogéneo de los exudados resinosos de Heliotropium stenophyllum y H. sinuatum y de 3-O-methylgalangina su componente mayoritario]

Campos A.M.; Lissi E.; Chavez M.; Modak,B

Keywords: oxygen, water, thermodynamics, extract, capacity, plant, parameters, antioxidant, flavonoid, radical, drug, phenol, absorbance, article, hydrophobicity, exudate, red, analytical, triton, activity, micelle, controlled, sinuatum, heliotropium, study, derivative, nonhuman, X, o, unclassified, peroxy, methylgalangin, pyrogallol, resinous, stenophylum

Abstract

The antioxidant activity of resinous extracts obtained from H. stenophylum and H. sinuatum species, was evaluated through ORAC index (Oxygen Radical Absorbance Capacity) in water phase and in presence of Triton X-100 micelles, using as test molecules to pyrogallol red (PGR) and evaluating their reduction by the action of peroxyl radicals obtained from thermolysis of AAPH. The results show that these extracts protect to PGR of the action of the radicals. This protection is reduced drastically in the presence of Triton X-100 micelles. The same effect was observed with the main flavonoid of these extracts (3-O-methylgalangin). These results show the importance of the media of reaction of pure compounds and/or extracts at the time of to take into account their use as antioxidants. © 2012 Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas.

Más información

Título de la Revista: BOLETIN LATINOAMERICANO Y DEL CARIBE DE PLANTAS MEDICINALES Y AROMATICAS
Volumen: 11
Número: 6
Editorial: MS-EDITIONS
Fecha de publicación: 2012
Página de inicio: 549
Página final: 555
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-84869400271&partnerID=40&md5=054b3217317531c395c2e4200f736ac6