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Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

BARRIGA-GONZALEZ, GERMÁN et al. EVALUATION OF THE ANTIOXIDANT ACTIVITY OF THE FLAVONOIDS ISOLATED FROM HELIOTROPIUM SINUATUM RESIN USING ORACFL, DPPH AND ESR METHODOLOGIES. J. Chil. Chem. Soc. [online]. 2016, vol.61, n.3, pp.3125-3129. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072016000300024.

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 : ORACFL; ESR; DPPH; flavonoids; micelle; antioxidants.

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