Artículo de revista
Evaluation of the Antioxidant Activity of the Flavonoids Isolated from Heliotropium Sinuatum Resin Using ORACFL, DPPH and ESR Methodologies
Date
2016Registration in:
J. Chil. Chem. Soc., 61, Nº 3 (2016)
0717-9707
Author
Barriga González, Germán
Chamorro, Eduardo
Salinas, Melissa
Modak, Brenda
Olea Azar, Claudio
Institutions
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