Now showing items 1-10 of 391
Ascorbic acid contribution to ORAC values in berry extracts: An evaluation by the ORAC-pyrogallol red methodology
An oxygen radical absorbance capacity (ORAC) method based on pyrogallol red bleaching (ORAC-PGR) was used to evaluate the scavenging activity of berry extracts (blackberry, blueberry, and raspberry). Among berry extracts, ...
Comparison of different techniques for the preservation and extraction of phlorotannins in the kelp Lessonia spicata (Phaeophyceae): assays of DPPH, ORAC-PGR, and ORAC-FL as testing methods
(Springer Science+Business, 2016)
Preservation, storage, and safe transport of samples are key factors affecting brown algal phlorotannin (phenolics) quantification, their extraction yield, and antioxidant activity. This is especially relevant when field ...
OXYGEN RADICAL ANTIOXIDANT CAPACITY (ORAC) VALUES OF HERBAL TEAS OBTAINED EMPLOYING DIFFERENT METHODOLOGIES CAN PROVIDE COMPLEMENTARY DATA
(Sociedad Chilena de Química, 2009)
ASCORBIC ACID CONTRIBUTION TO ORAC VALUES IN BERRY EXTRACTS: AN EVALUATION BY THE ORAC-PYROGALLOL RED METHODOLOGY
(APPLIED SCIENCE PUBLISHERS, 2009)
USE OF THE ORAC-PYROGALLOL RED/ORAC-FLUORESCEIN RATIO TO ASSESS THE QUALITY OF ANTIOXIDANTS IN CHILEAN WINES
(SOC CHILENA QUIMICA, 2011)
INFLUENCE OF THE TARGET MOLECULE ON THE ORAC INDEX
(AMERICAN CHEMICAL SOCIETY, 2012)
The ORAC (Oxygen Radical Absorbance Capacity) assay has been widely employed to evaluate the antioxidant ability of pure compounds, foods and beverages. The method usually employs fluorescein and AAPH (2,2’-Azo-bis(2-ami ...
ESR, electrochemical and ORAC studies of nitro compounds with potential antiprotozoal activity
Cyclic Voltammetry (CV) and electron spin resonance (ESR) techniques were used in the investigation of several potentially antiprotozoal nitro derivatives of dihydroquinoxaline and indazole. A self-protonation process ...
ESR, ELECTROCHEMICAL AND ORAC STUDIES OF NITRO COMPOUNDS WITH POTENTIAL ANTIPROTOZOAL ACTVITY
(Sociedad Chilena de Química, 2010)