Exploiting Kinetic Features of ORAC Assay for Evaluation of Radical Scavenging Capacity [PDF]
Antioxidants, 2023 The analysis and interpretation of data retrieved from Oxygen Radical Absorbance Capacity (ORAC) assays represent a challenging task. ORAC indexes originate from different mathematical approaches often lacking correct elucidation of kinetic features ...
Joana R B Carvalho +2 more
exaly +7 more sources
Ascorbic acid contribution to ORAC values in berry extracts: An evaluation by the ORAC-pyrogallol red methodology [PDF]
Food Chemistry, 2009 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).
H Speisky +2 more
exaly +6 more sources
ORAC of chitosan and its derivatives
Food Hydrocolloids, 2012 Chitosan and chitosan derivatives are receiving a lot of attention as materials of natural origin which possess radical scavengers, antioxidants and antimicrobial properties, especially in food applications.
Luca Casettari +2 more
exaly +4 more sources
Reexamination of the ORAC assay: effect of metal ions
Analytical and Bioanalytical Chemistry, 2011 The oxygen radical absorbance capacity (ORAC) assay method has been employed extensively in the field of antioxidant and oxidative stress. It uses fluorescein as probe for oxidation by peroxyl radical.
Brat, Pierre +3 more
exaly +5 more sources
USE OF THE ORAC-PYROGALLOL RED/ORAC-FLUORESCEIN RATIO TO ASSESS THE QUALITY OF ANTIOXIDANTS IN CHILEAN WINES [PDF]
Journal of the Chilean Chemical Society, 2011 We have recently proposed that ORAC (Oxygen Radical Absorbance Capacity) methods employing fluorescein (ORAC-FL) and pyrogallol red (ORAC-PGR) as target molecules could be considered as complementary indexes.
Mura, E. +4 more
core +6 more sources
The additive properties of Oxygen Radical Absorbance Capacity (ORAC) assay: The case of essential oils [PDF]
Food Chemistry, 2014 The ORAC assay is applied to measure the antioxidant capacity of foods or dietary supplements. Sometimes, the manufacturers claim antioxidant capacities that may not correspond to the constituents of the product.
Paula Vera +2 more
exaly +2 more sources
Antioxidant capacity of phenolic compounds in acidic medium: A pyrogallol red-based ORAC (oxygen radical absorbance capacity) assay [PDF]
Journal of Food Composition and Analysis, 2013 A novel ORAC (oxygen radical absorbance capacity) assay to assess antioxidant capacity of phenolic compounds in near-gastric conditions (pH 2.0) is presented.
H Speisky +2 more
exaly +2 more sources
Influence of extraction solvent on antioxidant capacity value of oleaster measured by ORAC method
Natural Product Research, 2014 Oxygen radical absorbance capacity (ORAC) is a widely used hydrogen atom transfer-based method which measures the antioxidant capacity of natural products. ORAC values of oleaster (Elaeagnus angustifolia L.), which was extracted with ethanol/acetone (7:3,
Sogut, Ozlem +3 more
exaly +2 more sources
Analytical parameters of the microplate-based ORAC pyrogallol red assay [PDF]
Journal of AOAC INTERNATIONAL, 2011 The analytical parameters of the microplatebased oxygen radicals absorbance capacity (ORAC) method using pyrogallol red (PGR) as probe (ORAC-PGR) are presented.
Mónica Antilén +13 more
core +6 more sources
Molecules, 2010 The protective effect of different antioxidants and complex mixtures on the consumption of pyrogallol red (PGR) induced by peroxyl radicals was studied in the absence and presence of Triton X-100 micelles. The presence of micelles decreased significantly
Camilo López-Alarcón +5 more
doaj +2 more sources