Results 131 to 140 of about 30,782 (182)
Sustainable Exploitation of Apple By-Products: A Retrospective Analysis of Pilot-Scale Extraction Tests Using Hydrodynamic Cavitation. [PDF]
FoodsTagliavento L +8 more
europepmc +1 more source
Stéphanie Orace, Variation, modulation, transfert. Autour du personnage simonien
Studi Francesi, 2005 openaire +1 more source
Food Chemistry, 2008 Oxygen radical absorbance capacity (ORAC) values have been obtained for a series of teas and herbal infusions employing 2,2′-azo-bis(2-amidinopropane) as free radical source, and fluorescein and pyrogallol red as target molecules. The amounts of phenols in the extracts were evaluated by Folin’s methodology.
Alarcón Abarzúa, Emilio Isaac +4 more
exaly +5 more sources
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). Among berry extracts, only raspberry protected pyrogallol red through a clear induction time, related exclusively to ascorbic acid.
Atala, E. +4 more
exaly +10 more sources
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ORAC of chitosan and its derivatives
Food Hydrocolloids, 2012Abstract 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. With the aim to apply the Oxygen-Radical Absorbance Capacity assay (ORAC), to detect the polysaccharides capacity to scavenge the ...
Casettari L. +4 more
openaire +2 more sources
The ORAC‐DR data reduction pipeline
Astronomische Nachrichten, 2008AbstractThe ORAC‐DR data reduction pipeline has been used by the Joint Astronomy Centre since 1998. Originally developed for an infrared spectrometer and a submillimetre bolometer array, it has since expanded to support twenty instruments from nine different telescopes. By using shared code and a common infrastructure, rapid development of an automated
B. Cavanagh +3 more
openaire +1 more source
Reexamination of the ORAC assay: effect of metal ions
Analytical and Bioanalytical Chemistry, 2011The 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. Hundreds of reports have been published on the use of this method to determine antioxidant capacity in food and biological samples.
Nkhili, Ezzorha, Brat, Pierre
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Antioxidant activity of protocatechuates evaluated by DPPH, ORAC, and CAT methods [PDF]
Food Chemistry, 2016 Hibiscus sabdariffa L. is a worldwide consumed plant, principally after infusion of its dried sepals and calyces, which are usually discarded. Nevertheless, they represent a potential source of natural bioactive compounds, e.g. polyphenols, which could add value to this under-exploited plant.
Claudia Grajeda-Iglesias +2 more
exaly +5 more sources
Fast ORAC-SIA method for antioxidant capacity determination in food samples
Food Chemistry, 2022A novel fluorescent ORAC-SIA method to determine antioxidant capacity in several food samples using fluorescein as the probe was developed. The optimization of the method was through a multivariable design, decreasing the analysis time to 5 min and the AAPH concentration to 67% compared with 90 min in the standard 96-well microplate method.
Willmann Antonio, Jiménez-Morales +2 more
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Comparison of scavenging capacities of vegetables by ORAC and EPR
Food Chemistry, 2014Reactive oxygen species (ROS) are considered to be causative agents of many health problems. In spite of this, the radical-specific scavenging capacities of food samples have not been well studied. In the present work, we have developed an electron paramagnetic resonance (EPR) spin trapping method for analysis of the scavenging capacities of food ...
Hiromi, Kameya +3 more
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