Results 31 to 40 of about 49,587 (289)

Guidelines for antioxidant assays for food components

Food Frontiers, 2020
Recently, research on antioxidants has become increasingly active in various fields. Antioxidants react through free radical or molecular oxygen quenching, being capable to either delay or inhibit the oxidation processes that occur under the influence of
Fan Xiao, Tao Xu, Baiyi Lu, Ruihai Liu
doaj   +1 more source

Nutritional characterization of Moringa oleifera leaves, seeds, husks and flowers from two regions of Mexico

Agronomía Colombiana, 2020
Moringa oleifera (MO) is a native tree species found in the south of the Himalayas, India, Bangladesh, Afghanistan and Pakistan that is used commercially to produce tea, animal fodder and herbal medicines.
Salvador Horacio Guzmán-Maldonado, Marcela Josefina López-Manzano, Tomás Jesús Madera-Santana, Carlos Alberto Núñez-Colín, Claudia Patricia Grijalva-Verdugo, Alma Guadalupe Villa-Lerma, Jesús Rubén Rodríguez-Núñez   +6 more
doaj   +1 more source

Chemical-free recovery of protein from cow manure digestate solid and antioxidant activity of recovered protein

Environmental Challenges, 2021
Livestock manure solids have a significant content of protein which is not only underutilized, but prone to runoff and eventual breakdown to reactive nitrogen compounds, contributing to eutrophication.
Ken Tasaki
doaj   +1 more source

Automated assay of oxygen radical absorbance capacity with the COBAS FARA II

Clinical Chemistry, 1995
Abstract Reactive oxygen species are of interest in biology and medicine because of evidence relating them to aging and disease processes. A relatively simple but sensitive and reliable method for quantifying the oxygen radical absorbance capacity (ORAC) of antioxidants in biological tissues has been automated for use with the COBAS FARA
G, Cao, C P, Verdon, A H, Wu, H, Wang, R L, Prior   +4 more
openaire   +2 more sources

Processed meat consumption and lung function: modification by antioxidants and smoking [PDF]

, 2014
Unhealthy dietary patterns are associated with poorer lung function. It is not known whether this is due to low consumption of antioxidant-rich fruit and vegetables, or is a consequence of higher intakes of harmful dietary constituents such as processed ...
Okubo, H., Syddall, H.E., Aihie Sayer, A., Sayer, AA, Shaheen, S.O., Grp, HCS, Cooper, C., Ntani, G, Jameson, KA, Robinson, SM, Dennison, E.M., Dennison, EM, Cooper, Cyrus, Cooper, C, Shaheen, SO, Syddall, HE, Okubo, H, Robinson, S.M., Ntani, G.   +18 more
core   +1 more source

Structure-antioxidant Activity (Oxygen Radical Absorbance Capacity) Relationships of Phenolic Compounds [PDF]

, 2021
Abstract Antioxidant capacity is the extent to which a compound can eliminate reactive oxygen species, and in vitro methods for its chemical evaluation have been proposed. Among these methods, the oxygen radical absorbance capacity (ORAC) assay comes close to the oxidation reaction in the living body because it generates radical species that ...
Shuhei Sakurai, Yuta Kawakami, Manabu Kuroki, Hiroaki Gotoh   +3 more
openaire   +1 more source

Antioxidant Capacity in the Lipophilic Fraction of Alzheimer’s Brain Tissues

Biomolecules & Biomedicine, 2007
The aim of this study was to investigate the antioxidant capacity (AC) in the lipophilic fraction of postmortem motorcortex (MC), nucleus caudatus (NC) and gyrus temporalis (GT) from controls (C) and Alzheimer’s disease (AD) patients.
Aida Šapčanin, Emin Sofić, Ismet Tahirović, Ismet Gavrankapetanović, Kurt Kalcher   +4 more
doaj   +1 more source

The ORAC (oxygen radical absorbance capacity) index does not reflect the capacity of antioxidants to trap peroxyl radicals

RSC Advances, 2015
We demonstrate from kinetic studies that under the experimental conditions proposed for the ORAC protocol, ORAC values do not correlate with the capacity of antioxidants to trap peroxyl radicals (ROO˙), suggesting a dominant role of alkoxyl radicals (RO˙) in the assay.
Dorta, E., Fuentes Lemus, E., Aspée, A., Atala, E., Speisky Cosoy, Hernán, Bridi, R., Lissi Gervaso, Eduardo A., López Alarcón, Camilo   +7 more
openaire   +2 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source