Oxygen radical
Oxygen-radical pretreatment promotes cellulose degradation by cellulolytic enzymes
... unwashed oxygen-radical-pretreated wheat straw was determined (Additional file 1: Figure S3), with the amount of reducing sugars from both wheat-straw sam- ples was similar following enzymatic hydrolysis ...
11
Oxygen radical induced erythrocyte hemolysis by neutrophils Critical role of iron and lactoferrin
... Human neutrophils (PMN), when stimulated with such chemotaxins as phorbol myristate acetate (PMA), destroy erythrocytes and other targets. Cytotoxicity depends on PMN- generated reactive oxygen metabolites, yet ...
8
Oxygen radical functionalization of boron nitride nanosheets
... the BNNS lattice, OH-BNNSs. Briefly, this involved, the addition of TB-BNNSs (10 mg) to concentrated sulphuric acid (70 % soln., 15 mL) in a round-bottomed flask (50 mL) followed by bath sonication (45 min) to ensure ...
30
Spontaneous oxygen radical generation by sickle erythrocytes
... membranes induced to acquire sickle hemichrome concomitantly acquired an enhanced ability to mediate hydroxyl radical generation. Finally, sickle erythrocyte membranes greatly enhanced superoxide/peroxide-driven ...
8
Effects of the Dietary Supplement MAK4 on Oxidative Stress Parameters: A “Three Cases” Report
... The antioxidant properties of MAK-4 and MAK-5 were confirmed in mice in which the oxygen radical ab- sorbance capacity (ORAC) was significantly higher following a diet supplemented with MAK. Endogenous an- ...
8
Analysis on Composition and Antioxidative Properties of Phlorotannins Isolated from Japanese Eisenia and Ecklonia Species
... hydrophilic oxygen radical absorbance capacity (H-ORAC) method; the measurements of superoxide anion radical scavenging activity (SOSA) with electron spin resonance (ESR) method; and the ...
12
The generation of oxygen radicals during host plant responses to infection
... inhibitable adrenalin reduction by rice leaves which is coincident with disease resistance expression towards the blast fungus. However, the observation that this activity is still present in leaf diffusates some time ...
24
REACTIVE OXYGEN AND NITROGEN SPECIES SCAVENGING ACTIVITY OF APLOTAXIS AURICULATA RHIZOMES
... oxide radical scavenging, oxygen radical scavenging such as DPPH scavenging, superoxide anion radical scavenging, total antioxidant, hydroxyl radical, nitric oxide scavenging and metal ...
14
In vitro biological effects of two anti diabetic medicinal plants used in Benin as folk medicine
... Oxygen Radical Absorbance Capacity (ORAC) assay ORAC assay was carried out as described by Ou et al. [17]. The reaction was performed at 37°C with a microplate fluorescent reader Fluoroskan Ascent FL™ ...
8
Effects of Muscadine Grape Products on Healthy and Type 2 Diabetic Subjects: Blood Chemistry, Antioxidant Capacity and Membrane Lipids
... Oxygen Radical Absorbance Capacity (ORAC) for juice and wines were similar to those reported by Ou et al., (2001), Huang et al., (2002) and Maxwell et al., (1994), though the plasma readings in this study ...
142
Investigation of an Interaction of Flavonoids on the Antioxidant Activity of Alpha Tocopherol
... ago. Oxygen was released into the atmosphere as water was split to obtain the hydrogen needed to drive metabolic ...atmospheric oxygen led to the formation of the ozone layer that filtered out enough of the ...
195
The Role of Hydrogen Peroxide and Other Reactive Oxygen Species in Wound Healing
... Hyperbaric oxygen therapy (HBOT) is a treatment in which patients breathe 100% oxygen in a pressurized ...with oxygen is 97% and it can reach 100% in a hyperbaric ...of oxygen dissolved in ...
5
Some reactions of oxygen atoms in flames
... atoms, hydroxyl radical, and oxygen atom concentrations in hydrogen rich flames over a wide temperature range.. HYDROGEN ATOM CONCENTRATIONS:.[r] ...
172
Regularities of free radical processes and involutional changes of face and neck skin in different age groups
... free radical processes in the blood plasma, the indices of ROS generation by leukocytes were studied – the basal indicator of chemiluminescence intensity (ICb) and the intensity of chemiluminescence stimulated ...
6
Recombinant superoxide dismutase reduces oxygen free radical concentrations in reperfused myocardium
... free radical; signal B anisotropic with axial symmetry, g parallel = ...the oxygen-centered alkyl peroxyl free radical; and the signal C an isotropic triplet, g parallel = ...
8
A radical shift in perspective: mitochondria as regulators of reactive oxygen species
... superoxide radical is the main ROS formed at most sites of ...free radical (see Glossary) is rapidly dismutated to the non-radical ROS H 2 O 2 , which is membrane permeant and ...
11
In vitro antioxidant effects of dichloromethane –methanol leaf blend extracts of Clutia abyssinica and Maytenus obscura
... reactive oxygen species (ROS) and reactive nitrogen species ...oxide radical, nitric oxide, hydrogen peroxide and hydroxyl radical, which are released as by-products of aerobic metabolism ...
111
Reactive Oxygen Species, Oxidative stress and ROS scavenging system in plants
... Singlet oxygen, Superoxide, hydroxyl and hydrogen peroxide tends to react easily with most biomolecules of the cell, causing their degradation and destruction, contributing to cellular ...
10
Oxygen toxicity: a radical explanation
... when faced with the abrupt transition from anaerobic to aerobic conditions. In E. coli, this standby defense is provided by an FeSOD which, although specific for the metal it contains, is related by sequence to the ...
7
Superoxide Reductase from the Hyperthermophilic Archaeon Pyrococcus furiosus: its Function, Regulation, and Biotechnological Applications
... The anaerobic hyperthermophilic archaeon, Pyrococcus furious, possesses a system for the detoxification of reactive oxygen species, which is different from the classical defense mechanisms present in aerobes. P. ...
239