Results 251 to 260 of about 617,591 (305)

Antioxidant activities and mechanisms of polysaccharides

Chemical Biology & Drug Design, 2020
AbstractPolysaccharide, as one of the effective components of traditional Chinese medicine, has the activities of anti‐oxidation, anti‐virus, improving immunity and so on. Chinese herbal polysaccharides have a wide range of sources. It is found that polysaccharides in many plants and microorganisms have significant antioxidant effects, mainly through ...
Si Mu, Wenjian Yang, Gangliang Huang
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Mechanisms of oxidation, antioxidants, and atherosclerosis

Current Opinion in Lipidology, 1994
The oxidation of LDL by a number of different cell types has been studied and described. Cells may be able to initiate and seed peroxides in LDL but, in the absence of metals or peroxidase activity, may not be able to oxidize the lipoprotein. Monocyte-derived macrophages and neutrophils are able to initiate and propagate lipid peroxidation.
S, Parthasarathy, N, Santanam
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Antioxidative mechanisms in chlorogenic acid

Food Chemistry, 2017
Although chlorogenic acid (5CQA) is an important ingredient of various foods and beverages, mechanisms of its antioxidative action have not been fully clarified. Besides electron spin resonance experiment, this study includes thermodynamic and mechanistic investigations of the hydrogen atom transfer (HAT), radical adduct formation (RAF), sequential ...
Jelena, Tošović, Svetlana, Marković, Jasmina M, Dimitrić Marković, Miloš, Mojović, Dejan, Milenković   +4 more
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Mechanical Ventilation Antioxidant Trial

American Journal of Critical Care, 2015
Background Many patients each year require prolonged mechanical ventilation. Inflammatory processes may prevent successful weaning, and evidence indicates that mechanical ventilation induces oxidative stress in the diaphragm, resulting in atrophy and contractile dysfunction of diaphragmatic myofibers.
Howe, Kimberly P., Clochesy, John M., Goldstein, Lawrence S., Owen, Hugh   +3 more
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Introduction to Peroxidation and Antioxidation Mechanisms

1988
The propagation and maintenance of life requires substantial energy. The evolution of life on Earth led to utilization of oxygen as the major mediator of energy release from organic molecules, which are the source of energy for most organisms. The participation of oxygen in energy release is not essential, as demonstrated in anaerobic and sulfur ...
M G, Simic, K A, Taylor
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Basic mechanisms of antioxidant activity

BioFactors, 1997
A book originating from an annual meeting of the Oxygen Society (Charleston, South Carolina, 1995) [7] and dedicated to Paul Hochstein in occasion of his retirement is entitled The Oxygen Paradox: the preface and some interesting articles define The Oxygen Paradox as the dual effects of oxygen, in a manner reminiscent of Fridovich’s article 20 years ...
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On the Antioxidant Mechanism of Curcumin:  Classical Methods Are Needed To Determine Antioxidant Mechanism and Activity

Organic Letters, 2000
[reaction: see structure] The antioxidant activity of curcumin (1, 7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione) was determined by inhibition of controlled initiation of styrene oxidation. Synthetic nonphenolic curcuminoids exhibited no antioxidant activity; therefore, curcumin is a classical phenolic chain-breaking antioxidant, donating H
L R, Barclay, M R, Vinqvist, K, Mukai, H, Goto, Y, Hashimoto, A, Tokunaga, H, Uno   +6 more
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Methodology for studying antioxidant activity and mechanisms of action of antioxidants

Food and Chemical Toxicology, 1986
A brief survey of the main reactions involved in lipid peroxidation and of the principal methods used for the detection of lipid peroxidation in authentic food, in model systems and in biological material is given. The reaction of phenolic antioxidants with various radicals generated during lipid peroxidation and the synergism between individual ...
R, Kahl, A G, Hildebrandt
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Evolution of antioxidant defence mechanisms

European Journal of Nutrition, 2000
The metabolic strengths, weaknesses, opportunities and threats of the metabolic ability to split water brought about a proliferation of biological systems, produced a toxic oxygenic environment, and were responsible for the development of antioxidant defence mechanisms.
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Mechanism of Antioxidant Activity

2021
Basically the antioxidants activity follows mechanism based on the redox reactions. Redox reactions are very common in our day-to-day life. During the occurrence of various physiological reactions in our body, free radicals are also generated as inevitable by-products which may cause damage to our cells.
Sharda Sundaram Sanjay, Ashutosh Kumar Shukla   +1 more
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