Sentences with phrase «for oxygen radical»

ORAC stands for oxygen radical absorption capacity, which estimates the spice's anti-oxidant ability.

ORAC is an acronym that stands for Oxygen Radical Absorbance Capacity.

Here is the Database for the Oxygen Radical Absorbance Capacity released in 2010:

ORAC, which stands for oxygen radical absorbance capacity, is an analysis measuring total antioxidant power of foods.

The findings add to growing support for the oxygen radical theory of aging, says biochemist Irwin Fridovich of Duke University Medical Center.

Not exact matches

For example, some viral - repair enzymes — which excise and resynthesize damaged DNA, mend oxygen radical damage, and so on — are unique to certain viruses and have existed almost unchanged probably for billions of yeaFor example, some viral - repair enzymes — which excise and resynthesize damaged DNA, mend oxygen radical damage, and so on — are unique to certain viruses and have existed almost unchanged probably for billions of yeafor billions of years.

For decades, researchers have known that reactive oxygen species, or free radicals, can do serious damage to cells and trigger cancer.

The researchers don't yet know the exact chemical reactions that produce the free radicals, but the work «quite solidly establishes a new role for reactive oxygen in development,» says ageing researcher Karl - Heinz Krause of the University of Geneva in Switzerland.

This fact makes vacuum UV light extremely useful for industrial applications from sterilizing medical devices to cleaning semiconductor substrates because when it strikes oxygen - containing molecules on a surface, it generates highly reactive oxygen radicals, which can completely destroy any microbes contaminating that surface.

Thus, chlorination can have important ecological functions related to the activity of microorganisms, such as dealing with dangerous oxygen radicals that form during metabolism, or being part of the chemical battle that the microorganisms are engaged in, in the competition for resources in the ground.

Cystine is responsible for maintaining high levels of antioxidants that disarm free radicals of oxygen; so when the researchers got rid of this nutrient, the cancer cells essentially died by their own hand of free radical damage.

In support of this concept, we have shown that mtDNA mutations accumulate in proportion to life span in several animals, that increasing mitochondrial anti-oxidant defense systems extends lifespan, that ancient human mtDNA variants that modify energy production and oxygen radical production can modulate longevity and risk for neurodegenerative diseases, and that patients with the neurodegenerative disease, Alzheimer Disease, have increased mtDNA mutations.

Free radicals are often used in the same sentence with cancer, oxidative stress is a favorite buzzword for many nutritional supplement companies, and reactive oxygen species are rarely mentioned because they're hard to pronounce.

Use of iron chelators in preventing hydroxyl radical damage: Adult Respiratory Distress Syndrome as an experimental model for the pathophysiology and treatment of oxygen - radical - mediated tissue damage.

The antioxidant values of foods listed are expressed in ORAC (Oxygen Radical Absorbance Capacity) units, a unit of measurement for antioxidant content which was originally developed by the National Institute on Aging (NIA) at the National Institutes of Health (NIH).

They claimed that witch hazel had a high affinity for human cells and cell membranes and hence was highly equipped to defend them against reactive oxygen species (free radicals).

Various hypotheses have been put forward to explain the molecular reasons for aging, a prominent role among them being played by the free radical theory of aging.3, 4 Free radical components (reactive oxygen species or ROS) or lipid peroxide (LPO) is involved in the pathogenesis and progression of accelerated skin aging and chronic skin conditions such as acne vulgaris.

The level of antioxidants in foods is evaluated by ORAC Score, which stands for «oxygen radical absorbance capacity».

Antioxidants are effective at preventing something called sebum peroxidation, which is when free radicals damage the skin's sebum, lowering its oxygen content, and making it an ideal environment for an anaerobic bacteria, P. acnes, to thrive and reproduce.

Excessive oxidation (from free radicals, for example) changes the iron to the ferric form, which will not function as an oxygen carrier.

The oxygen that is released from the sulfate radical is picked up by the myoglobin, sequestered inside the molecule for safe travel to the mitochondria.

When your body is able to burn fat for fuel, your liver creates water - soluble fats called ketones that burn far more efficiently than carbs, thereby creating fewer reactive oxygen species (ROS) and secondary free radicals.

It has been tested under laboratory conditions for effectiveness against a variety of free radicals, including singlet oxygen, super-oxide, and hydroxyl radicals.

Flavonoids are powerful antioxidants and are believed to help the body's cells resist damage by free radicals, which are formed by numerous processes including when the body's cells utilize oxygen for energy.

The mitochondria in our cells are responsible for releasing energy from the molecules in our food, but they also unleash electron - stealing free radicals like reactive oxygen and reactive nitrogen species.

Conversely, oxygen and nitrogen free radicals are essential for all aerobic organisms where free radicals and ROS are used for advantageous biological effects.

The therapeutic dotential of dietary precursor modulation by a fish - oil - supplemented diet (n - 3 fatty acids), such as eicosapentaenoic acid (C20: 5,n - 3) and docosahexaenoic acid (C22: 6,n - 3) in the therapy of ulcerative colitis has been shown to result in a 35 % to 50 % decrease in neutrophil production of LTB4.28 Significant improvement in symptoms and histologic appearance of the rectal mucosa has been observed in several small series of patients with Crohn's disease and ulcerative colitis given fish oil at 3 to 4 g daily for 2 to 6 months in uncontrolled studies.29 However, a larger, randomized, double - blind trial comprising 96 patients with ulcerative colitis failed to reveal any benefit in remission maintenance or treatment of relapse on 4.5 g of eicosapentaenoic acid daily, despite a significant reduction in LTB4 synthesis by blood peripheral polymorphonuclear cells.30 It should be emphasized, however, that the anti-inflammatory actions of the fish oils, in addition to inhibition of LTB4, include suppression of IL - 1 and platelet activating factor synthesis and scavenging of free oxygen radicals.30 The impact of increased lipid peroxidation after fish oil supplementation should be considered when altering the n - 6: n - 3 fatty acid ratio.31 Antioxidant supplementation may be able to counteract the potentially adverse effects of n - 3 fatty acids.

Oxygen free radicals are toxic for cells, since they cause damage to cell membranes surrounding living cells as well as their nucleus and other inner organelles, eventually leading to cell death.

Simulations with GCMs by Stevenson et al. (2000) and Grewe et al. (2001) for the 21st century indicate a decrease in the lifetime of tropospheric ozone as increasing water vapour enhances the dominant ozone sink from the oxygen radical in the 1D excited state (O (1D)-RRB- plus water (H2O) reaction.