Hydrogen peroxide
hideHydrogen peroxide (H2O2) is a very pale blue liquid, slightly more viscous than water, that appears colorless in dilute solution. It is a weak acid, has strong oxidizing properties, and is a powerful bleaching agent. It is used as a disinfectant, antiseptic, oxidizer, and in rocketry as a propellant. The oxidizing capacity of hydrogen peroxide is so strong that it is considered a highly reactive oxygen species.
In organisms, hydrogen peroxide is naturally produced as a byproduct of oxygen metabolism; virtually all possess enzymes known as peroxidases, which harmlessly and catalytically decompose low concentrations of hydrogen peroxide to water and oxygen.
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News tagged with hydrogen peroxide
Not just bleach: Hydrogen peroxide may tell time for living cells
Nov 03, 2009 |
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If a circadian rhythm is like an orchestra - the united expression of the rhythms of millions of cells - a common chemical may serve as the conductor, or at least as the baton.
New artificial enzyme safer for nature
Oct 22, 2009 |
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Perilous and polluting industrial processes can be made safer with enzymes. But only a short range of enzymes have been available for the chemical industry.
Could antioxidants make us more, not less, prone to diabetes? Study says yes
Oct 06, 2009 |
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We've all heard about the damage that reactive oxygen species (ROS) - aka free radicals - can do to our bodies and the sales pitches for antioxidant vitamins, skin creams or "superfoods" that can stop them. In fact, there ...
MicroRNA drives cells' adaptation to low-oxygen living
Oct 06, 2009 |
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Researchers have fresh insight into an evolutionarily ancient way that cells cope when oxygen levels decline, according to a new study in the October 7th issue of Cell Metabolism. In studies of cells taken from the lining ...
Reactive oxygen's role in metastasis
Sep 16, 2009 |
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Researchers at the Burnham Institute for Medical Research have discovered that reactive oxygen species, such as superoxide and hydrogen peroxide, play a key role in forming invadopodia, cellular protrusions implicated in ...
New method monitors early sign of oxidative stress in cancer
Sep 08, 2009 |
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(PhysOrg.com) -- The growth of cancerous tumors is fueled, at least in part, by the buildup of free radicals -- highly reactive oxygen-containing molecules.
Bacterial vaginosis treatments: Probiotics can increase effectiveness of some antibiotic therapies
Jul 08, 2009 |
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Antimicrobial treatments for bacterial vaginosis (BV) are effective, but taking lactobacillus tablets alongside metronidazole antibiotic therapy increases effectiveness over taking this antibiotic alone, according to a Cochrane ...
OJ worse for teeth than whitening, researchers say
Jun 30, 2009 |
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With the increasing popularity of whitening one's teeth, researchers at the Eastman Institute for Oral Health, part of the University of Rochester Medical Center, set out to learn if there are negative effects on the tooth ...
Hydrogen peroxide marshals immune system (w/Video)
Jun 03, 2009 |
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When you were a kid your mom poured it on your scraped finger to stave off infection. When you got older you might have even used it to bleach your hair. Now there's another possible function for this over-the-counter colorless ...
How oxidative stress may help prolong life
May 29, 2009 |
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(PhysOrg.com) -- Oxidative stress has been linked to aging, cancer and other diseases in humans. Paradoxically, researchers have suggested that small exposure to oxidative conditions may actually offer protection ...
'Green' hair bleach may become environmentally friendly consumer product
Mar 24, 2009 |
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Scientists from Japan today reported development of what could be the world's first "green" hair bleach, an environmentally friendly preparation for lightening the color of hair on the head and other parts ...
No longer a gray area: Our hair bleaches itself as we grow older
Biology /
Feb 23, 2009 |
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Wash away your gray? Maybe. A team of European scientists have finally solved a mystery that has perplexed humans throughout the ages: why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers ...
Gold-palladium nanoparticles achieve greener, smarter production of hydrogen peroxide
Nanotechnology / Nanomaterials
Feb 19, 2009 |
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Hydrogen peroxide is one of the world's most versatile and widely used chemicals. A powerful oxidizing agent, H2O2 is commonly used as a bleach, an antiseptic and a disinfectant.
Nanotubes Sniff Out Cancer Agents in Living Cells
Nanotechnology / Bio & Medicine
Jan 16, 2009 |
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(PhysOrg.com) -- A multidisciplinary team at the Massachusetts Institute of Technology (MIT) has developed carbon nanotubes that can be used as sensors for cancer drugs and other DNA-damaging agents inside living cells. The ...
Teaching Nano to Swim
Oct 14, 2008 |
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(PhysOrg.com) -- Ayusman Sen, head of the Department of Chemistry at Penn State, makes tiny, metallic objects do something extraordinary -- he makes them swim. Sen's work is driven by catalysis, the chemical phenomenon whereby ...
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