Sentences with phrase «produce hydrogen sulfide»

Adapted to their very hot but watery environment, these microbes metabolized hydrogen - rich compounds or dead or live organic materials to derive the energy that sustains anaerobic life, including sulfate - reducing bacteria that produce Hydrogen Sulfide (H2S), fermentative bacteria that produce carbon dioxide and alcohol -LRB-- OH), and methanogenic bacteria — the methanogens found in sewage and mudflats today — that produce methane (CH4) gas as a waste product.

The same thing is found at present - day whale falls during the sulfophilic stage — the last and longest part of organic - fall succession, when bacteria produce hydrogen sulfide as they break down what's left of the bones.

Our cells produce hydrogen sulfide from the amino acid L - cysteine, thanks to help from two enzymes, cystathionine β - synthase (CBS) and cystathionine & # 947 - lyase (CSE).

They produce hydrogen sulfide, which, in combination with nitric oxide (a typical by - product of bacterial metabolism) seems to protect bacteria from antibiotic assaults.

The new work, by James Mitchell at the Harvard School of Public Health and colleagues, suggests that holding back calories causes cells to produce hydrogen sulfide, which somehow makes tissues more resilient and prolongs the life of laboratory organisms.

This produces hydrogen sulfide, known for its rotten - egg smell, which in turn can deposit bright yellow sulfur.

The study also revealed that Bilophila wadsworthia, a bacterium that produces hydrogen sulfide from the amino acid taurine, was significantly more abundant in African - Americans with colon cancer than in their healthy counterparts.

Sulfur - reducing bacteria and other micro-organisms utilize sulfur compounds within food, producing hydrogen sulfide as an end product.

Bacterial sulfur metabolism produces hydrogen sulfide which is the rotten egg smell.

Just from that the bacteria changes from being irritating and turns into something that destroys the bone and produces hydrogen sulfide, thus causing, bad breath!

The oceans would then become a realm of bacteria metabolizing sulfates, and producing hydrogen sulfide, which would then get released into the water and the atmosphere, killing oceanic plants and terrestrial life.

Not exact matches

It also produces noxious chemicals, such as hydrogen sulfide that sometimes makes the lagoon smell like rotten eggs.

Until now, however, this chemical was not considered a good catalyst for making moly sulfide to produce hydrogen from water through electrolysis.

The Escherichia coli bacterium lives in the gastrointestinal tract, where a lot of hydrogen sulfide is produced, which attenuates mitochondrial respiration.

Thus, in order to successfully produce the main types of «the energy currency» under a high concentration of hydrogen sulfide, the intestinal microflora inhabitants should use a unique type of terminal oxidases, which is missing in the cells of humans and animals,» says Vitaly Borisov.

These orally produced sulfur gases — with names like hydrogen sulfide, methylmercaptan, and dimethyl sulfide — plus some other miscellaneous by - products of bacterial metabolism, account for 90 percent of bad breath that can't be traced to an outside cause.

As bacteria fed on the creatures that rained from above, they produced toxic gases — methane, carbon dioxide, and hydrogen sulfide — that in turn bubbled up to poison the birds and insects flying overhead.

Cutting calories from the diets of mice, fruit flies, nematode worms and yeast led all of the organisms to produce more hydrogen sulfide, Mitchell and colleagues found.

Ultimately, he found that, while volcanic eruptions would have spewed huge quantities of both sulfur dioxide and hydrogen sulfide into the atmosphere, it was the former that dissolved more easily in shallow waters, producing large concentrations of sulfidic anions, in the form of sulfites and bisulfites.

Most of it ends up in landfills where it biodegrades over time, producing biogas, a powerful greenhouse gas largely composed of carbon dioxide, methane and hydrogen sulfide.

Professor Songtao Shi, principal investigator on the project, said the presence of hydrogen sulfide produced by the cells governs the flow of calcium ions.

He found that a number of shallow water bivalves had a similar survival strategy — employing endosymbiotic microbes that oxidize hydrogen sulfide to produce energy.

«If you treat cells with antibiotics, you see that they start producing more [hydrogen sulfide] right away.»

Using direct hydrogen sulfide measurements collected in the bottom waters by Luther, Cai calculated how much acid would need to be produced to explain this minimum zone.

This zone is suspected to be due to a combination of factors, most importantly, from acids produced when bottom water rich in toxic hydrogen sulfide gets mixed upward.

Huang refers to the splitting of water, a process used to create gaseous hydrogen and oxygen from liquid water where properly defective molybdenum sulfide could enhance the process and reduce the amounts of energy and costs needed and increase the amount of hydrogen produced.

An animal - based diet may trigger IBD by causing microbial enzyme activity in the intestines, which produces a harmful gas called hydrogen sulfide.

Other undesirables that appear during chemical hydrolysis are levulinic and formic acids, instead of beneficial lactic acid, and the gas produces dimethyl sulfide, hydrogen sulfide and furfurol from the amino acid methionine.

Hydrogen sulfide gas produced from high sulfur plant foods could be harmful but only those with colonic sulfide - producing bacteria need to be concerned about that, and that is about 50 % of people.

But there's two ways hydrogen sulfide can be produced.

Over-charging a lead acid battery can produce hydrogen - sulfide.

Geologists now know that the Gakkel Ridge is an active zone of slow spreading tectonic plates with massive amounts of activity including explosive emissions of super carbonated magma that have blown the tops off dozens of undersea mountains, produced mineral / metal riches from extensive hydrothermal vents throughout the range and holds sea life around smoker chimneys with abundant hydrogen - sulfide based ecosystems.

Large enough blooms can rob the ocean of oxygen, produce harmful toxins, result in large fish kills, and in the end create dangerous bottom conditions favoring microbial hydrogen sulfide production.

But, steadily, anoxia progressed upward, providing pathways for the hydrogen sulfide producing bacteria to fill up the oceans.

To most life, the hydrogen sulfide gas produced by these little monsters is a deadly toxin.

They were rich in iron and densely populated with hydrogen sulfide producing bacteria.

In rock strata, the anoxic, zones are marked by regions of black as the hydrogen sulfide producing bacteria - filled waters eventually take on the color of tar.

In this theory, the anaerobes took over and produced enormous quantities of hydrogen sulfide, which poisoned life on land for several million years.