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Tag: "scavenging" at biology news

Studies force new view on biology of flavonoids

...are more readily used up during their free radical scavenging activity and require constant replenishment through diet, scientists say. However, Frei said, it’s also true that such mechanisms require only relatively small amounts of flavonoids to trigger them ?conceptually, it’s a little like a vaccine in w...

Strawberry daiquiris -- the extra-healthy cocktail?

... increase in antioxidant capacity and free radical scavenging activity within the fruit. While such a boost helped the berries resist decay, the same compounds would also be expected to make the strawberries healthier to eat. Dr Korakot Chanjirakul and colleagues at Kasetsart University in Thailand, in colla...

Need to pull an all-nighter?

...kefulness by curbing production of nitric oxide or scavenging the gas once it's produced. The opposite ?a sleeping pill made from nitric oxide donors -- would be much harder, he says, since these compounds would likely break down before ever reaching the brain. However, one of the ways nitric oxide promotes sl...

Pattern of human Ebola outbreaks linked to wildlife and climate

... forests that cover most of the region, due to the scavenging by animals and insects and rapid decomposition, La...ally infected wildlife by discouraging people from scavenging dead animals and by promoting safe hunting and trapping practices, especially because the results sh...

Ferns provide model for tiny motors powered by evaporation

...cientists looked to ferns to create a novel energy scavenging device that uses the power of evaporation to move ...o generate the same amount of electricity as other scavenging devices, say, a solar cell in a calculator. The ideal application, Borno said, would be to power a ...

New finding points way to foiling anthrax's tricks

... human immune system that disrupts bacteria's iron scavenging system," said Ken Raymond, UC Berkeley professor of chemistry and faculty scientist at Lawrence Berkeley National Laboratory. Anthrax bacteria are known to produce two small molecules - bacillibactin and petrobactin - that snatch iron away from t...

First wolverine radio-collared in Pacific Northwest

...hing from moose to mice, and often rely heavily on scavenging for food during winter. "The young female wolverine we collared weighed about 19 pounds, and was in excellent health and condition. She hasn't had kits yet, and is probably just a year old," said Aubry. "It's likely that her parents and possibly si...

More animals join the learning circle

...s how to use sponges to protect their snouts while scavenging (New Scientist, 11 June, p 12). But the evidence from killer whales is much more conclusive because the process was observed from start to finish. Some researchers have suggested that many purported examples of cultural transmission can instead be e...

Scientists find missing enzyme for tuberculosis iron scavenging pathway

...yme" from the pathway for biosynthesis of the iron scavenging agent mycobactin," recalls Dr. Baker. "Mycobactin is a small molecule which binds iron very tightly. Bacteria synthesize it so that they can acquire the iron they need to grow ?it is secreted out into the external environment where it scavenges iron...

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