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Tag: "food" at biology news

FDA sees nanotech challenges in every product category it regulates

... delivery systems, cosmetics, medical devices, and food products. Overall, the agency regulates products that are worth nearly $1.5 trillion annually and that account for almost 25 percent of US consumer spending. “Today, there are more than 500 manufacturer-identified nanotechnology consumer products b...

Hormone helps mice 'hibernate,' survive starvation

...just eaten,” said Dr. Kliewer. Because limiting food consumption is known to have a range of beneficial effects, such as lowering blood pressure, cholesterol and glucose levels in the blood, Dr. Kliewer is interested in understanding how FGF21 impacts these processes. “We want to see if we can get s...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...ld include plants that trap fresh water and insect food for frogs," Hedges said. It is not likely that the frog species dispersed simply by swimming because frogs dry easily and are not very tolerant of salt water. In addition to the study's discoveries about Caribbean and Central American frogs, the ...

Newly found sensing system enables certain bacteria to resist human immune defenses

...m-positive bacteria—such as those that can lead to food poisoning, skin disorders and toxic shock—avoid be... throat, flesh-eating disease and various types of food poisoning. In gram-negative bacteria—such as those that cause plague and salmonellosis—a sensory ...

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...orative research team taught forms of tool use and food extraction techniques to high-ranking individuals ...iting a token into a bucket or a pipe to receive a food reward from a separate, unrelated location. After each group of chimpanzees observed a high-rank...

Undergraduate research shows leaderless honeybee organizing

...ty defense, environmental control and maintenance, food production, brood-rearing and education. Like huma...er bees perform to tell other bees where to find a food source, the vibration signal appears to be a more general, multi-purpose form of communication. Schn...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...hey went on to show that carotenoids acquired from food and circulating through the blood were changing in ways that were linked to testosterone levels. Birds who were given additional testosterone depleted their carotenoid levels and became healthier, as if they were combating testosterone directly with ...

Small, self-controlled planes combine plant pathology and engineering

...ng events targeted at our nation’s agriculture and food supply.”...

Nurtured chimps rake it in

...nd rake. The animals who picked the rake with the food reward on the rigid side demonstrated that they understood the causal principles behind the functionality of the rake. The enculturated chimpanzees successfully selected the functional rake, while the sanctuary chimpanzees chose randomly between t...

Marine phytoplankton changes form to protect itself from different predators

...y, with some arguing that Phaeocystis makes a good food source for higher creatures in the cold oceans, while others contend its food role is small. While this paper won’t resolve the dispute, Hay believes it shows that both points o...

Warning from Asian bees

...iculture generally. Bees play a big role in the food supply chain. “In the big scheme of things, hon...Doug Somerville said. “Roughly one-third of the food we eat relates back to bee pollinated crops, so most of the benefits of honeybees actually come from...

CU study reveals why starling females cheat

... members.) This additional male then also acquires food and tends to the nestlings, which increases the chicks' survival rates. While females often leave the group when young, most males live their entire lives with their families and, therefore, are usually related to the chicks. By helping the chicks...

Antarctic icebergs -- Hotspots of ocean life

...ties in polar oceans. As diatoms are the preferred food for krill, we expect the changes in phytoplankton community composition to favor grazing as a key biological process involved in carbon sequestration around free-floating icebergs,” said oceanographer Maria Vernet from Scripps Institution of Oceanogr...

How plague-causing bacteria disarm host defense

... Middle Ages' "Black Death" and a virulent form of food poisoning today. Their study will be published on...y, little bugs that cause what's commonly known as food poisoning. All three bacteria species find their way past the body's immune system through a sophis...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...lly it gets into a living animal, via contaminated food or open wounds, leading to infant botulism or woun...s, killed by the toxin, and C. botulinum has a new food source. "Although in the same group as Clostridium difficile — the Cdiff superbug — C. botulinum...

New research shows sharks use their noses and bodies to locate smells

...urbulent wakes with one or the other flavored with food odor. This produced four separate smell targets for the sharks to locate. "In addition, we also tested the sharks under two light conditions – fluorescent and infrared – and in two sensory conditions – with their lateral lines intact or lesioned ...

Want to save polar bears? Follow the ice

...re for increasingly longer periods of time without food as the sea ice becomes more distant and inaccessible. The main question for conservationists is which of the existing 18 populations of polar bears occurring on two continents and one sub-continent stand the best chance of surviving as the polar ...

Lessons from the orangutans: Upright walking may have begun in the trees

...loor, where they remained bipedal and began eating food from the ground or smaller trees. The ancestors of chimps and gorillas, on the other hand, became more specialized for vertical climbing between the high canopy and the ground and thus developed knuckle-walking for crossing from one tree to another o...

Hawaiian treasure, macadamia nuts good for the heart

...ants then switched diets and continued eating only food provided by the researchers for another five weeks. The Healthy Heart diet with macadamia nuts did reduce total cholesterol, low-density lipoprotein cholesterol and triglyceride levels compared with the standard American diet. "We observed a...

Pistachios lower cholesterol, provide antioxidants

...rs. Controlled feeding experiments provide all the food eaten by study subjects for the duration of the study segment. Participants began the study by eating an Average American Diet consisting of 35 percent total fat and 11 percent saturated fat for two weeks. They then tested three diets for four we...

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