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Latest Biological pigment Stories

2011-11-30 04:43:34

A biomimetic antenna for gathering sunlight may one day transform solar-powered devices. Sometimes when people talk about solar energy, they tacitly assume that we´re stuck with some version of the silicon solar cell and its technical and cost limitations. Not so. The invention of the solar cell, in 1941, was inspired by a newfound understanding of semiconductors, materials that can use light energy to create mobile electrons–and ultimately an electrical current....

They Call It 'Guppy Love'
2011-11-25 04:34:35

UCLA biologists solve an evolution mystery Guppies in the wild have evolved over at least half-a-million years – long enough for the males' coloration to have changed dramatically. Yet a characteristic orange patch on male guppies has remained remarkably stable, though it could have become redder or more yellow. Why has it stayed the same hue of orange over such a long period of time? Because that's the color female guppies prefer. "Sometimes populations have to evolve just to...

Instant Camouflage Discovered In Two Cephalopods
2011-11-11 11:17:36

[ Watch the Video ] Scientists have discovered two deep ocean species of cephalopods, the octopus Japetella heathi and the squid Onychoteuthis banksii, that can go from transparent to opaque in the blink of an eye, a new study finds. This impressive camouflage swap, from both an octopus and a squid, is an adaptation that help keeps the species safe from different types of predators, Stephanie Pappas of LiveScience reports. The first predators that the cephalopods must be wary of are...

2011-11-10 07:25:00

ST. LOUIS, Nov. 10, 2011 /PRNewswire/ -- A recent study published in the November 2011 Journal of Optometry confirms improved vision in elderly patients through nutritional supplementation. The Zeaxanthin (zee-uh-zan-thin) and Visual Function Study (ZVF), conducted by eye nutrition pioneer Stuart Richer, PhD, OD at the Veterans Administration Hospital in Chicago, shows scientific evidence that dietary Zeaxanthin improved vision in night driving and fine detail, among others. The ZVF...

2011-09-27 09:25:45

Individuals with oculocutaneous albinism, type 1 (OCA1) have white hair, very pale skin, and light-colored irises because they have none, or very little, of the pigment melanin in their skin, hair, and eyes. Affected individuals have impaired eyesight and a substantially increased risk of skin cancer. Current treatment options are limited to attempts to correct eyesight and counseling to promote the use of sun protective measures. A team of researchers, led by Brian Brooks, at the National...

2011-06-09 23:50:49

Johns Hopkins researchers uncover the source of the visual system's 'false alarms' On rare occasion, the light-sensing photoreceptor cells in the eye misfire and signal to the brain as if they have captured photons, when in reality they haven't. For years this phenomenon remained a mystery. Reporting in the June 10 issue of Science, neuroscientists at the Johns Hopkins University School of Medicine have discovered that a light-capturing pigment molecule in photoreceptors can be triggered by...

2011-04-04 06:37:00

NEW YORK, April 4, 2011 /PRNewswire/ -- Melasma is a very common skin disorder that produces patches of brown discoloration on the face and can affect anyone. An estimated 50% to 70% of pregnant women in the US develop melasma. Board-certified dermatologist, Dr. Arielle Kauvar, has developed Illuminase(TM), a new procedure that has been shown to effectively combat melasma and hyperpigmentation with excellent results, far outperforming any current treatments available. Illuminase combines...

2011-01-18 14:26:18

Method recovers pigmented carotenoids from dried Capsicum, reduces use of hazardous solvents Plant pigments are an important source of non-toxic compounds for use as food or cosmetic coloring agents. In addition to their known nutritional value, the red pigments in Capsicum (chile pepper) are important as sources of non-toxic red dyes; the red pigments are added to many processed foods and cosmetics to enhance their appearance. Certain varieties of Capsicum annuum can be "extracted' to...

2010-11-29 18:52:38

The University of Illinois scientists who linked eating tomatoes with a reduced risk of prostate cancer have developed a tool that will help them trace the metabolism of tomato carotenoids in the human body. And they've secured funding from the National Institutes of Health to do it. "Scientists believe that carotenoids"”the pigments that give the red, yellow, and orange colors to some fruits and vegetables"”provide the cancer-preventive benefits in tomatoes, but we don't know...

2010-11-10 12:04:49

Carotenoid pigments are the source of many of the animal kingdom's most vivid colors; flamingos' pink feathers come from eating carotenoid-containing shrimps and algae, and carotenoid colors can be seen among garden birds in blackbirds' orange beaks and blue tits' yellow breast feathers. These pigments play a crucial role in sexual signals. According to the study's lead author Dr Tom Pike of the University of Exeter: "Females typically use carotenoid colors to assess the quality of a...


Latest Biological pigment Reference Libraries

36_f61e1d06665cdaf1d8abd985143002f9
2005-06-23 09:04:50

Chameleons are small to mid-size reptiles that belong to one of the best known lizard families (Chamaeleonidae). They are famous for their ability to change their color also because of their elongated tongue and their eyes which can be moved independently of each other. The name "Chameleon" means "earth lion" and is derived from the Greek words chamai (on the ground, on the earth) and leon (lion). Distribution and habitat The main distribution of Chameleons is Africa and Madagascar,...

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