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Latest Biological pigment Stories

2010-08-26 09:07:00

NEW YORK, Aug. 26 /PRNewswire/ -- With Labor Day fast-approaching and the summer sun almost a thing of the past, women and men across the United States will be in search of fall's must-have skin renewal system to repair and reverse UV damage. According to Dr. Adam Geyer, Kiehl's Since 1851 Consulting Dermatologist, and instructor in clinical dermatology at Columbia University in New York City, "When tans fade, people start to see the remnants of summer, including dark spots, uneven skin...

2010-02-22 10:52:59

Have you seen a spotted plaice? Probably. However, marine biologist Helen Nilsson Sköld at the University of Gothenburg is the first person to research the spotted insides of plaice. Many species of animal have skin or fur with intricate pigmentation patterns, which they use for camouflage, communication, regulation of body heat and protection against the sun. A study conducted by researchers at the Department of Marine Ecology at the University of Gothenburg has found that several...

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2009-11-04 10:33:28

Breeders can enhance nutritional value using inexpensive colorimeter method Carotenoids, the family of yellow to red pigments responsible for the striking orange hues of pumpkins and the familiar red color of vine-ripe tomatoes, play an important role in human health by acting as sources of provitamin A or as protective antioxidants. Pumpkins and squash, available in a wide range of white, yellow, and orange colors, are excellent sources of dietary carotenoids, particularly lutein,...

2009-10-17 09:49:50

The skin's pigment cells can be formed from completely different cells than has hitherto been thought, a new study from the Swedish medical university Karolinska Institutet shows. The results, which are published in the journal Cell, also mean the discovery of a new kind of stem cell. The body's pigment gives essential protection against UV radiation. It is made up of a substance called melanin, which is produced by pigment cells in the skin called melanocytes. According to the established...

2009-08-13 12:40:00

Walking outdoors in the fall, the splendidly colorful leaves adorning the trees are a delight to the eye. In Europe these autumn leaves are mostly yellow, while the United States and East Asia boast lustrous red foliage. But why is it that there are such differences in autumnal hues around the world? A new theory provided by Prof. Simcha Lev-Yadun of the Department of Science Education- Biology at the University of Haifa-Oranim and Prof. Jarmo Holopainen of the University of Kuopio in Finland...

2009-06-30 20:46:35

A U.S. researcher says a specially cultivated purple sweet potato may help fight cancer. Soyoung Lim of Kansas State University in Manhattan in Kansas says the Kansas-developed sweet potato has purple flesh high in anthocyanin -- a flavanoid responsible for red/blue pigment that may have an anti-cancer effect. Sometimes we can find purple sweet potatoes in the grocery store, but they don't have this purple color on the skin and inside, Lim said in a statement. Lim extracted and compared...

2009-06-29 13:19:51

 A Kansas State University researcher is studying the potential health benefits of a specially bred purple sweet potato because its dominant purple color results in an increased amount of anti-cancer components.K-State's Soyoung Lim, doctoral student in human nutrition, Manhattan, is working with George Wang, associate professor of human nutrition at K-State, to understand the pigment effects of a Kansas-bred purple sweet potato on cancer prevention.Lim said purple sweet potatoes have...

2009-06-29 09:43:00

TORRANCE, Calif., June 29 /PRNewswire/ -- Studies have determined certain nutrients have positive effects on eye health. The research focus is on Vitamins C and E, found in high levels in the eye lens; lutein and zeaxanthin, which are concentrated in the retina; and beta-carotene (which converts to Vitamin A), another strong antioxidant. Major studies, like the Blue Mountains Eye Study and the Age-Related Eye Disease Study, have shown positive results in preventing eye problems. The Blue...

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2009-04-15 14:10:16

Study says red carotenoids that give the Common Crossbill its red coloration are produced in the liver, not the skin Where do birds get their red feathers from? According to Esther del Val, from the National History Museum in Barcelona, Spain, and her team, the red carotenoids that give the common crossbill (Loxia curvirostra) its red coloration are produced in the liver, not the skin, as previously thought. Their findings, published online in Springer's journal Naturwissenschaften, have...

2009-01-14 14:37:00

NEW ROCHELLE, N.Y., Jan. 14 /PRNewswire/ -- A special series of papers in the peer-reviewed journal Zebrafish provides a comprehensive look at future directions of research on pigment biology. Model organisms such as zebrafish advance the scientific understanding of the genetic basis of human skin color and race. The papers, which include historical findings and perspectives, are published by Mary Ann Liebert, Inc., and are available online at www.liebertpub.com/zeb "With the election of the...


Latest Biological pigment Reference Libraries

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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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