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Latest Biological pigment Stories

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...

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2010-09-09 08:25:00

A research team led by Cary Pirone from the Department of Biological Sciences at Florida International University has identified bilirubin in the popular Bird of Paradise plant. The breakthrough study, published in the September 2010 issue of the American Society for Horticultural Science's journal HortScience, provides new insights into color production in this iconic tropical plant. Previously thought to be an "animal-only" pigment, bilirubin is best known as the yellowish hue associated...

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...


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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Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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