Navigation Links
Pigment


In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption. Some biological material has so-called structural color, which is the result of selective reflection or iridescence, usually done with multilayer structures. Unlike structural color, pigment color is the same for all viewing angles. Nearly all types of cells, such as skin, eyes, fur and hair contain pigment. Butterfly wings typically contain structural color, although many of them contain pigment as well. Creatures that have deficient pigmentation are called albinos.

Because pigment color is the result of selective absorption, there is no such thing as white pigment. A white object is simply a diffuse reflecting object which does not contain any pigment.

In the coloring of paint, ink, plastic, fabric and other material, a pigment is a dry colorant, usually an insoluble powder. There are both natural and synthetic pigments, both organic and inorganic ones. Pigments work by selectively absorbing some parts of the visible spectrum (see light) whilst reflecting others.

A distinction is usually made between a pigment, which is insoluble, and a dye, which is either a liquid, or is soluble. There is no well-defined dividing line between pigments and dyes, however, and some coloring agents are used as both pigments and dyes. In some cases, a pigment will be made by precipitating a soluble dye with a metallic salt. The resulting pigment is called a "lake".

Contents
1 List of pigments

1.1 Heme/Porphyrin based
1.2 Light emitting
1.3 Lipochromes
1.4 Photosynthetic
1.5 Other
1.6 Painting pigments

2 External links

List of pigments

Heme/Porphyrin based

Light emitting

Lipochromes

Photosynthetic

Other

Painting pigments

External links


'"/>


See more about: Pigment

TAG: Pigment
(Date:11/23/2009)...160 participants gathered this week for the sevent...E conference. This year,s topic, "Synthetic Biolog...dical researchers to explore the engineering, scie... field of synthetic biology. , Bonnie L. Bassler...ersity and this year,s conference chair, challenge...
(Date:11/23/2009)...cing some of the highest resolution images of pept...e a deeper understanding how biomolecules manipula...a new treatment for kidney stones using biomolecul... online edition of the journal Proceedings of the...des interact with mineral surfaces by accelerating...
(Date:11/23/2009)...dies reveal in unprecedented detail how the riboso...proteins and guide them toward their destination i...amics flexible fitting (MDFF) to examine the inter...r partners. , The first study, in Proceedings ... intimate signaling between the ribosome and an el...
Breaking Biology News(10 mins):Synthetic biology offers new opportunities for interdisciplinary collaboration 2Scientists watch as peptides control crystal growth with 'switches, throttles and brakes' 2Scientists watch as peptides control crystal growth with 'switches, throttles and brakes' 3Computational microscope peers into the working ribosome 2Computational microscope peers into the working ribosome 3New e p t 28R 29 BabyCenter 28R 29 Fertility Report Reveals 70 Percent of Moms Want Tighter Regulation on In Vitro Fertilization 52112 1New e p t 28R 29 BabyCenter 28R 29 Fertility Report Reveals 70 Percent of Moms Want Tighter Regulation on In Vitro Fertilization 52112 2New e p t 28R 29 BabyCenter 28R 29 Fertility Report Reveals 70 Percent of Moms Want Tighter Regulation on In Vitro Fertilization 52112 3New e p t 28R 29 BabyCenter 28R 29 Fertility Report Reveals 70 Percent of Moms Want Tighter Regulation on In Vitro Fertilization 52112 4Quest Diagnostics MedPlus Subsidiary Enables New York Clinical Information Exchange 28NYCLIX 29 to Share Meaningful Data and Enhance Patient Care 52108 1Quest Diagnostics MedPlus Subsidiary Enables New York Clinical Information Exchange 28NYCLIX 29 to Share Meaningful Data and Enhance Patient Care 52108 2Quest Diagnostics MedPlus Subsidiary Enables New York Clinical Information Exchange 28NYCLIX 29 to Share Meaningful Data and Enhance Patient Care 52108 3Quest Diagnostics MedPlus Subsidiary Enables New York Clinical Information Exchange 28NYCLIX 29 to Share Meaningful Data and Enhance Patient Care 52108 4NxStage to Report Second Quarter 2009 Financial Results 52105 1NxStage to Report Second Quarter 2009 Financial Results 52105 2
...f Technology for the first time have shown the ear...t leads to the formation of bones, teeth and sea s...ron microscope to capture a three-dimensional imag...s process. The results provide a greater understan...This creates a prospect of better materials and pr...
... . , Montreal, May 14th 2009 - The Canadian pol...as already proved to be effective in preventing ne... the British Medical Journal by a group of resea...eart Disease (MAUDE Unit), the Research Institute ...McGill University, shows that folic acid also decr...
...lies crucial to switch a stem cell,s fate, is not ...versity of Oregon biochemists. They,ve found that ...ic cop that directs which roads daughter cells wil... or membrane, Miranda isn,t," says Kenneth E. Preh...ember of the UO,s Institute of Molecular Biology. ...
Other Biology News:Focus on the formation of bones, teeth and shells 2Folic acid to prevent congenital heart defects 2How an enzyme tells stem cells which way to divide 2
Other biology definitionOther Tagsstingstingstingstingstingstingcapscapscapsprescriptionstacktacktacktacktackarosearose