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The dark markings on both birds are due to the black pigment eumelanin. Biological pigments, also known simply as pigments or biochromes, [1] are substances produced by living organisms that have a color resulting from selective color absorption. Biological pigments include plant pigments and flower pigments.
Pages in category "Biological pigments" The following 47 pages are in this category, out of 47 total. This list may not reflect recent changes. A. Anthochlor pigments;
It is a yellow pigment. The structure exhibits atropisomerism, with the two enantiomers having different biochemical properties. [1] Among other applications, it has been tested as a male oral contraceptive in China. In addition to its putative contraceptive properties, gossypol has also long been known to possess antimalarial properties. [2]
Melanin (/ ˈ m ɛ l ə n ɪ n / ⓘ; from Ancient Greek μέλας (mélas) 'black, dark') is a family of biomolecules organized as oligomers or polymers, which among other functions provide the pigments of many organisms. [1] Melanin pigments are produced in a specialized group of cells known as melanocytes.
Ommochrome (or filtering pigment) refers to several biological pigments that occur in the eyes of crustaceans and insects. The eye color is determined by the ommochromes. Ommochromes are also found in the chromatophores of cephalopods, and in spiders. [1] Ommochromes are metabolites of tryptophan, via kynurenine and 3-hydroxykynurenine. They ...
Biliverdin (from the Latin for green bile) is a green tetrapyrrolic bile pigment, and is a product of heme catabolism. [ 1 ] [ 2 ] It is the pigment responsible for a greenish color sometimes seen in bruises .
Crustacyanin is a carotenoprotein biological pigment found in the exoskeleton of lobsters and blue crabs and responsible for their blue colour. [ 1 ] β-Crustacyanin (β-CR), is composed of two stacked astaxanthin carotenoids that absorb at λ = 580–590 nm (2.10–2.14 eV).
The pigment was originally discovered in 1849 by Swiss botanist Carl Nägeli, [3] although the structure remained unsolved until 1993. [4] It is an aromatic indole alkaloid built from two identical condensation products of tryptophan yl- and tyrosy l-derived subunits linked through a carbon-carbon bond. [ 4 ]