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Plant pigments include a variety of different kinds of molecule, including porphyrins, carotenoids, anthocyanins and betalains. All biological pigments selectively absorb certain wavelengths of light while reflecting others.
Chrysanthemin can be found in the roselle plant (Hibiscus sabdariffa, Malvaceae), different Japanese angiosperms, [2] Rhaponticum (Asteraceae), [3] The fruits of the smooth arrowwood (Viburnum dentatum, Caprifoliaceae) appear blue.
The anthocyanins are subdivided into the sugar-free anthocyanidin aglycones and the anthocyanin glycosides. [ citation needed ] As of 2003, more than 400 anthocyanins had been reported, [ 53 ] while later literature in early 2006, puts the number at more than 550 different anthocyanins.
An extract of maritime pine bark called Pycnogenol bears 65–75 percent proanthocyanidins (procyanidins). [10] Thus a 100 mg serving would contain 65 to 75 mg of proanthocyanidins (procyanidins). Proanthocyanidin glycosides can be isolated from cocoa liquor. [11]
In bryophytes, anthocyanins are usually based on 3-desoxyanthocyanidins located in the cell wall. A new anthocyanidin, riccionidin A, has been isolated from the liverwort Ricciocarpos natans . It could be derived from 6,7,2′,4′,6′-pentahydroxyflavylium, having undergone ring closure of the 6’ -hydroxyl at the 3-position.
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Anthocyanins chemical structure, carbon 3 is represented as the R3 group Luteolinidin chemical structure. The 3-Deoxyanthocyanidins and their glycosides (3-deoxyanthocyanins or 3-DA) are molecules with an anthocyanidins backbone lacking an hydroxyl group at position 3 on the C-ring. This nomenclature is the inverse of that which is commonly ...
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