Difference between revisions of "Rubia tinctorum"
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[[File:Rubia Tinctorum - pub dom.jpg|200px|thumb|right|Rubia tinctorum or or dyer's madder ]] | [[File:Rubia Tinctorum - pub dom.jpg|200px|thumb|right|Rubia tinctorum or or dyer's madder ]] | ||
| − | The rhizome of this plant has traditionally been used to obtain the red pigment alizarin. | + | Also known as common madder or dyer's madder. The rhizome of this plant has traditionally been used to obtain the red pigment alizarin. |
<ref>[http://en.wikipedia.org/wiki/Alizarin Alizarin - Wikipedia]</ref> Alazarin gives its red color to a textile dye known as Rose madder. It was also used as a colorant, especially for paint, that is referred to as Madder lake. | <ref>[http://en.wikipedia.org/wiki/Alizarin Alizarin - Wikipedia]</ref> Alazarin gives its red color to a textile dye known as Rose madder. It was also used as a colorant, especially for paint, that is referred to as Madder lake. | ||
[[File:Alizarin-sample - pub dom.jpg|130px|thumb|left|Rubia tinctorum or dyer's madder ]]<br clear="all" /> | [[File:Alizarin-sample - pub dom.jpg|130px|thumb|left|Rubia tinctorum or dyer's madder ]]<br clear="all" /> | ||
Revision as of 09:28, 16 January 2012
Also known as common madder or dyer's madder. The rhizome of this plant has traditionally been used to obtain the red pigment alizarin. [1] Alazarin gives its red color to a textile dye known as Rose madder. It was also used as a colorant, especially for paint, that is referred to as Madder lake.
Scientific classification
Order: Gentianales
Family: Rubiaceae
Tribe: Rubieae
Genus: Rubia
Species: R. tinctorum
Uses
Pigment
Madder has been cultivated as an agricultural product especially for the red dye alizarin, which was used for coloring textiles and leather. This dye is also known as Rose madder. Madder lake was also used as a pigment for oil paint colors or glue. The dye was extracted from the rhizome of the madder plant. The roots of the 3-year old plants were harvested from September to November. These roots were dried, pulverized and then used as paint powder for cotton dyeing and printing. The disovery of synthesized alizarin in 1868 ended most of the madder cultivation.[2]
Medicinal uses
Madder has been used for the treatment of gall - and kidney stones, menstrual and urinary disorders, jaundice, ulcers, anemia and other diseases. But because madder is said to have carcinogenic and toxic properties, its use is prohibited in Europe.[3]
Gallery
See also
References
External links
- Rubia tinctorum Wikipedia
