Rubia was an economically important source of a red pigment in many regions of Asia, Europe and Africa. The genus name Rubia derives from the Latin ruber meaning "red".
The plant's roots contain an anthracene compound called alizarin that gives its red colour to a textile dye known as Rose madder. It was also used as a colourant, especially for paint, that is referred to as Madder lake. The synthesis of alizarin greatly reduced demand for the natural compound.
I am a Dutch amateurfilmer and homevideo-enthusiast, as well as producer, director, editor of "C'est le Toon". This video-blog is a communication-tool sharing news, documentaries, family videos, interviews, travelogues, visual arts and filmmaking. It also contains tips about and examples of how-to make interesting homevideos, travelogues, ipodsfilms vacationfilms and vodcasts etc. Search the site for worldwide video's and movies! Enjoy.
januari 20, 2017
Madder
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Netherlands
I am a Dutch amateurfilmer and homevideo-enthusiast, as well as producer, director, editor of "C'est le Toon". This video-blog is a communication-tool sharing news, documentaries, family videos, interviews, travelogues, visual arts and filmmaking. It also contains tips about and examples of how-to make interesting homevideos, travelogues, ipodsfilms vacationfilms and vodcasts etc. Search the site for worldwide video's and movies! Enjoy.
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