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alkanna_tinctoria_l._tausch
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alkanna_tinctoria_l._tausch [2014/12/03 19:58] andreas |
alkanna_tinctoria_l._tausch [2014/12/03 20:01] andreas |
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| Perennial herb, up to 30cm high, native to South Europe, West Asia and North Africa, also cultivated there; stem and leaves hairy; leaves simple, alternate, lanceolate; flowers bright blue. | Perennial herb, up to 30cm high, native to South Europe, West Asia and North Africa, also cultivated there; stem and leaves hairy; leaves simple, alternate, lanceolate; flowers bright blue. | ||
| - | "The root produces a fine red colouring material which has been used as a dye in the Mediterranean region since antiquity. The root as a dyestuff is soluble in alcohol, ether, and the oils, but is insoluble in water... In alkali environments the alkanet dye ([[http:// | + | "The root produces a fine red colouring material which has been used as a dye in the Mediterranean region since antiquity. The root as a dyestuff is soluble in alcohol, ether, and the oils, but is insoluble in water... In alkali environments the alkanet dye has a blue color, with the color changing again to crimson on addition of an acid." [[http:// |
| "From the roots of Alkanna tinctoria Tausch, the alkannin esters of the following acids were isolated and identified: β, | "From the roots of Alkanna tinctoria Tausch, the alkannin esters of the following acids were isolated and identified: β, | ||
alkanna_tinctoria_l._tausch.txt · Zuletzt geändert: 2015/06/13 11:36 (Externe Bearbeitung)
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