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--- isatis_tinctoria_l [2016/05/31 16:26]
andreas
+++ isatis_tinctoria_l [2016/05/31 21:41] (aktuell)
andreas
@@ Zeile 3: / Zeile 3: @@
 Bienniel herb, native to Europe, naturalized in Asia, cultivated elsewhere.
-" Isatis tinctoria is a European and probably Asian species very polymorphic in fruit shape, shape and size of auricles of cauline leaves, and the amount of indumentum. It has been cultivated since ancient times as a source of a dark blue dye (woad) obtained by fermenting the leaves and lower portions of the plant. Glabrous forms with oblong fruit and poorly developed or obtuse leaf auricles have been recognized as I. indigotica. By contrast, glabrous or hairy forms with cuneiform or oblong-triangular fruit and well-developed, often acute leaf auricles are called I. tinctoria. However, every conceivable morphological intermediate between the two forms occurs in China, as well as elsewhere in Asia, Europe, and North America, where they are introduced and naturalized.\\
+"Isatis tinctoria is a European and probably Asian species very polymorphic in fruit shape, shape and size of auricles of cauline leaves, and the amount of indumentum. It has been cultivated since ancient times as a source of a dark blue dye (woad) obtained by fermenting the leaves and lower portions of the plant. Glabrous forms with oblong fruit and poorly developed or obtuse leaf auricles have been recognized as I. indigotica. By contrast, glabrous or hairy forms with cuneiform or oblong-triangular fruit and well-developed, often acute leaf auricles are called I. tinctoria. However, every conceivable morphological intermediate between the two forms occurs in China, as well as elsewhere in Asia, Europe, and North America, where they are introduced and naturalized.\\
 The roots and leaves are used for medicinal purposes and a source of dye, and the seed oil is used in industry." \\
 [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200009571]]
@@ Zeile 11: / Zeile 11: @@
 [[http://en.wikipedia.org/wiki/Isatis_tinctoria]]
-"Bǎn lán gēn was very popular especially during the SARS epidemic in China, although an effect against the virus could not be detected." \\
+"The leaves contain the colorless glycoside indican, which is enzymatically cleaved into glucose and indoxyl after harvesting. Indoxyl is oxidized to indigo (fermentation)... \\
+Bǎn lán gēn was very popular especially during the SARS epidemic in China, although an effect against the virus could not be detected." \\
 [[https://de.wikipedia.org/wiki/F%C3%A4rberwaid]]
-"Woad seeds contain as much as 0.23% fresh weight of glucobrassicin but no other indole glucosinolate, while 1-week-old seedlings also contain substantial amounts of neoglucobrassicin and glucobrassicin-1-sulfonate in their shoots whether grown in the light or dark. The sulfonate is not found in roots, and light depresses neoglucobrassicin levels in shoots." \\
+"Woad seeds contain as much as 0.23% fresh weight of [[https://en.wikipedia.org/wiki/Glucobrassicin|glucobrassicin]] but no other indole glucosinolate, while 1-week-old seedlings also contain substantial amounts of neoglucobrassicin and glucobrassicin-1-sulfonate in their shoots whether grown in the light or dark. The sulfonate is not found in roots, and light depresses neoglucobrassicin levels in shoots." \\
 [Distribution and variation of indole glucosinolates in woad (Isatis tinctoria L.)., Elliott, M.C., Stowe, B.B., Plant physiology, Vol.48(4), 1971, 498-503] [[http://www.plantphysiol.org/content/48/4/498.full.pdf]]

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