Dark purple veil

from Wikipedia, the free encyclopedia
Dark purple veil
2008-08-22 Cortinarius violaceus (L.) Gray 18241 crop.jpg

Dark purple veil ( Cortinarius violaceus )

Systematics
Subclass : Agaricomycetidae
Order : Mushroom-like (Agaricales)
Family : Veil relatives (Cortinariaceae)
Genre : Veils ( Cortinarius )
Subgenus : Cortinarius
Type : Dark purple veil
Scientific name
Cortinarius violaceus
( L. ) Gray

The dark purple veil ( Cortinarius violaceus ) is a type of mushroom from the family of veil relatives (Cortinariaceae). Other names for this mushroom are violet veil , midnight mushroom or dark purple thick-footed . This "very beautiful, noble species" was chosen by the Swedish mycologist Elias Magnus Fries in 1857 as a type of the genus Cortinarius created by him .

features

Young specimens of the dark purple veil
Spores of the dark purple veil under the light microscope

The magnificent color and the scent of cedar wood make the dark purple veil a striking mushroom. The deep blue-violet colored fruit bodies often have a “club-like swollen” stem. When the fruiting bodies age, they turn dark brown to black-brown. Often they are covered with rust-brown spore powder. The hemispherical hat, which is more spread out with age, has a diameter of up to 14 cm. While the lamellae are also intensely blue-violet, the flesh of the mushrooms is only slightly gray-violet. Exposure to potassium hydroxide leads to a blood-red color reaction.

distribution

C. violaceus occurs worldwide. Finds from Japan, Central Europe, Australia (also New Guinea and New Zealand) and from North America are described.

meaning

Chemical ingredients

The violet veil stands out because of its dark blue-violet color. Efforts have been made since the 1960s to isolate the blue dye from C. violaceus , which, in view of the great sensitivity and polarity of this compound, was not successful for a long time. Deep purple water extracts turn a dirty brown color within minutes. As it recently turned out, C. violaceus has a higher iron content than all other known mushroom species (7.4 mg / g dry weight). Recent studies show that iron (II) ions form a deep red-violet colored complex with the unusual β-amino acid β-dopa. This fungal “ iron ink ” is known as cortiferrin .

Food value

The dark purple veil is considered edible, at least not poisonous. It's not a good edible mushroom .

Systematics

The worldwide occurring fungus C. violaceus is an "isolated" outsider, the characteristics of which correlate little with other species of the largest agaric genus Cortinarius . The differentiation between a deciduous forest clan C. violaceus and a coniferous forest clan Cortinarius hercynicus (Pers.) Mos. is still the subject of discussion.

biochemistry

In laboratory experiments, the extract of the dark purple veil has shown an inhibiting effect against cysteine ​​proteases .

Individual evidence

  1. ↑ M. Moser, Acta Mycologica. 1968, 4, 199-203.
  2. ^ Franz von Nussbaum, dissertation , University of Munich, 1998.
  3. ^ Franz von Nussbaum, Peter Spiteller, Matthias Rüth, Wolfgang Steglich, Gerhard Wanner, Brandy Gamblin, Lorenzo Stievano and Friedrich E. Wagner, Angew. Chem. 1998, 110, 3483-3485. doi : 10.1002 / (SICI) 1521-3757 (19981204) 110: 23 <3483 :: AID-ANGE3483> 3.0.CO; 2-5
  4. ↑ Mlinarič, A., Kreft, S., Umek, A., Štrukelj, B., Popovič, T. (2000). Cysteine ​​proteinase inhibitors screening of fungal species growing in Slovenia. Acta Pharm., 50, 39-48

Web links

Commons : Dark purple Schleierling ( Cortinarius violaceus )  - Collection of images, videos and audio files