Purple red alga

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Purple red alga
Porphyridium purpureum1.jpg

Purple red alga ( Porphyridium purpureum )

Systematics
Department : Red algae (Rhodophyceae)
Class : Porphyridiophyceae
Order : Porphyridiales
Family : Porphyridiaceae
Genre : Porphyridium
Type : Purple red alga
Scientific name
Porphyridium purpureum
( Bory ) KMDrew & R.Ross

The purple red alga ( Porphyridium purpureum , syn .: Porphyridium cruentum ) is a type of red alga from the order of the Porphyridiales . It is used industrially and pharmaceutically.

description

The species forms black-red to carmine-red, to plate-sized and membranous-slimy gelatinous deposits . The individual cells are 7 to 12 micrometers in size, spherical to polygonal and brownish-red to red. They each have a large chloroplast with morning star-like rays that widen on the cell wall , and a central pyrenoid . Florideen starch is formed as reserve material , which is accumulated outside the chloroplast. The chloroplasts are colored red by carotenoids and phycoerythrin .

Occurrence

Porphyridium purpureum can be found all year round in shady, damp places near water, in wall corners and at the foot of old trees. It's common.

Systematics

Porphyridium purpureum was in 1797 by Jean Baptiste Bory de Saint-Vincent under the name Phytoconis purpurea firstdescribed . Kathleen Mary Drew-Baker and Robert Ross put the species in the genus Porphyridium in 1965 .

Other synonyms include Porphyridium cruentum (SFGray) Nägeli and Porphyridium marinum Kylin.

use

Porphyridium purpureum is one of the few microalgae species that are already commercially used. Extracts from micro algae of this type, mostly produced in high-quality photobioreactors , are used in algae cosmetics because of their skin-protecting properties.

Individual evidence

  1. ↑ a b c Michael D. Guiry, GM Guiry: Porphyridium purpureum . In: Algaebase. - World-wide electronic publication, National University of Ireland, Galway, accessed July 27, 2018.
  2. ↑ a b Ali Razaghi, Anna Godhe, Eva Albers: Effects of nitrogen on growth and carbohydrate formation in Porphyridium cruentum. Open Life Sciences, Volume 9: Issue 2, pp. 156-162. 2013. doi: 10.2478 / s11535-013-0248-z .
  3. ^ A b Heinz Streble , Dieter Krauter : Life in the water drop. Microflora and microfauna of freshwater. An identification book. Franckh-Kosmos Verlag, Stuttgart 2008, ISBN 978-3-440-11966-2 .
  4. ^ Robert Edward Lee: Phycology . 5th edition, Cambridge University Press, Cambridge 2018, pp. 85 and 105.
  5. ↑ http://inhaltsstoffe-kosmetik.de/porphyridium-cruentum-extract.html

Web links

Commons : Crimson Alga  - Collection of images, videos, and audio files
 Wikispecies: Purple Red Alga  - Species Directory