violacein

violacein Chemische Eigenschaften,Einsatz,Produktion Methoden

• Beschreibung

  Violacein is a naturally occurring di-indole-pyrrole violet-blue colored pigment that possesses numerous biological functions such as antimicrobial, antiviral, anticancer, antiulcerogenic, anti-leishmanial, and enzyme modulation properties (Narsing et al. 2017). Violacein is biosynthesized by bacterial species such as Chromobacterium violaceum, Collimonas sp., Pseudoalteromonas sp., Pseudomonas aeruginosa, and Janthinobacterium sp. This natural pigment is used extensively in the cosmetic, food, pharmaceutical, and textile industries (Baiano 2014).

• Verwenden

  Violacein is an intense violet pigment formed by the condensation of two tryptophan units, found in a number of bacteria, notably Chromobacterium violaceum. The regulation of pigment biosynthesis is the chromogenic basis for the use of C. violaceum CV26 for the detection of quorum sensing mediators. Violacein exhibits broad spectrum actvity against bacteria, protozoans (including malaria), viruses and mammalian cell lines. Violacein cell toxicity resembles TNF-α signal transduction.

• Verwenden

  Violacein is tryptpphan-derived pigment produced by environmental bacterial. Violacein inhibits gram-positive pathogens by tearing off cytoplasmic cells as observed in Bacillus subtilis and Staphylococcus aureus cells using fluorescence microscopy.

• Verwenden

  Violacein from Janthinobacterium lividum has been used:
  for cell culture assays
  as a standard to determine the crude violacein concentration in ethanol extracts of D. violaceinigra str. NI28 cultures
  as a standard to identify violacein in the leaf samples of Nicotiana

• Definition

  ChEBI: violacein is a member of the class of hydroxyindoles resulting from the formal oxidative coupling between the 3-position of 1,3-dihydro-2H-indol-2-one and the 3-position of 1,3-dihydro-2H-pyrrol-2-one, which is substituted at the 5 position by a 5-hydroxy-1H-indol-3-yl group, where the newly-formed double bond has E configuration. It is a purple chromobacterial pigment that has antibacterial, antifungal, antiprotozoan, and anticancer properties.

• Allgemeine Beschreibung

  Violacein from Janthinobacterium lividum is used as a colorant for natural and synthetic fabrics. It functions as a respiratory pigment and regulates tryptophan production. Violacein exhibits anti-protozoal activity.

• Biochem/physiol Actions

  Violacein, a violet pigment, is an indole derivative produced by various bacterial strains such as Chromobacterium violaceum, Janthinobacterium lividum, Chromobacterium lividum, and Pseudoalteromonas luteoviolacea. Violacein is a member of a novel class of cytotoxic drugs, which mediate apoptosis. Violacein exhibits antitumoral, antibacterial, antiulcerogenic, antileishmanial, and antiviral activities. Violacein and its β-cyclodextrin complexes trigger apoptosis and differentiation in HL60 leukemic cells. Violacein cytotoxicity is preceded by activation of caspase 8, transcription of NF-κB target genes, and p38-MAPK activation resembling TNF-α signal transduction.

violacein Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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