CHEBI:90299 - orcein

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ChEBI Name orcein
ChEBI ID CHEBI:90299
Definition A variable mixture of several compounds isolated from lichens, the eight most abundant being α-aminoorcein, α-hydroxyorcein, β-aminoorcein, γ-aminoorcein, β-hydroxyorcein, γ-hydroxyorcein, β-aminoorceimine and β-aminoorceimine (all are phenoxazine-based). It is used for the demonstration of elastic fibres as well as to stain the rough endoplasmic reticulum of hepatitis B infected liver cells.
Stars This entity has been manually annotated by the ChEBI Team.
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Roles Classification
Biological Role(s): food colouring
A food additive that imparts colour to food. In European countries, E-numbers for permitted food colours are from E 100 to E 199, divided into yellows (E 100-109), oranges (E 110-119), reds (E 120-129), blues and violets (E 130-139), greens (E 140-149), browns and blacks (E 150-159), and others (E 160-199).
plant metabolite
Any eukaryotic metabolite produced during a metabolic reaction in plants, the kingdom that include flowering plants, conifers and other gymnosperms.
Application(s): food colouring
A food additive that imparts colour to food. In European countries, E-numbers for permitted food colours are from E 100 to E 199, divided into yellows (E 100-109), oranges (E 110-119), reds (E 120-129), blues and violets (E 130-139), greens (E 140-149), browns and blacks (E 150-159), and others (E 160-199).
histological dye
A dye used in microscopic or electron microscopic examination of cells and tissues to give contrast and to highlight particular features of interest, such as nuclei and cytoplasm.
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ChEBI Ontology
Outgoing orcein (CHEBI:90299) has part α-aminoorcein (CHEBI:90306)
orcein (CHEBI:90299) has part α-hydroxyorcein (CHEBI:90308)
orcein (CHEBI:90299) has part β-aminoorceimine (CHEBI:90314)
orcein (CHEBI:90299) has part β-aminoorcein (CHEBI:90311)
orcein (CHEBI:90299) has part β-hydroxyorcein (CHEBI:90309)
orcein (CHEBI:90299) has part γ-aminoorceimine (CHEBI:90316)
orcein (CHEBI:90299) has part γ-aminoorcein (CHEBI:90312)
orcein (CHEBI:90299) has part γ-hydroxyorcein (CHEBI:90313)
orcein (CHEBI:90299) has role food colouring (CHEBI:77182)
orcein (CHEBI:90299) has role histological dye (CHEBI:77178)
orcein (CHEBI:90299) has role plant metabolite (CHEBI:76924)
orcein (CHEBI:90299) is a mixture (CHEBI:60004)
Synonym Source
C.I. Natural Red 28 ChEBI
Manual Xref Database
Orcein Wikipedia
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Last Modified
11 November 2015