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Petunidin
Identifiers
CAS number 1429-30-7
PubChem 73386
SMILES
Properties
Molecular formula C16H13O7+ (Cl-)
Molar mass 317.27 g/mol
Exact mass 317.066127317
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Petunidin (Pt) is an O-methylated anthocyanidin. It is a natural organic compound and a particular type of anthocyanidin. It is a dark-red or purple water-soluble pigment found in many redberries including chokeberries (Aronia sp), Saskatoon berries (Amelanchier alnifolia) or different species of grape (for instance Vitis vinifera, or muscadine, Vitis rotundifolia), and also part of the pigments responsible for the petal colors in many flowers. The name of the molecule itself is derived from the word Petunia.

Contents

Biosynthesis

Petunidin could form in the exocarp of fruits from delphinidin, with an anthocyanin flavonoid O-methyltransferase (Catechol-O-methyl transferase) catalyzing the B-ring methylation and S-Adenosyl-L-methyl-3H methionine being the methyl group donor.

Glycosides

Glycoside forms of petunidin are present in grape[1]. These include :

  • petunidine 3-glucoside
  • Petunidin-3-O-(6-p-coumaroyl) glucoside
  • Petunidin-3-O-(6-p-acetyl) glucoside
  • Petunidin-3-O-Galactoside
  • Petunidin-3-Rutinoside

Uses

Petunidin is referred as E165f, E163 and following numbers corresponding to anthocyanins in the food coloring E number list.

See also

References

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