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Delphinidin

Delphinidin (also delphinidine) is an anthocyanidin, a primary plant pigment, and also an antioxidant. Delphinidin gives blue hues to flowers in the genera Viola and Delphinium. It also gives the blue-red color of the grape variety Cabernet Sauvignon, and can be found in cranberries and Concord grapes as well as pomegranates, and bilberries.

Delphinidin, like nearly all other anthocyanidins, is pH-sensitive, i.e. a natural pH indicator, and changes from blue in basic solution to red in acidic solution.

Glycosides

Several glycosides derived from delphinidin are known:

  • Myrtillin (delphinidin-3-O-glucoside) and tulipanin (delphinidin-3-O-rutinoside) can be found in blackcurrant pomace.
  • Violdelphin (delphinidin 3-rutinoside-7-O-(6-O-(4-(6-O-(4-hydroxybenzoyl)-β-D-glucosyl)oxybenzoyl)-β-D-glucoside) is responsible for the purplish-blue flower color of Aconitum chinense.
  • Nasunin (delphinidin-3-(p-coumaroylrutinoside)-5-glucoside) is responsible for the colour of the eggplant fruit's purple skin.
  • Delphinidin ternatins including Clitoria ternatea ternatins

References

References

  1. "Delphinidine".
  2. "Delphinidine".
  3. (2007). "Delphinidin, an Anthocyanidin in Pigmented Fruits and Vegetables, Protects Human HaCaT Keratinocytes and Mouse Skin Against UVB-Mediated Oxidative Stress and Apoptosis". Journal of Investigative Dermatology.
  4. (1958). "The Anthocyans and Leucoanthocyans of Grapes and Wines". American Journal of Enology and Viticulture.
  5. (2008). "Analysis of anthocyanin variation in wild populations of bilberry (Vaccinium myrtillus L.) in Finland". J Agric Food Chem.
  6. {{PubChem. 3083066
  7. Noda Y, Kneyuki T, Igarashi K, Mori A, Packer L. (2000). "Antioxidant activity of nasunin, an anthocyanin in eggplant peels". Toxicology.
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