Delphinidin Explained

Delphinidin (also delphinidine^{[1] [2]}) is an anthocyanidin, a primary plant pigment, and also an antioxidant.^[3] 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,^[4] and bilberries.^[5]

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.^[6]
• s including Clitoria ternatea ternatins

See also

• Prodelphinidin, a type of condensed tannins

Notes and References

1. Web site: Delphinidine .
2. Web site: Delphinidine .
3. Delphinidin, an Anthocyanidin in Pigmented Fruits and Vegetables, Protects Human HaCaT Keratinocytes and Mouse Skin Against UVB-Mediated Oxidative Stress and Apoptosis . Afaq, F. . Syed, D. N. . Malik, A. . Hadi, N. . Sarfaraz, S. . Kweon, M.-H. . Khan, N. . Zaid, M. A. . Mukhtar, H. . Journal of Investigative Dermatology . 2007 . 127 . 1 . 222–232 . 10.1038/sj.jid.5700510 . 16902416 . free .
4. Ribéreau-Gayon, J. . Ribéreau-Gayon, P. . The Anthocyans and Leucoanthocyans of Grapes and Wines . American Journal of Enology and Viticulture . 1958 . 9 . 1–9 .
5. J Agric Food Chem. Lätti AK, Riihinen KR, Kainulainen PS . Analysis of anthocyanin variation in wild populations of bilberry (Vaccinium myrtillus L.) in Finland . 2008 . 56 . 1. 190–6 . 18072741 . 10.1021/jf072857m.
6. 10962130 . 148 . Antioxidant activity of nasunin, an anthocyanin in eggplant peels . 2000 . Toxicology . 119–23 . Noda Y, Kneyuki T, Igarashi K, Mori A, Packer L . 2–3 . 10.1016/s0300-483x(00)00202-x .