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Prodelphinidin is a name for the polymeric tannins composed of gallocatechin. It yields delphinidin during depolymerisation under oxidative conditions.
Prodelphinidin is a name for the polymeric tannins composed of gallocatechin. It yields delphinidin during depolymerisation under oxidative conditions.
Natural occurrences
Prodelphinidins are one of the two sorts of tannins ingrape
A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus '' Vitis''. Grapes are a non- climacteric type of fruit, generally occurring in clusters.
The cultivation of grapes began perhaps 8,000 years a ...
(the other being procyanidin
Procyanidins are members of the proanthocyanidin (or condensed tannins) class of flavonoids. They are oligomeric compounds, formed from catechin and epicatechin molecules. They yield cyanidin when depolymerized under oxidative conditions.
See th ...
s) being produced especially in the skin of the berry.
Prodelphinidins can be found in '' Cistus salviifolius''. Gallocatechin-(4→8)-catechin ( prodelphinidin B3), gallocatechin-(4→8)-gallocatechin and catechin-(4→8)-gallocatechin can be found in the pomegranate
The pomegranate (''Punica granatum'') is a fruit-bearing deciduous shrub in the family Lythraceae, subfamily Punicoideae, that grows between tall.
The pomegranate was originally described throughout the Mediterranean Basin, Mediterranean re ...
peels. Prodelphinidin B-2 3'-O-gallate can be found in green tea
Green tea is a type of tea that is made from '' Camellia sinensis'' leaves and buds that have not undergone the same withering and oxidation process which is used to make oolong teas and black teas. Green tea originated in China, and since th ...
leaves and prodelphinidin B-2 3,3'-di-O-gallate can be found in ''Myrica rubra
''Myrica rubra'', also called yangmei (; Cantonese: yeung4 mui4; Shanghainese: ), , Chinese bayberry, red bayberry, yumberry, waxberry, or Chinese strawberry (and often mistranslated from Chinese as arbutus) is a subtropical tree grown for its f ...
''.
Particular oligomeric prodelphinidins
Prodelphinidin B3 (gallocatechin-(4α→8)-catechin) and prodelphinidin B9 (epigallocatechin-(4α→8)-catechin) can be isolated inbeer
Beer is one of the oldest and the most widely consumed type of alcoholic drink in the world, and the third most popular drink overall after water and tea. It is produced by the brewing and fermentation of starches, mainly derived from ce ...
. Prodelphinidin C2 (gallocatechin-(4α→8)-gallocatechin-(4α→8)-catechin) can be isolated in malt
Malt is germinated cereal grain that has been dried in a process known as " malting". The grain is made to germinate by soaking in water and is then halted from germinating further by drying with hot air.
Malted grain is used to make beer, w ...
.
The A-type proanthocyanidin epigallocatechin-(2β→7,4β→8)-epicatechin can be found in the leaves of '' Dioclea lasiophylla'',
See also
* Crofelemer, a complex mixture of procyanidins and prodelphinidins from the latex of the South American tree '' Croton lechleri'' (locally called Sangre de Grado or Sangre de Drago)References
{{Condensed tannin Condensed tannins Grape