Propelargonidins are a type of

condensed tannin Condensed tannins (proanthocyanidins, polyflavonoid tannins, catechol-type tannins, pyrocatecollic type tannins, non-hydrolyzable tannins or flavolans) are polymers formed by the condensation of flavans. They do not contain sugar residues. They ...

s formed from epiafzelechin. They yield

pelargonidin Pelargonidin is an anthocyanidin, a type of plant pigment producing a characteristic orange color used in food and industrial dyes. Natural occurrences Presence in flowers Pelargonidin can be found in red geraniums (Geraniaceae). It is the p ...

when depolymerized under oxidative conditions. Propelargonidins can be found in the rhizomes of the fern '' Drynaria fortunei'', in buckwheat (''

Fagopyrum esculentum Buckwheat (''Fagopyrum esculentum''), or common buckwheat, is a flowering plant in the knotweed family Polygonaceae cultivated for its grain-like seeds and as a cover crop. The name "buckwheat" is used for several other species, such as '' Fag ...

''), in the edible halophyte '' Mesembryanthemum edule''.

Examples

* Geranins A and B, dimers found in ''Geranium niveum'' * Selligueain A, a trimer found in the rhizome of ''Selliguea feei'' * the trimeric propelargonidin epiafzelechin-(4β→8)-epiafzelechin-(4β→8)-4′-O-methyl-(−)-epigallocatechin can be isolated from the stem bark of '' Heisteria pallida''.A trimeric propelargonidin from stem bark of Heisteria pallida. Verena Dirsch, András Neszmélyia and Hildebert Wagner, Phytochemistry, 3 August 1993, Volume 34, Issue 1, Pages 291–293,

References

Condensed tannins {{polyphenol-stub