Prodelphinidin
Prodelphinidin is a name for the polymeric tannins composed of gallocatechin.[1][2][3] It yields delphinidin during depolymerisation under oxidative conditions.
Prodelphinidins can be found in Cistus salviifolius.[4] Gallocatechin-(4→8)-catechin (prodelphinidin B3), gallocatechin-(4→8)-gallocatechin and catechin-(4→8)-gallocatechin can be found in the pomegranate peels.[5] Prodelphinidin B-2 3'-O-gallate can be found in green tea leaves[6]and prodelphinidin B-2 3,3'-di-O-gallate can be found in Myrica rubra.[7]
Prodelphinidin B3 (gallocatechin-(4α→8)-catechin) and prodelphinidin B9 (epigallocatechin-(4α→8)-catechin) can be isolated in beer.[8][9] Prodelphinidin C2 (gallocatechin-(4α→8)-gallocatechin-(4α→8)-catechin) can be isolated in malt.[10]
The A-type proanthocyanidin epigallocatechin-(2β→7,4β→8)-epicatechin can be found in the leaves of Dioclea lasiophylla,[11]
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
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<references />, or <references group="..." />- ↑ Porter, 1992
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Prodelphinidin polymers: definition of structural units. Lai Yeap Foo and Lawrence J. Porter. J. Chem. Soc., Perkin Trans. 1, 1978, pp. 1186-1190, doi:10.1039/P19780001186
- ↑ Flavan-3-ols, prodelphinidins and further polyphenols from Cistus salvifolius. Andreas Danne, Frank Petereit and Adolf Nahrstedt, Phytochemistry, Volume 37, Issue 2, 1994, Pages 533–538, doi:10.1016/0031-9422(94)85094-1
- ↑ Antioxidant properties of gallocatechin and prodelphinidins from pomegranate peel. Plumb G. W., de Pascual-Teresa S, Santos-Buelga C, Rivas-Gonzalo J. C and Williamson G, Redox Report, February 2002, Volume 7, Number 1, pages 41-46, doi:10.1179/135100002125000172
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- ↑ Phenolic Compounds in Beer. Clarissa Gerhäuser and Hans Becker, Beer in Health and Disease Prevention, 2009 (article)
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