Procyanidin B1 is a
procyanidin dimer.
It is a molecule with a 4→8 bond (
epicatechin
Catechin is a flavan-3-ol, a type of secondary metabolite providing antioxidant roles in plants. It belongs to the subgroup of polyphenols called flavonoids.
The name of the catechin chemical family derives from '' catechu'', which is the tann ...
-(4β→8)-
catechin
Catechin is a flavan-3-ol, a type of secondary metabolite providing antioxidant roles in plants. It belongs to the subgroup of polyphenols called flavonoids.
The name of the catechin chemical family derives from ''catechu'', which is the tannic ...
). Proanthocyanidin-B1 can be found in ''
Cinnamomum verum
''Cinnamomum verum'' ( synonym ''Cinnamomum zeylanicum'', also called true cinnamon tree or Ceylon cinnamon tree) is a small evergreen tree belonging to the family Lauraceae, native to Sri Lanka. The inner bark of the tree is historically regard ...
'' (Ceylon cinnamon, in the rind, bark or cortex), in ''
Uncaria guianensis
''Uncaria guianensis'', the cat's claw, is a plant species in the genus ''Uncaria'' found in the Amazon biome. Other names for the plant include ''uña de gato'', ''Paraguayo'' and ''vincaria''.
''Uncaria guianensis'' contains many phytochemica ...
'' (cat's claw, in the root), and in ''
Vitis vinifera
''Vitis vinifera'', the common grape vine, is a species of flowering plant, native to the Mediterranean Basin, Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern ...
'' (common grape vine, in the leaf) or in
peach
The peach (''Prunus persica'') is a deciduous tree first domesticated and Agriculture, cultivated in China. It bears edible juicy fruits with various characteristics, most called peaches and the glossy-skinned, non-fuzzy varieties called necta ...
.
Procyanidin B1 can be converted into
procyanidin A1 by radical oxidation using
1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.
[Conversion of procyanidin B-type (catechin dimer) to A-type: evidence for abstraction of C-2 hydrogen in catechin during radical oxidation. Kazunari Kondo, Masaaki Kurihara, Kiyoshi Fukuhara, Takashi Tanaka, Takashi Suzuki, Naoki Miyata and Masatake Toyoda, Tetrahedron Letters, 22 January 2000, Volume 41, Issue 4, Pages 485–488, ]
See also
*
Phenolic content in wine
Phenolic compounds— natural phenol and polyphenols—occur naturally in wine. These include a large group of several hundred chemical compounds that affect the taste, color and mouthfeel of wine. These compounds include phenolic acids, stilb ...
References
Procyanidin dimers
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