Procyanidin A2 is an
A type proanthocyanidin.
It is found in
avocado
The avocado (''Persea americana'') is a medium-sized, evergreen tree in the laurel family ( Lauraceae). It is native to the Americas and was first domesticated by Mesoamerican tribes more than 5,000 years ago. Then as now it was prized for ...
,
chestnut,
cranberry
Cranberries are a group of evergreen dwarf shrubs or trailing vines in the subgenus ''Oxycoccus'' of the genus '' Vaccinium''. In Britain, cranberry may refer to the native species '' Vaccinium oxycoccos'', while in North America, cranberry ...
juice concentrate,
lychee
Lychee (US: ; UK: ; ''Litchi chinensis''; ) is a monotypic taxon and the sole member in the genus ''Litchi'' in the soapberry family, ''Sapindaceae''.
It is a tropical tree native to Southeast and Southwest China (the Guangdong, Fujian, Yun ...
fruit pericarp,
peanut
The peanut (''Arachis hypogaea''), also known as the groundnut, goober (US), pindar (US) or monkey nut (UK), is a legume crop grown mainly for its edible seeds. It is widely grown in the tropics and subtropics, important to both small and ...
skins,
Cinchona cortex,
cinnamon cortex, ''
Urvillea ulmaceae'',
and ''
Ecdysanthera utilis''.
Synthesis
Procyanidin B2 can be converted into procyanidin A2 by radical oxidation using
1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.
References
*
Procyanidin dimers
{{Aromatic-stub