Procyanidin B5 is a B type proanthocyanidin. Procyanidin B5 is an

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 tanni ...

-(4β → 6)-epicatechin dimer.

Natural occurrences

It can be found in grape seeds,Procyanidin dimers and trimers from grape seeds. Jorge M. Ricardo da Silva, Jacques Rigaud, Véronique Cheynier, Annie Cheminat and Michel Moutounet, Phytochemistry, Volume 30, Issue 4, 1991, Pages 1259-1264
/ref> in '' Hibiscus cannabinus'' (kenaf) root and bark, and in black chokeberries (''

Aronia melanocarpa ''Aronia melanocarpa'', called the black chokeberry, is a species of shrubs in the rose family native to eastern North America, ranging from Canada to the central United States, from Newfoundland west to Ontario and Minnesota, south as far as ...

''). ; Presence in food It is found in cocoa beans and chocolate.Rapid Reversed Phase Ultra-Performance Liquid Chromatography Analysis of the Major Cocoa Polyphenols and Inter-relationships of Their Concentrations in Chocolate. Karen A. Cooper, Esther Campos-Gimenez, Diego Jimenez-Alvarez, Kornel Nagy, Jennifer L. Donovan and Gary Williamson, J. Agric. Food Chem., 2007, 55, pages 2841−2847,

References

Procyanidin dimers Chocolate {{Aromatic-stub