Purple pigments, catechinopyranocyanidins A and B, in the seed coats of red adzuki beans elute during processing to yield purple-colored an-paste
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Red adzuki beans (Vigna angularis) are primarily used in producing sweet an-paste for use in Japanese confectionery, where the quality of the an-paste is evaluated based on its purple color. Catechinopyranocyanidins A and B (cpcA and cpcB) are seed coat pigmen... ...
