The same authors stated that anthocyanins
in purple-fleshed potatoes were acylated with caffeic acid. Other
authors have indicated that individual cultivars
of potatoes differ significantly in their relative proportions of
anthocyanidins and anthocyanins, showing a dominance of one or
more acylated glucosides of pelargonidin, cyanidin, peonidin,
delphinidin, petunidin and malvidin.