HPLC–DAD–ESI/MSn was used to establish the phenolic
profile. Phenolic monomers such as flavonol O-glycosilated (quercetin and kaempferol), quinic acid
and caffeic acid conjugates were characterized using the electrospray source in the negative mode; while
positive mode was employed to detect glycosylated anthocyanins (cyanidin, delphinin and petunidin)