The interaction of gliadins with some anthocyanins (e.g. myrtillin, malvin, keracyanin, callistephin) and anthocyanidins (e.g. delphinidin, pelargonidin, cyanidin) has been analysed in aqueous solution at pH condition of the stomach, in which these compounds are initially metabolized. NMR, FT-IR and UV–Vis spectroscopic methods have been employed to determine the anthocyanin binding mode. The spectroscopic data seem to indicate that anthocyans are located along the polypeptide chains of gliadins in a generical molecular interaction between the two moieties. Our data do not exclude that hydrogen bonding interaction too is operating. Anthocyan–gliadins complexes are very soluble in acidic conditions. The results provide new insights into anthocyan–protein interaction and may have relevance to human health.
P. Mazzaracchio, S. Tozzi, C. Boga, L. Forlani, P. G. Pifferi, G. Barbiroli (2011). Interaction between gliadins and anthocyan derivatives. FOOD CHEMISTRY, 129(3), 1100-1107 [10.1016/j.foodchem.2011.05.084].
Interaction between gliadins and anthocyan derivatives
MAZZARACCHIO, PALMIRA;TOZZI, SILVIA;BOGA, CARLA;FORLANI, LUCIANO;PIFFERI, PIER GIORGIO;BARBIROLI, GIANCARLO
2011
Abstract
The interaction of gliadins with some anthocyanins (e.g. myrtillin, malvin, keracyanin, callistephin) and anthocyanidins (e.g. delphinidin, pelargonidin, cyanidin) has been analysed in aqueous solution at pH condition of the stomach, in which these compounds are initially metabolized. NMR, FT-IR and UV–Vis spectroscopic methods have been employed to determine the anthocyanin binding mode. The spectroscopic data seem to indicate that anthocyans are located along the polypeptide chains of gliadins in a generical molecular interaction between the two moieties. Our data do not exclude that hydrogen bonding interaction too is operating. Anthocyan–gliadins complexes are very soluble in acidic conditions. The results provide new insights into anthocyan–protein interaction and may have relevance to human health.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
