Kinetics of starch digestion in sweetpotato flours from Papua New Guinean and Australian cultivars

► Time-course starch digestion in 25 cultivars of sweetpotato were investigated. ► A modified first-order kinetic model suitably describes the monophasic digestograms. ► Starch and non-starch components of the sweetpotato affect digestion. ► The functional properties of the sweetpotato flours correlate with digestion. ► Cultivars with restricted swelling during pasting digested slowly.