The structural characteristics and physicochemical properties of
lotus seed resistant starch prepared by different methods were
firstly investigated and compared. The LRS content prepared by
autoclaving, microwave-moisture and ultrasonic-autoclaving
method were 41.89 ± 1.23%, 39.53 ± 0.57% and 56.12 ± 0.32%,
respectively. The structure of LRS3 showed that the molar mass
of GP-LRS3 and UP-LRS3 were mainly distributed in the range
1.0 104–2 104 g/mol and they accounted for 67.69% and
69.26% of total LRS3, while a decrease of MP-LRS3 was observed.