Resistant starch was determined in 70 grain-based foods by modification of
the method commonly used to measure total dietary fiber in North America. T
he modification involved solubilizing resistant starch in dimethyl sulfoxid
e, Total dietary fiber in these products ranged from 0.9 to 18.6%, with res
istant starch representing 0 to 88% of the total fiber values. Many bread p
roducts and breakfast cereals contained over one-third of the total fiber a
s resistant starch.