RSI includes physically
inaccessible starch, such as in grains, seeds or legumes; RSII is
granular starch, non-gelatinized sources, such as green banana or
native potato; RSIII is indigestible retrograded starch that is formed
upon retrogradation after gelatinization; RSIV is chemically modi-
fied starch, such as hydroxypropyl starch and cross linking starch.
Among four types, RSIII seems to be attractive because of its
polymorphic crystallinity and survives most food-processing conditions
as well as preserving its nutritional characteristics (Sievert,
Czuchajowska, & Pomeranz, 1991)