The characteristics of the different
types of resistant starch reflect the effect of processing, starch
granule characteristics, and gelatinization on the starch structure. Heating starch in the presence of adequate water contributes to starch gelatinization and an increase in digestibility.
With cooling, starches with high amylose contents retrograde
and form crystalline regions not accessible to enzymatic hydrolysis (72). However, swelling and gelatinization of highamylose starches are reduced compared with normal starches
as a result of the higher degree of crystallinity (71)