Heat–moisture treatment (HMT) involves the treatment of starch at elevated temperatures (90–120◦C) and at restricted moisture content (18–30% moisture w/w) for a certain period of time. Moisture content of starch samples during treatment has been reported to be an important factor affecting the physicochemical properties of the modified products. Water in starch samples acts as a plasticizer, rendering starch polymeric chains more flexible and thus facilitating the rearrangement of amylose/amylopectin unit chains. as evidenced by a greater magnitude of changes in paste viscosity, crystallinity and digestibility of HMT starches with higher moisture content.