Starch is present as intracellular water-insoluble granules of different sizes and shapes, depending on the botanical source (Moon and Giddings, 1993). A significant fraction of the starch granule (about 8%) is damaged during milling. This mechanical damage to the granule structure greatly affects starch properties (Hoseney, 1994). Damaged starch has a higher water absorption capacity and is more susceptible to enzymatic hydrolysis.