Acids break the glycosidic linkages of α-glucan chains, altering the properties and structure of native starch. The amorphous region in granules is much more susceptible to acid hydrolysis than the crystalline part (Hoover, 2000). Starches from three millet genotypes were subjected to acid hydrolysis (HCl, 2.2 M) at 25 °C for 20 days. Hydrolysis extent up to 88.2%was noted (Hoover et al., 1996). The difference in the hydrolysis degree among the genotypes reflects the difference in the architecture of the granules and the physical associations and interactions