In the present work, structural changes of starch granules as seen by LM, SEM, TEM, CLSEM under different processing were shown, in relation to a function they were playing in the ready products. Special emphasis was also paid to starch change during different modification processes of the isolated starches for food and non-food uses. The structure of irradiated starches, resistant starch obtained by different methods, starches as encapsulating materials, high pressure treated starches as well as packaging materials were presented.