hollow granule
1.The results showed that its yield was inversely proportional to the concentration of α-amylase and reaction time when the maize starch was hydrolyzed by α-amylase; the granular maize starch was converted into hollow-porous starch by ct-amylase, furthermore it was cracked to the fragments, it was discovered that there were laminated growth ring structure inside starch granular shown on such cracked granular fragments; The crystallinity of maize starch granule can not he increased by the enzyme hydrolysis; the thermodynamic stability of the product was reduced when the hydrolysis time was long.

