Patent ID: 7582453

Claim:
A method to control the distribution of the starch sugar's molecular weight in oligosaccharides production, the method comprising: based on weight percentage, blending 1 part dried starch with 2 to 4 parts water to get a starch slurry; mixing the starch slurry with 0.01%-0.03% of CaCl 2 (w/w) based on dried starch; adjusting the pH of the starch slurry to 5-7; based on weight percentage of dried starch, adding 0.03%-0.08% of heat resistant α-amylases to the starch slurry; stirring the starch slurry until it becomes a homogeneous mixture; liquefying the homogeneous mixture by passing the homogeneous mixture through a jet liquefier at a temperature of between 100° C. and 130° C. to form a liquefied starch liquid; transferring the liquid from the jet liquefier to a Laminar-flow tank; controlling the DE value at 8-12 while holding the liquid in the Laminar-flow tank at a temperature of between 100° C. and 130° C. for 20 to 60 minutes; and terminating the activity of said α-amylases once an analysis of an iodine-color reaction indicates the liquid has a glucose content of between 11.4% and 12.2% and a G3 to G5 content of 70% as indicated by a color of reaction of resultant in enzymatic hydrolysis of starch with iodine chemical.