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US 4,052,226 AGranted
Directed enzymolysis of starch
AssigneeA. E. Staley Manufacturing Company
InventorFrank Verbanac
Life of this patent
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Abstract
Starch hydrolyzates having a desired degree of polymerization are prepared by hydrolyzing derivatized starch esters with amylase and thereafter saponifying the starch ester hydrolyzates to obtain a hydrolyzate product essentially free from substitution. Amylolysis and saccharide distribution of the resultant saponified hydrolyzates are effectively accomplished by pre-selecting a starch ester having the appropriate degree of ester substitution.
Claims14
A method for controlling the saccharide distribution for starch hydrolyzate obtained by the hydrolysis of starch ester with amylase, comprising:
- a. hydrolyzing a starch ester having a degree of ester substitution from about 0.05 to about 0.5 with an amylase to a starch ester hydrolyzate,
- b. saponifying the starch ester groups of the starch ester hydrolyzate to the hydroxyl form and thereby provide a saccharide product essentially free from ester groups, and
- c. recovering the saponfied saccharide product therefrom.
Dependencies are inferred from the claim text.