High shear process for dextrose production
First Claim
Patent Images
1. A method for producing starch hydrolysate, the method comprising:
- forming a dispersion comprising a hydrolytic solution comprising glucoamylase and an aqueous starch solution utilizing a high shear device, wherein the high shear device comprises at least one rotor and at least one stator separated by a shear gap width in the range of from 0.025 mm to 10.0 mm and wherein the high shear device produces a localized pressure of at least 1000 MPa at the tip of the at least one rotor; and
introducing the dispersion into a reactor from which a product comprising dextrose is removed, wherein the operating temperature within the reactor is maintained at a temperature of less than 160°
C.
1 Assignment
0 Petitions
Accused Products
Abstract
Use of a high shear mechanical device in a process for production of starch hydrolysate by reacting starch with a hydrolytic agent makes possible a decrease in mass transfer limitations, thereby enhancing production of starch hydrolysate. A system for production of starch hydrolysate is also provided in which a reactor is configured to receive the output from a high shear device, which is configured to receive a starch and lysing reagent. The high shear device is configured to generate a fine dispersion or emulsion of lysing.
-
Citations
20 Claims
-
1. A method for producing starch hydrolysate, the method comprising:
-
forming a dispersion comprising a hydrolytic solution comprising glucoamylase and an aqueous starch solution utilizing a high shear device, wherein the high shear device comprises at least one rotor and at least one stator separated by a shear gap width in the range of from 0.025 mm to 10.0 mm and wherein the high shear device produces a localized pressure of at least 1000 MPa at the tip of the at least one rotor; and introducing the dispersion into a reactor from which a product comprising dextrose is removed, wherein the operating temperature within the reactor is maintained at a temperature of less than 160°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for producing starch hydrolysate, the method comprising:
-
forming a liquid-liquid phase dispersion comprising hydrolytic solution comprising glucoamylase and aqueous starch by introducing the hydrolytic solution and aqueous starch into a high shear device operating with a shear rate of at least 20,000 s−
1;
wherein said high shear device comprises at least one rotor and at least one stator with a gap width in the range of from 0.025 mm to 10.0 mm. - View Dependent Claims (13, 15, 16, 17, 18, 19, 20)
-
-
14. A system for the production of starch hydrolysate, the system comprising:
-
a high shear device comprising at least one rotor and at least one stator having a minimum clearance therebetween and configured to produce a dispersion of hydrolytic solution globules in a solution comprising aqueous starch, the dispersion having an average globule diameter of less than 100 nm, wherein said minimum clearance is in the range of from 0.025 mm to 10.0 mm and wherein said high shear device is configured to produce a localized pressure of at least 1000 MPa at the tip of the at least one rotor; a reactor fluidly connected to an outlet of the high shear device and configured to produce a product stream having a DE value of less than about 20, wherein the reactor is operated at a temperature of less than 160°
C.; anda vessel configured to receive the product stream from the reactor, wherein at least a portion of the product stream is reacted with glucoamylase in the vessel.
-
Specification