Process for production of a solid material containing isomaltulose crystals and trehalulose

Patent metadata

Field	Value
Publication number	US-2020048672-A1
Application number	US-201816485554-A
Country	US
Kind code	A1
Filing date	Feb 7, 2018
Priority date	Feb 15, 2017
Publication date	Feb 13, 2020
Grant date	—

Abstract

The present invention provides a process for production of a solid material containing isomaltulose crystals and trehalulose comprising the process steps A) bringing an enzyme complex which is able to catalyse the reaction of sucrose to isomaltulose and trehalulose into contact with a sucrose-containing solution; B) isomerizing at least some of the sucrose to isomaltulose and trehalulose; C) separating off the enzyme complex to give a solution containing isomaltulose, trehalulose and water; D) partial removal of the water by evaporation, while obtaining a concentrated solution with, based on the total solution, a solid content of 75 wt % to 95 wt %, preferably 80 wt % to 93 wt %, particularly preferably 86 wt % to 92 wt %; E) bringing the concentrated solution to a temperature of 30° C. to 63° C., preferably 45° C. to 62° C., even more preferably 55° C. to 60° C., and subsequent induction of isomaltulose crystallisation in this temperature range followed by cooling while obtaining a solid material containing isomaltulose crystals and trehalulose.

First claim

1 . A process for production of a solid material comprising isomaltulose crystals and trehalulose, the process comprising:
A) bringing an enzyme complex which is able to catalyse a reaction of sucrose to isomaltulose and trehalulose into contact with a sucrose-comprising solution; B) isomerizing at least some of the sucrose in the sucrose-comprising solution to isomaltulose and trehalulose; C) separating off the enzyme complex, to obtain a solution comprising isomaltulose, trehalulose and water; D) partially removing the water by evaporation, to obtain a concentrated solution with a solid content of 75 wt % to 95 wt %, based on a total weight of the concentrated solution; E) bringing the concentrated solution to a temperature of 30° C. to 63° C., and subsequent induction of isomaltulose crystallization in this temperature range followed by cooling, to obtain a solid material comprising isomaltulose crystals and trehalulose.

2 . The process of claim 1 , wherein the sucrose-comprising solution of A) has a sucrose concentration of 20-80% by weight, based on a total weight of the sucrose-comprising solution.

3 . The process of claim 1 , wherein the enzyme complex comprises at least one sucrose glucosylmutase of the enzyme class EC 5.4.99.11.

4 . The process of claim 1 , wherein in B), a pH of from 3.5 to 9.5 is present.

5 . The process of claim 1 , wherein in C), the enzyme complex and eventually included solid impurities are separated off from the isomaltulose by filtration, sedimentation or centrifugation.

6 . The process of claim 1 , in which step D) is carried out in a temperature range from 63° C. to 68° C., and in a pressure range from 130 mbar to 160 mbar.

7 . The process of claim 1 , wherein the solid content in D) is 86 wt % to 92 wt % and
in E), the concentrated solution is brought to a temperature of 55° C. to 60° C.

8 . The process of claim 1 , wherein the isomaltulose crystallization is induced by at least one selected from the group consisting of addition of isomaltulose seed crystals, shearing forces, agitation, friction, radiation and ultrasound.

9 . The process of claim 1 , wherein the solid material comprising isomaltulose crystals and trehalulose comprises
isomaltulose in an amount of 70 to 90 wt %, trehalulose in an amount of 5 to 25 wt %, glucose in an amount of 0.1 to 5 wt %, fructose in an amount of 0.1 to 5 wt %, and sucrose in an amount of 0.05 to 4 wt %, relative to a total dry weight of the solid material.

Assignees

• Evonik Degussa Gmbh

Inventors

• Hellmers Frank
• Schlegel-Kachel Sibylle
• Oehrlein Johannes
• Wolter Jan

Classifications

• C12P19/12

  Disaccharides · CPC title

• C12P19/24 Primary

  produced by the action of an isomerase, e.g. fructose · CPC title

• C12P19/44

  Preparation of O-glycosides, e.g. glucosides {(polysaccharides and not substituted disaccharides C12P19/04, C12P19/12)} · CPC title

• C12Y504/99011

  Isomaltulose synthase (5.4.99.11) · CPC title

• C07H3/04

  Disaccharides · CPC title