US 11,987,828 B2
Method for producing maltitol, with an increased yield
Aline Lecocq, La Madeleine (FR); and Vincent Courbois, Bethune (FR)
Assigned to ROQUETTE FRERES, Lestrem (FR)
Appl. No. 15/742,353
Filed by Roquette Freres, Lestrem (FR)
PCT Filed Jul. 6, 2016, PCT No. PCT/FR2016/051704
§ 371(c)(1), (2) Date Jan. 5, 2018,
PCT Pub. No. WO2017/006049, PCT Pub. Date Jan. 12, 2017.
Claims priority of application No. 1556365 (FR), filed on Jul. 6, 2015.
Prior Publication US 2018/0195098 A1, Jul. 12, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. C12P 19/22 (2006.01); C07H 3/04 (2006.01); C12N 9/26 (2006.01); C12N 9/96 (2006.01)
CPC C12P 19/22 (2013.01) [C07H 3/04 (2013.01); C12N 9/2425 (2013.01); C12N 9/96 (2013.01); C12Y 302/01002 (2013.01)] 15 Claims
 
1. A process for producing maltitol, comprising:
(a) producing a maltose syrup, by hydrolysis of a granular starch, in a first stage of liquefaction of granular starch to form a liquefied starch, followed by a stage of saccharification of the liquefied starch to which an aqueous solution of beta-amylase has been added, to form the maltose syrup A;
(b) optionally subjecting the maltose syrup A to at least one of concentration, of dilution, of enrichment in maltose, and of mixing with another starch hydrolyzate syrup to form maltose syrup B;
(c) hydrogenating one of the maltose syrup A and the maltose syrup B to form an aqueous maltitol composition C;
(d) optionally subjecting the maltitol composition C to at least one of concentration, of dilution, of enrichment in maltitol, of mixing with an additional polyol syrup to form an aqueous maltitol composition D;
(e) optionally forming maltitol powder from one of the maltitol composition C the maltitol composition D;
(f) recovering one of the maltitol composition C, the maltitol composition D or the maltitol powder;
wherein the aqueous solution of beta-amylase has a content by dry weight of beta-amylase of between 5 and 20%, and
wherein the aqueous solution of beta-amylase also comprises:
from 0.05 to 0.5% of potassium sorbate;
from 30 to 50% of glycerol; and
from 0.05 to 0.5% of sodium carbonate,
these percentages being expressed as percentage by dry weight of each constituent relative to a total weight of said aqueous solution,
wherein the saccharification stage is performed in an absence of any active alpha-amylase,
and wherein the beta-amylase aqueous solution has been stored at room temperature for a time of 60 days up to 300 days before introduction into the liquefied starch.