US 12,264,176 B2
Method for producing allulose crystals
Krishnan Viswanathan Iyer, Champaign, IL (US); James Gaddy, Algonquin, IL (US); Jerry Lynn Turner, Shelbyville, IL (US); and Brian Timothy Pohrte, St. Charles, IL (US)
Assigned to Tate & Lyle Solutions USA LLC, Hoffman Estates, IL (US)
Filed by Tate & Lyle Solutions USA LLC, Hoffman Estates, IL (US)
Filed on Dec. 7, 2022, as Appl. No. 18/076,607.
Application 17/036,995 is a division of application No. 16/341,683, abandoned, previously published as PCT/US2017/058753, filed on Oct. 27, 2017.
Application 18/076,607 is a continuation of application No. 17/036,995, filed on Sep. 29, 2020, granted, now 11,548,907.
Claims priority of provisional application 62/414,280, filed on Oct. 28, 2016.
Prior Publication US 2023/0102321 A1, Mar. 30, 2023
Int. Cl. C07H 3/02 (2006.01); A23L 27/30 (2016.01); C07H 1/06 (2006.01)
CPC C07H 3/02 (2013.01) [A23L 27/33 (2016.08); C07H 1/06 (2013.01); C07B 2200/13 (2013.01)] 12 Claims
 
1. A method for producing allulose crystals, wherein the method comprises:
a) cooling and agitating a first admixture containing a first portion of allulose syrup and first allulose crystals and initiating crystallization of allulose dissolved in the first portion of allulose syrup, thereby forming a first massecuite comprising allulose crystals and a first mother liquor containing residual dissolved allulose, the cooling and agitating being continued until a first preselected target yield of allulose crystals is achieved;
b) separating the first massecuite into a first portion and a second portion;
c) combining a second portion of allulose syrup with the second portion of the first massecuite to form a second admixture; and
d) cooling and agitating the second admixture and initiating crystallization of allulose dissolved in the second portion of allulose syrup, thereby forming a second massecuite comprising allulose crystals and a second mother liquor containing residual dissolved allulose, the cooling and agitating being continued until a second preselected target yield of allulose crystals is achieved;
wherein the crystallization is performed in a continuous manner involving stages selected from a plurality of stages.