US 12,012,639 B2
Processes for isolation and recovery of C5 sugars
Christopher T. Burns, Louisville, KY (US); Jagannadh Satyavolu, Louisville, KY (US); and Michael H. Nantz, Louisville, KY (US)
Assigned to University of Louisville Research Foundation, Inc., Louisville, KY (US)
Appl. No. 16/771,791
Filed by University of Louisville Research Foundation, Inc., Louisville, KY (US)
PCT Filed Dec. 11, 2018, PCT No. PCT/US2018/064974
§ 371(c)(1), (2) Date Jun. 11, 2020,
PCT Pub. No. WO2019/118476, PCT Pub. Date Jun. 20, 2019.
Claims priority of provisional application 62/597,062, filed on Dec. 11, 2017.
Prior Publication US 2021/0071273 A1, Mar. 11, 2021
Int. Cl. C13K 13/00 (2006.01); C12P 19/14 (2006.01)
CPC C13K 13/002 (2013.01) [C12P 19/14 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A process for isolating xylose from an aqueous solution, the process comprising:
providing an aqueous solution comprising the xylose;
combining a boron compound with the aqueous solution to form a boron derivative of the xylose, wherein the combining of the boron compound with the aqueous solution is performed at a pH of about 2.0 to below 4.8;
isolating the boron derivative of the xylose from the aqueous solution as a precipitate;
dissolving the boron derivative of the xylose in a solvent; and
isolating the xylose from the solvent as a precipitate using a boron capture agent.