Patent ID: 8937168
Filing Date: 2015-01-20
Classification: A23L,A23V,C07H

Abstract:
1. A method of purifying rebaudioside A from a mixture of glycosides, the method comprising the steps of: (a) providing a glycoside starting composition comprising: about 40-80 wt % rebaudioside A; and one or more of rebaudioside B, rebaudioside C, rebaudioside D, rebaudioside E, rebaudioside F, stevioside, and dulcoside; (b) forming a glycoside solution by dissolving the glycoside starting composition in a solvent comprising; (c) adding an antisolvent to the glycoside solution of step (b) in an amount that is effective to cause at least a portion of the rebaudioside A to crystallize from the glycoside solution in a single crystallization step having a purity of about 90-99 wt % rebaudioside A with a yield of about 60-95 wt % wherein the added antisolvent is different than the lower alcohol and water.