Patent ID: 7923541
Filing Date: 2011-04-12
Classification: A23L

Abstract:
1. A method for producing purified Rebaudioside A, comprising the steps of: providing a quantity of producing a crude extract by contacting the quantity of filtering the crude extract to obtain a filtrate feed containing Rebaudioside A; adsorbing the Rebaudioside A onto a polar resin by passing the filtrate feed over the polar resin; desorbing the Rebaudioside A from the polar resin by eluting with a second solvent to obtain an eluent containing Rebaudioside A; forming a first concentrated eluent by concentrating the eluent containing Rebaudioside A to a concentration of at least about 65% Rebaudioside A on a dry weight basis; subjecting the first concentrated eluent to a crystallization stage to obtain at least about 85% Rebaudioside A on a dry weight basis; and isolating the Rebaudioside A as crystals or as a solution.