Indra Prakash,Grant E. DuBois,George A. King,Mani Upreti
申请号：
US11751627
公开号：
US08791253B2
申请日:
2007.05.21
申请国别(地区):
US
年份:
2014
代理人:
摘要：
Exemplary embodiments of this invention encompass a method for purifying crude rebaudioside A. In particular, this invention relates to a method for purifying crude rebaudioside A compositions comprising purities from approximately 40% to approximately 95% rebaudioside A to obtain a substantially pure rebaudioside A product with a single crystallization step. Resulting polymorph and amorphous forms of rebaudioside A and methods for preparing polymorph and amorphous forms of rebaudioside A from crude rebaudioside A compositions and substantially pure rebaudioside A compositions also are disclosed.
