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Methods to treat mixtures of glycosides to obtain one or more of these glycosides in more pure form
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A technology for mixtures and glycosides, applied in the preparation of sugar derivatives, sugar derivatives, sugar derivatives, etc., can solve the problem of not separating pure sweet glycosides
Active Publication Date: 2017-07-28
CARGILL INC
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Problems solved by technology
This procedure isolates a mixture of sweet glycosides but not a single pure sweet glycoside such as rebaudioside A
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Embodiment 1
[0110] Glycosides containing 90%, 95%, 92% of Reb A% respectively and 2.9%, 0.1%, 1.0% of Reb D respectively and 0.07%, 3.0%, 1.4% of Reb B in ethanol crystallized form Each of the three samples of material was mixed with water to form a 13% solids slurry in water. The slurry was stirred overnight at room temperature with a magnetic stir bar and stir plate, stirring well to keep all solid material in suspension. After aging overnight, the material was filtered. The material contained 93%, 95% and 95% Reb A respectively, 2.4%, 0% and 0.6% Reb D respectively and 0.5%, 3.9% and 2.5% Reb B respectively. The material recovered in the solid phase for each treatment was 88%, 98%, and 98%, respectively, of the total material fed to the process. The filtrate was dried in a vacuum oven and contained 73%, 79%, 72% Reb A respectively, 9.6%, 1.8%, 8.4% Reb D respectively and 0.4%, 3.7%, 0.5% Reb B respectively.
Embodiment 2
[0112] Each of the three materials prepared in Example 1 was slurried in absolute ethanol as respective 3.3%, 8.8%, 6.0% solids slurries and stirred overnight at room temperature. After secondary aging, the material was again filtered, washed with 200 proof ethanol and dried. Each filtered product contained 99%, 98%, 98% Reb A respectively, 1.1%, 0.0%, 0.1% Reb D respectively and 0.1%, 1.3%, 1.0% Reb B respectively. The overall yields of material in the solid phase including the procedure of Example 1 were 64%, 83% and 73%, respectively. The filtrate was dried in a vacuum oven and contained 86%, 49%, 74% Reb A respectively, 3.0%, 0.36%, 2.6% Reb D respectively and 1.6%, 19%, 11% Reb B respectively .
Embodiment 3
[0114] Each of the three materials prepared in Example 1 was slurried into 6.9%, 4.9%, and 7.2% solids slurries in 190 proof ethanol and stirred overnight at room temperature. After secondary aging, the material was again filtered, washed with 190 proof ethanol and dried. Each product contained 99%, 99%, 99% Reb A respectively, 0.0%, 0.3%, 0.3% Reb D respectively and 1.0%, 0.1%, 0.6% Reb B respectively. The overall yields of material recovered in the solid phase including the processing of Example 1 were 68%, 45%, 71%, respectively. The filtrate was dried in a vacuum oven and contained 74%, 81%, 73% Reb A respectively, 10%, 2.3%, 9.7% Reb D respectively and 0.5%, 3.5%, 0.5% Reb B respectively .
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Abstract
The present invention provides methods to treat mixtures containing natural rebaudioside A (Reb A), rebaudioside B (Reb B), and rebaudioside D (Reb D), synthetic counterparts of these, and / or derivatives of the natural or synthetic embodiments obtain one or more of these glycosides in more pure form. In many embodiments, the invention can be used to process glycoside mixtures obtained at least in part from natural sources such as the Stevia plant. This allows, for instance, the recovery of a product including Reb A material in more pure form relative to Reb B material or Reb D material. As an alternative or in addition to recovery of the purified Reb A material, a product including Reb B material and / or Reb D material in more pure form relative to Reb A material can be obtained.
Description
[0001] This application is a divisional application of Chinese Patent Application No. 201180015139.8 filed on January 27, 2011, entitled "Method for Treating a Mixture of Glycosides to Obtain a Purer Form of One or More of These Glycosides". [0002] Cross References to Related Applications [0003] This application claims the benefit of U.S. Provisional Application Serial No. 61 / 299,160, entitled "Method of Purifying Rebaudioside B and Rebaudioside D from Rebaudioside A Compositions," filed January 28, 2010, which The provisional application is incorporated herein by reference in its entirety. technical field [0004] The method of the present invention involves the process of resolving a mixture comprising rebaudioside A material, rebaudioside B material and rebaudioside D material into a purer form. For example, a mixture of rebaudioside A, rebaudioside B, and rebaudioside D can be resolved to provide RebA in a more pure form on the one hand, and / or in a more pure form on...
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