Method to make steviol glycoside isomers
AssigneePepsiCo, Inc.
InventorThomas Lee
Life of this patent
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Abstract
Steviol glycoside isomers are provided having the formula: wherein R1 may be 1-β-D-glucopyranosyl or 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, and R2 may be hydrogen, 1-β-D-glucopyranosyl, 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2,3-bis(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, or 2-(1-β-D-xylopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl. Methods for making steviol glycoside isomers are also disclosed. These compounds may be present in food and beverage products as non-nutritive sweeteners.
Claims20
A method for preparing a compound of formula II:
- wherein R1 is 1-β-D-glucopyranosyl, or 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, and R2 is hydrogen, 1-β-D-glucopyranosyl, 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2,3-bis(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, or 2-(1-β-D-xylopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, comprising the steps of:
- providing an acidic aqueous solution comprising a compound of formula I:
- wherein R1 is 1-β-D-glucopyranosyl or 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, and R2 is hydrogen, 1-β-D-glucopyranosyl, 2-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2,3-bis(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-1-β-D-glucopyranosyl, 2-(1-α-L-rhamnopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl, or 2-(1-β-D-xylopyranosyl)-3-(1-β-D-glucopyranosyl)-1-β-D-glucopyranosyl;
- and
- heating the solution to a temperature within the range of 30° C. to 90° C. for a period of time greater than two days.
Dependencies are inferred from the claim text.