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US 7,862,845 B2Granted
Process for manufacturing a sweetener and use thereof
AssigneePureCircle Sdn Bhd
InventorsMalsagov Magomet, Tugan Tomov, Timur Somann, Varuzhan H Abelyan
Life of this patent
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Abstract
Highly purified Stevioside and Rebaudioside A were prepared from sweet glycoside extracts obtained from Stevia rebaudiana Bertoni leaves. The resulting sweeteners are suitable as non-calorie, non-cariogenic, non-bitter, non-lingering sweeteners, which may be advantageously applied in foods, beverages, and milk products.
Claims14
A process for producing a sweetener, comprising of the following steps:
- a) drying Stevia rebaudiana leaves;
- b) treating the dried Stevia rebaudiana leaves with water to extract sweet glycosides, wherein a leaves-water mixture is formed;
- c) filtering the leaves-water mixture to obtain an aqueous filtrate;
- d) directly treating the aqueous filtrate with calcium hydroxide or calcium oxide to raise the pH of the aqueous filtrate to about 10;
- e) directly neutralizing the treated aqueous filtrate with trivalent iron chloride;
- and
- f) filtrating the neutralized aqueous filtrate to obtain a filtrated aqueous filtrate, and evaporating the filtrated aqueous filtrate to dryness to obtain purified sweet glycosides.
4 more elements
Dependencies are inferred from the claim text.