Extracting method for high-content sweet inulin A3

Abstract

The utility model relates to a method for extracting high-content stevioside A3 glycoside, which includes six steps: (1) water extraction: the ground stevia rebaudiana is extracted with water and filtered; (2) resin separation: Filtrate passes through a macroporous resin column and is eluted by alcoholic solvent, stripping liquid passes through a duolite column, and effluent liquid is collected; (3) decolorization: decolourant is added into the effluent liquid, which is then filtered and dried to produce a crude product: (4) crystallization: the crude product is resolved into alcoholic solvent, kept static and filtered to obtain crystals; (5) recrystallization: alcoholic solvent is used again for multiple recrystallizations; (6) washing: the crude product is washed by anhydrous alcoholic solvent and dried to obtain the finished product. The purity of the produced high-content stevioside A3 glycoside is high, so the high-content stevioside A3 glycoside can better improve the taste, the quality and the grade of food, and the method is reasonable and can be easily implemented.

Description

technical field [0001] The invention relates to a method for extracting high-content stevioside, stevioside A 3 Glycoside is the most excellent sweet component of stevioside, which is 300-450 times sweeter than sucrose, and its calorific value is only 1 / 300 of that of sucrose. It tastes fresh and refreshing, and can completely replace sucrose, with lower cost and better taste Well, it is widely used in all sugar fields such as food, beverage, pickled products, daily chemical industry, medicine and health care products. Background technique [0002] Current status: Stevioside, commonly known as Stevioside, is a new type of natural sweetener extracted from the Compositae herb Stevia rebaudiana. It is native to Paraguay, Brazil, Argentina and other places in South America. my country's stevia was successfully introduced and cultivated from Japan from 1976 to 1977, and stevioside was extracted in 1979 and successfully tried in canned food. [0003] Stevioside is a high-sweetne...

AI Technical Summary

Problems solved by technology

[0007] High Content Stevia A 3 Glycosides are deficient: Stevioside and 40%-80% Stevioside A are the only steviol glycosides today 3 Glycoside-related effects research, content ≥ 90% stevioside A 3 No glucoside research so far, even 40%-80% stevioside A 3 Glycoside extraction method has not been reported yet

[0008] In the Chinese patent literature database, the refining methods of stevioside include the refining method of stevioside with patent application number 01127569.3, the high-quality stevioside separation and enrichment process with patent application number 98111347.8, and the patent application number 02135141.4. A method for improving the taste quality of stevioside, they are also mainly reported on the refining of stevioside, for specific stevioside A 3 There is no technical report on the extraction of glycosides, and the purity of the extraction is not high enough, generally around 90%, which also limits its popularization and application

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