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Method for extracting stevia A glycoside

An extraction method, a technology of stevia extract, applied in food science, sugar derivatives, food preparation, etc., can solve the problems of low yield, high cost, and long cycle, and achieve high yield, low cost, and short cycle Effect

Active Publication Date: 2009-12-02
安徽威尔曼制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the industrial production of high-purity stevioside A has the following defects: high cost, long cycle, and low output

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh the stevia extract, which can be obtained by alcohol extraction, water extraction or mixed extraction of alcohol extraction and water extraction; then through high-performance liquid chromatography analysis, the content of stevioside A is 78%, and then the stevia extract is added to the concentration Ultrasonic extraction is carried out in 93% ethanol, and then the obtained solid-liquid separation state is filtered to obtain a solid, and then the obtained solid is repeatedly subjected to ethanol ultrasonic extraction twice, and the solid-liquid separation is carried out to filter and collect solid particles. The extraction time is 18 minutes, and then dried under reduced pressure to obtain the product, and then the obtained product is analyzed by high-performance liquid chromatography, the content of stevioside A is 98.5%, the related substances are 1.2%, and the remaining heavy metals, arsenic salts and organic residues are all Compliance.

Embodiment 2

[0017] Weigh the Stevia rebaudiana extract, then draw the wherein stevioside A content is 80% by high performance liquid chromatography analysis, then join the stevia rebaudiana rebaudiana extract into concentration and carry out ultrasonic extraction in the ethanol of 94%, then to the obtained solid-liquid The separated state is filtered to obtain a solid, and then the obtained solid is repeatedly subjected to ethanol ultrasonic extraction twice, and solid-liquid separation is performed to filter and collect solid particles. The time of each ultrasonic extraction is 15 minutes, and then dried under reduced pressure to obtain the product. Then the obtained product is analyzed by high-performance liquid chromatography, the content of stevioside A is 98.8%, the related substances are 1.1%, and the remaining heavy metals, arsenic salts and organic residues all meet the regulations.

Embodiment 3

[0019] Weigh the Stevia rebaudiana extract, then draw the wherein stevioside A content to be 82% by high performance liquid chromatography analysis, then join the stevia rebaudiana rebaudiana extract into concentration and carry out ultrasonic extraction in the ethanol of 93%, then to the obtained solid-liquid The separated state is filtered to obtain a solid, and then the obtained solid is repeatedly subjected to ethanol ultrasonic extraction twice, and solid-liquid separation is performed to filter and collect solid particles. The time of each ultrasonic extraction is 15 minutes, and then dried under reduced pressure to obtain the product. Then the obtained product is analyzed by high-performance liquid chromatography, the content of stevioside A is 98.7%, the related substances are 0.8%, and the remaining heavy metals, arsenic salts and organic residues all meet the regulations.

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Abstract

The invention discloses a method for extracting stevia A glycoside. The method comprises the following steps: weighing stevia extract; then, adding the stevia extract into ethanol solution to carry out ultrasonic extraction; filtering the extract to obtain solid; adding the obtained solid into the ethanol solution for ultrasonic extraction for 1 to 3 times; filtering the extract to obtain solid; and decompressing and drying the solid to obtain the product. The method can better improve the taste of food, has concise and reasonable extraction process, is applicable to industrial production, and has low cost, high yield and non pollution.

Description

technical field [0001] The invention relates to a method for extracting stevioside A. Background technique [0002] Current status: Stevia is native to Paraguay, Brazil, Argentina and other places in South America. Chinese stevia was introduced and cultivated from Japan in 1976-1977, and steviol glycosides were extracted in 1979 and successfully tried in canned food. Stevioside is widely used in economically developed countries and regions such as Japan, South Korea, Europe and the United States. Stevioside is the natural low-calorie sweetener that is closest to the taste of sucrose and has been found in the world and approved by the Ministry of Health and the Ministry of Light Industry. [0003] Stevioside A (Rebaudioside A), white to light yellow crystalline powder or granules, is the best sweet component in stevioside. The quality is very close to sucrose, the taste is fresh and refreshing, without aftertaste, it is a substitute product of stevioside, and it maintains ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/24A23L1/221A23L27/10
Inventor 邵旭何万龙李晓亮牛海军
Owner 安徽威尔曼制药有限公司
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