A preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana

A technology of stevioside and stevia, which is applied in the field of extracting stevioside by steam explosion treatment of stevia and the preparation of fermented feed, can solve the problems of inapplicable stevioside extraction and quality assurance, product quality and yield impact, and product purity Not high problems, to achieve the effect of reducing internal diffusion resistance, reducing ash content of products, and increasing diffusion rate

Active Publication Date: 2021-05-25
SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are following problems in this technology: 1) when raw material is broken, labor intensity is big, and the dust that produces has influenced environment
2) Chemicals are added to flocculation, which has a certain impact on product quality and yield
3) The macroporous resin adsorption section produces a large amount of impurity-containing eluent, which cannot be reused and seriously pollutes the environment; 4) The purity of the obtained product is not high, generally lower than 85%. According to my country's stevioside quality standard (GB8270 -2014, as shown in Table 1), not up to standard
[0009] The method of the above-mentioned patent is processed before the steam explosion and is specially used for the production of feed, which is not suitable for the extraction and quality assurance of steviol glycosides

Method used

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  • A preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana
  • A preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana
  • A preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana

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Experimental program
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Effect test

Embodiment 1

[0032]After cleaning the stevia leaves (dry leaves with a water content of about 10wt%), after filtering out the water, enter the steam explosion device for steam explosion, the steam explosion conditions are temperature 150°C, pressure 1.6MPa; the washing water for cleaning the stevia leaves Reuse after settling. The steam-exploded stevia leaves are diluted with water to a concentration of 20wt% while entering the high-consistency mill for thawing. The decomposed slurry enters the continuous countercurrent extractor, and the high-consistency mill decompressed slurry is extracted with 10 times the quality of water in the countercurrent extractor, and finally the stevia rebaudiana leaf residue is squeezed to a water content of 50% for later use, to obtain Extract and leaf residue; the extract passes through the first-stage ultrafiltration membrane with a pore size of 10,000 to remove protein and other soluble impurities and smaller particles.

[0033] The permeate enters the s...

Embodiment 2

[0036] Stevia leaves after cleaning (water content is the dry leaf of about 10wt%), after filtering out moisture, enter steam explosion device and carry out steam explosion, and steam explosion condition is temperature 140 ℃, pressure 1.4MPa; Clean the washing water of stevia leaf through Reuse after settling. The steam-exploded stevia leaves are diluted with water to a concentration of 20 wt% while entering the high-consistency mill for thawing. The decomposed slurry enters the continuous countercurrent extractor, and the high-consistency mill decompressed slurry is extracted with 10 times the quality of water in the countercurrent extractor, and finally the stevia leaf residue is squeezed to a water content of 50wt% for subsequent use. The extract and leaf residue are obtained; the extract passes through the first-stage ultrafiltration membrane with a pore size of 10,000 to remove protein and other soluble impurities and smaller particles.

[0037] The permeate enters the s...

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Abstract

The invention belongs to the field of plant extraction, and specifically relates to a process for extracting stevioside by steam explosion treatment of stevia rebaudiana. The steps of the process are: 1) After cleaning the leaves of Stevia rebaudiana and filtering the surface moisture, put them into the steam explosion device for steam explosion. The steam explosion conditions are: temperature 130-180°C, pressure 1.4-2.0MPa; The steam-exploded stevia leaves are decomposed by replenishing water through a high-consistency mill; 3) The slurry decomposed in step 2) is put into a continuous countercurrent extractor to extract stevioside, and then the stevia leaf residue is squeezed dry with a squeezer When the water content is 50wt%, the extract and leaf residue are obtained; 4) The extract is treated with two-stage ultrafiltration membrane, then desalted and pigmented by ion exchange resin, and finally concentrated to 30wt% by nanofiltration membrane before spraying Dry to obtain the finished steviol glycoside. The method can fundamentally solve the influence of the dense structure of stevia leaf cell wall on the dissolution of active ingredients, and can improve the dissolution efficiency of stevioside extract.

Description

technical field [0001] The invention belongs to the technical field of plant extraction, in particular to a preparation process for extracting stevioside and fermented feed through steam explosion treatment of stevia rebaudiana. Background technique [0002] Stevioside is a low-calorie, high-sweet natural sweetener with a wide range of applications in the market. It is used in beverages, cakes, beer, puffed food, etc. It is the third sweetener with development value besides sugarcane and beet sugar. Stevioside is a mixture extracted from the dry leaves of the Compositae herb Stevia rebaudiana, mainly containing 8 kinds of diterpene glycosides. Stevioside is a natural sweetener that can replace sucrose. Its biggest feature is high sweetness, low calorie, safety and non-toxicity. Its sweetness is similar to xylitol, and it is gradually being favored by sugar Market welcome. [0003] Stevia rebaudiana leaf extract, stevioside, mostly exists in the vacuoles of plant cells. As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/256C07H1/08A23K10/37A23K10/12
CPCA23K10/12A23K10/37C07H1/08C07H15/256Y02P60/87
Inventor 唐印郭志刚雷林刘朝慧李旭初李刚王明权
Owner SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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