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Method for extracting stevioside from whole-plant stevia

A technology of stevioside and stevia, applied in the field of stevioside extraction, can solve the problems of large water consumption for soaking and extraction, increase production cost, large water efflux, and save time and process, save time, and reduce external emissions. row effect

Inactive Publication Date: 2012-02-15
LIAONING QIANQIAN BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drying of fresh stevia leaves is labor-intensive and time-consuming, and the water consumption for soaking and extraction is large, resulting in a large amount of water discharge and increasing production costs

Method used

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  • Method for extracting stevioside from whole-plant stevia
  • Method for extracting stevioside from whole-plant stevia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 60 kg of the whole stevia plant, and use the refining and crushing equipment to refine and crush the whole plant of stevia with 5 times the volume of water to obtain 360 kg of stevia refining and crushing slurry.

[0038] The whole stevia rebaudiana slurry after refining and crushing is pumped into the continuous automatic unloading filter equipment for filtration, and the filtered filter residue is added to 8 times the volume of water, and the first extraction is carried out under ultrasonic and stirring, and the time is 30 Minutes, then squeeze into the continuous automatic unloading filter equipment to filter, obtain the extract of 480kg. Add 8 times the volume of water to the filter residue for the second extraction under ultrasonic and stirring, and then filter with continuous automatic unloading filter equipment, and the second filtrate is used as water for refining and crushing.

[0039] Combine the filtrate that has been refined and crushed with the filtrat...

Embodiment 2

[0048]Get 60kg of whole plant Stevia rebaudiana, and carry out homogeneous crushing of fresh whole plant Stevia rebaudiana together with 10 times the volume of water with pulping and crushing equipment. Obtain the broken slurry of whole plant stevia rebaudiana of 660kg.

[0049] Pump the crushed whole plant Stevia rebaudiana slurry into continuous automatic unloading filter equipment for filtration, add 10 times the volume of water to the filtered filter residue, and perform the first extraction under ultrasonic and stirring for 30 minutes. Squeeze into continuous automatic unloading filtration equipment then and filter, obtain the extract of 600kg. Add 10 times the volume of water to the filter residue for a second extraction under ultrasonic and stirring, and then filter with continuous automatic unloading filter equipment, and use the filtrate obtained from the second filter as water for refining and crushing.

[0050] Combine the filtrate that has been refined and crushed...

Embodiment 3

[0057] Get 60kg of whole plant Stevia rebaudiana, and carry out homogeneous crushing of fresh whole plant Stevia rebaudiana together with 15 times the volume of water with pulping and crushing equipment. Obtain the broken slurry of whole plant stevia rebaudiana of 960kg.

[0058] The crushed whole plant stevia slurry is pumped into the continuous automatic unloading filter equipment for pressure filtration, the filtered filter residue is added to 15 times the volume of water, and the first extraction is carried out under ultrasonic waves and stirring for 30 minutes . Squeeze into continuous automatic unloading filter equipment then and filter, obtain the extract of 900kg. Add 10 times the volume of water to the filter residue for a second extraction under ultrasonic and stirring, and then filter with continuous automatic unloading filter equipment, and the filtrate after the second filter is used as water for refining and crushing.

[0059] Combine the filtrate that has been...

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Abstract

The invention provides a method for extracting stevioside from whole-plant stevia. The method comprises the following steps of: under the water adding condition, crushing the whole-plant stevia with a grinder; filtering with continuous automatic discharging filtration equipment; flocculating a filtrate with a flocculant; and carrying out resin adsorption, desorption, resin desalting and decoloring, concentration and spray drying processes so as to prepare the stevioside product. By using the method, time and processes are saved, long-distance transport links are reduced, raw material cost is reduced, the external emission of wastewater is greatly reduced, and clean production is basically achieved.

Description

technical field [0001] The invention belongs to the technical field related to the extraction of stevioside, in particular to a method for extracting stevioside by using whole stevia rebaudiana. Background technique [0002] Stevia (stevia rebaudiana) is a plant of the genus Stevia in the Compositae family. Stevioside, commonly known as stevioside (Stevioside), is a new type of natural sweetener extracted from the herb Stevia rebaudiana of the Compositae family. Stevia is native to Paraguay, Brazil, Argentina and other places in South America. my country's stevia was successfully introduced and cultivated from Japan in 1976, and stevioside was extracted in 1979. Stevioside is a kind of glycoside mixture composed of steviol, a tetracyclic diterpene compound, linked with different numbers of glycosides. At present, 12 kinds of substances have been found in the research, and eight kinds of substances have been recognized and have been tested in medical toxicology, specifical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/256C07H1/08
Inventor 郭玉孝孟庆华崔岩
Owner LIAONING QIANQIAN BIOLOGICAL TECH
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