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Production method of crystallized water threose

A production method and technology for stachyose, applied in the field of stachyose, can solve the problems of high cost, loss of stachyose, low purity of stachyose, etc., and achieve the effects of easy operation, improved crystallization efficiency, and improved sugar purity

Active Publication Date: 2015-01-07
何龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a production method of crystalline stachyose, which overcomes the low purity of stachyose in the prior art, and requires the use of solvents to extract stachyose to increase the process steps, and easily causes stachyose in the middle. Loss of threose, higher cost defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A production method of crystalline stachyose according to the present invention comprises the following steps: cleaning and slicing herbivorous silkworms (produced in Hebei, harvested in November) and putting them into extraction tanks and extracting them with clear water at 20°C to obtain extracts; then removing impurities and refining , the specific steps of the step of impurity removal and refining are: after boiling the extract, cooling to below 40°C, using CO 2 The gas is fully flushed, and after the extract is turbid, it is neutralized by lime to pH 7.2; the neutralized extract is filtered through a filter to obtain a filtered sugar solution, and then the filtered sugar solution is decolorized through a granular carbon column to obtain a decolorized sugar solution. The decolorization temperature 60°C; the granular carbon column can be regenerated with NaoH solution (concentration 1-2%, temperature 60%, dosage is 1 times the volume of carbon granules, washed with pu...

Embodiment 2

[0039] A method for producing crystalline stachyose in the present invention comprises the following steps: cleaning and slicing herbivorous silkworms (produced in Hebei, harvested in November) and putting them into extraction tanks and extracting them with clear water at 25°C to obtain extracts; then removing impurities and refining , the specific steps of the step of impurity removal and refining are: after boiling the extract, cooling to below 40°C, using CO 2Saturated with gas, after the extract is turbid, it is then neutralized with lime to pH 7; the neutralized extract is passed through a filter to obtain a filtered sugar solution, and then the filtered sugar solution is decolorized through a granular carbon column to obtain a decolorized sugar solution. The decolorization temperature is 50°C . The decolorized sugar liquid is decolorized, deashed and desalted with ion exchange resin, the temperature is controlled at 25°C, and the conductivity is 80us / ㎝; the decolorized, ...

Embodiment 3

[0043] A method for producing crystalline stachyose in the present invention comprises the following steps: cleaning and slicing herbivorous silkworms (produced in Hebei, harvested in November) and putting them into extraction tanks and extracting them with clear water at 25°C to obtain extracts; then removing impurities and refining , the specific steps of the step of impurity removal and refining are: after boiling the extract, cooling to below 40°C, using CO 2 Saturated with gas, after the extract is turbid, it is then neutralized with lime to pH 7; the neutralized extract is passed through a filter to obtain a filtered sugar solution, and then the filtered sugar solution is decolorized through a granular carbon column to obtain a decolorized sugar solution. The decolorization temperature is 50°C . The decolorized sugar liquid is decolorized, deashed and desalted with ion exchange resin, the temperature is controlled at 25°C, and the conductivity is 80us / ㎝; the decolorized,...

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Abstract

The invention relates to a production method of crystallized water threose. The production method comprises the following steps: after cleaning and slicing the raw materials, putting the raw materials into an extraction bath or an extraction tank and extracting with clean water so as to obtain an extraction liquid; after boiling the extraction liquid, cooling to below 40 DEG C, saturating by CO2 gas, and after the extracting liquid is turbid, neutralizing by lime; filtering, decoloring particles by a carbon column and decoloring, deashing and desalting by using ion exchange resin; then, filtering by use of a polysulfone hollow fiber membrane and vacuumizing and evaporating to obtain syrup with the solid content which is greater than or equal to 70%; and purifying water threose by using a dynamic crystallization process or a static crystallization process so as to obtain water threose with the purity over 95%. The production method is simple and easy to operate and high in crystallization efficiency, and the extraction ratio can reach over 70%.

Description

technical field [0001] The invention relates to a production method of crystalline stachyose, belonging to the field of stachyose. Background technique [0002] Stachyose widely exists in leguminous plants, Labiatae plants and Scrophulariaceae plants. It is a naturally occurring tetrasaccharide belonging to the genus Raffinose galactoside non-reducing functional oligosaccharides. It consists of a molecule Glucose, a molecule of fructose, and two molecules of galactose, the structural formula is fructose-glucose-galactose-galactose, the molecular formula is C24H42O2, and the molecular weight is 666.59. Since the glucose group in the molecule and the two galactoses are connected by -D-galactosidic bonds, and the human body lacks α-D-galactosidase, stachyose cannot be digested and absorbed by the human body, and only intestinal A few beneficial bacteria such as Bifidobacterium and Lactobacillus acidophilus in the intestinal tract have an enzyme system for decomposing stachyose...

Claims

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Application Information

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IPC IPC(8): C07H3/06C07H1/06
Inventor 何龙沈昊
Owner 何龙
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