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Method for preparing high-purity polyfructose

A polyfructose, high-purity technology, applied in the field of polyfructose production, can solve the problems of polyfructose polymerization degree dispersion, low purity, etc.

Active Publication Date: 2017-07-14
北京华利康纤生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a method for preparing high-purity polyfructose, so as to solve the problems of dispersed polymerization degree and low purity of polyfructose in the prior art

Method used

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  • Method for preparing high-purity polyfructose
  • Method for preparing high-purity polyfructose
  • Method for preparing high-purity polyfructose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 1kg of chicory, wash, peel, grind and crush it, then add the crushed chicory to the inulin extract, then add 10~1000U / L cellulase and 10~2000U / L pectinase to treat for 1~2h , then heat the extract to 70-90°C, stir for 1-3 hours; filter to obtain the crude inulin extract; treat the crude inulin extract through a mixture of chitosan and diatomaceous earth and a cationic macroporous resin successively, wherein , the mass ratio of chitosan and diatomaceous earth is 1-3:1, the cationic macroporous resin is LSA-40 or LX-100, and the inulin extract is obtained.

[0027] The inulin extract is processed through the first ultrafiltration membrane, the molecular weight cut-off of the first ultrafiltration membrane is greater than 3500; then the retentate is processed through the second ultrafiltration membrane, and the cut-off of the second ultrafiltration membrane is The molecular weight is 2500-3400; then the retentate is treated by nanofiltration membrane, the pore size of...

Embodiment 2

[0028] Example 2: The effect of the added amount of pectinase and cellulase on the extraction efficiency of inulin.

[0029] The operation method is the same as in Example 1, except that the addition of fixed pectinase is 500U / L, and the addition of regulated cellulase is 100U / L, 200U / L, 400U / L, 800U / L, 1000U / L ; The added amount of fixed cellulase is 800U / L, and the added amount of adjusted pectinase is 200U / L, 400U / L, 800U / L, 1200U / L, 1500U / L.

[0030] The addition amount of table 1 cellulase has the influence on the extraction efficiency of inulin

[0031]

[0032] The effect of the amount of pectinase added on the extraction efficiency of inulin in table 2

[0033] Addition of pectinase 200U / L 400U / L 800U / L 1200U / L 1500U / L Inulin Extraction Efficiency 78％ 89％ 92％ 84％ 81％

Embodiment 3

[0034] Example 3: The effect of the mixture of chitosan and diatomaceous earth on the decolorization and debittering efficiency of inulin solution.

[0035] Operation method is the same as embodiment 1, and the mass ratio of chitosan and diatomaceous earth is 1:1, the mass ratio of chitosan and diatomite is 2:1, chitosan and diatomite respectively for this inulin crude extract. The mass ratio of diatomite is 3:1, the mass ratio of chitosan and diatomite is 4:1, and the mass ratio of chitosan and diatomite is 5:1 for decolorization and debittering treatment.

[0036] Then the decolorization effect was determined by detecting the absorbance of the fructo-oligosaccharide mixture at 560nm. The calculating method formula (1) of decolorization rate is shown in:

[0037]

[0038] The results are shown in Table 3 and Table 4.

[0039] The effect of table 3 chitosan and diatomite on the decolorization efficiency of inulin solution

[0040] Transmittance% Decolorizat...

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Abstract

The invention discloses a method for preparing high-purity polyfructose. The method comprises the following steps: (1) pretreating chicory; (2) adding ground chicory into inulin extract, adding cellulose and pectinase to treat for 1-2 hours, heating the extract to 70-90 DEG C, and stirring for 1-3 hours; (3) removing impurities, namely filtering the mixture finally obtained in the step (2) to obtain inulin crude extract; (4) decoloring, debittering and desalting the inulin crude extract to obtain inulin extract; and (5) treating the inulin extract through a first ultrafiltration membrane, treating trapped fluid through a second ultrafiltration membrane, and treating the trapped fluid through a nano-filtration membrane to obtain a refined polyfructose solution, wherein the polymerization degree of more than 95 percent of polyfructose is 21-30. The polyfructose prepared by utilizing the method has the advantages of relatively centralized polymerization degree and high purity.

Description

technical field [0001] The invention belongs to the technical field of polyfructose production, and in particular relates to a preparation method of high-purity polyfructose. Background technique [0002] Chicory is a perennial herb of the genus Chicory in the Asteraceae family, also known as European chicory, coffee grass or French endive. It is native to Europe, West Asia, Central Asia and North America, and is distributed in Northwest my country, North China and Northeast China. Juba has high nutritional value, resistance to diseases and insect pests, high yield, and strong regeneration ability. It is a high-yield and high-quality forage with great development potential. The fleshy root of chicory contains about 70% (dry matter weight) of inulin, which can be used as raw material for the production of inulin, fructooligosaccharide (FOS) and high fructose syrup. [0003] The degree of polymerization of inulin is 2-100. When the degree of polymerization is greater than 20,...

Claims

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Application Information

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IPC IPC(8): C08B37/00
CPCC08B37/0003C08B37/0051
Inventor 杨云黄振华赵国萍王小红
Owner 北京华利康纤生物科技有限公司
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