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Method for grading inulin

A grading method and inulin technology, applied in the field of separation of natural plant powders, can solve problems such as difficulty in achieving process or functional effects, large span of polymerization degree of inulin, difficulty in realizing industrialized production, etc., to achieve selective utilization, Improve the application value, the effect of short time consumption

Inactive Publication Date: 2012-08-22
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, inulin is mostly used as a mixed component, and it is difficult to achieve the required process or functional effect to a certain extent. Inulin is refined and graded to produce inulin products with a certain degree of polymerization or a specific degree of polymerization. For It is of great significance to realize the selective application of inulin
Publication No. CN1389468A is the method of Chinese patent direct film production of inulin and fructooligosaccharides. The production process of this method is clean, no pollutants are discharged, the product obtained is high in purity, and the production process is easy to control. However, the inulin produced by this method has The range of the degree of polymerization is large, and it is difficult to obtain inulin products with a narrow distribution of the degree of polymerization
The Chinese patent with the publication number CN1634997A is an extraction process of inulin, which provides a process for producing inulin in different ranges of polymerization degrees. The inulin products produced are various, but the degree of polymerization of the inulin produced by the classification method is The distribution is also relatively wide, and it takes a long time and consumes a lot of energy, making it difficult to realize industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Dry Jerusalem artichoke inulin 2.0kg, add 10.0L of 5% ethanol solution, ultrasonicate at 10°C, 50kHz for 20min, and centrifuge the solution at 4000rpm / min for 10min to obtain supernatant Y and precipitate D; supernatant Y is concentrated Spray drying to 40% concentration to obtain dry powder F 1 , the precipitate D was washed with absolute ethanol, and dried at 40°C under a vacuum of 0.09MPa to obtain a dry powder F 2 . The inulin product F that this example makes 1 , F 2 The degrees of polymerization are: 1-41 and 42-44, respectively.

Embodiment 2

[0018] Dry Jerusalem artichoke inulin 2.0kg, add 10.0L of 50% ethanol solution, ultrasonic at 20°C, 50kHz for 15min, and centrifuge the solution at 4000rpm / min for 10min to obtain supernatant Y and precipitate D; supernatant Y is concentrated Spray drying to 40% concentration to obtain dry powder F 1 , the precipitate D was washed with absolute ethanol, and dried at 40°C under a vacuum of 0.09MPa to obtain a dry powder F 2 . The inulin product F that this example makes 1 , F 2 The degrees of polymerization are: 1-24 and 25-44, respectively.

Embodiment 3

[0020] Dry 2.0kg of Jerusalem artichoke inulin, add 6.0L of 95% ethanol solution, ultrasonicate at 30°C, 45kHz for 15min, and centrifuge the solution at 8000rpm / min for 5min to obtain supernatant Y and precipitate D; supernatant Y is concentrated After reaching a concentration of 40%, dry powder F was obtained by spray drying 1 , the precipitate D was washed with absolute ethanol, and dried at 50°C with a vacuum of 0.09MPa to obtain a dry powder F 2 . The inulin product F that this example makes 1 , F 2 The degrees of polymerization are: 1-2 and 3-44, respectively.

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PUM

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Abstract

The invention relates to a method for grading inulin, comprising the following steps: (1) adding alcohol to the inulin to form alcohol solution of the inulin, wherein the concentration of the alcohol in the alcohol solution is 5-95% (V / V), processing the alcohol solution of the inulin with ultrasonic waves at 10-50 DEG C, and centrifuging to obtain a supernatant Y1 and a precipitate D1; (2) continuously adding alcohol to the supernatant Y1 and the precipitate D1, processing and centrifuging the supernatant Y1 and the precipitate D1 like the operation in the step (1), processing the supernatant Y1 to obtain a supernatant Y2 and a precipitate D2, and processing the precipitate D1 to obtain a supernatant Y3 and a precipitate D3; and (3) repeating the operation in sequence to finally obtain asupernatant and a precipitate by grading in each step, and drying the supernatant and the precipitate obtained by grading in each step to obtain the product which is the inulin with a certain range of polymerization degree or specific polymerization degree. The invention has the advantages of high grading efficiency, short time, low power consumption and the like. The produced product which is the inulin with a certain range of polymerization degree has good application values.

Description

technical field [0001] The invention belongs to the field of separation methods of natural plant powder, and relates to the technology of ultrasonic separation and classification with solvents. Background technique [0002] The molecular formula of inulin is GFn, which is a polysaccharide linked by multiple fructose residues Fn through β-2,1 glycosidic bonds and glucose residues at the end. The degree of polymerization is usually 2-60, and the average degree of polymerization is 10. . As a functional fructan, inulin has many physiological functions. It is a growth-promoting factor for bifidobacteria, and it can also be used as a health food ingredient and medicine for preventing and treating tumors, coronary heart disease, colon cancer, and constipation. Inulin also has technological properties suitable for processing, and is widely used in food, medicine, chemical and other fields. [0003] Inulins with different chain lengths are formed according to the degree of polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/18
Inventor 芦明春郑晓丽邹东旭王应妮韩璐
Owner DALIAN POLYTECHNIC UNIVERSITY
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