A kind of modification method of guar polysaccharide gum

A guar polysaccharide and modification technology, which is applied in the field of modification of guar polysaccharide gum, can solve the problems of turbidity of polysaccharide gum aqueous solution, well plugging by fracturing fluid, affecting application, etc., and achieves reduction of water-insoluble matter content and good compatibility. , the effect of less water consumption

Active Publication Date: 2016-04-27
BEIJING FORESTRY UNIVERSITY
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AI Technical Summary

Problems solved by technology

The high content of water-insoluble substances will lead to the turbidity of polysaccharide glue aqueous solution, which will affect its application in food, printing and dyeing and daily chemical industries. Excessively high water-insoluble substance content will also easily cause well plugging by fracturing fluid during oil fracturing.

Method used

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  • A kind of modification method of guar polysaccharide gum

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Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 protease treatment guar polysaccharide gum

[0023] according to figure 1 The process flow diagram of the modification method of guar polysaccharide gum shown, the guar polysaccharide gum is modified.

[0024] 1. Add the guar polysaccharide film with a water insoluble content of 24.8% to the protease aqueous solution for hydration treatment for 30 minutes, the solid-liquid ratio is 1:1.1, and the protease dosage is 30U / g.

[0025] 2. After hydration, extrude the fully swollen film into a snowflake shape on a three-roll machine, and transfer the extruded guar polysaccharide gum into a homogeneous reactor for 6 hours at a temperature of 50°C.

[0026] 3. After the reaction is finished, carry out inactivation treatment in a sterilizing pot, the inactivation temperature is 121° C., and the time is 20 minutes.

[0027] 4. After the inactivation is completed, dry the protease-treated guar polysaccharide gum in an oven at 60° C. for 3 hours.

[0028] 5. The wat...

Embodiment 2

[0029] Embodiment 2 protease treatment guar polysaccharide gum

[0030] The difference between this embodiment and embodiment 1 is only: the dosage of protease is 50U / g;

[0031] After protease treatment, the water-insoluble content of the guar polysaccharide gum was detected, and the result was 17.7%.

Embodiment 3

[0032] Embodiment 3 protease treatment guar polysaccharide gum

[0033] The difference between this embodiment and embodiment 1 is only: the amount of protease is 100U / g;

[0034] After protease treatment, the water-insoluble content of guar polysaccharide gum was detected, and the result was 16.8%.

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Abstract

The invention provides a modification method of guar polysaccharide gum. According to the modification method, a guar polysaccharide gum sheet is sequentially modified by proteinase and mannase to obviously lower the water-insoluble content in the guar polysaccharide gum. The enzyme-process modification is performed in the polysaccharide micro water imbibition process, and avoids the characteristic of high viscosity of the polysaccharide gum; and the modification process is simple and efficient, is easy to implement, and has favorable compatibility with the existing polysaccharide gum production technique.

Description

technical field [0001] The invention relates to a modification method of guar polysaccharide gum. Background technique [0002] Guar polysaccharide gum is the main type of gum currently used in industry. It is a natural galactomannan gum produced in India, Pakistan and other places. Guar polysaccharide gum is extracted from the endosperm of guar bean seeds, and its main component is linear galactomannan, with D-mannose as the main chain connected by β-1,4 glycosidic bonds, and the side chain consists of D-galactose is connected to some D-mannose units on the main chain through α-1,6 glycosidic bonds. Because guar polysaccharide gum has the characteristics of high viscosity in low-concentration aqueous solution, it is widely used as a thickener, stabilizer, adhesive, etc., and is used in food and medicine, petroleum drilling, textile printing and dyeing, daily chemical ceramics, papermaking and other industries. [0003] But the guar polycan gum that traditional method prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 蒋建新于海龙朱莉伟孙达峰段久芳
Owner BEIJING FORESTRY UNIVERSITY
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