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Micro water solid phase modifying method of gleditsia sinensis polysaccharide gum

A technology of polysaccharide gum and acacia, which is applied in the field of micro-water solid-phase modification of acacia polysaccharide gum, can solve the problems of few research reports on the modification of acacia polysaccharide gum, achieve simple and efficient modification process, reduce power consumption, and contact The effect of surface increase

Active Publication Date: 2014-12-17
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The research on plant polysaccharides at home and abroad mainly focuses on the theoretical and applied research work on the structure characterization and modification of general low-molecular-weight plant polysaccharides and high-molecular polysaccharides such as starch and cellulose. However, there are very few reports on the modification of acacia polysaccharides.

Method used

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  • Micro water solid phase modifying method of gleditsia sinensis polysaccharide gum
  • Micro water solid phase modifying method of gleditsia sinensis polysaccharide gum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] according to figure 1 As shown in the process flow chart, the saponins polysaccharide film is hydrated with an aqueous hydrogen peroxide solution with a pH of 11 (the concentration of hydrogen peroxide in water is 3%), and the mass ratio of solid to liquid is 1:1. After hydration for 15 minutes, the fully swollen film was calendered on a three-roll machine to form broken flakes into snowflakes, and then subjected to extrusion texture treatment in a screw extrusion reactor for 1 hour at a temperature of 60°C. After the reaction, spray and add 10% hydrochloric acid solution to adjust the pH value to neutral, then carry out air-drying, grinding and pulverizing coupled with air-flow classification, and obtain the modified product of acacia polysaccharide gum passing through a 120-mesh sieve. The measured molecular weight of the modified product is 1.92 million, the carboxyl substitution degree is 0.07, and the water-insoluble content is 8.7%.

Embodiment 2

[0034] according to figure 1 As shown in the process flow chart, the saponins polysaccharide film is hydrated with an aqueous hydrogen peroxide solution with a pH of 11 (the concentration of hydrogen peroxide in water is 10%), and the mass ratio of solid to liquid is 1:1. After hydration for 15 minutes, the fully swollen film was calendered on a three-roll machine to form broken flakes into snowflakes, and then subjected to extrusion texture treatment in a screw extrusion reactor for 1 hour at a temperature of 60°C. After the reaction, spray and add 10% hydrochloric acid solution to adjust the pH value to neutral, then carry out air-drying, grinding and pulverizing coupled with air-flow classification, and obtain the modified product of acacia polysaccharide gum passing through a 120-mesh sieve. The measured molecular weight of the modified product is 89,000, the carboxyl substitution degree is 0.45, and the water-insoluble content is 8.5%.

[0035] The saponin locust polysac...

Embodiment 3

[0037] according to figure 1 As shown in the process flow chart, the saponins polysaccharide film is hydrated with an aqueous hydrogen peroxide solution with a pH of 11 (the concentration of hydrogen peroxide in water is 15%), and the mass ratio of solid to liquid is 1:1. After hydration for 15 minutes, the fully swollen film was calendered on a three-roll machine to form broken flakes into snowflakes, and then subjected to extrusion texture treatment in a screw extrusion reactor for 1 hour at a temperature of 60°C. After the reaction, spray and add 10% hydrochloric acid solution to adjust the pH value to neutral, then carry out air-drying, grinding and pulverizing coupled with air-flow classification, and obtain the modified product of acacia polysaccharide gum passing through a 120-mesh sieve. The measured molecular weight of the modified product is 70,000, the carboxyl substitution degree is 0.54, and the water-insoluble content is 8.5%.

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Abstract

The invention relates to the field of fine chemical engineering of biomass and particularly provides a micro water solid phase modifying method of gleditsia sinensis polysaccharide gum. The method comprises the following steps: firstly, hydrating a gleditsia sinensis polysaccharide gum sheet in an alkaline aqueous solution containing hydrogen peroxide; and then, obtaining a gleditsia sinensis polysaccharide gum modified product by virtue of extruding, drying and powdering processes, wherein the additional value of the gleditsia sinensis polysaccharide gum modified product is greatly improved.

Description

technical field [0001] The invention relates to the field of biomass fine chemical industry, in particular to a micro-aqueous solid-phase modification method of saponins polysaccharide gum. Background technique [0002] Plant polysaccharide gum is a natural polymer composed of mannose, glucose, galactose, arabinose, xylose and other monosaccharides and their corresponding uronic acids in a certain proportion. It has good viscosity and can combine with water to form a colloidal solution. , the molecular weight is between 50,000 and 500,000. Plant polysaccharide gums, especially galactomannan, have the functional properties of general polysaccharides, and are widely used as thickeners, stabilizers, gelling agents, flocculants, etc. Drilling, pulp and paper, military explosives and other industries. my country's current annual import volume is about 100,000 tons, and the demand for plant polysaccharide gum is increasing by more than 10% annually. [0003] Honey locust (Gledi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 蒋建新章伟岸周自圆孙达峰朱莉伟
Owner BEIJING FORESTRY UNIVERSITY
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