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Rapid dissolution method of chitosan

A chitosan, rapid technology, applied in the field of chitosan treatment, can solve the problems of final product quality impact, high process conditions, complex dissolution methods, etc., to promote the scope and amount of use, reduce degradation, rapid dissolution The effect of the method

Active Publication Date: 2018-08-21
SHANDONG INST OF COMMERCE & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The main problems of these methods in the above-mentioned documents: one, the dissolution method is complex, takes a long time, and requires high process conditions; two, the solvent used has an impact on the quality of the final product, especially for the application in the food industry, these methods Obviously not very practical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Take 10g of chitosan, put it in a clean, anhydrous beaker, add 6ml of 75% ethanol, stir well to make the chitosan completely wet, then slowly add 1000ml of acetic acid aqueous solution with a mass concentration of 0.5%, while adding While stirring, the chitosan quickly dissolved into a viscous light yellow solution without any lump formation.

[0033] From the beginning of adding the acid solution to the end of the addition, the dissolution time is only 1.5min.

Embodiment 2

[0035] Take 10g of chitosan, put it in a clean, dry and anhydrous beaker, add 6ml of absolute ethanol, stir well to make the chitosan completely wet, and then slowly add 1000ml of lactic acid solution with a mass concentration of 1%, while adding While stirring, the chitosan quickly dissolved into a viscous light yellow solution without any lump formation.

[0036] Begin timing from adding acid, its dissolution time is only 2.05min.

Embodiment 3

[0038] Take 10g of chitosan, put it in a clean, dry and anhydrous beaker, add 6ml of 90% ethanol, stir well to make the chitosan completely wet, then slowly add 1000ml of citric acid solution with a mass concentration of 1%, Stirring while adding, the chitosan dissolves quickly into a viscous light yellow solution without any lump formation.

[0039] From the beginning of adding the acid solution to the end of the addition, the dissolution time is only 2.0min.

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PUM

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Abstract

The invention belongs to the technical field of chitosan treatment, and particularly relates to a chitosan rapid dissolving method. The method comprises the steps of 1, placing chitosan in a container; 2, completely wetting the chitosan with an organic solvent; 3, adding an acid solution to the wetted chitosan obtained in the step 2 with stirring till the chitosan is dissolved completely. By the adoption of the method, time and labor are saved in the chitosan dissolving process, and the problem that chitosan is hard to use is solved fundamentally. By the adoption of the simple chitosan rapid dissolving method, the application range of chitosan can be greatly widened, and the usage amount of chitosan can be greatly increased. The method has a practical application value and great application and popularization significance.

Description

technical field [0001] The invention belongs to the technical field of chitosan treatment, and in particular relates to a rapid dissolving method of chitosan. Background technique [0002] Chitosan (chitosan, CTS) is the product of chitin (chitin) after deacetylation treatment, that is, deacetylated chitin, scientific name polyglucosamine, also known as soluble chitin, chemical name is (1,4) poly -2-Amino-2-deoxy-β-D-glucan, also known as chitosan, is a linear polymer connected by N-acetyl-D-glucosamine monomers through β-1,4-glucosidic bonds compound. [0003] Transparent flake or powder solid, tasteless, odorless, non-toxic, pure chitosan slightly pearly luster. Chitosan has free amino groups in its molecule and is a cationic polymer that can be dissolved in mineral acid, organic acid and weak acid dilute solution. Due to different preparation process conditions and requirements, the degree of deacetylation ranges from 60% to 100%. Degree of deacetylation and average m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/11C08L5/08
Inventor 王树庆范维江潘洪民刘秀华
Owner SHANDONG INST OF COMMERCE & TECH