Method for preparing chitosan into water-soluble chitosan oligosaccharide

A technology of water-soluble chitosan and chitosan, which is applied in the field of water-soluble chitosan, can solve problems such as easy production of reaction by-products, difficult control of product quality, and influence on product purity, achieving valuable economical and remarkable technology The effect of advanced nature and simple process

Inactive Publication Date: 2015-07-01
殷国铭 +1
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Problems solved by technology

The disadvantage of the chemical degradation method is that it is easy to produce reaction by-products, which will eventually affect the purity of the product, so the product quality is difficult to control and the stability is poor; the enzymatic hydrolysis method uses certain enzymes to specifically crack and change the molecular structure to achieve the purpose of degradation. Since no other reaction by-product...

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  • Method for preparing chitosan into water-soluble chitosan oligosaccharide

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and typical embodiments.

[0011] In the accompanying drawings, based on the method of the present invention, chitosan is prepared into water-soluble chitosan oligosaccharides, the technological process is as follows: using special-grade chitosan as raw material, after rinsing and drying process physical treatment, it is put in advance by net water (H 2 O)80-90% and food grade hydrogen peroxide (H 2 o 2 ) 10-20% by weight in the feed solution prepared by soaking for 1-2 hours; then in the microwave radiation reactor for 5-6 hours of microwave frequency radiation at a temperature lower than 80 ° C environment, most of the shell The polysaccharide can be degraded into low molecular weight, oligochitosan and a small part of undegraded chitosan residue dissolved in the feed liquid, and the undegraded chitosan residue and degraded chitosan residue are obtained after filtrati...

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Abstract

The invention relates to a method for preparing chitosan into water-soluble chitosan oligosaccharide. The method is as below: rinsing and drying a raw material chitosan, soaking chitosan into a feed liquid prepared from clean water and food grade hydrogen peroxide, conducting microwave radiation degradation treatment to form a mixed solution of low molecular chitosan oligosaccharide dissoluble in the feed liquid and non-degraded chitosan, then filtering to obtain by chitosan residue and a chitosan oligosaccharide solution, subjecting the chitosan oligosaccharide solution to alcohol precipitation in ethanol, and conducting suction filtration and drying to obtain the water-soluble chitosan oligosaccharide product. Due to the microwave radiation degradation treatment technology and physical method for lasing energy, polymer chitosan degrades into low molecular water- soluble chitosan oligosaccharide with stable structure; and in the degradation process, no other reaction by-products or pollutants are generated. Compared with the preparation method in the prior art, the method has the advantages of advanced technology, simple process, less investment in production facilities, high product purity and stable quality, and opens broad market prospect for chitosan prepared from chitin as raw material.

Description

technical field [0001] The invention relates to the technical field of physical degradation, in particular to a method for preparing chitosan into water-soluble chitosan oligosaccharide. Background technique [0002] Chitosan oligosaccharide, also known as chitosan oligosaccharide, is a natural high-activity animal cellulose product made from chitosan obtained after deacetylation of chitin through high-tech degradation and separation methods. Due to its unique pharmacological effects and the resulting broad market application prospects, it has attracted increasing attention, and has even been praised as the "sixth vital element of the human body" and "soft gold". [0003] Chitin is a pure natural polymer compound, which is widely found in crustaceans such as shrimps and crabs, insects and algae. Its annual biosynthetic resources are as high as 10 billion tons, of which the production of marine organisms is about 10 It is the second largest inexhaustible natural biological r...

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Application Information

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IPC IPC(8): C08B37/08
Inventor 殷国铭殷雪江
Owner 殷国铭
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