Method for preparing chitosan into water-soluble chitooligo saccharide

Abstract

The invention relates to a method for preparing chitosan into water-soluble chitooligosaccharide, which comprises the following steps: using chitosan as a raw material, processing the chitosan by rinsing and drying technology, and immersing the chitosan in a material liquid prepared by purified water and edible hydrogen peroxide; carrying out the processing of microwave radiating degradation to form the mixed liquid of low-molecular chitooligo saccharide which can be dissolved in the material liquid and partial undegraded chitosan, and obtaining residual slag of chitosan and a chitooligo saccharide solution by filtration; and sending the chitooligo saccharide solution into absolute ethyl alcohol, and after alcohol precipitation, carrying out sucking filtration and drying to obtain a finished product of water-soluble chitooligo saccharide. The processing technology of microwave radiating degradation is used, and energy is mased by a physical method to degrade high-molecular chitosan into low-molecular water-soluble chitooligo saccharide with a stable structure, thus no other side product of reaction or pollutant is generated in the degrading process. Compared with the preparing method of the prior art, the invention has the advantages of advanced technology, simple procedures, low investment of production facilities, high product purity, stable quality and the like, and developsa wide market application prospect for the chitosan prepared by taking chitin as a 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 that widely exists 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 reso...

AI Technical Summary

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-products are generated during the entire degradation process, it has become a more commonly used method at present. Its disadvantages are that the process is relatively complicated, the degradation efficiency is low, and the product cost is high. At present, it is only in the stage of laboratory research and small batch trial production. There are still a series of technical problems to be solved for industrial scale production

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