Liquid medium for degrading beta-glucan and method for degrading beta-glucan

Abstract

The invention discloses a liquid medium for degrading beta-glucan and a method for degrading beta-glucan. The liquid medium is a deep-eutectic solvent, and the deep-eutectic solvent is prepared from the following raw materials: choline or choline salt, saccharides or polyol, urea and organic acid. According to the method for degrading the beta-glucan, the low-molecular-weight degradation product can be obtained through simple solid-liquid separation operation after degradation is completed, the obtained low-molecular-weight degradation product has better water solubility, water removal is not needed in the degradation process, the speed is high, the process can be simplified, energy consumption can be reduced, and the method is environmentally friendly, safe and non-toxic; the method has the advantages of biodegradability, low cost, simplicity and convenience in operation and the like, and has a good industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of biodegradation, in particular to a liquid medium for degrading β-glucan and a method for degrading β-glucan. Background technique [0002] β-glucan is a glucan containing β-glucosidic bonds, especially β-1,3 glycosidic bonds, and has various biological activities such as immune regulation. There are many different natural sources of β-glucan, including yeast, oat bran, barley fiber, mushrooms (higher fungi), algae, etc. β-glucans from different sources have different properties due to differences in sugar chain structures. ①The β-glucan in oats, barley and rye has a straight-chain structure in which β-1,3-glucan and β-1,4-glucan fragments are alternately arranged; ②Schizophyllum, The β-glucans of higher fungi such as Grifola frondosa (Maitake) are β-1,3-glucans containing β-1,6-monosaccharides or shorter side chains; ③glucans in yeast cell walls It is the main chain of β-1,3-glucan, and the longer side ...

AI Technical Summary

Problems solved by technology

Evaporation or membrane treatment is generally used to remove a large amount of water in the system after degradation, which has problems such as high energy consumption, long time consumption, and flux attenuation of membrane elements.

In addition, since β-glucan is a natural polymer, the viscosity and concentration of polysaccharide solution generally have an exponential relationship, and the viscosity increases rapidly with the increase of concentration; limited by the increase of viscosity, it is difficult to further process in order to meet the requirements of stirring, pumping and other process operations. Increase the concentration of polysaccharides in the system, resulting in lower system efficiency

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