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Production technology of cello-oligosaccharide

A technology of cellooligosaccharide and production process, which is applied in the field of cellooligosaccharide production technology, can solve the problems of low purity and low yield of cellooligosaccharide, and achieve the effects of improving subsequent processing technology, fully rational utilization, and increasing utilization value

Inactive Publication Date: 2016-12-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] [Objective of the invention] The purpose of the present invention is to solve the problems of low yield and low purity of the existing cellooligosaccharides in the production process. high production method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) The biomass sample rich in cellulose is pulverized into particles below 2mm; (2) The pulverized sample and the reaction solution (mixture of sulfuric acid and phosphoric acid solution wherein: the molar concentration of sulfuric acid and phosphoric acid is 8 mol / L and 5.5 mol / L) were placed in a reaction vessel with a solid-to-liquid ratio of 1:5 and mixed evenly; (3) the reaction system was reacted at room temperature at 30°C for 60 minutes, with intermittent stirring during the reaction to ensure that the reaction was evenly carried out; (4) adding the reaction Dilute the acid with 10 times the volume of water and stir evenly; (5) Perform high-temperature hydrolysis on the reaction system for 90 minutes at 110°C; (6) Use solid NaOH to neutralize the liquid part, and add 3 times the volume of NaOH to the neutralized filtrate After ethanol precipitates cellooligosaccharides, suction filtration is used for liquid-solid separation, and further decolorization and recry...

Embodiment 2

[0021] (1) Grinding the cellulose-rich biomass sample into particles below 2 mm; (2) Grinding the pulverized sample and the reaction solution (mixture of sulfuric acid and phosphoric acid solution, wherein: the molar concentration of sulfuric acid and phosphoric acid is 5 molar / L and 4 mol / L) were placed in a reaction vessel with a solid-to-liquid ratio of 1:5 and mixed evenly; (3) The reaction system was reacted at room temperature at 30°C for 60 minutes, stirring intermittently during the reaction to ensure uniform reaction; (4) adding Dilute the acid with 10 times the volume of the reaction solution and stir it evenly; (5) Perform high-temperature hydrolysis on the reaction system for 30 minutes at 110°C; (6) Use solid NaOH to neutralize the liquid part, and filter the neutralized filtrate through a nanofiltration membrane The salt was removed, decolorized, and then concentrated to obtain a concentrated solution of cellooligosaccharides.

Embodiment 3

[0023] (1) Grinding the cellulose-rich biomass sample into particles below 2mm; (2) Grinding the pulverized sample and the reaction solution (mixture of sulfuric acid and phosphoric acid solution, wherein: the molar concentration of sulfuric acid and phosphoric acid is 8 molar / L and 5.5 mol / L) were placed in the reaction container according to the solid-to-liquid ratio of 1:20 and mixed evenly; (3) The reaction system was reacted at room temperature 30°C for 60 minutes, and intermittent stirring was carried out during the reaction to ensure that the reaction was evenly carried out; (4) adding Dilute the acid with 30 times the volume of the reaction solution and stir it evenly; (5) perform high-temperature hydrolysis on the reaction system at 121°C for 60 minutes; (6) neutralize the liquid part with liquid NaOH, and add 3 times the volume of the neutralized filtrate After precipitating cellooligosaccharides with ethanol, suction filtration is used for liquid-solid separation, f...

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PUM

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Abstract

The invention discloses a production technology of cello-oligosaccharide. The technology comprises the following basic steps: (1) crushing a biomass raw material (2) uniformly mixing the crushed sample and a reaction solution; (3) letting the reaction system react at room temperature for a certain period of time; (4) adding water to dilute a reaction liquid; (5) hydrolyzing the reaction system at high temperature for a period of time; (6) carrying out solid-liquid separation, and neutralizing a liquid part by the use of alkali; and (7) carrying out sugar-salt separation to obtain cello-oligosaccharide. The operation method is simple, and the problem that molecular weight cannot be manually controlled at a stage by pure biomass degradation is solved. The production technology makes it possible to realize industrial large-scale production of cellulose-enriched biomass and obtain high-purity cello-oligosaccharide.

Description

technical field [0001] The invention belongs to the technical field of oligosaccharide preparation, in particular to a production process of cellooligosaccharide. Background technique [0002] Cellooligosaccharides are oligosaccharides formed by connecting about 10 glucose molecules through β-1,4-glycosidic bonds. A collective term for sugar and cellohexaose. It is a functional oligosaccharide with unique physiological functions such as promoting mineral absorption, lowering serum cholesterol, enhancing body immunity and low anti-tumor. It is an oligosaccharide with special physiological effects on humans, animals and plants. At present, the physiological functions of cellooligosaccharides have received the same attention as other oligosaccharides. [0003] Typically, cellooligosaccharides are obtained by hydrolyzing its polymer, cellulose, using enzymes. However, most naturally occurring cellulose exists in the form of lignocellulose, which is insoluble in water and high...

Claims

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Application Information

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IPC IPC(8): C13K13/00
CPCC13K13/00
Inventor 徐建李宏强杨永青
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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