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Method for preparing xylo-oligosaccharide by extracting bagasse paper pulp black liquor

A technology of xylooligosaccharides and pulp black liquor, which is applied in the direction of fermentation, etc., to achieve the effect of reducing production costs, increasing economic benefits, and good prospects for popularization and application

Inactive Publication Date: 2017-12-22
无锡新禾创工食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, bagasse is mainly used as fuel in China to assist sucrose processing and production, and a small amount is also used as a raw material for pulp preparation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method utilizing bagasse pulp black liquor to extract and prepare xylo-oligosaccharides, comprising the steps of:

[0054] A. Black liquor pretreatment

[0055] The black liquor with a mass fraction of 10% sodium hydroxide is subjected to plate and frame filter press treatment to remove particulate impurities. The filter cloth has a pore size of 20 μm, a filter pressure of 0.4 MPa, and a filter press time of 30 minutes;

[0056] B. Nanofiltration membrane treatment

[0057] The black liquor treated in step A is filtered with Xiamen's three major acid and alkali resistant nanofiltration membrane equipment, and then washed with 2 times the volume of pure water of the concentrated solution, and the retained liquid after washing is collected for later use. The operating pressure of the nanofiltration membrane 2.0MPa, membrane molecular weight 2000D;

[0058] C. Enzyme hydrolysis reaction

[0059] Add a hydrochloric acid solution with a concentration of 3% to the retent...

Embodiment 2

[0079] A method utilizing bagasse pulp black liquor to extract and prepare xylo-oligosaccharides, comprising the steps of:

[0080] A. Black liquor pretreatment

[0081] The black liquor containing 10% sodium hydroxide is processed by plate and frame filter press to remove particulate impurities. The filter cloth has a pore size of 20 μm, a filter pressure of 0.7 MPa, and a filter press time of 30 minutes;

[0082] B. Nanofiltration membrane treatment

[0083] The black liquor treated in step A is filtered with Xiamen's three major acid and alkali resistant nanofiltration membrane equipment, and then washed with 2 times the volume of pure water of the concentrated solution, and the retained liquid after washing is collected for later use. The operating pressure of the nanofiltration membrane 3.0MPa, membrane molecular weight 8000D;

[0084] C. Enzyme hydrolysis reaction

[0085] Add a hydrochloric acid solution with a concentration of 3% to the retentate obtained in step B,...

Embodiment 3

[0105] A method utilizing bagasse pulp black liquor to extract and prepare xylo-oligosaccharides, comprising the steps of:

[0106] A. Black liquor pretreatment

[0107] The black liquor containing 10% sodium hydroxide is processed by plate and frame filter press to remove particulate impurities. The filter cloth has a pore size of 20 μm, a filter pressure of 0.6 MPa, and a filter press time of 30 minutes;

[0108] B. Nanofiltration membrane treatment

[0109] The black liquor treated in step A is filtered with Xiamen's three major acid and alkali resistant nanofiltration membrane equipment, and then washed with 2 times the volume of pure water of the concentrated solution, and the retained liquid after washing is collected for later use. The operating pressure of the nanofiltration membrane 2.5MPa, membrane molecular weight 5000D;

[0110] C. Enzyme hydrolysis reaction

[0111] Add a hydrochloric acid solution with a concentration of 3% to the retentate obtained in step B,...

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Abstract

The invention relates to a method for preparing xylo-oligosaccharide by extracting bagasse paper pulp black liquor. The method comprises the steps such as pretreatment of raw materials, membrane filtration, enzymolysis, decoloration, desalination, concentration, chromatographic separation, concentration, drying, crushing and packaging. The content of XOS2-4 in an obtained xylo-oligosaccharide product disclosed by the invention can reach 65 percent or above and the content of XOS2-7 in the xylo-oligosaccharide product can reach 95 percent or above. The quality of the xylo-oligosaccharide product disclosed by the invention can meet standard requirements of the xylo-oligosaccharide industry; meanwhile, according to the method disclosed by the invention, the bagasse paper pulp black liquor is used as an extracting raw material for the xylo-oligosaccharide product, so that the recovery of sodium hydroxide in the black liquor can be realized, the impurity xylan which needs to be removed can also be fully used, further the production cost of the xylo-oligosaccharide product is greatly reduced, efficient utilization of bagasse is realized, and the utilization value of the bagasse is improved. Therefore, the method has good popularization and application prospects.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of sugarcane processing by-products, in particular to a method for extracting xylooligosaccharides from bagasse pulp black liquor. Background technique [0002] In recent years, both internationally and domestically, functional oligosaccharides have been widely used as an important part of food additives. With the rapid development of functional foods, functional beverages, and functional dairy products, the market capacity of functional sugars is also expanding rapidly. Among the many functional oligosaccharides, xylooligosaccharides are regarded as the functional oligosaccharides with the best function of proliferating bifidobacteria, inhibiting the growth of pathogenic spoilage bacteria, and purifying the intestinal tract. Due to its uniqueness compared with other oligosaccharides, it can be used in foods (or health foods) that are not suitable for using other oligosaccharide...

Claims

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Application Information

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IPC IPC(8): C12P19/14C12P19/04C08B37/14
Inventor 不公告发明人
Owner 无锡新禾创工食品科技有限公司
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