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Method for efficiently separating xylose from beer lees

A high-efficiency technology of brewer's grains, applied in the field of comprehensive utilization of by-products of beer processing industry, can solve the problems of increasing the production cost of xylose processing enterprises, cumbersome deacidification and decolorization processes, limiting the scope of xylose promotion, etc. The effect of reducing production cost and simple process route

Inactive Publication Date: 2013-04-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main raw materials for the traditional preparation of xylose are corncobs, bagasse, etc., which generally have regional and seasonal problems, which limit the promotion range of xylose production technology and increase the production cost of xylose processing enterprises
The main preparation process of xylose mostly uses sulfuric acid with a relatively high concentration (about 75%), and hydrolysis is carried out under high temperature and high pressure conditions. The requirements for production equipment and raw material treatment are relatively strict, and the hydrolyzate also contains a large amount of pigmentation. As well as other aldehydes and phenols, the subsequent deacidification and decolorization processes are also more cumbersome, accompanied by the generation of a large amount of sulfuric acid wastewater, which seriously pollutes the surrounding environment of the production enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The wet brewer's grains with a water content of 50% to 75% are soaked in water for 3 hours, filtered, and dried until the water content is about 3% to 5%, so as to obtain brewer's grain cellulose and hemicellulose matrix.

[0024] Prepare the material according to the ratio of liquid to material (mL:g) 50:1 (100 g of 100-mesh brewer's grain cellulose and hemicellulose matrix are added to 5000 mL of a solution with a sulfuric acid concentration of 6%), hydrolyzed at 50 ° C for 6 hours, and filtered Get the filtrate.

[0025] In neutralization and deacidification, the temperature is 40°C, add 15°Bé lime milk, adjust the pH value to 3.5, keep warm for 30min, and then filter.

[0026] During the decolorization process, 3.5% powdered activated carbon was used to adjust the pH value to 2.0, the decolorization temperature was 70°C, and the decolorization time was 50 minutes to decolorize the brewer's grain xylose liquid.

[0027] Vacuum concentration is adopted, the vacuum de...

Embodiment 2

[0030] Soak the wet brewer's grains with a water content of 50% to 75% in water for 1 hour, filter and dry until the water content is about 3% to 5%, to obtain brewer's grain cellulose and hemicellulose matrix.

[0031] Prepare the material according to the ratio of liquid to material (mL:g) 80:1 (add 100 g of 40-mesh brewer's grain cellulose and hemicellulose matrix to 8000 mL of a solution with a sulfuric acid concentration of 1%), hydrolyze at 40 ° C for 10 hours, and filter Get the filtrate.

[0032] In neutralization and deacidification, the temperature is 75°C, 15°Bé milk of lime is added, the pH value is adjusted to 5.0, and filtration is carried out after holding for 10 minutes.

[0033] During the decolorization process, 0.5% cylindrical activated carbon was used to adjust the pH value to 4.0, the decolorization temperature was 40°C, and the decolorization time was 120 minutes to decolorize the brewer's grain xylose liquid.

[0034] Concentrate in vacuum with a vacuu...

Embodiment 3

[0037] The wet brewer's grains with a water content of 50% to 75% are soaked in water for 10 hours, filtered, and dried until the water content is about 3% to 5%, so as to obtain brewer's grain cellulose and hemicellulose matrix.

[0038] Prepare the material according to the ratio of liquid to material (mL:g) 20:1 (add 100 g of 160-mesh brewer’s grain cellulose and hemicellulose matrix to 2000 mL of a solution with a sulfuric acid concentration of 4.5%), hydrolyze at 100 ° C for 1 hour, and filter Get the filtrate.

[0039] In neutralization and deacidification, the temperature is 90°C, 15°Bé milk of lime is added, the pH value is adjusted to 7.0, and filtration is carried out after 120 minutes of heat preservation.

[0040] During the decolorization process, 6.0% granular activated carbon I was used to adjust the pH value to 7.0, the decolorization temperature was 100°C, and the decolorization time was 10 minutes to decolorize the brewer's grain xylose liquid.

[0041] Vacu...

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PUM

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Abstract

The invention relates to a method for efficiently separating xylose by using beer lees as a raw material, and belongs to the technical field of comprehensive utilization of byproducts in the beer processing industry. The preparation method comprises the processes of raw material pretreatment, crushing of cellulose and hemicellulose matrix, sulfuric acid hydrolysis and leaching, neutralization andacid removal, decolorization, concentration, alcohol precipitation, drying and the like. After the wet beer lees is dried, crushed and screened, beer lees xylose coarse extract with yield of 36.07 percent and content of 8.48 percent can be obtained by adopting the sulfuric acid hydrolysis and leaching technology. The method has the advantages of simple designed process, low equipment investment and feasible industrialized popularization, develops the raw material market of xylose preparation, changes 'waste' into 'valuable', improves the additional value of the beer lees, and meanwhile greatly reduces the production cost for preparing the xylose; and the obtained beer lees xylose can be prepared into multiple formulations such as oral liquid, capsules, chewable tablets or lozenge and the like for eating by adding or without adding other components.

Description

technical field [0001] The invention relates to a method for efficiently separating xylose from brewer's grains, and belongs to the technical field of comprehensive utilization of by-products in the beer processing industry. Background technique [0002] Xylose is a five-carbon sugar with no calorie value. It has the functions of anti-caries, lowering blood fat, lowering cholesterol, preventing intestinal cancer, and promoting the body's absorption of calcium. It can not only meet the special needs of patients with diabetes, obesity, and hyperlipidemia. Nutritional needs, and can also be widely used in food, chemical and other fields. [0003] The main raw materials for the traditional preparation of xylose are corncobs, bagasse, etc., which generally have regional and seasonal problems, which limit the promotion range of xylose production technology and increase the production cost of xylose processing enterprises. The main preparation process of xylose mostly uses sulfuri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K13/00
Inventor 林松毅李秋杰刘静波宫新统
Owner JILIN UNIV