A kind of low crystallization fiber extraction sugar production process

A low crystallization and fiber technology, applied in sugar production, sugar production, glucose production, etc., can solve the problems of consumption and increased sugar production cost, and achieve simple equipment operation, lower enzymatic hydrolysis cost, and lower enzyme consumption Effect

Active Publication Date: 2022-05-03
江苏集萃工业生物技术研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing method, after lignocellulose is pulped, it is directly or roughly screened, so that the low-crystalline fiber contains a large amount of crystalline fiber, and a large amount of cellulase will be consumed in the subsequent enzymatic hydrolysis process, which increases the sugar production process. the cost of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1): Pulping

[0026] Cut the wheat straw to a length of about 5cm and wash the preparation material with water, put the prepared material into the steam ball, add lye, steam into the steam ball, wheat straw in 140 ° C saturated vapor to do alkali cooking for 30min, pressure relief and cooling to remove the material, with 5% pulp into the disk grinding and grinding, to obtain wheat grass pulp.

[0027] (2): Screening

[0028]The pre-treated wheat grass pulp is mixed into 3% pulp concentration, put into the overclocking vibrating screen mesh, the number of screen mesh is 50 mesh, the frequency is 20000HZ, the low crystalline fiber solution through the screen is collected, placed aside to make the fiber settle for 30min, the upper layer clear liquid is extracted, and the low crystalline fiber solution at the bottom is separated from the solid liquid to obtain the low crystalline fiber solid material.

[0029] (3): Enzymatic lysis

[0030] The low crystalline fiber solid mate...

Embodiment 2

[0032] (1): Pulping

[0033] Cut the straw to a length of about 5cm and wash the preparation material with water, put the prepared material into the steam ball, add lye, steam into the steam ball, wheat straw in 120 ° C saturated vapor to do alkali cooking for 30min, pressure relief and cooling to remove the material, with 5% pulp thick into the disc grinding and grinding, to obtain straw pulp.

[0034] (2): Screening

[0035] The pretreated wheat grass pulp is mixed into 3% pulp concentration, put into the overclocking vibrating screen mesh, the number of screen mesh is 300 mesh, the frequency is 32000HZ, the low crystalline fiber solution through the screen is collected, placed aside so that the fiber self-sedimentation is 30min, the upper layer clear liquid is extracted, and the low crystalline fiber solution at the bottom is separated from the solid solution to obtain the low crystalline fiber solid material.

[0036] (3): Enzymatic lysis

[0037] The commercial Novozymes cell...

Embodiment 3

[0039] (1): Pulping

[0040] Cut the wheat straw to a length of about 5cm or so and wash the preparation material, the prepared material is used to pass the twin screw extruder, and spray the alkali liquid on the material with two pumps, the alkali material is separated from the solid solution to separate the black liquid, the material is pre-enzymatically digested with hemicellulase for 6h, the enzymatic solution condition is pH6, the hemicellulase is 10u / g xylan, the temperature is 50 ° C, the sugar solution is extruded after enzymatic solution, and the material is formulated into 5% slurry into the disc grinding and grinding to obtain wheat grass pulp.

[0041] (2): Screening

[0042] The pretreated wheat grass pulp is mixed into a 3% slurry concentration, put into the overclocking vibrating screen mesh, the number of screen mesh is 50 mesh, the frequency is 40000HZ, the low crystalline fiber solution through the screen is collected, placed aside to make the fiber self-sedimentat...

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PUM

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Abstract

The invention discloses a process for extracting sugar with low crystallization fiber. Lignocellulose is made into slurry, and then sieved by an ultra-frequency vibrating screen to separate the crystallized fiber to obtain an aqueous solution of low crystallization fiber, which is used after solid-liquid separation. Cellulase enzymatically hydrolyzes solid materials to obtain glucose. The process of the invention better realizes the comprehensive utilization of agricultural and forestry straw biomass, improves the utilization rate of agricultural and sideline products, and solves the problems of the environment and land; separates and extracts low-crystalline fibers to make the best use of them; utilizes low-crystalline fibers With large specific surface area, small physical size and good mass transfer effect in aqueous solution, it is very suitable for enzymatic saccharification, which can reduce the amount of enzyme used, increase the solid-liquid ratio, and reduce the cost of enzymatic hydrolysis.

Description

Technical field [0001] The present invention belongs to the field of biochemical industry, particularly relates to a low crystalline fiber extraction sugar process. Background [0002] 70% of China's energy consumption comes from fossil energy, but China's fossil resources account for a relatively low proportion in the world, and oil, natural gas and coal account for 1.2%, 1.3% and 13.9% of the world's same type of resources, respectively. Fossil resources are non-renewable resources, and their development and utilization will cause irreparable damage to the environment such as air, soil and water resources, especially the El Niño meteorology brought about by the intensification of the greenhouse effect. Due to the shortage of fossil resources in China, the per capita energy is far lower than the world average, and China has become the world's largest crude oil importer, with a serious degree of dependence on foreign countries, which seriously affects the sustainable development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14C12P19/02
CPCC12P19/02C12P19/14C13K1/02C12P2201/00
Inventor 应汉杰单军强唐成伦陈彦君朱晨杰陈勇张业勇
Owner 江苏集萃工业生物技术研究所有限公司
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