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Novel wet corn soaking method

A process and wet process technology, applied in the field of new wet process corn soaking process, can solve the problems of reducing economic benefits, environmental pollution, corrosion of equipment and pipelines, etc., and achieve the effects of unchanged product quality, low protein content and high yield

Active Publication Date: 2018-07-24
BIOLOGY INST OF SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sulfur dioxide produced in the traditional immersion process is the main component of acid rain, which will cause environmental pollution. At the same time, sulfurous acid will also corrode equipment and pipelines, increasing production costs.
In the final product, the residue of sulfur dioxide will affect the quality of starch products and the utilization of by-products, reducing economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Take 10g C 60 Fullerene was added to 600mL of ethanol solution with a volume fraction of 30%, and after 30KHz ultrasonic dispersion for 0.5h, ferrous chloride (15mmol) and ferric chloride (30mmol) were added under stirring, and after continuous stirring for 30 minutes, at 60°C After reacting for 3 hours, add ammonia water to adjust the pH to 11, continue to stir for 1 hour, and obtain C by magnetic separation, washing and drying. 60 / Fe 3 o 4 Composite magnetic materials;

[0019] (2) Take the C obtained in step (1) 60 / Fe 3 o 4 Composite magnetic material (1.0g) and papain (30mg) are placed in 80mL phosphate buffer solution pH 6.0, after 30KHz ultrasonic 45min, obtain described magnetic fullerene-immobilized enzyme (hereinafter referred to as product by magnetic separation, washing, drying) A, the enzyme immobilization rate is 89.2%).

Embodiment 2

[0021] (1) Take 10g C 70 Fullerene was added with 400mL of ethanol solution with a volume fraction of 50%, and after 40KHz ultrasonic dispersion for 0.5h, ferrous sulfate (25mmol) and ferric sulfate (50mmol) were added under stirring, and after continuous stirring for 30 minutes, the reaction was carried out at reflux temperature for 2 After 1 hour, add ammonia water to adjust the pH to 11, continue stirring for 2 hours, and obtain C by magnetic separation, washing, and drying. 70 / Fe 3 o 4 Composite magnetic materials;

[0022] (2) Take the C obtained in step (1) 70 / Fe 3 o 4 Composite magnetic material (1.0g) and papain (50mg) are placed in 100mL phosphate buffer solution pH 7.0, after 40KHz ultrasonic 30min, obtain described magnetic fullerene-immobilized enzyme (hereinafter referred to as product by magnetic separation, washing, drying) B, the enzyme immobilization rate is 88.0%).

Embodiment 3

[0024] Commercially available degerminated corn (100kg) was crushed to 20-40 mesh, water (300kg) and product A (200g) were added, stirred and soaked at 50°C for 5 hours, and the magnetic fullerene-immobilized enzyme was recovered by magnetic separation ( After the recovery rate is 99.1%), the remaining soaked mixture is transferred to a pulverizer for fine pulverization, and the filtrate is allowed to stand overnight after crossing a 200 mesh sieve, centrifuged, and dried to obtain 69.2 kg of cornstarch (protein≤0.4%).

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PUM

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Abstract

The invention relates to a novel wet corn soaking method. The method comprises pulverizing de-embryonated corn to obtain powder of 20-40 meshes, adding water and a magnetic fullerene immobilized enzyme into the powder, carrying out stirring and soaking at 30-50 DEG C for 5-8 hours, recovering the magnetic fullerene immobilized enzyme through magnetic separation, transferring the remaining soakingmixture into a pulverizer, carrying out fine pulverization, sieving the powder through a sieve of 200 meshes, standing the filtrate over night, carrying out centrifugal separation and carrying out drying to obtain corn starch.

Description

technical field [0001] The invention belongs to the field of corn starch extraction, and in particular relates to a novel wet corn soaking process. Background technique [0002] The traditional corn starch extraction process uses old pulp and new acid (about 0.2% sulfurous acid solution) to soak in a soaking tank. The complete soaking process includes adding old pulp to new tanks, adding new acid to corn that has been soaked for a long time There is a regular cycle from tank to tank. This circulation process can maintain a certain concentration difference between the corn and the soluble substances in the soaking liquid, and soak the soluble substances in the corn. However, the sulfur dioxide produced in the traditional immersion process is the main component of acid rain, which will cause environmental pollution. At the same time, sulfurous acid will corrode equipment and pipelines and increase production costs. In the final product, the residual sulfur dioxide will affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/04C12N11/14
CPCC08B30/044C12N9/63C12N11/14C12Y304/22002
Inventor 刘庆艾史建国马耀宏杨俊慧孟庆军王丙莲马恒李秋顺公维丽蔡雷郑岚高广恒
Owner BIOLOGY INST OF SHANDONG ACAD OF SCI
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