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A new wet corn soaking process

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 effect of unchanged product quality, low protein content and less dosage

Active Publication Date: 2020-11-24
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. After stirring for 30 minutes, at 60℃ After reacting for 3 hours, add ammonia water to adjust the pH to 11, continue stirring for 1 hour, and obtain C by magnetic separation, washing with water, and drying. 60 / Fe 3 O 4 Composite magnetic material;

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

Embodiment 2

[0021] (1) Take 10g C 70 The fullerene was added to 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. After stirring for 30 minutes, the reaction was carried out at reflux temperature 2 After hours, add ammonia water to adjust the pH to 11, continue to stir for 2 hours, and obtain C by magnetic separation, washing with water and drying 70 / Fe 3 O 4 Composite magnetic material;

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

Embodiment 3

[0024] Crush the commercially available degerminated corn (100kg) to 20-40 mesh, add water (300kg) and product A (200g), stir and soak at 50°C for 5 hours, and recover the magnetic fullerene immobilized enzyme ( After the recovery rate is 99.1%), the remaining soaking mixture is transferred to a pulverizer and finely pulverized. After passing a 200-mesh sieve, the filtrate is allowed to stand overnight, centrifuged, and dried to obtain 69.2 kg of corn starch (protein ≤ 0.4%).

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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 specifically 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 corn starch to the new tank, and adding new acid to corn with a long soaking time. There is a regular cycle between tanks. This circulation process can maintain a certain concentration difference between the soluble matter in the corn and the soaking solution, and soak the soluble matter 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 also corrode equipment and pipelines, increasing production costs. In the final product, the residual sulfur dioxide will affect the qua...

Claims

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Application Information

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Patent Type & Authority Patents(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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