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Rice bran meal industrial utilization method having high temperature extrusion pre-treatment

A rice bran meal and pretreatment technology, applied in microorganism-based methods, biochemical equipment and methods, applications, etc., can solve problems such as difficulty in filtration, and achieve the effect of improving filtration characteristics and ensuring the utilization rate of industrial use.

Inactive Publication Date: 2016-03-02
JIANGSU KANG ZHI YUAN GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, provide a method for industrial utilization of rice bran meal with high-temperature extrusion pretreatment, and solve the problem of high-temperature defatted rice bran meal extraction and separation of components such as phytate and dietary fiber. Filtration difficulties brought about in the process, while improving the filtration characteristics of high-temperature rice bran meal, ensure the industrial utilization rate of rice bran meal

Method used

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Examples

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Effect test

Embodiment 1

[0019] A method for industrial utilization of rice bran meal with high-temperature extrusion pretreatment provided in this embodiment, the specific steps include:

[0020] (1) Make a suspension of rice bran meal that is stable at high temperature extrusion and deoiled by solvent method, add amylase and heat it with steam, quickly raise the temperature to 35°C, control the stirring speed at 60 rpm, and the hydrolysis time does not exceed 18min. into the reaction tank; amylase hydrolyzes the gelatinized starch in the extruded rice bran at 30°C, the amylase used is a medium-temperature or high-temperature α-amylase, and the enzyme activity range is between 200,000U / mL;

[0021] (2) Separation of rice bran phytic acid and dietary fiber; first, use an acidifier to adjust the pH to 2.0, extract the phytate, and then perform solid-liquid separation to obtain a phytic acid extract, then adjust the pH of the solid residue to 5.0 with alkali, and re- After adding amylase, heat up to 80°...

Embodiment 2

[0025] A method for industrial utilization of rice bran meal with high-temperature extrusion pretreatment provided in this embodiment, the specific steps include:

[0026] (1) Adjust the rice bran meal that is stable at high temperature and deoiled by solvent method into a suspension, add amylase and heat it with steam, quickly raise the temperature to 45°C, control the stirring speed at 90 rpm, and the hydrolysis time does not exceed 18min. into the reaction tank; amylase hydrolyzes the gelatinized starch in the extruded rice bran at 50°C, the amylase used is a medium-temperature or high-temperature α-amylase, and the enzyme activity range is between 30000U / mL;

[0027] (2) Separation of rice bran phytic acid and dietary fiber; first, use an acidifier to adjust the pH to 3.0, extract the phytate, and perform solid-liquid separation to obtain a phytic acid extract, then adjust the pH of the solid residue to 6.0 with alkali, and re- After adding amylase, heat up to 95°C, enzyma...

Embodiment 3

[0031] A method for industrial utilization of rice bran meal with high-temperature extrusion pretreatment provided in this embodiment, the specific steps include:

[0032] (1) Adjust the rice bran meal that is stable at high temperature and deoiled by solvent method into a suspension, add amylase and heat it with steam, quickly raise the temperature to 40°C, control the stirring speed at 80 rpm, and the hydrolysis time does not exceed 18min. into the reaction tank; amylase hydrolyzes the gelatinized starch in the extruded rice bran at 40°C, the amylase used is a medium-temperature or high-temperature α-amylase, and the enzyme activity range is between 150,000U / mL;

[0033] (2) Separation of rice bran phytic acid and dietary fiber; first, adjust the pH to 2.5 with an acidifier, extract the phytate, and then perform solid-liquid separation to obtain a phytic acid extract, then adjust the pH of the solid residue to 5.5 with alkali, and re- After adding amylase, heat up to 90°C, e...

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Abstract

The present invention discloses a rice bran meal industrial utilization method having a high temperature extrusion pre-treatment. The rice bran meal industrial utilization method comprises: blending rice bran meal being subjected to high temperature extrusion stabilization and solvent deoiling into a suspension, adding an amylase, carrying out steam heating, rapidly heating to a temperature of 35-45 DEG C, controlling a stirring rotation speed at 60-90 rotation / min and controlling a hydrolysis time of not more than 18 min, pumping into a reaction tank, separating rice bran phytic acid and dietary fibers, carrying out anaerobic fermentation on the liquid phase obtained through solid-liquid separation to obtain the fermentation broth containing butanol, acetone and ethanol, and carrying out enzymolysis, concentration and drying on the solid phase obtained through solid-liquid separation. According to the present invention, with the designed rice bran meal industrial utilization method having the high temperature extrusion pre-treatment, the difficult filtration problem caused by the phytate, dietary fiber and other component extraction separation process of the high temperature degreased rice bran meal is solved, and the filtration characteristics of the high temperature degreased rice bran meal are improved while the industrial utilization rate of the rice bran meal is ensured.

Description

technical field [0001] The invention belongs to the technical field of deep processing of rice bran dregs raw materials, and in particular relates to an industrial utilization method of rice bran dregs with high-temperature extrusion pretreatment. Background technique [0002] Rice bran is the main by-product of rice processing. The rice bran produced by rice processing in my country is more than 10 million tons every year. It is a renewable resource with a large number of fields. Rice bran is rich in oil, a variety of high-quality proteins, dietary fiber, and mineral elements. And B vitamins and other nutrients, so it is also a food resource with high nutritional value. [0003] It is very common for rice bran to be used to extract phytate and dietary fiber, such as the method of preparing rice bran dietary fiber and rice bran protein by co-production of defatted rice bran. In the state of melting, after adding to the aqueous solution, the viscosity will not increase, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/16C12P7/28C12P7/10C08H99/00A23L1/308C12R1/145
CPCY02E50/10
Inventor 李勃
Owner JIANGSU KANG ZHI YUAN GRAIN & OIL
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