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Method for modifying water-soluble dietary fibers of millet bran

A technology of dietary fiber and millet bran, applied in the field of food processing, can solve the problem of not being able to meet the requirement of 10% of high-quality dietary fiber, and achieve the effects of improving economic added value, good physiological activity, and good color and luster.

Inactive Publication Date: 2018-03-02
北京万通普利物流有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a method for modifying the water-soluble dietary fiber of rice bran, which is used to solve the problem that the water-soluble dietary fiber content in the current rice bran is only 3%~ 4%, unable to meet the 10% requirement of high-quality dietary fiber

Method used

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  • Method for modifying water-soluble dietary fibers of millet bran

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to figure 1 , the modification method of rice bran water-soluble dietary fiber uses red grain rice bran as raw material, pretreats it, then uses ultrasonic-microwave synergistic method to modify it, and finally adopts enzyme-gravimetric method to prepare water-soluble dietary fiber fiber, specifically comprising the steps of:

[0029] (1) Weigh 500g of millet bran into the gas explosion reactor for processing. Set the gas explosion pressure to 1.0 MPa and the gas explosion time to 90s. The millet bran was dried at 40 ℃ after air explosion pretreatment, and the moisture content was controlled within the range of 6% to 8%. Air explosion pretreatment millet bran was crushed through a 40-mesh sieve, and the fat was removed by petroleum ether Soxhlet extraction.

[0030] (2) Weigh the air-explosion pretreated millet bran, place it in the ultrasonic-microwave synergistic extractor, turn on the ultrasonic power, the material-liquid ratio is 1:60 (g / mL), the ultrasonic...

Embodiment 2

[0033] (1) Weigh 500g of millet bran into the gas explosion reactor for processing. Set the gas explosion pressure to 1.0 MPa and the gas explosion time to 90s. The millet bran was dried at 40 ℃ after air explosion pretreatment, and the moisture content was controlled within the range of 6% to 8%. Air explosion pretreatment millet bran was crushed through a 40-mesh sieve, and the fat was removed by petroleum ether Soxhlet extraction.

[0034] (2) Weigh the air-explosion pretreated millet bran, place it in the ultrasonic-microwave synergistic extraction apparatus, turn on the ultrasonic power, the solid-liquid ratio is 1:50 (g / mL), the ultrasonic-microwave synergy time is 50 min, and the microwave power is 500W.

[0035] (3) Transfer the reaction solution to the GDE enzyme culture digester, and add appropriate amount of high temperature resistant α - Amylase, neutral protease, and amyloglucosidase were used for enzymatic hydrolysis, and the pH values ​​of the reaction soluti...

Embodiment 3

[0037] (1) Weigh 500g of millet bran into the gas explosion reactor for processing. Set the gas explosion pressure to 1.0 MPa and the gas explosion time to 90s. The millet bran was dried at 40°C after air explosion pretreatment, and the moisture content was controlled within the range of 6% to 8%. Air explosion pretreatment millet bran was crushed through a 40-mesh sieve, and the fat was removed by petroleum ether Soxhlet extraction.

[0038] (2) Weigh the air-explosion pretreated millet bran, place it in the ultrasonic-microwave co-extractor, turn on the ultrasonic power, the solid-liquid ratio is 1:50 (g / mL), the ultrasonic-microwave synergistic time is 60 min, and the microwave power is 550W.

[0039] (3) Transfer the reaction solution to the GDE enzyme culture digester, and add appropriate amount of high temperature resistant α - Amylase, neutral protease, and amyloglucosidase were used for enzymatic hydrolysis, and the pH values ​​of the reaction solution were adjusted...

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Abstract

The invention relates to a method for modifying water-soluble dietary fibers of millet bran. The method for modifying water-soluble dietary fibers of millet bran comprises the following steps: 1, carrying out air blasting pretreatment on the millet bran; 2, modifying the air blasting pretreated millet bran through an ultrasonic-microwave synergism technology; and 3, preparing water-soluble dietaryfibers through an enzyme-gravimetric technology: transferring a reaction solution obtained in step 2 to a GDE enzyme culture digestor, carrying out enzymatic hydrolysis at a pH value of 4.0-6.0 at anenzymatic hydrolysis temperature of 60-95 DEG C for 20-30 min, transferring the reaction product of the enzymatic hydrolysis into a CSF6 filtering device, concentrating the obtained filtrate, and carrying out alcohol precipitation, centrifugation and freeze-drying to obtain millet bran water-soluble dietary fiber powder containing 10.3% of the water-soluble dietary fibers. The method greatly increases the content of the millet bran water-soluble dietary fibers to meet the requirements of high-quality dietary fibers, and effectively solves the problem of low utilization rate of the millet bran.

Description

1. Technical field [0001] The invention relates to the technical field of grain processing, in particular to a method for modifying rice bran water-soluble dietary fiber. 2. Background technology [0002] With the improvement of people's living standards in our country, great changes have taken place in everyone's diet structure. The intake of high-calorie foods such as animal fat and protein is too much, while the intake of coarse grains is getting less and less, resulting in more and more patients with various chronic diseases. . Some physiological effects of dietary fiber have been confirmed by scientific experiments, such as beneficial to gastrointestinal health, preventing obesity, reducing the incidence of cardiovascular disease and diabetes, etc. In order to prevent the occurrence of chronic diseases, the intake of dietary fiber should be appropriately increased. The reasonable intake recommended by the U.S. Food and Drug Administration (FDA) is 20-35g per day for a...

Claims

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Application Information

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IPC IPC(8): A23L33/21A23L5/30
CPCA23L5/30A23L5/32A23L5/34A23L33/21A23V2002/00A23V2200/326A23V2250/5116A23V2300/08A23V2300/48A23V2300/24A23V2300/40
Inventor 曹龙奎高鹏翔王维浩康丽君
Owner 北京万通普利物流有限公司
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