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Method for co-producing rice bran dietary fiber and rice bran protein by utilizing defatted rice bran

A technology of degreased rice bran and dietary fiber, which is applied in food preparation, protein food processing, plant protein processing, etc., can solve the problems of a large gap in the application of rice bran, and the simultaneous preparation process of rice bran protein and rice bran dietary fiber has not been found, so as to improve the economy. Benefits and social benefits, the effect of reducing production costs and improving utilization

Inactive Publication Date: 2011-09-14
淮南市好顺精米加工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the amount of rice bran resources in my country ranks first in the world, the deep development and utilization of rice bran and the corresponding theoretical research and development of high-tech products are still at a low level. As far as the utilization of rice bran in my country is concerned, most of it is used for feed at present, only less than 10 About % of rice bran is used to make oil or extract high-value products such as calcium phytate, inositol, oryzanol. Although certain economic benefits have been achieved, there is still a gap with the depth of comprehensive utilization of rice bran and the application of high-tech in developed countries. very big
According to the search by the applicant, there is no relevant technical report on the simultaneous preparation process of rice bran protein and rice bran dietary fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing rice bran dietary fiber and rice bran protein by co-production of defatted rice bran, comprising the following process steps:

[0032] (1) Crush: Crush the defatted rice bran and filter through an 80-mesh sieve;

[0033] (2) Soaking: Soak the crushed defatted rice bran in NaOH solution with a concentration of 0.15mol / L for 60 minutes to obtain the soaked product;

[0034] (3) Centrifugation: Centrifuge the soaked material with a centrifuge speed of 4500r.min-1 and a centrifugation time of 10min to obtain the first filter residue and the first protein filtrate;

[0035] (4) Compound enzymatic hydrolysis:

[0036] (a) Mix the substrate and buffer evenly to obtain a bottom solution. The substrate is defatted rice bran, and the buffer is a phosphate buffer solution of sodium dihydrogen phosphate and disodium hydrogen phosphate with a concentration of 0.1 mol / L by weight. The weight percentage concentration is 21%, and then the first filter residue a...

Embodiment 2

[0042] A method for preparing rice bran dietary fiber and rice bran protein by co-production of defatted rice bran, comprising the following process steps:

[0043] (1) Crush: Crush the defatted rice bran and filter through a 100-mesh sieve;

[0044] (2) Soaking: Soak the crushed defatted rice bran in NaOH solution with a concentration of 0.15mol / L for 45 minutes to obtain the soaked product;

[0045] (3) Centrifugation: Centrifuge the soaked material with a centrifuge speed of 4500r.min-1 and a centrifugation time of 8min to obtain the first filter residue and the first protein filtrate;

[0046] (4) Compound enzymatic hydrolysis:

[0047] (a) Mix the substrate and buffer evenly to obtain a bottom solution. The substrate is defatted rice bran, and the buffer is a phosphate buffer solution of sodium dihydrogen phosphate and disodium hydrogen phosphate with a concentration of 0.1 mol / L by weight. The weight percentage concentration is 19%, and then the first filter residue and ...

Embodiment 3

[0053] A method for preparing rice bran dietary fiber and rice bran protein by co-production of defatted rice bran, comprising the following process steps:

[0054] (1) Crush: Crush the defatted rice bran and filter through a 90-mesh sieve;

[0055] (2) Soaking: Soak the crushed defatted rice bran in NaOH solution with a concentration of 0.15mol / L for 50 minutes to obtain the soaked product;

[0056] (3) Centrifugation: Centrifuge the soaked material with a centrifuge speed of 4500r.min-1 and a centrifugation time of 9min to obtain the first filter residue and the first protein filtrate;

[0057] (4) Compound enzymatic hydrolysis:

[0058] (a) mix the substrate and the buffer evenly to obtain the bottom solution, the substrate is defatted rice bran, the buffer is potassium dihydrogen phosphate buffer solution with a weight percent concentration of 0.1mol / L, and the weight percent concentration of the bottom solution is 20%, Then add the first filter residue and compound enzy...

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Abstract

The invention provides a method for co-producing rice bran dietary fiber and rice bran protein by utilizing defatted rice bran. The rice bran dietary fiber and rice bran protein are coproduced from defatted rice bran by using alkali treatment, centrifugation treatment and enzyme treatment degradation technologies and centrifugal sedimentation and isoelectric point sedimentation technologies. By the method, the defect that the defatted rice bran only can produce the rice brain dietary fiber or the rice bran protein in the prior art is overcome, the utilization factor of rice bran is greatly improved, the production efficiency is improved, the production cost is effectively reduced, and the economic benefit and social benefit are improved.

Description

technical field [0001] The invention relates to a method for preparing rice bran dietary fiber and rice bran protein, in particular to a method for preparing rice bran dietary fiber and rice bran protein by co-production of defatted rice bran. Background technique [0002] Rice bran is the most important kind of by-product in rice processing. At present, the rice bran resource in my country is about 10 million tons. The resource is very rich, and it is a renewable resource with a large amount and a wide range. The United Nations Industrial Development Organization (UNIDD) refers to rice bran as an underutilized raw material (An underutilized raw material). Although the amount of rice bran resources in my country ranks first in the world, the deep development and utilization of rice bran and the corresponding theoretical research and development of high-tech products are still at a low level. As far as the utilization of rice bran in my country is concerned, most of it is use...

Claims

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Application Information

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IPC IPC(8): A23L1/10A23L1/308A23J1/12A23J3/14A23J3/34A23L7/10
Inventor 仇多根袁怀波李克陈光
Owner 淮南市好顺精米加工厂
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