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Technique for producing rice bran hemicellulose B by using rice bran pilotscale experiment

A technology of rice bran hemicellulose and process method, which is applied in the technical field of producing rice bran hemicellulose B on a pilot scale with rice bran, and can solve the problems of difficult industrial production, complicated process, and high production cost

Inactive Publication Date: 2008-02-20
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation method of rice bran hemicellulose B that is often used at present needs to degrease rice bran first, and then prepare rice bran hemicellulose B with degreased rice bran, the process is more complicated, the production cost is higher, and industrial production is more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Dissolve 100 kg of undefatted fresh rice bran in 2000 L of 0.6% high-temperature resistant glucoamylase-containing ethyl acetate buffer, the pH of the buffer is 4.8, and the temperature is kept at 60° C. for 24 hours. After centrifugation and washing, add 2%-4% NaOH solution to the precipitate and keep it for 24 hours. After centrifugation, neutralize the extract with acetic acid to make the pH of the solution around 5.0. After centrifugation to remove the residue, use 4 times the volume of 95 % Ethanol precipitation, finally drying the precipitate at 60°C for 14 hours, and finely grinding to obtain about 0.3 kg of RBHB preparation.

Embodiment 2

[0016] Dissolve 50 kilograms of undefatted fresh rice bran in 1000L of 0.6% high temperature resistant glucoamylase-added ethyl sodium acetate buffer. The pH of the buffer is 4.8, kept at 60°C for 36 hours, centrifuged, washed, and precipitated Add 2%-4% NaOH solution and keep for 30 hours. After the solution is centrifuged, the extract is neutralized with acetic acid to make the solution pH 5.0. After the residue is removed by centrifugation, the solution is precipitated with 4 times volume of 95% ethanol, and finally the precipitate After drying at 60°C for 18 hours, about 3.5 kg of RBHB preparation was obtained after fine grinding.

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PUM

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Abstract

The invention discloses a technique method of preproducing rice bran semicellulose B by using rice bran. The invention takes undefatted fresh rice bran as raw material. The undefatted fresh rice bran is added with NaOH solution after heat-resistant glucoamylase treatment, and centrifugated, then the extract is neutralized with acetic acid to regulate pH to 4.5 to 6.0; residue is removed through centrifugation, and the extract is precipitated in 95 percent ethyl alcohol; finally the precipitation is dried under 50 to 70 DEG C, thus obtaining the rice bran semicellulose B through fine grinding. The invention has the advantages of simple technique, high product purity, low production cost, etc., thereby being very suitable for industrial production.

Description

Technical field [0001] The present invention relates to a production method of hemicellulose, in particular to a process method for producing rice bran hemicellulose B in a pilot test using rice bran. Background technique [0002] Since the 1960s, as scientists have studied the role of dietary fiber in food, it has been discovered that dietary fiber has important physiological functions to the human body. Aroused people's new understanding of dietary fiber, thereby speeding up the research and development of dietary fiber. Nowadays, dietary fiber has become an important ingredient of health food widely popular in developed countries, and it is officially listed as the "seventh most important nutrient" after sugar, protein, fat, water, minerals and vitamins. According to statistics, there are more than ten kinds of resources that can be developed and utilized for dietary fiber: rice bran, wheat bran, beet residue, bean dregs, and peel. [0003] Among them, the research on rice bra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/14
Inventor 胡国华丁庆豹马正智李慧
Owner SHANGHAI NORMAL UNIVERSITY