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Treatment method of defatted rice bran

A technology of defatted rice bran and a processing method, which is applied in the field of food processing, can solve the problems of reducing nutritional value, waste, and insufficient utilization of effective resources, and achieves the effects of increasing economic benefits and improving utilization rate

Active Publication Date: 2021-04-06
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the scattered processing of grains, the resulting bran is cheap and easily rancid, reducing its nutritional value
At present, rice bran is mostly used as feed, so that this effective resource cannot be fully utilized, resulting in great waste

Method used

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  • Treatment method of defatted rice bran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] (1) Extruding and expanding the defatted rice bran. When extruding and expanding, set the water content of the material to 20%, and add corresponding proportion of distilled water accordingly. Then set the extrusion temperature of the extruder to 120° C., and the screw speed to 150 r / min. After the extrusion is finished, the extrudate is crushed and ground into powder, and then sealed and bagged for later use.

[0067] (2) Add distilled water 25 times the weight of the extruded product to the extruded product, stir and mix evenly, and then adjust the pH to 4.0. Add compound enzyme enzymolysis 40min therein, wherein, the compound enzyme addition amount is 1%, compound enzyme is mixed by weight ratio 1:1 by cellulase (enzyme activity 15000U / g) and pectinase (enzyme activity 30000U / g) made.

[0068] (3) The enzymatic hydrolysis product was ultrasonically treated at 80° C. and 400 W power for 60 minutes, and then centrifuged at 4000 r / min for 20 minutes to obtain the fir...

Embodiment 2

[0073] (1) Extruding and expanding the defatted rice bran. When extruding and expanding, set the water content of the material to 20%, and add corresponding proportion of distilled water accordingly. Then set the extrusion temperature of the extruder to 120° C., and the screw speed to 150 r / min. After the extrusion is finished, the extrudate is crushed and ground into powder, and then sealed and bagged for later use.

[0074] (2) Add distilled water 10 times the weight of the extruded product to the extruded product, stir and mix evenly, and then adjust the pH to 4.0. Add compound enzyme enzymolysis 40min therein, wherein, the compound enzyme addition amount is 1%, compound enzyme is mixed by weight ratio 1:1 by cellulase (enzyme activity 15000U / g) and pectinase (enzyme activity 30000U / g) made.

[0075] (3) The enzymatic hydrolysis product was ultrasonically treated at 80° C. and 300 W power for 60 minutes, and then centrifuged at 4000 r / min for 20 minutes to obtain the fir...

Embodiment 3

[0080] (1) Extruding and expanding the defatted rice bran. When extruding and expanding, set the water content of the material to 20%, and add corresponding proportion of distilled water accordingly. Then set the extrusion temperature of the extruder to 115° C., and the screw speed to 120 r / min. After the extrusion is finished, the extrudate is crushed and ground into powder, and then sealed and bagged for later use.

[0081] (2) Add distilled water 15 times the weight of the extruded product to the extruded product, stir and mix evenly, and then adjust the pH to 4.0. Add compound enzyme enzymolysis 40min wherein, wherein, compound enzyme addition is 1%, compound enzyme is mixed by weight ratio 1:1.1 by cellulase (enzyme activity 15000U / g) and pectinase (enzyme activity 30000U / g) made.

[0082] (3) The enzymatic hydrolysis product was ultrasonically treated at 60° C. and 300 W power for 60 minutes, and then centrifuged at 4000 r / min for 20 minutes to obtain the first supern...

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Abstract

The invention discloses a treatment method of defatted rice bran. The treatment method of the defatted rice bran comprises the steps of carrying out extrusion puffing treatment on the defatted rice bran; adding water into the extrusion product, mixing, and adding cellulase-pectinase into the mixture for enzymolysis; carrying out ultrasonic treatment on the enzymolysis product, and centrifuging to obtain a first supernatant and a precipitate; sequentially removing starch and protein from the first supernatant, and purifying to obtain rice bran polysaccharide; taking a part of the precipitate, adding water, mixing, adjusting the pH value to be acidic, then separating out a second supernatant, and adjusting the pH value of a second supernatant to be neutral to obtain phytate; and taking the other part of the precipitate, adding water, mixing, adjusting the pH value to be alkaline, separating out a third supernatant, and adjusting the pH value of the third supernatant to be acidic to obtain the rice bran protein. The invention aims to improve the comprehensive utilization rate of rice bran resources.

Description

technical field [0001] The invention relates to the technical field of grain processing, in particular to a method for processing defatted rice bran. Background technique [0002] Rice is the most important food crop in my country. Its total yield and per unit yield are higher than that of wheat. It also has the characteristics of comprehensive nutrition, convenient processing, and high absorption rate. Today, the annual output of rice can reach 250 million tons. Rice bran is a by-product of rice processing and production. The output of rice bran accounts for about 7% of the total amount of rice, and the nutritional components can account for about 64% of the nutrition of rice. Rice bran contains 11% water, 18% carbohydrates, 11% protein, 21% fat, 30% dietary fiber, and rich vitamins and minerals. Rice bran is rich in various physiologically active substances such as rice bran polysaccharide, tocopherol, oryzanol and phytosterol, which can be used to produce various health...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/125A23L33/10A23L33/185A23K20/163A23K20/147A23K20/10C08B37/00C07F9/117C12P19/04C12P19/14C12P19/20
CPCA23L33/125A23L33/10A23L33/185A23K20/163A23K20/147A23K20/10C08B37/0003C07F9/117C12P19/04C12P19/14C12P19/20C07K1/30C07K1/145A23V2002/00A23V2200/30A23V2200/308A23V2200/328A23V2200/3262A23V2250/51A23V2250/548
Inventor 黄文晶鄢宏浩胡中泽
Owner WUHAN POLYTECHNIC UNIVERSITY
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