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Method suitable for removing arsenic from rice bran

A technology for removing arsenic, which is applied in the processing of plant protein, etc., can solve the problem of high arsenic content in rice bran protein, achieve the effects of reducing residual amount, improving utilization efficiency, and obvious removal effect

Active Publication Date: 2013-12-25
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of excessive arsenic content in rice bran protein in actual production, the present invention proposes a method for removing arsenic in rice bran protein under certain conditions by washing with water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0010] 1. Add rice bran protein and distilled water into the beaker at a mass ratio of 1:7~1:12, and then add NaOH to adjust the pH, so that the pH of the system is 11.5. Put the beaker in a constant temperature water bath and keep the temperature at 75~100°C. Wait until the temperature of the whole system is constant; 2. After the system is stable, the temperature is 75~100°C, the stirring speed is 80~280r / min, and the washing time is 10~60min; 3. To terminate the reaction, take the reaction kettle out of the water bath and lower At room temperature, transfer all the substances in the test tube to a centrifuge tube, place in a high-speed centrifuge at 4000r / min, centrifuge for 30min, take out the supernatant after centrifugation, and adjust the pH of the supernatant to 4.2 with 0.1 mol / L HCl. 4000 r / min centrifuged for 30 min, the sediment was washed with water, and centrifuged again; 4. The rice bran protein was obtained by vacuum freeze-drying. The operating conditions fo...

specific Embodiment approach 2

[0011] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 1, rice bran protein and distilled water are added to the beaker at a mass ratio of 1:9 to 1:11, and other steps are the same as Embodiment 1.

specific Embodiment approach 3

[0012] Specific embodiment three: The difference between this embodiment and specific embodiment one is that in step one, rice bran protein and distilled water are added to the beaker with a mass ratio of 1:7 to 1:12, and the beaker is placed in a constant temperature water bath to keep The temperature is 80-100°C, and the other steps are the same as those in Embodiment 1.

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Abstract

The invention provides a method for removing arsenic from rice bran protein under certain conditions through a water washing method. The method solves the problem that the arsenic content in rice bran protein is too high in the actual production process. The method is achieved through the following steps of preprocessing, rice bran water washing, separation and purification, and accordingly the rice bran protein with the arsenic removed is acquired. The method of removing the arsenic from the ice bran protein through the water washing method is obvious in arsenic removing effect, the number of arsenic residues in the ice bran protein is obviously reduced, water generated after arsenic removing can be recycled, utilization efficiency of resources is improved, energy is saved, the environment is protected, and the water is free of poison and pollution. The arsenic content of the acquired ice bran protein is 0.22ppm, and the protein loss ratio is 1.3%. The method for removing the arsenic from the rice bran is high in stability and capable of being continuously operated for a long time and being operated in a large-scale industrialized mode.

Description

technical field [0001] The invention relates to a method for removing arsenic content in rice bran by washing with water. Background technique [0002] The biological potency (PER) of rice bran protein is 2.0~2.5, which is similar to casein in milk (PER is 2.5), and its nutritional value is comparable to that of egg protein. Rice bran protein, as a high-quality plant protein resource with complete essential amino acids, high biological potency, low allergies, and good digestibility, can be used as a protein raw material for the production of baby food; rice bran protein can be used to produce flavor peptides that can replace sodium glutamate; protein hydrolyzate can It is used to control food allergies and to treat pancreatitis, small bowel syndrome, and Crohn's disease. In recent years, with the rapid development of industrial and agricultural production, arsenic and its compounds, such as the content of inorganic arsenic in rice in some areas, are relatively high, which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J3/14
Inventor 于殿宇张晓波江连洲
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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