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Method for extracting oat starch, protein powder and beta-glucan from oat bran

A technology of oat bran and oat protein, applied in the fields of protein powder, β-glucan, and oat starch extraction, can solve problems such as waste, increased cost, and increased difficulty in wastewater treatment, and achieve full utilization of high added value and reduce The effect of production costs

Inactive Publication Date: 2013-04-03
陈福库
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, oat bran is used to produce β-glucan at home and abroad, mostly after enzymatic hydrolysis of starch and protein, and then separating β-glucan from the filtrate, so that a large amount of starch and protein are hydrolyzed into glucose and amino acids. Into the wastewater, one is to cause waste, and the other is to increase the difficulty of wastewater treatment and increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The method for extracting oat starch, protein powder and beta-glucan from oat bran comprises the following steps:

[0024] 1. Select high-quality oat bran that meets the requirements, soak it in warm water at 40°C, the ratio of material to liquid (water) is 1:7, and use a colloid mill to refine it.

[0025] 2. Use edible soda ash (sodium carbonate) solution to adjust the slurry to PH=10, stir at room temperature for 150 minutes, and separate the solid and liquid components with a spiral sedimentation centrifuge. The solid component mainly contains starch and gluten impurities, and the liquid component mainly contains Contains protein and beta-glucan.

[0026] 3. The liquid component is adjusted to PH=4.5 with food-grade hydrochloric acid, acetic acid, and citric acid, and stirred at the same time, the protein is precipitated, and the solid and liquid components are separated by a spiral sedimentation centrifuge. The filtrate mainly contains β-glucan, and the solid The ...

Embodiment 2

[0031] Purification of oat starch: Stir the underflow starch milk separated by the main centrifuge in Step 6 of Example 1, heat it to a temperature of 50°C, add neutral protease, the amount of enzyme added is 48AU / kg, the pH value is 7.0, and the time is 60 min , the residual amount of protein in the oat starch can be reduced to about 0.6%, and it is sent to a 12-stage hydrocyclone for countercurrent washing, and the oat starch is separated, dried and pulverized to obtain refined oat starch, and the yield of refined starch is about 1% of coarse starch 95%.

Embodiment 3

[0033] Purification of oat protein: add 5 times the volume of water to the solid component (oat protein) separated in step 3 of Example 1, stir, add α-amylase, the amount of enzyme added is 48-60AU / kg, PH=5- 6. The temperature is 30-40°C and the time is 30 minutes, so that the starch is fully hydrolyzed; the hydrolyzed oat protein solution is adjusted to PH=4.5 with food-grade hydrochloric acid, and then centrifuged to obtain a slurry oat protein concentrate; the oat protein concentrate is obtained by spray drying Refined oat protein powder.

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PUM

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Abstract

The invention relates to an oat deep processing technology, and in particular relates to a method for comprehensively extracting oat starch, protein powder and beta-glucan from oat bran The method mainly comprises the following steps of: (1), immersing the oat bran, and grinding the oat bran into thick liquid; (2), separating slurry from the liquid to obtain starch; (3), adjusting the pH value of the liquid component, and precipitating to separate out oat protein; (4), separating beta-glucan from the filtrate; (5), separating and purifying the oat starch; and (6), purifying the oat protein. According to the invention, the oat bran after oat is processed into flour is adopted as the raw material; three products including the oat starch, the oat protein and the beta-glucan are obtained simultaneously through one process; the method is a reasonable way for developing the oat resource; the full availability with high additional value of resources is realized; and the production cost is reduced.

Description

technical field [0001] The invention relates to an oat deep processing technology, which is a method for extracting oat starch, protein powder and β-glucan from oat bran. Background technique [0002] Compared with other grains, oatmeal has comprehensive and high nutritional value. It ranks first in the five major nutritional indicators such as protein, fat, vitamins, mineral elements, and cellulose. Studies have shown that oatmeal contains a lot of dietary fiber, among which the water-soluble dietary fiber β-glucan has the effect of lowering blood cholesterol and blood lipid levels, which is conducive to weight loss and can effectively reduce the symptoms of diabetes. It is more suitable for heart disease patients. Diet needs. [0003] The protein content in oat grains ranks first among cereals, and can reach 13% to 20% due to different varieties. The composition of protein in oat is different from other cereal proteins. Glamin only accounts for 10% to 15% of the total p...

Claims

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Application Information

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IPC IPC(8): A23L1/09A23J1/12
Inventor 陈福库祖志东陈辰
Owner 陈福库
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