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Separation and purification process of wheat flour starch granule

A technology of wheat flour and starch granules, which is applied in food preparation, food science, application, etc., can solve the problem of lack of particle separation research, and achieve the effects of simple process, short production cycle and low production cost

Inactive Publication Date: 2011-05-25
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the relevant academic reports have been published at home and abroad, there is basically no research on finer particle size separation.

Method used

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  • Separation and purification process of wheat flour starch granule
  • Separation and purification process of wheat flour starch granule
  • Separation and purification process of wheat flour starch granule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Extraction of wheat flour starch granules

[0035] 1) Protein removal: Refer to the national standard method GB / T 14608-93 to machine wash the flour with a gluten analyzer, and separate the protein in the form of gluten. Centrifuge at 2500×g for 10-20min to discard the supernatant to obtain crude starch;

[0036] 2) Washing: Suspend the crude starch with 10 times the weight of deionized water, centrifuge at 2500×g for 10-20 minutes, discard the upper liquid, and repeat three times to remove residual sodium chloride and water-soluble protein;

[0037] 3) Filtration I: Suspend the crude starch with 10 times the weight of deionized water, pass the suspension through a 45μm screen to remove residual crude fibers and other large particles of impurities, collect and filter the crude starch suspension, centrifuge at 2500×g for 10-20min , Discard the upper liquid;

[0038] 4) Filtration II: Suspend the crude starch with 10 times the weight of absolute ethanol, pass the suspen...

Embodiment 2

[0040] Example 2 Separation of A-, B-type starch granules

[0041] The wheat flour extracted starch grains of claim 1 were suspended in deionized water at a mass-volume ratio of 1:8 for 1 hour, and 5 / 9 volume of the upper suspension was taken and repeated nine times. The upper suspension was centrifuged at 2500×g for 20 min to obtain the precipitate It is B-type starch granules, and the lower layer is A-type starch granules.

[0042] Experimental analysis shows that: for every 1 kg of wheat flour extracted starch granules of claim 1, 780.11 g of A-type starch granules, 218.78 g of B-type starch granules, A-type starch granules and B-type starch granules can be separated using this technical solution. The yield ratio of starch granules is 3.9:1.1. The process is basically no loss, and the process flow is simple, easy to industrialize, and consumes less energy.

Embodiment 3

[0043] Example 3 Classification of A-type starch granules

[0044] Under the condition of 0℃, the A-type starch granule suspension was suspended in deionized water at a mass-volume ratio of 1:60, and passed through a 25μm sieve. Using a wet and dry sieving machine to shake at 2800 times / min amplitude for 2 minutes, Sieve starch granules G5, filter the suspension and then pass through a 15.8μm sieve. Use a wet and dry sieving machine to shake at an amplitude of 2800 times / min for 5 minutes to obtain unsieved starch granules G4. The filtered suspension is centrifuged at 2500×g for 20 minutes The resulting starch granules G3.

[0045] Experimental analysis shows that: for every 1 kilogram of A-type starch granules of claim 2, starch granules G3, G4 and G5 can be separated by using this technical solution to be 221.30, 507.61, 266.14 grams, respectively. The process flow is simple, easy to industrialize, and energy-consuming. less.

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Abstract

The invention relates to a separation and purification process for wheat flour starch grains, which belongs to the field of farm product deep processing. The separation and purification process comprises the following three technological flows: purifying wheat flour starch grains; separating A- and B- starch grains; and subdividing the A- and B- starch grains, wherein the technological process ofpurifying the wheat flour starch grains is to wash off protein through a gluten washer, wash and filter through deionized water, and filter and refine through absolute ethyl alcohol; the technological process of separating the A- and B- starch grains is to precipitate the wheat starch grains suspending in the deionized water and take the suspension liquid on the upper layer; and the technologicalprocess of subdividing the A-, B- starch grains is to screen the A-, B- starch grains suspending in the deionized water through a sieve with certain specifications and use a sieving machine for oscillation. The separation and purification process has the extraction efficiency of wheat flour starch grains above 99 percent, and has the advantages of simple technological processes, and good repeatability and reproducibility, thereby enabling researchers and engineers to have an accurate understanding of the size characteristic of the starch grains and the impact of the size characteristic on related products. The product can be also applied to scientific research and industrial production.

Description

1. Technical Field [0001] The invention relates to a process for separating and purifying wheat flour powder starch granules, and belongs to the field of deep processing of agricultural products. Specifically, it is a process in which pure starch granules are extracted from wheat, and then separated into A- and B-type starch granules, and finally the A- and B-type starch granules are subdivided into different granular starch granules. Workers and engineers have a more accurate understanding of the particle size characteristics of starch granules and their impact on related products. The final graded and purified starch granules can also be used in food processing, starch manufacturing, medicine, textiles, cosmetics and other industries according to their physical and chemical properties. 2. Background technology [0002] Wheat starch is a storage starch in the endosperm of Triticum aestivum L. It exists in the endosperm cells in a granular state and accounts for about 65% of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/09C08B30/04A23L29/30
Inventor 田益华张传辉姜东戴廷波荆奇曹卫星
Owner NANJING AGRICULTURAL UNIVERSITY
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