Mechanical separation enriching method for wheat-bran aleuronic cells

A technology of aleurone cell and mechanical separation, applied in the field of separation and enrichment of aleurone cells, dry mechanical separation and enrichment of aleurone cells in wheat bran, which can solve the problem that the complete structure of cells is easily destroyed and reduces the nutritional value of aleurone products , nutrient loss and other issues, to achieve the effect of retaining nutritional value, aleurone cell structure integrity, and avoiding the loss of nutrients

Active Publication Date: 2013-11-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since most of the nutrients in the aleurone layer of wheat bran are water-soluble substances, the above-mentioned wet or wet-dry processing will cause a large loss of nutrients (especially B vitamins), greatly reducing the nutritional value of the aleurone finished product, and the cells are intact The structure is easy to be destroyed, and it is also accompanied by disadvantages such as cumbersome process, complicated equipment, large energy consumption and high cost

Method used

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  • Mechanical separation enriching method for wheat-bran aleuronic cells
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  • Mechanical separation enriching method for wheat-bran aleuronic cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Drying: dry the wheat bran and control its moisture content to 10%;

[0036] (2) Pre-grinding: Use a swing-type 500g stainless steel cabin traditional Chinese medicine grinder (product of Shanghai Qijian Bingdu Electric Co., Ltd., model: Q-500B3, speed 26000 rpm) to grind the dried wheat bran in step (1) 2min, pass through a 40-mesh vibrating sieve (product of Shanghai Luda Experimental Instrument Co., Ltd., model ZBSX-92A), and take the sieve;

[0037] (3) Peeling and crushing: such as figure 2 As shown, the sieve obtained in step (2) is transported into a closed crushing chamber 3 through a feeding hopper 1 and a screw feeder 2 for peeling and crushing treatment. The crushing chamber 3 includes a hammer impact crushing disc 4 and a turbine classifier 5. The inner wall of the crushing chamber 3 is equipped with a lining plate with teeth, grooves or patterns 6. The diameter of the crushing disc of the hammer mill 4 is 170mm, and the number of hammer heads 7 is 4. ...

Embodiment 2

[0041] (1) Drying: dry the wheat bran and control its moisture content to 8%;

[0042] (2) Pre-crushing: use a swinging 500g stainless steel engine room traditional Chinese medicine grinder (same as Example 1) to grind the dried wheat bran in step (1) for 1 min, pass through a 40-mesh vibrating sieve (same as Example 1), and take Oversize;

[0043] (3) Peeling and crushing: the equipment used and its specific working process are the same as in Example 1, the difference is that the hammer head speed is adjusted to 40m / s, the turbine classifier 5 classification wheel speed is 2600rpm, and the feed rate is 900g / h;

[0044] (4) Screening and separation: the peeled and pulverized material obtained in step (3) is passed through a negative pressure fan (air volume 220 m 3 / h) is sent out, and collected by a cyclone separator, sieved and separated by a vibrating sieve (same as in Example 1), and a sieved sample with a particle size of 100-200 μm is taken to obtain aleurone finished p...

Embodiment 3

[0047] (1) Drying: dry the wheat bran and control its moisture content to 10%;

[0048] (2) Pre-crushing: use a swinging 500g stainless steel engine room traditional Chinese medicine grinder (same as Example 1) to grind the dried wheat bran in step (1) for 1 min, pass through a 40-mesh vibrating sieve (same as Example 1), and take Oversize;

[0049] (3) Peeling and crushing: the equipment used and its specific working process are the same as in Example 1, the difference being that the rotating speed of the hammerhead is adjusted to 35m / s, the rotating speed of the 5 classifying wheels of the turbine classifier is 3000rpm, and the feed rate is 1000g / h;

[0050] (4) Screening and separation: the peeled and pulverized material obtained in step (3) is passed through a negative pressure fan (air volume 180 m 3 / h) sent out, and collected by a cyclone separator, separated by sieve powder through a vibrating sieve (same as in Example 1), and a sieved sample with a particle size of 1...

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Abstract

The invention discloses a mechanical separation enriching method for wheat-bran aleuronic cells. The method comprises the following steps: (1) drying wheat bran to a water content of 8-10%; (2) precrushing: crushing for 1-3 min by a traditional Chinese medicine crusher, sieving through a vibrating screen of 40-60 meshes, taking the oversize material; (3) stripping and crushing: pouring the oversize material obtained in the step (2) into a closed-type crushing chamber for stripping and crushing, wherein the crushing chamber comprises a hammer impact crush disk with a diameter of 150-500 mm and a turbine classifier with a grading wheel rotation speed of 2000-3000 rpm, and the hammer impact crush disk is provided with 4-12 hammerheads each with tooth-form edge and each with a rotation speed of 35-45 m/s; and (4) screening for separation. The method of the invention is simple in technology, low in production cost and small in energy consumption, and is capable of preparing the aleuronic cell product with high enriching purity, high nutritive value and integrated cell structures.

Description

technical field [0001] The invention relates to a method for separating and enriching aleurone cells from wheat bran, in particular to a method for dry mechanically separating and enriching aleurone cells in wheat bran, and belongs to the technical field of wheat intensive processing. Background technique [0002] Cereals have been the most trusted food for thousands of years. In particular, bran contains a lot of components that are beneficial to the human body, but it is discarded by humans because of its rough taste. It is a pity. my country is a big wheat-growing country, and more than 20 million tons of wheat bran can be exploited every year, but it is generally used as animal feed, and the nutritional value of wheat bran has not been fully utilized. Wheat bran is mainly composed of exocarp, middle layer (endocarp, seed coat, nucellus), aleurone layer and a small amount of endosperm, among which, the microstructure of aleurone cell mass is as follows: figure 1 shown. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/10A23L1/29B02C21/00B02C23/12B02C23/14A23L7/10A23L33/00
Inventor 陈正行徐逸木李永富王莉于秋生王韧
Owner JIANGNAN UNIV
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