CN103385408A - Mechanical separation enriching method for wheat-bran aleuronic cells - Google Patents
Mechanical separation enriching method for wheat-bran aleuronic cells Download PDFInfo
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- CN103385408A CN103385408A CN2013102757670A CN201310275767A CN103385408A CN 103385408 A CN103385408 A CN 103385408A CN 2013102757670 A CN2013102757670 A CN 2013102757670A CN 201310275767 A CN201310275767 A CN 201310275767A CN 103385408 A CN103385408 A CN 103385408A
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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
The present invention relates to the method for separation and concentration aleurone cells from wheat bran, relate in particular to the method for aleurone cells in dry method mechanical separation and concentration wheat bran, belong to wheat intensive processing technical field.
Background technology
Cereal is the food of human beings trust for thousands of years, and is special, contains a large amount of components useful to human body in wheat bran, but because of coarse mouthfeel, by the mankind, given up, very unfortunate.China is wheat planting big country, but every year exploitation wheat bran reach more than 2,000 ten thousand tons, but generally as animal feed, used, do not given play to the nutritive value in wheat bran fully.Wheat bran mainly is comprised of exocarp, intermediate layer (endocarp, kind skin, megarchidium layer), aleurone and a small amount of endosperm, and wherein, the aleurone cells rolls into a ball microstructure as shown in Figure 1.From the nutrition angle analysis, aleurone is the composition that is rich in nutritive value in wheat seed.Contain vitamin, mineral matter, aliphatic acid, plant protective material and trophic fiber in aleurone, especially protein content is quite high, contain the amino acid such as methyllanthionine, methionine, valine, wherein arginine content is the highest, and these protein can be used as gluten protein and supplement trim amino acid material; Mineral matter in wheat grain more than 80% all concentrates on aleurone, and phosphorus is the main mine material that is present in aleurone, and, greatly mainly with the form existence of phytate, simultaneously, also contains the mineral elements such as a large amount of potassium, magnesium, calcium, iron, zinc in aleurone; The aleurone cells contains a large amount of thiamines (vitamin B1), riboflavin (vitamin B2), nicotinic acid (nicotinic acid), pyridoxic acid (vitamin B6), pantothenic acid (vitamin B5), folic acid etc., these B family vitamins are essential by human body, lack and can produce athlete's foot; Also has the various plants protective substance in aleurone; comprise phenolic compound, lignan, phytosterol; these protective substance have very strong oxidation resistance; be conducive to human body metabolism and anti-aging in advance; to reducing playing an important role of constipation, hemorrhoid, intestinal cancer, and the diseases such as high cholesterol, artery sclerosis had significant curative effect.Due to the aleurone tight bond in intermediate layer, separating difficulty is very large in powder process processing, therefore, the aleurone that has nutritive value in wheat bran is separated, return and add agent or nutritious supplementary pharmaceutical to improve the added value of wheat bran as food, have society and economic worth.
Wheat bran aleurone cells isolation technics is limited at present, and the large-scale production that not yet has high input.Be ground to the technique of normal employing, but this method is limited to the aleurone separation degree, also can makes the loss of wheat aleurone, product purity is low.Present stage, comparatively advanced aleuron extractive technique was was mainly researched and developed by Switzerland Burl Corp, the patent of the publication number CN1447653 of the said firm " is extracted the method for aleuron " and is proposed to peel off the aleuron particle by biological enzymatic wet method and the combination of gentle mechanical disruption from wheat bran, recycling wet method or wet method are completed in conjunction with dry method.Wet method processing comprises that mainly wheat bran enters the water heating, add corresponding enzyme liquid, destroy each structure sheaf active force under the effect of enzyme, make the aleurone cells use independent in conjunction with the mechanical damage mode again or the cell cluster form is separated as tissue from wheat bran, with residue filter, in the cellular content pass into solution, then by filtering, dialysis, the method enrichments such as counter-infiltration; Wet method is mainly the dry method separating-purifying in conjunction with dry process, comprises and adopts special mill, will separate with the pericarp layer by aleurone after enzyme is processed, and then, separating material is through the purification segregation in some roads, gained
Dry separating material adopts pair roller flour mill (DNWA of Burl Corp type pair roller flour mill) to carry out Crushing of Ultrafine again, and fine wheat bran separates by high-voltage electrostatic field finally.
Because wheat bran aleurone nutritional labeling mostly is water-soluble substances, above-mentioned wet method or wet dry and hard legal processing will cause the loss of a large amount of nutritional labelings (especially B family vitamin), greatly reduce the nutritive value of aleuron finished product, and the cell complete structure is easily destroyed, also follows that technique is loaded down with trivial details, equipment is complicated, energy consumption is large, the high in cost of production drawback.
Summary of the invention
In view of the foregoing defects the prior art has, the applicant, through Improvement, provides a kind of wheat bran skin aleurone cells's mechanical method for separating and concentrating.The method technique is simple, production cost is low, energy consumption is little, can prepare have high enrichment purity, high nutritive value, aleurone cells's product that eucaryotic cell structure is complete.
Technical scheme of the present invention is as follows:
A kind of wheat bran aleurone cells's mechanical method for separating and concentrating, for processing raw material, comprises following processing step with wheat bran:
(1) drying: the airing wheat bran, controlling its moisture is 8 ~ 10%;
(2) precomminution: adopt medicinal herb grinder to pulverize 1 ~ 3min to dried wheat bran in step (1), cross 40 ~ 60 order vibratory sieves, get oversize;
(3) peel off pulverizing: step (2) gained oversize is dropped into a closed type pulverizing chamber peel off pulverization process, comprise hammer impact comminution dish and turbine classifier in described pulverizing chamber, the shock pulverization by described hammer impact comminution dish upper ram and the sizing screening effect of described turbine classifier reach described oversize and peel off grinding particle size;
Described hammer impact comminution dish diameter is 150 ~ 500mm, establishes altogether 4 ~ 12 of tups, and the tup edge is profile of tooth, and the tup rotating speed is 35 ~ 45m/s;
The grading wheel rotating speed of described turbine classifier is 2000 ~ 3000rpm;
(4) screening separates: collect step (3) gained and peel off crushed material and cross vibratory sieve, collect the screening sample of 100 ~ 200 μ m, obtain aleurone cells's finished product.
Its further technical scheme is:
The described medicinal herb grinder specification of step (1) is maximum throughput 500g, rotating speed 26000rpm.
The device that the described precomminution of step (2) is adopted also comprises that other carries out the device of crushing material with strong shearing force and impact form.
The described rate of feeding of step (3) is 500 ~ 2000g/h.
The described pulverizing chamber inwall of step (3) is equipped with the liner plate of surface band tusk, groove or decorative pattern, distance 3 ~ 8mm between described liner plate and tup.
Step (4) gained is peeled off crushed material and is sent through negative-pressure air fan, and by cyclone separator, is collected, and described negative-pressure air fan air quantity is controlled to be 180 ~ 250m
3/ h.
Step (4) gained aleuron finished product is carried out step (3) ~ described operation of step (4) again.
The inventive method specific works principle and beneficial effect are as follows:
The present invention with the wheat bran of certain water content for processing raw material, at first, medicinal herb grinder produces strong shearing force and impact pulverization to it, strong friction occurs between wheat bran and tup and wheat bran and wheat bran at short notice and give birth to heat, this low-grade fever environment can not only keep wheat bran dry, be conducive to the reservation of nutritional labeling, help simultaneously getting loose of endosperm in wheat bran, that the later stage is peeled off pulverization process is most important between each structure sheaf of wheat bran and the tiny stress crack that produces between gluten cell in this process.
subsequently, the wheat bran of precomminution enters the closed type pulverizing chamber, being in hammer impact comminution dish tup frontal impact power and side cuts under the repeated multiple times effect of frictional force, because the adhesion between each structure sheaf of wheat bran is different, (pulverize by the shock that comprises wheat bran and tup at the shock crush force of particular suitable for aleurone, the shock of wheat bran and liner plate is pulverized, the friction of wheat bran self is pulverized, its effect size is by charging rate, the grating disk diameter, the decisions such as tup number and tup rotating speed) and under Action of Gravity Field separate from the wheat bran intermediate layer, reach the wheat bran of peeling off grinding particle size and obtain sorting by the certain sizing screening effect of turbine classifier (by the grading wheel rotating speed, being determined) again, and being centrifuged power, gets rid of to baffle liner in the wheat bran that does not reach granularity requirements, enter pulverizing chamber and continue to peel off pulverizing until meet the requirements.
Finally, by vibratory sieve, further screen and isolate the screening thing of granularity between 100 ~ 200 μ m, can obtain aleurone cells's finished product of high enrichment purity, high nutritive value.
The present invention adopts omnidistance dry method mechanical method, and not only technique is simple, cost is low, energy consumption is little, and the loss of thoroughly having avoided wet method to process the nutriment that causes, has kept to greatest extent the wheat bran nutritive value; In above-mentioned whole process, place mat each other between each step, wheat bran is stressed progressive, aleurone obtains progressively separation and concentration, after testing, and the made aleurone cells's structural integrity of the present invention, aleurone is peeled off satisfactory for result, aleuron enrichment purity high (in butt,＞67%), compare with commercial like product and have obviously higher nutritive value.
Description of drawings
Fig. 1 rolls into a ball microscopic examination figure for the aleurone cells.
Fig. 2 peels off the disintegrating apparatus structural representation in the embodiment of the present invention, wherein, and 1: feeding hopper, 2: feeding screw, 3: pulverizing chamber, 4: hammer impact comminution dish, 5: turbine classifier, 6: liner plate, 7: tup, 8: baffle liner.
Fig. 3 is the embodiment of the present invention 1 aleurone cells's ordinary optical microscope microscopy result.
Fig. 4 is the embodiment of the present invention 1 aleurone cells's fluorescence microscope microscopy result, and wherein, brilliant white partly is kind of skin or pericarp cellulose, and lead is partly the aleurone cells.
The specific embodiment
Below in conjunction with accompanying drawing, and by embodiment, the present invention is specifically described.
If no special instructions, described each test method of following examples is this area conventional method, and related each instrument and equipment is this area conventional equipment.
Use the 1kg wheat bran as processing raw material.
(1) drying: the airing wheat bran, controlling its moisture is 10%;
(2) precomminution: (Shanghai flag arrow is iced all Electrical Appliances Co., Ltd's products to adopt swing 500g stainless steel cabin medicinal herb grinder, model: Q-500B3, rotating speed 26000 rpm) dried wheat bran in step (1) is pulverized 2min, (upper sea route reaches laboratory apparatus Co., Ltd product to cross 40 order vibratory sieves, model ZBSX-92A type), get oversize;
(3) peel off pulverizing: as shown in Figure 2, step (2) gained oversize is conveyed into a closed type pulverizing chamber 3 through feeding hopper 1 and feeding screw 2 peels off pulverization process, comprise hammer impact comminution dish 4 and turbine classifier 5 in pulverizing chamber 3, pulverizing chamber 3 inwalls are equipped with the liner plate 6 with tusk, groove or decorative pattern, beater grinder 4 grating disk diameter 170mm, tup 7 numbers are 4, tup 7 edges are profile of tooth, between tup 7 and liner plate 6 apart from 3mm, regulate tup rotating speed 37m/s, turbine classifier 5 grading wheel rotating speed 2800rpm, charging rate 750g/h; Its specific works process is as follows: the wheat bran of input pulverizing chamber 3 and tup 7 and liner plate 6 clash into, friction between wheat bran self is clashed in addition, make aleurone separate from the wheat bran intermediate layer, thereby reach the purpose of peeling off pulverizing, the material that reaches the grinding particle size requirement can pass through grading wheel, the material that does not reach granularity requirements will be centrifuged power and get rid of in baffle liner 8, again fall into pulverizing chamber 3 and continue to peel off pulverizing.
(4) screening separates: step (3) gained is peeled off crushed material through negative-pressure air fan (air quantity 240 m
3/ h) send, and by cyclone separator, collected, sieve separation by vibratory sieve (upper sea route reaches laboratory apparatus Co., Ltd product, model ZBSX-92A type), get the screening sample of granularity 100 ~ 180 μ m, obtain the aleuron finished product.
Use the 1kg wheat bran as processing raw material.
(1) drying: the airing wheat bran, controlling its moisture is 8%;
(2) precomminution: adopt swing 500g stainless steel cabin medicinal herb grinder (with embodiment 1) to pulverize 1min to dried wheat bran in step (1), cross 40 order vibratory sieves (with embodiment 1), get oversize;
(3) peel off pulverizing: device therefor and specific works process thereof are with embodiment 1, and difference is to regulate tup rotating speed 40m/s, turbine classifier 5 grading wheel rotating speed 2600rpm, charging rate 900g/h;
(4) screening separates: step (3) gained is peeled off crushed material through negative-pressure air fan (air quantity 220 m
3/ h) send, and by cyclone separator, collected, (with embodiment 1) sieves separation by vibratory sieve, gets the screening sample of granularity 100 ~ 200 μ m, obtains the aleuron finished product.
Use the 1kg wheat bran as processing raw material.
(1) drying: the airing wheat bran, controlling its moisture is 10%;
(2) precomminution: adopt swing 500g stainless steel cabin medicinal herb grinder (with embodiment 1) to pulverize 1min to dried wheat bran in step (1), cross 40 order vibratory sieves (with embodiment 1), get oversize;
(3) peel off pulverizing: device therefor and specific works process thereof are with embodiment 1, and difference is to regulate tup rotating speed 35m/s, turbine classifier 5 grading wheel rotating speed 3000rpm, charging rate 1000g/h;
(4) screening separates: step (3) gained is peeled off crushed material through negative-pressure air fan (air quantity 180 m
3/ h) send, and by cyclone separator, collected, sieve powder by vibratory sieve (with embodiment 1) and separate, get the screening sample of granularity 100 ~ 200 μ m, obtain the aleuron finished product.
Embodiment 4
Use the 1kg wheat bran as processing raw material.
(1) drying: the airing wheat bran, controlling its moisture is 8%;
(2) precomminution: adopt swing 500g stainless steel cabin medicinal herb grinder (with embodiment 1) to pulverize 1.5min to dried wheat bran in step (1), cross 40 order vibratory sieves (with embodiment 1), get oversize;
(3) peel off pulverizing: device therefor and specific works process thereof are with embodiment 1, and difference is to regulate tup rotating speed 35m/s, turbine classifier 5 grading wheel rotating speed 2500rpm, charging rate 2000g/h;
(4) screening separates: step (3) gained is peeled off crushed material through negative-pressure air fan (air quantity 180 m
3/ h) send, and by cyclone separator, collected, sieve powder by vibratory sieve (with embodiment 1) and separate, get the screening sample of granularity 100 ~ 200 μ m, obtain the aleuron finished product.
The aleurone product separating effect is identified
Get the made aleuron finished product of embodiment 1, with ordinary optical microscope, observe, result as shown in Figure 3, after fluorescent staining, is observed with fluorescence microscope, and result as shown in Figure 4.
By Fig. 3 and Fig. 4 as can be known, in the made aleurone product of the present invention, the cell cluster that most aleuron components form take 5 ~ 40 aleurone cells exists as unit, structural integrity, and aleurone has obtained good the separation with non-aleurone, and enrichment purity is high.
The mensuration of aleurone product nutritive index and enrichment purity
According to this area conventional detection method, Major Nutrient index and the aleuron enrichment purity of embodiment 1 ~ embodiment 3 and commercially available wheat bran aleurone cells product (GrainWise) are measured and compared.Result is referring to table 1.
Mensuration and the comparison of table 1 Major Nutrient index, aleuron enrichment purity
By table 1 data as can be known, can obtain purity by embodiment 1 method separation and concentration is 68.7% aleuron finished product (100 ~ 180 μ m), by embodiment 2(100 ~ 200 μ m) and embodiment 3(100 ~ 200 μ m) method, can obtain purity and be respectively 67.4% and 67.2% aleuron finished product, far above commercially available wheat bran aleurone product (GrainWise) (59.1%); The nutritive index (except starch and Ca) of the made wheat bran aleuron of embodiment 1 ~ embodiment 3 finished product, all apparently higher than commercially available contrast product, proves that the present invention can prepare aleurone cells's product of high-purity, high nutritive value.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive without departing from the spirit and concept in the present invention or associate, within all should thinking and being included in protection scope of the present invention.
Claims (7)
1. mechanical method for separating and concentrating of the wheat bran aleurone cells is characterized in that with wheat bran comprising following processing step for processing raw material:
(1) drying: the airing wheat bran, controlling its moisture is 8 ~ 10%;
(2) precomminution: adopt medicinal herb grinder to pulverize 1 ~ 3min to dried wheat bran in step (1), cross 40 ~ 60 order vibratory sieves, get oversize;
(3) peel off pulverizing: step (2) gained oversize is dropped into a closed type pulverizing chamber peel off pulverization process, comprise hammer impact comminution dish and turbine classifier in described pulverizing chamber, the shock pulverization by described hammer impact comminution dish upper ram and the sizing screening effect of described turbine classifier reach described oversize and peel off grinding particle size;
Described hammer impact comminution dish diameter is 150 ~ 500mm, establishes altogether 4 ~ 12 of tups, and the tup edge is profile of tooth, and the tup rotating speed is 35 ~ 45m/s;
The grading wheel rotating speed of described turbine classifier is 2000 ~ 3000rpm;
(4) screening separates: collect step (3) gained and peel off crushed material and cross vibratory sieve, collect the screening sample of 100 ~ 200 μ m, obtain aleurone cells's finished product.
2. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1, it is characterized in that: the described medicinal herb grinder specification of step (1) is maximum throughput 500g, rotating speed 26000rpm.
3. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1, it is characterized in that: the device that the described precomminution of step (2) is adopted also comprises that other carries out the device of crushing material with strong shearing force and impact form.
4. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1 is characterized in that:
The described rate of feeding of step (3) is 500 ~ 2000g/h.
5. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1 is characterized in that:
The described pulverizing chamber inwall of step (3) is equipped with the liner plate of surface band tusk, groove or decorative pattern, distance 3 ~ 8mm between described liner plate and tup.
6. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1, it is characterized in that: step (4) gained is peeled off crushed material and is sent through negative-pressure air fan, and by cyclone separator, is collected, and described negative-pressure air fan air quantity is controlled to be 180 ~ 250m
3/ h.
7. wheat bran aleurone cells's mechanical method for separating and concentrating according to claim 1, is characterized in that: step (4) gained aleuron finished product is carried out step (3) ~ described operation of step (4) again.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104171838A (en) * | 2014-07-15 | 2014-12-03 | 山东知食坊食品科技有限公司 | Wheat aleurone layer content extracted by adopting pure physical dry process |
| CN106040356A (en) * | 2016-07-20 | 2016-10-26 | 福建中科康膳生物科技有限公司 | Micron-grade wheat bran powder producing and processing device |
| CN106179595A (en) * | 2016-07-20 | 2016-12-07 | 福建中科康膳生物科技有限公司 | Micron order wheat bran processing technique |
| CN108576587A (en) * | 2018-04-11 | 2018-09-28 | 涡阳县丰华面业有限公司 | A kind of method for separating and concentrating of pure physical method extraction wheat bran aleurone layer content |
| CN110810707A (en) * | 2019-10-12 | 2020-02-21 | 江苏大学 | Method for separating buckwheat digestive-resistant endosperm cell and cotyledon nutrition powder by electric field |
| CN113941421A (en) * | 2021-10-15 | 2022-01-18 | 杭州锐健马斯汀医疗器材有限公司 | Crushing apparatus |
| CN114558661A (en) * | 2021-03-22 | 2022-05-31 | 北京工商大学 | Plant-derived material processing device, and processing method and product of wheat crop bran or whole grain flour |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104171838A (en) * | 2014-07-15 | 2014-12-03 | 山东知食坊食品科技有限公司 | Wheat aleurone layer content extracted by adopting pure physical dry process |
| CN106040356A (en) * | 2016-07-20 | 2016-10-26 | 福建中科康膳生物科技有限公司 | Micron-grade wheat bran powder producing and processing device |
| CN106179595A (en) * | 2016-07-20 | 2016-12-07 | 福建中科康膳生物科技有限公司 | Micron order wheat bran processing technique |
| CN106040356B (en) * | 2016-07-20 | 2018-06-08 | 福建中科康膳生物科技有限公司 | Micron order wheat bran produces and processes device |
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| CN108576587A (en) * | 2018-04-11 | 2018-09-28 | 涡阳县丰华面业有限公司 | A kind of method for separating and concentrating of pure physical method extraction wheat bran aleurone layer content |
| CN110810707A (en) * | 2019-10-12 | 2020-02-21 | 江苏大学 | Method for separating buckwheat digestive-resistant endosperm cell and cotyledon nutrition powder by electric field |
| CN110810707B (en) * | 2019-10-12 | 2022-11-18 | 江苏大学 | Method for separating buckwheat digestive-resistant endosperm cell and cotyledon nutrition powder by electric field |
| CN114558661A (en) * | 2021-03-22 | 2022-05-31 | 北京工商大学 | Plant-derived material processing device, and processing method and product of wheat crop bran or whole grain flour |
| CN113941421A (en) * | 2021-10-15 | 2022-01-18 | 杭州锐健马斯汀医疗器材有限公司 | Crushing apparatus |
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