CN1293099C - Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch - Google Patents
Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch Download PDFInfo
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- CN1293099C CN1293099C CNB2004100101047A CN200410010104A CN1293099C CN 1293099 C CN1293099 C CN 1293099C CN B2004100101047 A CNB2004100101047 A CN B2004100101047A CN 200410010104 A CN200410010104 A CN 200410010104A CN 1293099 C CN1293099 C CN 1293099C
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Abstract
The present invention relates to production technology for extracting superfine starch by using overflow objects generated in the process of producing wheat starch, which comprises the following steps: (1) collecting overflow objects which contain small granule starch and other materials and are generated in the process of producing wheat starch; (2) concentrating collected overflow objects of which the concentration is in a scope ranging from 10 to 15%; (3) adjusting concentrated overflow objects of which pH value is in a scope ranging from 3.0 to 3.5; (4) adding cellulose composite enzymes of which the solid weight is in a scope ranging from 0.5 to 1.0/1000 in the concentrated overflow objects so as to carry out stirring and thermal insulation for 1 to 3 hours at 35 to 55 DEG C; (5) separating theoverflow objects to form a solid state and injecting clear water so as to carry out centrifugal cleaning; (6) finally, carrying out drying processing for separated superfine starch. The grain diameter of about 90% of superfine starch extracted by the technology of the present invention is in a scope ranging from 2 to 8 mu m, the grain diameter which is less than 11.11 mu m accounts for 93.11%, and the maximal does not exceed 18.98 mu m.
Description
Technical field
The present invention relates to a kind of and starch content low, particle thinner, difficult isolating material extract ultra-fine starch technology low with the concentration that produces in the wheat starch production process.
Background technology
Smaller because of ultra-fine starch granules, its purposes is more extensive, mainly shows the following aspects:
1, is used as the main material of filling of commixed type biodegradable plastic film.Ultra-fine starch can satisfy the requirement than film production, and the maximum particle diameter of control starch granules can improve the smoothness on film surface, improves heat sealer and printing, and it is more accurate that thickness is detected.Moreover, because ultra-fine starch good dispersity, can in film-forming process, strengthen addition, because the starch addition is big and good dispersity, so make the cavity that stays increase several magnitude in that biological degradation takes place, make PE be more prone to oxidative degradation thereby caused surface-area to increase than adding common starch.
2, make ultra-fine starch polymer.Replace carbon black or silicon-dioxide, can obviously reduce the rolling resistance of tire as the tire filler.According to Italian Goodrich company introduction, adopting the Biotred tire of this new filler is the tire comparison of filler with adopting silicon-dioxide, and rolling resistance can reduce by 25%, fuel can save 5%, be equivalent to whenever travel 1km, can discharge 7 gram CO2 less, the life-span can prolong 19%.Can reduce noise and brake tractive force in addition.
3, make noncarbon recording paper and printer paper etc.Starch granules is on the surface of the molten pearl of the carbon that packing is arranged outward attached to paper.The starch granulosa shields to the molten pearl of carbon, and the anti-molten pearl of blocking is broken, till being subjected to the nib compressing.Because ultra-fine starch granules is smaller, more even with the molten pearl ratio of mixture of carbon, the paper of making has pull resistance, slipperiness and writes characteristics such as harmony.In addition, ultra-fine starch can also be used on the industries such as makeup, fat substitutes, modified starch, weaving, medicine, coating, tamanori.
Produce ultra-fine starch at present both at home and abroad and how to carry out mechanical crushing method with other macrobead starch, only broken ton cost just increases about 800 yuan.Ultra-fine starch granularity skewness with crush method production.Be example with Weifang production broken corn fecula now, detect through BT-9300 type laser particle size distribution instrument that particle diameter only accounts for 75.08% less than 11.11 μ m's, that maximum is 26.17 μ m.
The overflow substance contents on dry basis that produces in the wheat starch production process is generally 3～5%, pure starch is 65～75% in the butt, and protein content is 8～10%, and poly-pentose content is 3～6%, 10～15% is soluble substance, and 2～4% is fat, fiber, ash and other materials.Because the starch overwhelming majority exists with combined with albumen, poly-pentose in this product, so refining very big difficulty of existence and cost are very high.Handle for this overflow substance, generally use following mode both at home and abroad:
1, directly as discharge of wastewater, increased the water treatment expense greatly, in solid content 3%, after anaerobic-aerobic was handled, probably about 8 yuan, ton butt benefit then reached-267 yuan to ton wastewater treatment expense.
2, spraying drying is as the feed weighting material, and still in 3% butt, ton finished product expense is roughly about 2000 yuan, if with 1600 yuan of/ton sales, the ton benefit is-400 yuan.
3, mix raw materials for production with other starch as leavened prod, because of starch in it mostly and materials such as poly-pentose, albumen exist with combined, the pulverized sugar transformation efficiency is very low, has increased stable cost indirectly.
Summary of the invention
The object of the present invention is to provide a kind of characteristic of utilizing the wheat starch overflow substance to contain fecula, by removing the combined structure, reduce viscosity and then isolating the production technique of ultra-fine starch.
For achieving the above object, the present invention adopts following technical scheme: a kind of production technique of utilizing the overflow substance that produces in the wheat starch production process to extract ultra-fine starch has following steps:
(1) overflow substance that contains starch granule and other materials that produces in the wheat starch production process is collected;
(2) the overflow substance concentration of collecting is concentrated into weight percent concentration 10%～15%;
(3) adjust pH value to 3.0～3.5 that concentrate the back overflow substance;
(4) has continuity because of Starch Production, the starch temperature can continue to raise, temperature of charge after concentrating adds the cellulose complex enzyme that concentrates solid substance weight 0.5～1.0 ‰ in the overflow substance of back this moment generally more than 37 ℃, stirs insulation 1～3 hour down at 35～55 ℃;
Inject clear water when (5) overflow substance being separated to solid-state shape and carry out eccentric cleaning;
(6) at last isolated ultra-fine starch is carried out drying treatment.
In step (2), adopt supercentrifuge that the overflow substance of collecting is concentrated.
In step (3), the pH value adjustment that concentrates the back overflow substance is to carry out SO by concentrating the back material
2Absorption realizes.
Described cellulose complex enzyme adopts poly-pentose enzyme, beta-glucanase, xylosidase or dextranase.
The present invention utilizes the wheat starch overflow substance to contain the characteristic of fecula, under PH=3.0～3.5 conditions, remove the combined structure, reduce viscosity and then isolate ultra-fine starch by adding cellulose complex enzyme, concentrating overflow substance butt yield is 5～10% (with respect to the flour butts), ultra-fine starch recoveries 〉=80% (with respect to starch in the overflow substance), product protein content≤1.0% (DS/DS), product starch particle diameter about 90% is between 2～8 μ m, particle diameter accounts for 93.11% less than 11.11 μ m's, and maximum is no more than 18.98 μ m.This method has the following advantages simultaneously: 1, owing to directly overflow substance is collected away, solved in the wheat starch production process overflow substance too much and a successional difficult problem is produced in influence.2, solved wheat starch production discharge of wastewater problem.3, solve for a long time the difficult problem of extracting of combined starch in the wheat starch production process, increased the yield of high added value starch indirectly.Compare with effluent, the overflow substance 3% is concentrated to 10%, and its light phase (be the clear liquid that overflow substance obtains after whizzer is handled, be called top stream again) can be used as the process water reuse.As present 280,000 tons of year processing whole meal flours of lotus flower group, solid content is that 3% overflow substance is produced about 650,000 tons per year, handles if walk anaerobic-aerobic, and annual cost is 5,200,000 yuan.After utilizing the present invention, expectation can be produced 1.2 ten thousand tons of ultra-fine starch per year, and the ton fringe cost is 323 yuan, consider that can produce solid content is 14.4 ten thousand tons of 2.8% waste water, the water treatment expense is 110.9 ten thousand yuan, and ultra-fine starch is by 2750 yuan/ton of present prices, and then annual return is 2801.5 ten thousand yuan.
Embodiment
Embodiment 1:
(1), receives that to produce solid content in the wheat starch production process be 993.6 tons of 3.1% overflow substance.(2), to be contained thing admittedly after utilizing supercentrifuge that overflow substance is concentrated be 226.8 tons of 10.2% (wherein starch content is 71.2%) materials, rest materials (underflow) enters starch production system as process water.(3), enriched material is carried out SO
2Absorb to pH value be 3.2.(4) this moment, temperature of charge was 38 ℃, add to concentrate behind the cellulose complex enzyme of solid substance weight 0.5 ‰ in the overflow substance of back insulated and stirred 2 hours.(5) after cleaning, the material centrifugation that will react obtains solid content and is 21.5 tons of 63.9% wet feeds.(6) wet feed that obtains after will separating carries out obtaining 15.8 tons of ultra-fine starch behind the air stream drying.Multiparity product checks: moisture content is 13.2%, protein content is 0.65%, pure starch recoveries is 81.6%, ultra-fine starch particle diameter 2～10 μ m.
Embodiment 2:
(1), receives that to produce solid content in the wheat starch production process be 993.6 tons of 3.1% overflow substance.(2), to be contained thing admittedly after utilizing supercentrifuge that overflow substance is concentrated be 226.8 tons of 12% (wherein starch content is 79.4%) materials, rest materials (underflow) enters starch production system as process water.(3), enriched material is carried out SO
2Absorb to pH value be 3.0.(4) this moment, temperature of charge was 35 ℃, add to concentrate behind the cellulose complex enzyme of solid substance weight 0.8 ‰ in the overflow substance of back insulated and stirred 1 hour.(5) after cleaning, the material centrifugation that will react obtains solid content and is 18.4 tons of 65.2% wet feeds.(6) wet feed that obtains after will separating carries out obtaining 13.8 tons of ultra-fine starch behind the air stream drying.Multiparity product checks: moisture content is 13.2%, protein content is 0.65%, pure starch recoveries is 81.6%, ultra-fine starch particle diameter 2～10 μ m.
Embodiment 3:
(1), receives that to produce solid content in the wheat starch production process be 993.6 tons of 3.1% overflow substance.(2), to be contained thing admittedly after utilizing supercentrifuge that overflow substance is concentrated be 117.8 tons of 15% (wherein starch content is 71.2%) materials, rest materials (top stream) enters starch production system as process water.(3), enriched material is carried out SO
2Absorb to pH value be 3.5.(4) this moment, temperature of charge was 55 ℃, add to concentrate behind the cellulose complex enzyme of solid substance weight 1 ‰ in the overflow substance of back insulated and stirred 3 hours.(5) after cleaning, the material centrifugation that will react obtains solid content and is 19.1 tons of 64.8% wet feeds.(6) wet feed that obtains after will separating carries out obtaining 14.3 tons of ultra-fine starch behind the air stream drying.Multiparity product checks: moisture content is 13.2%, protein content is 0.65%, pure starch recoveries is 81.6%, ultra-fine starch particle diameter 2～10 μ m.
Cellulose complex enzyme among the above embodiment is non-starchiness class polysaccharide decomposing enzyme, can adopt wherein a kind of or wherein several compound in poly-pentose enzyme, beta-glucanase, xylosidase, the dextranase.
Claims (4)
1, a kind of production technique of utilizing the overflow substance that produces in the wheat starch production process to extract ultra-fine starch is characterized in that having following steps:
(1) overflow substance that contains starch granule and other materials that produces in the wheat starch production process is collected;
(2) the overflow substance concentration of collecting is concentrated into weight percent concentration 10%～15%;
(3) adjust pH value to 3.0～3.5 that concentrate the back overflow substance;
(4) add the cellulose complex enzyme that concentrates solid substance weight 0.5～1.0 ‰ in the overflow substance of back this moment, stir insulation 1～3 hour down at 35～55 ℃;
Inject clear water when (5) overflow substance being separated to solid-state shape and carry out eccentric cleaning;
(6) at last isolated ultra-fine starch is carried out drying treatment.
2, production technique as claimed in claim 1 is characterized in that, in step (2), adopts supercentrifuge that the overflow substance of collecting is concentrated.
3, production technique as claimed in claim 1 is characterized in that, in step (3), the pH value adjustment that concentrates the back overflow substance is to carry out SO by concentrating the back material
2Absorption realizes.
4, production technique as claimed in claim 1 is characterized in that, described cellulose complex enzyme adopts poly-pentose enzyme, beta-glucanase, xylosidase or dextranase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100101047A CN1293099C (en) | 2004-03-04 | 2004-03-04 | Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100101047A CN1293099C (en) | 2004-03-04 | 2004-03-04 | Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch |
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| Publication Number | Publication Date |
|---|---|
| CN1663964A CN1663964A (en) | 2005-09-07 |
| CN1293099C true CN1293099C (en) | 2007-01-03 |
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| CNB2004100101047A Expired - Fee Related CN1293099C (en) | 2004-03-04 | 2004-03-04 | Method for extracting ultrathin starch from overflow materials produced in the process of preparing wheat starch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455158A (en) * | 1935-06-29 | 1936-10-15 | Merco Centrifugal Separator Co | Improvements in or relating to the manufacture of starch |
| CN1065463A (en) * | 1991-03-29 | 1992-10-21 | 多尔奥利弗股份有限公司 | Produce the corn wet milling process of starch |
| EP0517965A1 (en) * | 1991-06-13 | 1992-12-16 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | Hydrocyclone for recovering potato starch |
| CN1148571A (en) * | 1996-07-20 | 1997-04-30 | 南宁正宇高新技术有限责任公司 | Method for treating waste industrial water from light industry by using burning boiler |
-
2004
- 2004-03-04 CN CNB2004100101047A patent/CN1293099C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455158A (en) * | 1935-06-29 | 1936-10-15 | Merco Centrifugal Separator Co | Improvements in or relating to the manufacture of starch |
| CN1065463A (en) * | 1991-03-29 | 1992-10-21 | 多尔奥利弗股份有限公司 | Produce the corn wet milling process of starch |
| EP0517965A1 (en) * | 1991-06-13 | 1992-12-16 | Coöperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten 'AVEBE' B.A. | Hydrocyclone for recovering potato starch |
| CN1148571A (en) * | 1996-07-20 | 1997-04-30 | 南宁正宇高新技术有限责任公司 | Method for treating waste industrial water from light industry by using burning boiler |
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| CN1663964A (en) | 2005-09-07 |
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