CN102443069A - Corn processing method - Google Patents
Corn processing method Download PDFInfo
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- CN102443069A CN102443069A CN2010105119108A CN201010511910A CN102443069A CN 102443069 A CN102443069 A CN 102443069A CN 2010105119108 A CN2010105119108 A CN 2010105119108A CN 201010511910 A CN201010511910 A CN 201010511910A CN 102443069 A CN102443069 A CN 102443069A
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Abstract
The invention discloses a corn processing method, comprising the following steps of: (1) soaking dry corn granules in a soaking solution for 12-16 hours and obtaining the pretreated corn granules; (2) removing germs of the pretreated corn granules to obtain the corn granules without germs; (3) introducing the corn granules without germs to a sulphurous acid solution, soaking for 20-28 hours and then performing solid-liquid separation; (4) grinding a solid component obtained by the solid-liquid separation, obtaining slurry and removing fibrous residues in the slurry; and (5) centrifuging the component without fibrous residues and removing a supernatant liquor containing proteins to obtain starch milk. According to the corn processing method, by means of the manner of removing germs and then soaking, the corns are crushed while the germs are removed; the crushed corns are soaked and the penetrating capability of the sulphurous acid solution is improved, so that protein meshes can be dispersed rapidly, the starch adhered to the fibers is reduced and the yielding rate of the starch is improved.
Description
Technical field
The present invention relates to the corn deep processing field, relate to a kind of treatment process of corn particularly.
Background technology
W-Gum is the raw material that is widely used in corn deep processing industries such as feed, Dian Fentang, and China is starch and Dian Fentang big producing country, and wherein the Dian Fentang YO exceedes 6,000,000 tons, and production technique adopts wet method to soak mostly.The length of soaking quality, the soak time of effect directly influences yield and the quality and the production cost of finished product of starch and other sub products in the processing.
Traditional technique for soaking corn adopts sulfurous acid under 45-55 ℃ temperature, dried corn particle to be soaked; After soaking end soaked corn particle is taken off embryo; The corn particle that will take off afterwards behind the embryo grinds, and obtains soup compound, and removes the fibrous residue in this soup compound; To remove the component that obtains behind the fibrous residue afterwards and carry out centrifugally, and remove and contain proteinic supernatant liquid phase, obtain milk of starch.But the shortcoming of this treatment process is can not starch be extracted fully, and the rate of loss of starch is high, thereby causes the yield of starch lower.
Therefore, press for the method for a kind of novel processing corn that can be fully the starch in the corn be extracted of exploitation.
Summary of the invention
The objective of the invention is to overcome the extraction starch that the existing method that is used to handle corn exists insufficient, cause the high defective of starch rate of loss; Providing a kind of can extract the starch in the corn effectively, thereby reduces the corn processing methods of the rate of loss of starch effectively.
Contriver of the present invention has carried out careful research to the treating processes of corn; Discovery is in traditional corn soaking process; Sulfurous acid solution to the penetrating power of corn a little less than, cause in the corn most protein net fully not opened, cause when de-fibering, taking away a large amount of starch.
Based on this discovery, the invention provides a kind of treatment process of corn, wherein, this method comprises:
(1) places soak solution to soak 12-16 hour dried corn particle, obtain through pretreated corn particle;
(2) remove plumule, obtained removing the corn particle of plumule through pretreated corn particle;
The corn particle that has removed plumule that (3) will obtain is incorporated into to soak after 20-28 hour in the sulfurous acid solution and carries out solid-liquid separation;
(4) solid components that above-mentioned solid-liquid separation is obtained grinds, and obtains soup compound, and removes the fibrous residue in this soup compound;
(5) will remove the component that obtains behind the fibrous residue and carry out centrifugally, and remove and contain proteinic supernatant liquid phase, obtain milk of starch.
In the corn processing methods provided by the invention, through the mode of going to soak again behind the embryo, when taking off plumule; Pulverized corn; Corn after pulverizing is soaked again, improved the penetrating power of sulfurous acid solution, thereby disperseed the protein net fast; And reduced the starch that sticks on the fiber, thereby improved the yield of starch.
Embodiment
The invention provides a kind of treatment process of corn, wherein, this method comprises:
(1) places soak solution to soak 12-16 hour dried corn particle, obtain through pretreated corn particle;
(2) remove plumule, obtained removing the corn particle of plumule through pretreated corn particle;
The corn particle that has removed plumule that (3) will obtain is incorporated into to soak after 20-28 hour in the sulfurous acid solution and carries out solid-liquid separation;
(4) solid components that above-mentioned solid-liquid separation is obtained grinds, and obtains soup compound, and removes the fibrous residue in this soup compound;
(5) will remove the component that obtains behind the fibrous residue and carry out centrifugally, and remove and contain proteinic supernatant liquid phase, obtain milk of starch.
According to the present invention, the water cut of said dried corn particle can in very large range change, and under the preferable case, the water cut of said dried corn particle is 14-16 weight %.
According to the present invention; The condition that places soak solution to soak dried corn particle can in very large range change, but under the preferable case, the temperature of immersion can be 40-60 ℃; Ratio between the amount of said soak solution and dried corn particle has no particular limits; As long as dried corn particle is fully soaked, but under the preferable case, the liquid level of said soak solution is higher than at least 10 centimetres of dried corn particles.Said soak solution can be the sulfurous acid solution of 0.15-0.25 weight % concentration; Also can be water; Because corn is in the water-swelling phase about about 0-16 hour; The effect that sulfurous acid solution plays is little, therefore preferably makes water as soak solution, can reduce the consumption of sulfurous acid solution like this.According to the present invention, it is conventionally known to one of skill in the art soaking the equipment that is adopted, and for example, can in steeping tank, soak corn.
According to the present invention; The said method that to take off embryo for various corns through the method for the plumule of pretreated corn particle that removes; For example; This method can comprise: will once grind through pretreated corn particle, the condition of once grinding makes corn particle be broken into average particle diameter can be the particle of 2-5 millimeter, and removes the plumule under grinding; Carry out regrind afterwards, the condition of regrind makes the particulate average particle diameter that obtains can be the 1-1.5 millimeter, and removes the plumule under grinding.
Among the present invention; The corn particle that has removed plumule with what obtain be incorporated into soak in the sulfurous acid solution condition can in very large range change; But under the preferable case, the temperature of said immersion can be 40-60 ℃, more preferably 45-55 ℃; The amount of the said sulfurous acid aqueous solution and the ratio that has removed between the amount of corn particle of plumule have no particular limits; As long as can the corn particle that remove plumule fully be soaked, under the preferable case, the liquid level of the said sulfurous acid aqueous solution can be higher than at least 10 centimetres of corn particles.The concentration of the said sulfurous acid aqueous solution can be 0.15-0.25 weight %, more preferably 0.2-0.25 weight %.According to the present invention, it is conventionally known to one of skill in the art soaking the equipment that is adopted, and for example, can in steeping tank, soak corn.
According to the present invention, said method of removing fibrous residue is conventionally known to one of skill in the art, for example; Can said soup compound be incorporated in the pressure curved sieve and sieve; The compass screen surface radian of bent sieve is 100-120 °, and the sieve seam width of bent sieve is the 50-75 micron, and feed pressure is 0.2-0.4MPa.Said pressure curved sieve can be commercially available, for example the DZQ50 type pressure curved sieve of Yixing starch instrument factory production.
Among the present invention, said centrifugal equipment and condition are conventionally known to one of skill in the art, for example, can in whizzer, carry out centrifugally, and centrifugal rotation speed can be 2000-3000rpm, and the centrifugal time can be 10-20 second.
Through concrete embodiment the present invention is described in more details below.
Embodiment 1
(1) 10 tons of dried corns (water cut is 15 weight %) are placed steeping tank, and introduce water corn is soaked, the temperature of immersion is 50 ℃, and the time of immersion is 16 hours, and the introducing amount of water makes liquid level be higher than 10 centimetres of corn particles;
(2) corn after soaking in the step (1) connects in the degerming mill machine that water is transported to the DTMT-80 type together and takes off embryo, and being milled to average particle diameter through the corn particle of the draining screen in the germ separator is 3 millimeters particle; Afterwards with this particle with the undersized water of dehydration, be transported in the swirler-, to remove the plumule under grinding; Afterwards; To in swirler-, remove the corn particle that grinds plumule down and water is incorporated into together and proceeds grinding in the DTMT-80 type degerming mill machine; Obtain average particle diameter after the grinding and be 1.5 millimeters particle; Afterwards with this particle with the undersized water of dehydration, be delivered in the swirler-, to remove the plumule under grinding;
The corn particle that (3) will remove plumule is incorporated in the sulfurous acid solution that concentration is 0.25 weight %, under 50 ℃ temperature, soaks 24 hours, carries out solid-liquid separation afterwards;
(4) solid components that above-mentioned solid-liquid separation is obtained is incorporated in the impact grinding of LZM685-NA type and grinds, and obtains soup compound, and said soup compound is incorporated into pressure curved sieve (Yixing starch instrument factory; DZQ50) sieve in; So that the fibrous residue in this soup compound is removed, wherein, the compass screen surface radian of pressure curved sieve is 120 °; The sieve seam width of pressure curved sieve is 75 microns, and feed pressure is 0.2MPa;
(5) will remove the component that obtains behind the fibrous residue and be incorporated into Wei Si and cut down and carry out centrifugally in the Leah SDA130 type whizzer, and will have proteinic supernatant liquid to get rid of mutually, wherein, centrifugal rotation speed is 2000rpm, and the centrifugal time is 20 seconds, obtains milk of starch A1.
Comparative Examples 1
According to preparing reference milk of starch CA1 with embodiment 1 identical method; Difference is; 10 tons of dried corns (water cut is 15 weight %) are placed steeping tank, and to introduce concentration be that the sulfurous acid solution of 0.25% weight % soaks corn, the temperature of immersion is 50 ℃; The time of soaking is 40 hours, and the introducing amount of sulfurous acid solution makes liquid level be higher than 10 centimetres of corn particles; Take off embryo afterwards again, remove fiber and proteic step, obtain reference milk of starch CA1.
Embodiment 2
(1) 10 tons of dried corns (water cut is 15 weight %) are placed steeping tank, and introduce water corn is soaked, the temperature of immersion is 45 ℃, and the time of immersion is 12 hours, and the introducing amount of water makes liquid level be higher than 10 centimetres of corn particles;
(2) corn after soaking in the step (1) connects in the degerming mill machine that water is transported to the DTMT-80 type together and takes off embryo, and being milled to average particle diameter through the corn particle of the draining screen in the germ separator is 2 millimeters particle; Afterwards with this particle with the undersized water of dehydration, be transported in the swirler-, to remove the plumule under grinding; Afterwards; To in swirler-, remove the corn particle that grinds plumule down and water is incorporated into together and proceeds grinding in the DTMT-80 type degerming mill machine; Obtain average particle diameter after the grinding and be 1 millimeter particle; Afterwards with this particle with the undersized water of dehydration, be delivered in the swirler-, to remove the plumule under grinding;
The corn particle that (3) will remove plumule is incorporated in the sulfurous acid solution that concentration is 0.2 weight %, under 55 ℃ temperature, soaks 26 hours, carries out solid-liquid separation afterwards;
(4) solid components that above-mentioned solid-liquid separation is obtained is incorporated in the impact grinding of LZM685-NA type and grinds, and obtains soup compound, and said soup compound is incorporated into pressure curved sieve (Yixing starch instrument factory; DZQ50) sieve in; So that the fibrous residue in this soup compound is removed, wherein, the compass screen surface radian of pressure curved sieve is 120 °; The sieve seam width of pressure curved sieve is 75 microns, and feed pressure is 0.2MPa;
(5) will remove the component that obtains behind the fibrous residue and be incorporated into Wei Si and cut down and carry out centrifugally in the Leah SDA130 type whizzer, and will have proteinic supernatant liquid to get rid of mutually, wherein, centrifugal rotation speed is 2500rpm, and the centrifugal time is 15 seconds, obtains milk of starch A2.
Embodiment 3
(1) 10 tons of dried corns (water cut is 15 weight %) are placed steeping tank, and introduce water corn is soaked, the temperature of immersion is 55 ℃, and the time of immersion is 14 hours, and the introducing amount of water makes liquid level be higher than 10 centimetres of corn particles;
(2) corn after soaking in the step (1) connects water and is transported to together in the DTMT-80 type degerming mill machine and takes off embryo, and being milled to average particle diameter through the corn particle of the draining screen in the germ separator is 2.5 millimeters particle; Afterwards with this particle with the undersized water of dehydration, be transported in the swirler-, to remove the plumule under grinding; Afterwards; To in swirler-, remove the corn particle that grinds plumule down and water is incorporated into together and proceeds grinding in the DTMT-80 type degerming mill machine; Obtain average particle diameter after the grinding and be 1 millimeter particle; Afterwards with this particle with the undersized water of dehydration, be delivered in the swirler-, to remove the plumule under grinding;
The corn particle that (3) will remove plumule is incorporated in the sulfurous acid solution that concentration is 0.15 weight %, under 50 ℃ temperature, soaks 22 hours, carries out solid-liquid separation afterwards;
(4) solid components that above-mentioned solid-liquid separation is obtained is incorporated in the impact grinding of LZM685-NA type and grinds, and obtains soup compound, and said soup compound is incorporated into pressure curved sieve (Yixing starch instrument factory; DZQ50) sieve in; So that the fibrous residue in this soup compound is removed, wherein, the compass screen surface radian of pressure curved sieve is 120 °; The sieve seam width of pressure curved sieve is 75 microns, and feed pressure is 0.2MPa;
(5) will remove the component that obtains behind the fibrous residue and be incorporated into Wei Si and cut down and carry out centrifugally in the Leah SDA130 type whizzer, and will have proteinic supernatant liquid to get rid of mutually, wherein, centrifugal rotation speed is 3000rpm, and the centrifugal time is 10 seconds, obtains milk of starch A3.
Embodiment 4-6
Record total reducing sugar, starch content=0.9 * total reducing sugar through GBT 15038-2006 total reducing sugar direct titrimetric method respectively.Detect and soak contents of starch among the milk of starch A1-A3 that obtains after the end among the embodiment 1-3 in the step (4), said contents of starch is meant that starch consolidating in corn contains the weight percent in the thing, and the result is as shown in table 1.
Comparative Examples 2
According to the method identical with embodiment 4-6, detect contents of starch among the reference milk of starch CA1 that obtains in the Comparative Examples 1, the result is as shown in table 1.
Table 1
| The embodiment numbering | The milk of starch numbering | Starch content | Total soak time |
| Embodiment 4 | A1 | 72.1 weight % | 40 hours |
| Comparative Examples 2 | CA1 | 64.2 weight % | 40 hours |
| Embodiment 5 | A2 | 72.8 weight % | 38 hours |
| Embodiment 6 | A3 | 72.2 weight % | 36 hours |
In the data of last table, compare with the starch content of the reference milk of starch CA1 that detects in the Comparative Examples 2, the starch content of the milk of starch A1-A3 that embodiment of the invention 4-6 detects significantly improves; This shows, through the mode of going to soak again behind the embryo, when taking off plumule; Pulverize corn, the corn after pulverizing has been soaked again, improved the penetrating power of sulfurous acid solution; Thereby disperse the protein net fast, and reduced the starch that sticks on the fiber, thereby improved the yield of starch.
Claims (9)
1. the treatment process of a corn, wherein, this method comprises:
(1) places soak solution to soak 12-16 hour dried corn particle, obtain through pretreated corn particle;
(2) remove plumule, obtained removing the corn particle of plumule through pretreated corn particle;
The corn particle that has removed plumule that (3) will obtain is incorporated into to soak after 20-28 hour in the sulfurous acid solution and carries out solid-liquid separation;
(4) solid components that above-mentioned solid-liquid separation is obtained grinds, and obtains soup compound, and removes the fibrous residue in this soup compound;
(5) will remove the component that obtains behind the fibrous residue and carry out centrifugally, and remove and contain proteinic supernatant liquid phase, obtain milk of starch.
2. treatment process according to claim 1, wherein, the soaking temperature that places soak solution to soak dried corn particle is 40-60 ℃, the liquid level of said soak solution is higher than at least 10 centimetres of dried corn particles.
3. treatment process according to claim 1 and 2, wherein, said soak solution is a water.
4. treatment process according to claim 1; Wherein, The method that removes through the plumule of pretreated corn particle comprises: will once grind through pretreated corn particle; The condition of once grinding makes corn particle be broken into the particle that average particle diameter is the 2-5 millimeter, and removes the plumule under grinding; Carry out regrind afterwards, it is the 1-1.5 millimeter that the condition of regrind makes the particulate average particle diameter that obtains, and removes the plumule under grinding.
5. treatment process according to claim 1, wherein, it is 40-60 ℃ that the corn particle that has removed plumule with what obtain is incorporated into the soaking temperature that soaks in the sulfurous acid solution, and the liquid level of the said sulfurous acid aqueous solution is higher than at least 10 centimetres of corn particles.
6. according to claim 1 or 5 described treatment processs, wherein, the concentration of the said sulfurous acid aqueous solution is 0.15-0.25 weight %.
7. treatment process according to claim 1; Wherein, the method for removing fibrous residue comprises: said soup compound is incorporated in the pressure curved sieve sieves, the compass screen surface radian of bent sieve is 100-120 °; The sieve seam width of bent sieve is the 50-75 micron, and feed pressure is 0.2-0.4MPa.
8. treatment process according to claim 1, wherein, said centrifugal condition comprises: centrifugal rotation speed is 2000-3000rpm, the centrifugal time is 10-20 second.
9. treatment process according to claim 1, wherein, the water cut of said dried corn particle is 14-26 weight %.
Priority Applications (1)
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| CN 201010511910 CN102443069B (en) | 2010-10-13 | 2010-10-13 | Corn processing method |
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| CN 201010511910 CN102443069B (en) | 2010-10-13 | 2010-10-13 | Corn processing method |
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| CN102443069B CN102443069B (en) | 2013-06-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850460A (en) * | 2012-09-05 | 2013-01-02 | 施韧 | Sectional corn dipping method |
| CN102909109A (en) * | 2012-09-21 | 2013-02-06 | 安徽中粮生化燃料酒精有限公司 | Methods for degerming and pretreating corns and method for brewing alcohol by adopting corns |
| CN106519045A (en) * | 2016-11-11 | 2017-03-22 | 山东省科学院生物研究所 | Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch |
| CN107877941A (en) * | 2017-11-15 | 2018-04-06 | 广东松炀再生资源股份有限公司 | A kind of high moisture high-strength corrugated paper and preparation method thereof |
| CN108559003A (en) * | 2018-05-15 | 2018-09-21 | 黑龙江省农业科学院食品加工研究所 | A kind of energy saving, emission reduction, efficient cornstarch processing method |
| CN114555647A (en) * | 2019-10-18 | 2022-05-27 | 罗盖特公司 | Soluble corn steep |
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| JP2546686B2 (en) * | 1987-09-09 | 1996-10-23 | 三和興産株式会社 | Purification method of starch emulsion |
| CN1149058A (en) * | 1995-10-25 | 1997-05-07 | 杜翎 | Process for producing corn starch by alkali immersion to remove seed-skin and wet milling |
| US20050009133A1 (en) * | 2003-06-12 | 2005-01-13 | Johnston David B. | Processes for recovery of corn germ and optionally corn coarse fiber (pericarp) |
| CN101824092A (en) * | 2009-06-30 | 2010-09-08 | 山东福田糖醇有限公司 | Soaking technology for preparing corn starch |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2546686B2 (en) * | 1987-09-09 | 1996-10-23 | 三和興産株式会社 | Purification method of starch emulsion |
| CN1149058A (en) * | 1995-10-25 | 1997-05-07 | 杜翎 | Process for producing corn starch by alkali immersion to remove seed-skin and wet milling |
| US20050009133A1 (en) * | 2003-06-12 | 2005-01-13 | Johnston David B. | Processes for recovery of corn germ and optionally corn coarse fiber (pericarp) |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850460A (en) * | 2012-09-05 | 2013-01-02 | 施韧 | Sectional corn dipping method |
| CN102850460B (en) * | 2012-09-05 | 2014-12-17 | 施韧 | Sectional corn dipping method |
| CN102909109A (en) * | 2012-09-21 | 2013-02-06 | 安徽中粮生化燃料酒精有限公司 | Methods for degerming and pretreating corns and method for brewing alcohol by adopting corns |
| CN102909109B (en) * | 2012-09-21 | 2015-03-04 | 安徽中粮生化燃料酒精有限公司 | Methods for degerming and pretreating corns and method for brewing alcohol by adopting corns |
| CN106519045A (en) * | 2016-11-11 | 2017-03-22 | 山东省科学院生物研究所 | Lactic-acid-and-hydrogen-peroxide-coordination-soaking extracting method for corn starch |
| CN106519045B (en) * | 2016-11-11 | 2018-09-04 | 山东省科学院生物研究所 | A kind of method that lactic acid cooperates with soak extraction cornstarch with hydrogen peroxide |
| CN107877941A (en) * | 2017-11-15 | 2018-04-06 | 广东松炀再生资源股份有限公司 | A kind of high moisture high-strength corrugated paper and preparation method thereof |
| CN108559003A (en) * | 2018-05-15 | 2018-09-21 | 黑龙江省农业科学院食品加工研究所 | A kind of energy saving, emission reduction, efficient cornstarch processing method |
| CN114555647A (en) * | 2019-10-18 | 2022-05-27 | 罗盖特公司 | Soluble corn steep |
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| CN102443069B (en) | 2013-06-19 |
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