CN107619842A - A kind of method of Production by Enzymes cornstarch - Google Patents
A kind of method of Production by Enzymes cornstarch Download PDFInfo
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- CN107619842A CN107619842A CN201710937239.5A CN201710937239A CN107619842A CN 107619842 A CN107619842 A CN 107619842A CN 201710937239 A CN201710937239 A CN 201710937239A CN 107619842 A CN107619842 A CN 107619842A
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Abstract
The invention discloses a kind of method of Production by Enzymes cornstarch, comprise the following steps：(1) raw material handling process；(2) process is tentatively soaked；(3) secondary immersion process；(4) process is soaked three times；(5) steam；(6) broken and separated plumule；(7) refine, separate fiber；(8) centrifuge；(9) wash and be dehydrated；(10) dry；(11) crush.The method of the present invention improves the functioning efficiency of enzyme preparation, reduces the addition cost of enzyme preparation；The yield of cornstarch can be improved, the yield of albumen powder can also be improved；Slurry amount is reduced, improves detersive efficiency；Centrifugal efficiency is improved, and then reduces power consumption, improves economic benefit, there is great application value.
Description
Technical field
The present invention relates to corn deep processing field, specifically a kind of method of Production by Enzymes cornstarch.
Background technology
Cornstarch is using iblet as raw material, passes through sulfurous acid soak, crushing and screening, separating, washing, dewatered drying system
Into product.For cornstarch in addition to food, papermaking, weaving, medicine and other fields are directly used in, the overwhelming majority is used for deep processing.Form sediment
Powder industry is a larger industry of China's corn usage amount, and the yield of China's cornstarch is from 1999 to 2011 in year by year
Growth trend.National cornstarch amount occupies second place of the world up to 21,700,000 tons within 2009.
Starch sugar is the high-grade products using cornstarch as raw material, there is higher economic value and edibility, extensive
Apply in the industries such as food, medicine, chemical industry, fermentation.The starch sugar that cornstarch is produced includes glucose, fructose, maltose
Deng.Corn syrup made of cornstarch deep processing is easily absorbed by the body utilization, is to make candy, cake, beverage and can
Excellent sweetener.Sorbierite is the derivative of starch sugar, in great demand mainly for the production of vitamin C, recent year.
The converted starch being modified on the basis of starch is the product that new development in recent years is got up, widely used, and foreign countries have developed
Individual kind more than 3000, and China only develops individual kind more than 50.It is widely used in papermaking, weaving, food, feed, medicine, mouth
The industry such as change, oil, usage amount maximum is the industries such as papermaking, food and textile, is had good prospects.Therefore, recent year
The demand of cornstarch is increased outside.
In addition, during production of corn starch, in addition to cornstarch major product, also can obtain corn oil, zein fiber,
Three kinds of byproducts of albumen powder and corn steep liquor.The unsaturated fatty acid content of corn oil mainly has oleic acid and Asia oil up to more than 85%
Acid, human absorptivity is up to more than 97%；Contain sitosterol in corn oil, have and suppress the increased effect of cholesterol；Given birth to rich in dimension
Plain E, had certain effect for human body cell division, anti-aging.Corn dietary fiber is made up of cellulose and hemicellulose,
There is hypotensive, prevention cardiovascular and cerebrovascular disease.Albumen powder is the significant by-products of corn wet processing, and its protein contains
Amount be up to 50%-70%, mainly as production high protein feed raw material, it is also possible to come produce alcohol soluble protein etc. other industry production
Product.Total protein content is 44%-48% (butt) in corn steep liquor, and as feed formula, corn steep liquor is a kind of high protein, height
The nutrients of energy, simultaneously containing abundant vitamin B and mineral matter.
Protease is typically added in soak using the technique of Production by Enzymes cornstarch at present, but protease can incite somebody to action
Partial proteolysis in cornstarch, this eventually results in the protein of production of corn starch process most economic value
Loss, and the soluble protein being dissolved in water also can disposal of pollutants process water, be unfavorable for environmental protection.And prior art
The separating effect and purity of isolate during production of corn starch are limited, and deep processing cost for purification is high, and isolate point
Energy consumption (water, electricity, steam) height, efficiency from process is low.Therefore, the present invention provides a kind of method of Production by Enzymes cornstarch.
The content of the invention
It is an object of the invention to provide a kind of method of Production by Enzymes cornstarch, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides following technical scheme：
A kind of method of Production by Enzymes cornstarch, (1) raw material handling process：The impurity contained in cleaning corn；
(2) process is tentatively soaked：By 200-300 parts corn soaking in the first soak, 58-65 DEG C of soaking temperature, leaching
Time 65-80h is steeped, soak is discharged when moisture is more than 58% in corn, obtains the corn by first immersion treatment and second
Soak, second soak turn into corn steep liquor after being concentrated by evaporation；
(3) secondary immersion process：Corn using process water 400-500 parts in technique water pot to above-mentioned discharge soak
Middle progress immersion treatment again, contain enzyme preparation 8-15 parts in the process water in technique water pot, it is 7-12 to adjust process water pH value,
The immersion treatment time is 1-3 hours again at 30-35 DEG C, and screening process is carried out after immersion treatment；Obtain by immersion treatment again
Corn and the 3rd soak；The enzyme preparation is using beta amylase, alpha amylase, amyloglucosidase and amylopectase configuration
Form；
(4) process is soaked three times：Corn using process water 350-420 parts in technique water pot to above-mentioned discharge soak
Middle progress immersion treatment again, contain enzyme preparation 5-10 parts in the process water in technique water pot, it is 7-12 to adjust process water pH value,
The immersion treatment time is 2-5 hours again at 25-32 DEG C, and screening process is carried out after immersion treatment；Obtain by immersion treatment again
Corn and the 4th soak；The enzyme preparation is formed using cellulase, phytase, zytase, pectase configuration；
(5) steam：The corn of immersion treatment is put into steamer, 1-3h is steamed at 105-125 DEG C, is subsequently cooled to room
Temperature；
(6) broken and separated plumule：Corn after steaming obtains the first mixture after carrying out broken apart plumule processing
And separated plumule；
(7) refine, separate fiber：First mixture obtained by upper step is subjected to fine grinding processing, obtains the second mixture；Then
Separating treatment is carried out to the second mixture, obtains the 3rd mixture and filament；
(8) centrifuge：Processing is centrifuged to the 3rd mixture that upper step obtains, obtains Corn Starch Blends
And protein mixture；
(9) wash and be dehydrated：The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn
Starch；Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to which it is 25-38% to take off to the water content of wet starch；
(10) dry：Processing is dried to the wet corn starch that upper step obtains, obtains dry cornstarch；Starch is done
Drying process condition controls：115-135 DEG C of drying temperature, wind speed 25-30m/S, drying time 25-40min；Dried dry shallow lake
Powder moisture content 5-15%；
(11) crush：By dried starch first screened processing, the starch of regulation fineness is sifted out, oversize is sent into pulverizer and carried out
Crush, then sieved again, product is entirely reached defined fineness.
As the further scheme of the present invention：Using the impurity contained in screening, wind selection method cleaning corn.
As the further scheme of the present invention：Step (2) tentatively soaks process：By 270 parts of corn soakings in the first immersion
In liquid, 62 DEG C, soak time 71h of soaking temperature, soak is discharged when moisture is more than 58% in corn, obtained by just immersion
The corn of processing and the second soak, second soak turn into corn steep liquor after being concentrated by evaporation.
As the further scheme of the present invention：The secondary immersion process of step (3)：Using the process water 460 in technique water pot
Part to carrying out immersion treatment again in the corn of above-mentioned discharge soak, contain 11 parts of enzyme preparation in the process water in technique water pot,
It is 8-10 to adjust process water pH value, and the immersion treatment time is 2 hours again at 33 DEG C, and screening process is carried out after immersion treatment；
Obtain the corn and the 3rd soak by immersion treatment again；The enzyme preparation is using beta amylase, alpha amylase, amyloglucosidase
Enzyme and amylopectase form according to the configuration of weight ratio 2: 1.3: 1.7: 1.
As the further scheme of the present invention：Step (4) soaks process three times：Using the process water 395 in technique water pot
Part to carrying out immersion treatment again in the corn of above-mentioned discharge soak, contain 8 parts of enzyme preparation in the process water in technique water pot, tune
It is 9-11 to save process water pH value, and the immersion treatment time is 3 hours again at 28 DEG C, and screening process is carried out after immersion treatment；
To by the corn of immersion treatment and the 4th soak again；The enzyme preparation is using cellulase, phytase, zytase, fruit
Glue enzyme forms according to weight than 1: 1.2: 2: 1 configuration.
As the further scheme of the present invention：Step (5) steams：The corn of immersion treatment is put into steamer, at 118 DEG C
Under steam 1.9h, be subsequently cooled to room temperature.
As the further scheme of the present invention：Step (9) is washed and dehydration：The Corn Starch Blends obtained to upper step enter
Row washing and dewater treatment obtain wet corn starch；Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to de-
Water content to wet starch is 29-35%.
As the further scheme of the present invention：Step (10) is dried：Place is dried to the wet corn starch that upper step obtains
Reason, obtains dry cornstarch；Starch drying process condition controls：127 DEG C, wind speed 28m/S of drying temperature, drying time
32min；Dried dried starch moisture content 8-12%.
Compared with prior art, the beneficial effects of the invention are as follows：
The method of the present invention can utilize existing wet method starch processing device, improve the functioning efficiency of enzyme preparation, reduce
The addition cost of enzyme preparation；Slurry amount is reduced, improves detersive efficiency；Centrifugal efficiency is improved, and then reduces electricity
Consumption, improves economic benefit, has great application value.The receipts of cornstarch can be not only improved using the method for the present invention
Rate, the yield of albumen powder can also be improved.Because the present invention can avoid proteolytic, reduce without addition protease
The loss of the protein of production of corn starch process most economic value, reduce the pollution of soluble protein in discharge water.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment 1
A kind of method of Production by Enzymes cornstarch, comprises the following steps：
(1) raw material handling process：The impurity that contains is cleared up in corn using the methods of screening, selection by winnowing, and cleaning equipment can adopt
With vibratory sieve, specific-gravity stoner, permanent magnetic pulley and wheat washer etc.；
Due to using in general commodity corn, therefore need to carry out raw material handling to corn before being processed, due to
Containing various dust and weed-trifles, organic and inorganic impurity in commodity corn, in order to ensure safety in production and product quality, it is necessary to in corn
Existing impurity is cleared up.
(2) process is tentatively soaked：By 200 parts of corn soakings in the first soak, 58 DEG C of soaking temperature, soak time
65h, soak is discharged when moisture is more than 58% in corn, obtains the corn and the second soak by first immersion treatment, institute
Stating after the second soak is concentrated by evaporation turns into corn steep liquor；
(3) secondary immersion process：Using entering in 400 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 8 parts of enzyme preparation in the process water in technique water pot, it is 7-12 to adjust process water pH value, at 30 DEG C
The immersion treatment time is 1 hour again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 3rd
Soak；The enzyme preparation is using beta amylase, alpha amylase, amyloglucosidase and amylopectase according to weight ratio 2: 1.3:
1.7: 1 configurations form；
(4) process is soaked three times：Using entering in 350 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 5 parts of enzyme preparation in the process water in technique water pot, it is 7-12 to adjust process water pH value, at 25 DEG C
The immersion treatment time is 2 hours again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 4th
Soak；The enzyme preparation using cellulase, phytase, zytase, pectase according to weight than 1: 1.2: 2: 1 configure and
Into；
The preliminary structure and physicochemical properties for changing corn embryosperm of just immersion is used first, reduces the machinery of corn kernel
Intensity, while part solable matter is extracted out, then soaked twice using the process water for adding enzyme preparation again, due to
Structure by the corn just soaked has changed, therefore just immersion provides more favourable ring for the enzyme preparation in soaking again
Border, enzyme preparation is facilitated to play a role.The immersion of corn directly influences the normal production of later process starch, influences Starch Production
Extracting rate, quality and yield.Therefore, corn soaking is one of very important process in production of corn starch process.Corn soaks
The purpose of bubble is to change the structure and physicochemical properties of endosperm, weakens the connecting key in protein, reduces the machine of corn kernel
Tool intensity, part solable matter is extracted out, and suppress the harmful activity of microorganism come in corn belt.
(5) steam：The corn of immersion treatment is put into steamer, 1h is steamed at 105 DEG C, is subsequently cooled to room temperature；
(6) broken and separated plumule：Corn after steaming obtains the first mixture after carrying out broken apart plumule processing
And separated plumule；Corn is broken typically to use method broken twice, i.e.,：Corn-primary fragmentation-germ separation-second-time breakage-
Germ separation.Iblet passes through primary fragmentation, and most of plumule and endosperm separate, and pulls plumule out by floating tank, enters back into two
Secondary broken, process crushes twice, and plumule is totally separated out.The plumule separated, on the vibrating by continuously adding
The technique Water spray of enzyme preparation, starch milk, drum matter of plumule surface adhesion etc. are washed away, by centrifuge preliminary hydro-extraction to plumule
Middle water content is less than 36%；
(7) refine, separate fiber：First mixture obtained by upper step is subjected to fine grinding processing, obtains the second mixture；Then
Separating treatment is carried out to the second mixture, obtains the 3rd mixture and filament；
The purpose of fine grinding is to destroy the combination of starch and non-starch composition in corn fragment, starch is dissociated to greatest extent
Out, fibrous residue is separated, and separates protein and starch granules in endosperm, further to separate and to refine.Fiber separation
The fibrous residue after starch mainly being discharged by repeatedly with the addition of the technique water washing of enzyme preparation, it is contained less trip
From starch and with reference to starch；Enzyme preparation can reduce the hydrophily of cellulose and hemicellulose to greatest extent, therefore, it is possible to reduce
Fibrous matter water content, so improving concentration and drying efficiency, concentration and drying quantity of steam are reduced, and then greatly save
About energy consumption；
(8) centrifuge：Processing is centrifuged to the 3rd mixture that upper step obtains, obtains Corn Starch Blends
And protein mixture；The separation of starch and protein is carried out in butterfly centrifugal machine, due to the particle diameter and proportion of starch granules
Bigger than albumen plasmid, its sinking speed in suspension is faster than protein particulate, can efficiently make starch with centrifugal separator
With Separation of Proteins；
(9) wash and be dehydrated：The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn
Starch；Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to which it is 25-38% to take off to the water content of wet starch；
(10) dry：Processing is dried to the wet corn starch that upper step obtains, obtains dry cornstarch；Starch is done
Drying process condition controls：115 DEG C, wind speed 25m/S, drying time 25min of drying temperature；Dried dried starch moisture content 5-
15%；
(11) crush：By dried starch first screened processing, the starch of regulation fineness is sifted out, oversize is sent into pulverizer and carried out
Crush, then sieved again, product is entirely reached defined fineness.
Embodiment 2
A kind of method of Production by Enzymes cornstarch, comprises the following steps：
(1) raw material handling process：The impurity that contains is cleared up in corn using the methods of screening, selection by winnowing, and cleaning equipment can adopt
With vibratory sieve, specific-gravity stoner, permanent magnetic pulley and wheat washer etc.；
(2) process is tentatively soaked：By 300 parts of corn soakings in the first soak, 65 DEG C of soaking temperature, soak time
80h, soak is discharged when moisture is more than 58% in corn, obtains the corn and the second soak by first immersion treatment, institute
Stating after the second soak is concentrated by evaporation turns into corn steep liquor；
(3) secondary immersion process：Using entering in 500 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 15 parts of enzyme preparation in the process water in technique water pot, it is 7-12 to adjust process water pH value, at 35 DEG C
The immersion treatment time is 3 hours again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 3rd
Soak；The enzyme preparation is using beta amylase, alpha amylase, amyloglucosidase and amylopectase according to weight ratio 2: 1.3:
1.7: 1 configurations form；
(4) process is soaked three times：Using entering in 420 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 10 parts of enzyme preparation in the process water in technique water pot, it is 7-12 to adjust process water pH value, at 32 DEG C
The immersion treatment time is 5 hours again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 4th
Soak；The enzyme preparation using cellulase, phytase, zytase, pectase according to weight than 1: 1.2: 2: 1 configure and
Into；
(5) steam：The corn of immersion treatment is put into steamer, 3h is steamed at 125 DEG C, is subsequently cooled to room temperature；
(6) broken and separated plumule：Corn after steaming obtains the first mixture after carrying out broken apart plumule processing
And separated plumule；Corn is broken typically to use method broken twice, i.e.,：Corn-primary fragmentation-germ separation-second-time breakage-
Germ separation.Iblet passes through primary fragmentation, and most of plumule and endosperm separate, and pulls plumule out by floating tank, enters back into two
Secondary broken, process crushes twice, and plumule is totally separated out.The plumule separated, on the vibrating by continuously adding
The technique Water spray of enzyme preparation, starch milk, drum matter of plumule surface adhesion etc. are washed away, by centrifuge preliminary hydro-extraction to plumule
Middle water content is less than 36%；
(7) refine, separate fiber：First mixture obtained by upper step is subjected to fine grinding processing, obtains the second mixture；Then
Separating treatment is carried out to the second mixture, obtains the 3rd mixture and filament；
(8) centrifuge：Processing is centrifuged to the 3rd mixture that upper step obtains, obtains Corn Starch Blends
And protein mixture；The separation of starch and protein is carried out in butterfly centrifugal machine, due to the particle diameter and proportion of starch granules
Bigger than albumen plasmid, its sinking speed in suspension is faster than protein particulate, can efficiently make starch with centrifugal separator
With Separation of Proteins；
(9) wash and be dehydrated：The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn
Starch；Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to which it is 25-38% to take off to the water content of wet starch；
(10) dry：Processing is dried to the wet corn starch that upper step obtains, obtains dry cornstarch；Starch is done
Drying process condition controls：135 DEG C, wind speed 30m/S, drying time 40min of drying temperature；Dried dried starch moisture content 5-
15%；
(11) crush：By dried starch first screened processing, the starch of regulation fineness is sifted out, oversize is sent into pulverizer and carried out
Crush, then sieved again, product is entirely reached defined fineness.
Embodiment 3
A kind of method of Production by Enzymes cornstarch, comprises the following steps：
(1) raw material handling process：The impurity that contains is cleared up in corn using the methods of screening, selection by winnowing, and cleaning equipment can adopt
With vibratory sieve, specific-gravity stoner, permanent magnetic pulley and wheat washer etc.；
(2) process is tentatively soaked：By 270 parts of corn soakings in the first soak, 62 DEG C of soaking temperature, soak time
71h, soak is discharged when moisture is more than 58% in corn, obtains the corn and the second soak by first immersion treatment, institute
Stating after the second soak is concentrated by evaporation turns into corn steep liquor.
(3) secondary immersion process：Using entering in 460 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 11 parts of enzyme preparation in the process water in technique water pot, it is 8-10 to adjust process water pH value, at 33 DEG C
The immersion treatment time is 2 hours again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 3rd
Soak；The enzyme preparation is using beta amylase, alpha amylase, amyloglucosidase and amylopectase according to weight ratio 2: 1.3:
1.7: 1 configurations form.
(4) process is soaked three times：Using entering in 395 parts of corns to above-mentioned discharge soak of process water in technique water pot
Row immersion treatment again, contain 8 parts of enzyme preparation in the process water in technique water pot, it is 9-11 to adjust process water pH value, at 28 DEG C
The immersion treatment time is 3 hours again, and screening process is carried out after immersion treatment；Obtain the corn by immersion treatment again and the 4th
Soak；The enzyme preparation using cellulase, phytase, zytase, pectase according to weight than 1: 1.2: 2: 1 configure and
Into.
(5) steam：The corn of immersion treatment is put into steamer, 1.9h is steamed at 118 DEG C, is subsequently cooled to room temperature.
(6) broken and separated plumule：Corn after steaming obtains the first mixture after carrying out broken apart plumule processing
And separated plumule；Corn is broken typically to use method broken twice, i.e.,：Corn-primary fragmentation-germ separation-second-time breakage-
Germ separation.Iblet passes through primary fragmentation, and most of plumule and endosperm separate, and pulls plumule out by floating tank, enters back into two
Secondary broken, process crushes twice, and plumule is totally separated out.The plumule separated, on the vibrating by continuously adding
The technique Water spray of enzyme preparation, starch milk, drum matter of plumule surface adhesion etc. are washed away, by centrifuge preliminary hydro-extraction to plumule
Middle water content is less than 36%；
(7) refine, separate fiber：First mixture obtained by upper step is subjected to fine grinding processing, obtains the second mixture；Then
Separating treatment is carried out to the second mixture, obtains the 3rd mixture and filament；
(8) centrifuge：Processing is centrifuged to the 3rd mixture that upper step obtains, obtains Corn Starch Blends
And protein mixture；The separation of starch and protein is carried out in butterfly centrifugal machine, due to the particle diameter and proportion of starch granules
Bigger than albumen plasmid, its sinking speed in suspension is faster than protein particulate, can efficiently make starch with centrifugal separator
With Separation of Proteins；
(9) wash and be dehydrated：The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn
Starch；Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to which it is 29-35% to take off to the water content of wet starch.
(10) dry：Processing is dried to the wet corn starch that upper step obtains, obtains dry cornstarch；Starch is done
Drying process condition controls：127 DEG C, wind speed 28m/S, drying time 32min of drying temperature；Dried dried starch moisture content 8-
12%.
(11) crush：By dried starch first screened processing, the starch of regulation fineness is sifted out, oversize is sent into pulverizer and carried out
Crush, then sieved again, product is entirely reached defined fineness.
The method of the present invention can utilize existing wet method starch processing device, improve the functioning efficiency of enzyme preparation, reduce
The addition cost of enzyme preparation；Slurry amount is reduced, improves detersive efficiency；Centrifugal efficiency is improved, and then reduces electricity
Consumption, improves economic benefit, has great application value.The receipts of cornstarch can be not only improved using the method for the present invention
Rate, the yield of albumen powder can also be improved.Because the present invention can avoid proteolytic, reduce without addition protease
The loss of the protein of production of corn starch process most economic value, reduce the pollution of soluble protein in discharge water.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (8)
- A kind of 1. method of Production by Enzymes cornstarch, it is characterised in that comprise the following steps：(1) raw material handling process：The impurity contained in cleaning corn；(2) process is tentatively soaked：By 200-300 parts corn soaking in the first soak, 58-65 DEG C of soaking temperature, during immersion Between 65-80h, discharge soak when moisture is more than 58% in corn, obtain corn by first immersion treatment and the second immersion Liquid, second soak turn into corn steep liquor after being concentrated by evaporation；(3) secondary immersion process：Using process water 400-500 parts in technique water pot to entering in the corn of above-mentioned discharge soak Row immersion treatment again, contain enzyme preparation 8-15 parts in the process water in technique water pot, it is 7-12 to adjust process water pH value, in 30- The immersion treatment time is 1-3 hours again at 35 DEG C, and screening process is carried out after immersion treatment；Obtain the jade by immersion treatment again Rice and the 3rd soak；The enzyme preparation using beta amylase, alpha amylase, amyloglucosidase and amylopectase configuration and Into；(4) process is soaked three times：Using process water 350-420 parts in technique water pot to entering in the corn of above-mentioned discharge soak Row immersion treatment again, contain enzyme preparation 5-10 parts in the process water in technique water pot, it is 7-12 to adjust process water pH value, in 25- The immersion treatment time is 2-5 hours again at 32 DEG C, and screening process is carried out after immersion treatment；Obtain the jade by immersion treatment again Rice and the 4th soak；The enzyme preparation is formed using cellulase, phytase, zytase, pectase configuration；(5) steam：The corn of immersion treatment is put into steamer, 1-3h is steamed at 105-125 DEG C, is subsequently cooled to room temperature；(6) broken and separated plumule：Corn after steaming obtains the first mixture after carrying out broken apart plumule processing and divided From plumule；(7) refine, separate fiber：First mixture obtained by upper step is subjected to fine grinding processing, obtains the second mixture；Then to Two mixtures carry out separating treatment, obtain the 3rd mixture and filament；(8) centrifuge：Processing is centrifuged to the 3rd mixture that upper step obtains, obtains Corn Starch Blends and egg White matter mixture；(9) wash and be dehydrated：The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn starch； Starch carries out mechanical dehydration with horizontal type scraper centrifuger after washing, it is desirable to which it is 25-38% to take off to the water content of wet starch；(10) dry：Processing is dried to the wet corn starch that upper step obtains, obtains dry cornstarch；Starch back tender Skill condition controls：115-135 DEG C of drying temperature, wind speed 25-30m/S, drying time 25-40min；Dried dried starch contains Moisture 5-15%；(11) crush：By dried starch first screened processing, the starch of regulation fineness is sifted out, oversize is sent into pulverizer and carries out powder It is broken, then sieved again, product is entirely reached defined fineness.
- 2. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that using screening, wind selection method The impurity contained in cleaning corn.
- 3. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that step (2) tentatively soaks work Sequence：By 270 parts of corn soakings in the first soak, 62 DEG C, soak time 71h of soaking temperature, when moisture is more than in corn Soak is discharged when 58%, obtains the corn and the second soak by first immersion treatment, second soak is concentrated by evaporation Turn into corn steep liquor afterwards.
- 4. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that the secondary immersion work of step (3) Sequence：Using carrying out immersion treatment again, technique water pot in 460 parts of corns to above-mentioned discharge soak of process water in technique water pot In process water in contain 11 parts of enzyme preparation, regulation process water pH value be 8-10, and the immersion treatment time is small for 2 again at 33 DEG C When, screening process is carried out after immersion treatment；Obtain the corn and the 3rd soak by immersion treatment again；The enzyme preparation is adopted Formed with beta amylase, alpha amylase, amyloglucosidase and amylopectase according to the configuration of weight ratio 2: 1.3: 1.7: 1.
- 5. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that step (4) soaks work three times Sequence：Using carrying out immersion treatment again, technique water pot in 395 parts of corns to above-mentioned discharge soak of process water in technique water pot In process water in contain 8 parts of enzyme preparation, regulation process water pH value be 9-11, and the immersion treatment time is 3 hours again at 28 DEG C, Screening process is carried out after immersion treatment；Obtain the corn and the 4th soak by immersion treatment again；The enzyme preparation uses Cellulase, phytase, zytase, pectase form according to weight than 1: 1.2: 2: 1 configuration.
- 6. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that step (5) steams：Will immersion The corn of processing is put into steamer, is steamed 1.9h at 118 DEG C, is subsequently cooled to room temperature.
- 7. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that step (9) is washed and dehydration： The Corn Starch Blends obtained to upper step are washed and dewater treatment obtains wet corn starch；Starch is scraped with horizontal after washing Knife centrifuge carries out mechanical dehydration, it is desirable to which it is 29-35% to take off to the water content of wet starch.
- 8. the method for Production by Enzymes cornstarch according to claim 1, it is characterised in that step (10) is dried：To upper Walk obtained wet corn starch and processing is dried, obtain dry cornstarch；Starch drying process condition controls：Dry temperature 127 DEG C, wind speed 28m/S, drying time 32min of degree；Dried dried starch moisture content 8-12%.
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