CN105367671A - Preparation method of potato starch - Google Patents

Preparation method of potato starch Download PDF

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Publication number
CN105367671A
CN105367671A CN201510923960.XA CN201510923960A CN105367671A CN 105367671 A CN105367671 A CN 105367671A CN 201510923960 A CN201510923960 A CN 201510923960A CN 105367671 A CN105367671 A CN 105367671A
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starch
cleaning
stage
wet
carry out
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管仕勇
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B30/00Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
    • C08B30/04Extraction or purification
    • C08B30/048Extraction or purification from potatoes

Abstract

The invention relates to a preparation method of potato starch. The preparation method comprises following steps: 1) raw material cleaning and impurity removing; 2) raw material grinding and slurry making; 3) separation of crude fiber; 4) rotational flow refining of crude starch milk; 5) vacuum dehydration of refined starch milk; and 6) air flow drying and screening of wet starch. The preparation method is reasonable in design; product quality is stable, and accords with super grade standards in national standard GB/T8884-2007; large-scale continuous production is ensured, and at the same time product quality is increased; starch yield is increased to be higher than 99%; energy consumption and water consumption of unit product are reduced effectively. Application of the preparation method is capable of promoting large-scale continuous industrialized production of potato starch, and increasing starch yield and the quality of finished products.

Description

The preparation method of yam starch
Technical field
The invention belongs to processing of farm products field, be specifically related to the preparation method of yam starch.
Background technology
Potato, owing to containing abundant starch in its stem tuber, is the basic material of good starch processing industry, has value of exploiting and utilizing, and yam starch processing is the important component part of Potato ring rot bacteria industry.
The processing of yam starch, it no matter is workshop-based or suitability for industrialized production, flow process is roughly all the same, is by the removal of the cleaning of potato tuber, fragmentation, fiber and enchylema substantially and starch is dry etc. that several shank is formed, and is completed by the facility matched with it.But it is bad also to there is quality product in the prior art of yam starch processing, easy breed bacteria in process of production; Thoroughly the starch granules in potato can not be separated, cause unnecessary financial loss, reduce production economy benefit; Unit consumption of water is comparatively large, unstable product quality, and starch granule loss is larger; Work in-process moisture content is unstable, easily blocking screen equipment, and loss starch, damages compass screen surface, the successional problem that impact is produced.
Summary of the invention
In order to solve original production line small particles recovery of starch difficulty and unstable product quality, problem that equipment failure rate is high, the invention provides the preparation method of yam starch.
The technical solution adopted in the present invention is:
The preparation method of yam starch, comprises the following steps:
1) raw material cleaning and removal of impurities: raw potatoes is delivered to after stoner removal of impurities through waterpower, carries out two-stage series connection cleaning;
Factory process raw potatoes used mostly is peasant household and is directly transported into factory after the results of field, wherein containing impurity such as a large amount of silt particle, even stones, as do not cleaned up, not only can cause the damage of processing units, also can impact the quality of starch product.So, in the course of processing of carrying out yam starch, must clean and remove stone to entering raw potatoes, cut weeds.Two-stage cleaning all adopts rotary drum washer, first step cleaning uses circulation cleaning wash water to carry out tentatively cleaning to save water for cleaning, raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process, more thoroughly clean to ensure that raw material cleans.
2) raw material grind, slurrying: the raw potatoes after cleaning is carried out fragmentation, and removing ferromagnetics and sand, obtains slurry;
In shattering process, because the potato slurry fluidity of fragmentation is poor, thus need to add process water and carry out pulp dilution.The impurity such as scrap iron removing are removed by the magnetic grid placed in chute by dilution potato slurry; Slurry is transported to cyclone desander through impeller pump or single pole spiral pump and removes sand.
3) coarse-fibred separation: by step 2) described in slurry transferring wash step by step to level Four starch and fiber separation unit, so that fiber is separated from starch, obtain coarse starch milk, described level Four starch and the first step of fiber separation unit, the second stage, the third stage are starch washing separation sieve, and the fourth stage is potato residue dehydration sieve;
Starch and fibre technology configure first three grade of starch washing separation sieve, and potato slurry middle reaches are as much as possible all washed from starch and separates, fourth stage potato residue dehydration has sieved and made a final check and dehydration.
4) coarse starch milk eddy flow refine: by step 3) described in coarse starch milk after again removing sand, pump into 20 grades of waterpower wet cyclones, carry out concentration and recovery, washing, purification step by step, the albumen in starch, enchylema juice and fine-fibered to be separated, obtain purified starch breast;
This technological design occupation area of equipment is little, soft water consumption is less, for protein isolate, fine-fibered, cell juice effect better, shorten the time of coarse starch milk washing isolated cell juice water simultaneously, be adapted to the raw potatoes processing that various starch content is different; Level Four starch granule recovery unit simultaneously by increasing decreases the loss of starch in outer row's enchylema, effectively improves starch recoveries.
5) vacuum hydro-extraction of purified starch breast: by step 4) in purified starch breast carry out vacuum hydro-extraction and obtain wet starch;
6) wet starch and fluidized drying and screen: by step 5) in wet starch to carry out and fluidized drying, dried starch is delivered to even storehouse, after making starch indices up to standard, carries out screen and pack warehouse-in.
First step cleaning in two-stage series connection cleaning preferably: step 1) uses circulation cleaning wash water tentatively to clean, and second stage cleaning uses clear water to clean, and the waste water after the cleaning of the second stage returns the first step after treatment with recycling; Raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process.
Through the used Cleaning Wastewater of first step cleaning machine, after cleaning machine silt container bottom valve adjustment water level, flow automatically to workshop internal drainage trench, flow automatically to workshop outer circulation after collecting with conveying water and carry water treatment station.The Cleaning Wastewater that second stage rotary drum washer and net belt type transfer roller top spray irrigation water are discharged then enters workshop trench, and gravity flow enters into circulating water treatment station, discharges after unnecessary conveying water finally enters sewage works process again.
The sulfurous acid solution relative to raw potatoes 7-8wt% is added in shattering process preferably: in step 2).
Add the sulfurous acid solution relative to raw potatoes 7-8% massfraction, to prevent potato syrup material and the variable color of air catalytic oxidation, impel starch granules and cell walls sharp separation and sterilization simultaneously.
De-iron magnetic substance preferably: step 2) adopts 9000-13000 Gauss permanent magnetic grid to remove.
After potato is fractured into slurry, there is deironing apparatus, preferably be arranged in the acclive chute of crusher lower, according to chute width, select 9000-13000 Gauss permanent magnetic steel column, steel column inside adopts unique magnetic circuit, makes magnetic source by permanent magnetism king NdFeB material, its magnetic field compared with strong, suction is large, de-ironing efficiency is high.After potato slurry is diluted by process water, in gravity flow process, remove saw blade crown, iron filings, starch and the centrifugation of fiber separation unit can be protected to sieve compass screen surface.Otherwise the crown of iron filings or Filing apparatus saw blade can damage the compass screen surface of centrifugal screen, if small particle size iron filings are by after centrifugal screen sieve aperture, be transported to eddy flow washing unit, the cyclone pipe inwall increased wear of swirler can be given, and can be mixed in starch emulsion and commodity starch.
In starch washing separation sieve preferably: step 3), the nozzle pressure of washing process water is 0.10-0.12MPa, and nozzle mounting inclination angle is 45 degree.
In order to effectively utilize above-mentioned three grades of starch washing separation sieves, from slurry, washing is separated whole free starch, first to guarantee that the nozzle pressure of washing process water controls between 0.10-0.12MPa, because technique washing water pressure is too low can affect separating effect, the too high meeting of pressure causes motor overload to generate heat, washing process water preferably adopts deionization soft water, and requires that nozzle outlet pressure lower than 0.25MPa, just must not can play free starch and be separated better and dewater; Secondly, be that nozzle setting angle is also very important, nozzle mounting inclination angle 45 degree is better.Angle of inclination should rotate reverse direction according to basket and tilt to install, and slurry could form tangent line on compass screen surface, is conducive to free starch particle by sieve plate hole.
Front 4 grades of swirlers of grade waterpower wet cyclone of 20 preferably: step 4) are equipped with 10mm plural parallel stage cyclone pipe to strengthen the recovery to starch granule, and rear 16 grades of swirlers all assemble 15mm plural parallel stage cyclone pipe with concentrated, washing, purification, protein isolate, cell juice and fiber.
This technique devises front 4 grades of swirlers especially and does to reclaim starch granule, is called for short recovery system, and rear 16 grades of swirlers, as concentrated, washing, purification, protein isolate, cell juice and fiber, are called for short purification system.Use 16 grades of purification separators to carry out the purification of starch emulsion, add the recovery of starch unit that level Four is independent in addition again, while ensureing starch milk refining effect, also significantly increase the yield of starch, make starch recoveries be promoted to more than 99%.
Preferably: step 2)-step 5) adopt PLC centralized Control.
PLC is programmable logic controller, it adopts a class programmable memory, for its internally stored program, actuating logic computing, sequential control, regularly, counting and the user oriented instruction such as arithmetical operation, and by numeral or analog pattern input/output various types of machinery of control or production process.
PLC centralized Control, optimizes technical process, at utmost decreases the water consumption of these four processing steps.
Preferably: step 6) and fluidized drying is that one-level negative-pressure air-flow is dry, and import hot air temperature is 130-140 DEG C, and Outlet Gas Temperature is 50-55 DEG C, and time of drying is 1.0-2.1m/s, and wind speed is 14-24m/s.
The drying of one-level negative-pressure air-flow is a kind of continuous form high-performance solid fluidized drying method, belong to and the one of fluidized drying, for drying temperature, if temperature is too low, due to the precipitation of moisture, dried starchy material does not reach dry object because making moist, and temperature is too high when exceeding yam starch gelatinization starting temperature more than 56 DEG C, starch is likely gelatinization and produce waste product just, but also likely damages starch granules profile and tarnish and reduce viscosity; For time of drying, because starch belongs to heat-sensitive material, time of drying is oversize can affect its quality; For wind speed, if wind speed is too low, the wet starch of little bulk can not be taken away with the wind, and easily make lumpy material surface be heated gelatinization and damaging, too high systemic resistance increase is too large, and product moisture is also wayward.
Closed type air decontamination chamber is provided with outside the heat exchanger of the air stream drying preferably: step 6).
Closed type air decontamination chamber arrange can be contained in air-isolation dust, mosquito, bacterium etc., such design, the purity of commodity starch can be ensured, meet HACPP food safety management, sanitary index also can ensure to reach the national top grade standard of national regulation food potato starch (GB/T8884/2007).
Even storehouse preferably: step 6) adopts the reflux type adjustment moisture of commodity starch and the Con trolling index of whiteness, carries out screen again after making starch indices reach specialized range.
Each start of production period, shutdown or because potato is when the shelf lives occurs to rot; the whiteness of commodity starch, moisture content and have certain difference when normally producing; therefore; this technique recovery starch stage design after the drying adds even storehouse; its objective is the moisture, whiteness and other Con trolling index that adopt reflux type adjustment commodity starch, after making starch indices reach specialized range, carry out screen again.If when the index such as starch, moisture evenly does not also reach and requires, deliver into even storehouse by feed back worm conveyor again even.Reach after standard until indices and carry out screen again.
Starch is in drying process; often there will be little part starch that the part dead angle of pulse area (enlarged tube), big syphon, cyclonic separator (cyclone) is pasted by gelatinization; along with the temperature variation meeting Automatic-falling produced and in air; these pre-gelatinized starches belong to flap, will have influence on final quality product as entered into finished product.For ensureing the requirement up to standard of the finished product fineness, therefore, these pre-gelatinized starches must be separated by screen.Through vibrosieve from commodity starch fineness be 100 orders (being equivalent to 150 μm) sieve percent of pass 99.90%, it is to be packaged that conforming articls starch is transported to finished bin temporary storage through screen underflow worm conveyor.And through the isolated pre-gelatinized flap of vibratory screening apparatus, be transported to gravity line through screen overflow worm conveyor, sell as feed after falling into Stall packaging.
Preferably: step 2)-step 3) described in potato be fractured into slurry and be no more than 5min between separating starch and fiber; Step 4) in from Crude starch emulsion concentration and recovery to purification be no more than 10min; Step 5) in from purified starch breast to vacuum hydro-extraction, be no more than 15min; Step 6) in from wet starch to and fluidized drying be no more than 2min, step 2) to step 6) and in from raw material crushing pulping to obtained finished product between time controling at 30-35min.
In order to obtain high-quality commodity starch, the slurry after potato is broken, needs to complete starch and fiber separation with the shortest time, and isolate enchylema as early as possible in starch emulsion.Wash from after potato fragmentation to starch and fiber separation, coarse starch milk eddy flow, concentrate, purify, starch milk dehydration, wet starch drying, need the deadline more short better, is conducive to improving viscosity, whiteness, glossiness.Theoretically, potato is fractured into slurry, overstand, after making it contact with the oxygen in air, some materials in potato slurry can be made to react, can oxidation stain be caused, especially even more serious containing (potato shagreen) during black nightshade glycosides in slurry.
Yam starch is the basic material of the industry such as food, sugar-refining industry, potato starch particle is large, the amylose starch polymerization degree is large, have that gelatinization point is lower, viscosity is high, good springiness, protein content are low, non-stimulated, color is comparatively white, not easily gel and the not easily characteristic such as degeneration, of many uses, there is the irreplaceable effect of other starch in some industries.Yam starch both can be used as raw materials of food processing or additive for food-processings such as bean vermicelli, bean jelly, ice cream, instant noodles, also can be used as industrial production auxiliary material for multiple industrial circles such as printing and dyeing, sizing, papermaking, casting, medicine, chemical industry, light industry, leathers.
Beneficial effect of the present invention is: present invention process is reasonable in design, product with stable quality, reach the top grade product standard of GB GB/T8884-2007, quality product is improve in the process ensureing extensive, continuous prodution, starch recoveries is promoted to more than 99%, effectively reduces the energy consumption of unit product and the consumption of water of productive use.By the application of this complete processing, promote the mass-producing of yam starch complete processing, serialization, suitability for industrialized production greatly, improve the starch recoveries in production process and end product quality.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Provide three specific embodiments below; to be further explained explanation to the present invention; it is to be noted that the present invention is not limited to following preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Embodiment one:
As shown in Figure 1, the invention provides a kind of preparation method of yam starch, comprise the steps:
1) raw material cleaning and removal of impurities: raw potatoes is delivered to after stoner removal of impurities through waterpower, carry out two-stage series connection cleaning, first step cleaning uses circulation cleaning wash water tentatively to clean, second stage cleaning uses water free from foreign meter to clean, and the waste water after the cleaning of the second stage returns the first step after treatment with recycling; Raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process.
2) raw material grind, slurrying: by cleaning after raw potatoes carry out fragmentation, the sulfurous acid solution relative to raw potatoes 7wt% is added in shattering process, and adopt 9000 Gauss's permanent magnetic grid removing ferromagnetics, adopt cyclone desander to carry out one-level desanding, obtain slurry;
3) coarse-fibred separation: by step 2) described in slurry transferring wash step by step to level Four starch and fiber separation unit, so that fiber is separated from starch, obtain coarse starch milk, described level Four starch and the first step of fiber separation unit, the second stage, the third stage are starch washing separation sieve, the fourth stage is potato residue dehydration sieve, wherein in starch washing separation sieve, the nozzle pressure of washing process water is set to 0.10MPa, and nozzle mounting inclination angle is 45 degree;
4) coarse starch milk eddy flow refine: by step 3) described in coarse starch milk after secondary desanding, pump into 20 grades of waterpower wet cyclones, carry out concentration and recovery, washing, purification step by step, albumen, enchylema juice and fine-fibered are separated from coarse starch milk, obtain purified starch breast, wherein front 4 grades of swirlers are equipped with 10mm plural parallel stage cyclone pipe to strengthen the recovery to starch granule, and rear 16 grades of swirlers all assemble 15mm plural parallel stage cyclone pipe with concentrated, washing, purification, protein isolate, cell juice and fiber;
5) vacuum hydro-extraction of purified starch breast: by step 4) in purified starch breast be delivered to vacuum rotary drum water extracter and carry out vacuum hydro-extraction and obtain wet starch;
6) wet starch and fluidized drying and screen: by step 5) in wet starch to carry out one-level negative-pressure air-flow dry, import hot air temperature is 130 DEG C, Outlet Gas Temperature is 50 DEG C, time of drying is 1.0m/s, wind speed is 14m/s, dried starch is delivered to even storehouse, after making starch indices up to standard, carries out screen and pack putting to obtain yam starch in storage.
Wherein step 2)-step 3) described in potato be fractured into slurry and be no more than 5min between separating starch and fiber; Step 4) in from Crude starch emulsion concentration and recovery to purification be no more than 10min; Step 5) in from purified starch breast to vacuum hydro-extraction, be no more than 15min; Step 6) in from wet starch to and fluidized drying be no more than 2min, step 2) to step 6) and in from raw material crushing pulping to obtained finished product between time controling at 30min.
Embodiment two:
As shown in Figure 1, the invention provides a kind of preparation method of yam starch, comprise the steps:
1) raw material cleaning and removal of impurities: raw potatoes is delivered to after stoner removal of impurities through waterpower, carry out two-stage series connection cleaning, first step cleaning uses circulation cleaning wash water tentatively to clean, second stage cleaning uses water free from foreign meter to clean, and the waste water after the cleaning of the second stage returns the first step after treatment with recycling; Raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process.
2) raw material grind, slurrying: by cleaning after raw potatoes carry out fragmentation, the sulfurous acid solution relative to raw potatoes 7.5wt% is added in shattering process, and adopt 11000 Gauss's permanent magnetic grid removing ferromagnetics, adopting cyclone desander except carrying out one-level desanding, obtaining slurry;
3) coarse-fibred separation: by step 2) described in slurry transferring wash step by step to level Four starch and fiber separation unit, so that fiber is separated from starch, obtain coarse starch milk, described level Four starch and the first step of fiber separation unit, the second stage, the third stage are starch washing separation sieve, the fourth stage is potato residue dehydration sieve, wherein in starch washing separation sieve, the nozzle pressure of washing process water is set to 0.11MPa, and nozzle mounting inclination angle is 45 degree;
4) coarse starch milk eddy flow refine: by step 3) described in coarse starch milk after again removing sand, pump into 20 grades of waterpower wet cyclones, carry out concentration and recovery, washing, purification step by step, albumen, enchylema juice and fine-fibered are separated from coarse starch milk, obtain purified starch breast, wherein front 4 grades of swirlers are equipped with 10mm plural parallel stage cyclone pipe to strengthen the recovery to starch granule, and rear 16 grades of swirlers all assemble 15mm plural parallel stage cyclone pipe with concentrated, washing, purification, protein isolate, cell juice and fiber;
5) vacuum hydro-extraction of purified starch breast: by step 4) in purified starch breast be delivered to vacuum rotary drum water extracter and carry out vacuum hydro-extraction and obtain wet starch;
6) wet starch and fluidized drying and screen: by step 5) in wet starch to carry out one-level negative-pressure air-flow dry, import hot air temperature is 135 DEG C, Outlet Gas Temperature is 52.5 DEG C, time of drying is 1.5m/s, wind speed is 19m/s, dried starch is delivered to even storehouse, after making starch indices up to standard, carries out screen and pack putting to obtain yam starch in storage.
Wherein step 2)-step 3) described in potato be fractured into slurry and be no more than 5min between separating starch and fiber; Step 4) in from Crude starch emulsion concentration and recovery to purification be no more than 10min; Step 5) in from purified starch breast to vacuum hydro-extraction, be no more than 15min; Step 6) in from wet starch to and fluidized drying be no more than 2min, step 2) to step 6) and in from raw material crushing pulping to obtained finished product between time controling at 33min.
Embodiment three:
As shown in Figure 1, the invention provides a kind of preparation method of yam starch, comprise the steps:
1) raw material cleaning and removal of impurities: raw potatoes is delivered to after stoner removal of impurities through waterpower, carry out two-stage series connection cleaning, first step cleaning uses circulation cleaning wash water tentatively to clean, second stage cleaning uses water free from foreign meter to clean, and the waste water after the cleaning of the second stage returns the first step after treatment with recycling; Raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process.
2) raw material grind, slurrying: by cleaning after raw potatoes carry out fragmentation, the sulfurous acid solution relative to raw potatoes 8wt% is added in shattering process, and adopt 13000 Gauss's permanent magnetic grid removing ferromagnetics, adopt cyclone desander to carry out one-level desanding, obtain slurry;
3) coarse-fibred separation: by step 2) described in slurry transferring wash step by step to level Four starch and fiber separation unit, so that fiber is separated from starch, obtain coarse starch milk, described level Four starch and the first step of fiber separation unit, the second stage, the third stage are starch washing separation sieve, the fourth stage is potato residue dehydration sieve, wherein in starch washing separation sieve, the nozzle pressure of washing process water is set to 0.12MPa, and nozzle mounting inclination angle is 45 degree;
4) coarse starch milk eddy flow refine: by step 3) described in coarse starch milk after secondary desanding, pump into 20 grades of waterpower wet cyclones, carry out concentration and recovery, washing, purification step by step, albumen, enchylema juice and fine-fibered are separated from coarse starch milk, obtain purified starch breast, wherein front 4 grades of swirlers are equipped with 10mm plural parallel stage cyclone pipe to strengthen the recovery to starch granule, and rear 16 grades of swirlers all assemble 15mm plural parallel stage cyclone pipe with concentrated, washing, purification, protein isolate, cell juice and fiber;
5) vacuum hydro-extraction of purified starch breast: by step 4) in purified starch breast be delivered to vacuum rotary drum water extracter and carry out vacuum hydro-extraction and obtain wet starch;
6) wet starch and fluidized drying and screen: by step 5) in wet starch to carry out one-level negative-pressure air-flow dry, import hot air temperature is 140 DEG C, Outlet Gas Temperature is 55 DEG C, time of drying is 2.1m/s, wind speed is 24m/s, dried starch is delivered to even storehouse, after making starch indices up to standard, carries out screen and pack putting to obtain yam starch in storage.
Wherein step 2)-step 3) described in potato be fractured into slurry and be no more than 5min between separating starch and fiber; Step 4) in from Crude starch emulsion concentration and recovery to purification be no more than 10min; Step 5) in from purified starch breast to vacuum hydro-extraction, be no more than 15min; Step 6) in from wet starch to and fluidized drying be no more than 2min, step 2) to step 6) and in from raw material crushing pulping to obtained finished product between time controling at 35min.

Claims (10)

1. a preparation method for yam starch, is characterized in that: comprise the following steps:
1) raw material cleaning and removal of impurities: raw potatoes is delivered to after stoner removal of impurities through waterpower, carries out two-stage series connection cleaning;
2) raw material grind, slurrying: by cleaning after raw potatoes carry out fragmentation, removing ferromagnetics after carry out one-level desanding, obtain slurry;
3) coarse-fibred separation: by step 2) described in slurry transferring wash step by step to level Four starch and fiber separation unit, so that fiber is separated from starch, obtain coarse starch milk, described level Four starch and the first step of fiber separation unit, the second stage, the third stage are starch washing separation sieve, and the fourth stage is potato residue dehydration sieve;
4) coarse starch milk eddy flow refine: by step 3) described in coarse starch milk after secondary desanding, pump into 20 grades of waterpower wet cyclones, carry out concentration and recovery, washing, purification step by step, the albumen in starch, enchylema juice and fine-fibered to be separated, obtain purified starch breast;
5) vacuum hydro-extraction of purified starch breast: by step 4) in purified starch breast carry out vacuum hydro-extraction and obtain wet starch;
6) wet starch and fluidized drying and screen: by step 5) in wet starch to carry out and fluidized drying, dried starch is delivered to even storehouse, after making starch indices up to standard, carries out screen and pack warehouse-in.
2. method according to claim 1, it is characterized in that: step 1) described in two-stage series connection cleaning in first step cleaning use circulation cleaning wash water tentatively to clean, second stage cleaning uses clear water to clean, and the waste water after the cleaning of the second stage returns the first step after treatment with recycling; Raw material after two-stage series connection cleaning carries out a cleaning showers again before entering broken process.
3. method according to claim 1, is characterized in that: in step 2) described in shattering process in add sulfurous acid solution relative to raw potatoes 7-8wt%.
4. method according to claim 1, is characterized in that: step 2) described in de-iron magnetic substance adopt 9000-13000 Gauss permanent magnetic grid to remove.
5. method according to claim 1, is characterized in that: step 3) described in starch washing separation sieve in the nozzle pressure of washing process water be 0.10-0.12MPa, nozzle mounting inclination angle is 45 degree.
6. method according to claim 1, it is characterized in that: step 4) described in front 4 grades of swirlers of 20 grades of waterpower wet cyclones be equipped with 10mm plural parallel stage cyclone pipe to strengthen the recovery to starch granule, rear 16 grades of swirlers all assemble 15mm plural parallel stage cyclone pipe with concentrated, washing, purification, protein isolate, cell juice and fiber.
7. method according to claim 1, is characterized in that: step 2)-step 5) adopt PLC centralized Control.
8. method according to claim 1, it is characterized in that: step 6) described in and fluidized drying to be one-level negative-pressure air-flow dry, import hot air temperature is 130-140 DEG C, and Outlet Gas Temperature is 50-55 DEG C, time of drying is 1.0-2.1m/s, and wind speed is 14-24m/s.
9. method according to claim 1, is characterized in that: step 6) described in even storehouse adopt the reflux type adjustment moisture of commodity starch and the Con trolling index of whiteness, carry out screen again after making starch indices reach specialized range.
10. method according to claim 1, is characterized in that: step 2)-step 3) described in potato be fractured into slurry and be no more than 5min between separating starch and fiber; Step 4) in from Crude starch emulsion concentration and recovery to purification be no more than 10min; Step 5) in from purified starch breast to vacuum hydro-extraction, be no more than 15min; Step 6) in from wet starch to and fluidized drying be no more than 2min, step 2) to step 6) and in from raw material crushing pulping to obtained finished product between time controling at 30-35min.
CN201510923960.XA 2015-12-14 2015-12-14 Preparation method of potato starch Pending CN105367671A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN105777914A (en) * 2016-03-08 2016-07-20 林泽 Potato starch and making method thereof
CN106819357A (en) * 2017-01-23 2017-06-13 信阳山信生物食品科技有限公司 A kind of cereal chaff cake protein extraction process
CN107177435A (en) * 2017-05-23 2017-09-19 甘肃圣大方舟马铃薯变性淀粉有限公司 A kind of potato comprehensive process new technology
CN114195905A (en) * 2021-12-09 2022-03-18 杨永学 Potato starch centrifugal processing equipment

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CN105777914A (en) * 2016-03-08 2016-07-20 林泽 Potato starch and making method thereof
CN106819357A (en) * 2017-01-23 2017-06-13 信阳山信生物食品科技有限公司 A kind of cereal chaff cake protein extraction process
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CN114195905B (en) * 2021-12-09 2023-02-03 佛山市南海华昊华丰淀粉有限公司 Potato starch centrifugal processing equipment

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