CN106317232A - Potato starch extraction method - Google Patents
Potato starch extraction method Download PDFInfo
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- CN106317232A CN106317232A CN201610796268.XA CN201610796268A CN106317232A CN 106317232 A CN106317232 A CN 106317232A CN 201610796268 A CN201610796268 A CN 201610796268A CN 106317232 A CN106317232 A CN 106317232A
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- starch
- rhizoma solani
- solani tuber
- tuber osi
- potato
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/04—Extraction or purification
- C08B30/048—Extraction or purification from potatoes
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Abstract
The invention provides a potato starch extraction method. The method includes steps: 1) cleaning potatoes; 2) mixing and grinding the cleaned potatoes along with water, an ant-browning reagent and biological auxiliary agents to obtain potato slurry; wherein the biological auxiliary agents include cellulase and pectinase; 3) screening the potato slurry obtained at the step 2) to obtain potato powder emulsion; 4) statically settling the potato powder emulsion obtained at the step 3) to obtain potato starch. By participation of the anti-browning reagent and the biological auxiliary agents in grinding of the potatoes, the anti-browning reagent is capable of effectively preventing oxidative browning of ground potato products, and accordingly pure white color of the starch can be guaranteed, and organoleptic quality of the starch is improved; due to addition of the cellulase and the pectinase as the biological auxiliary agents, viscosity of ground potato pulp can be reduced by the cellulase and the pectinase, and potato starch yield can be beneficially increased to 10.42%-11.15% and is increased by 5%-10% as compared with that of a control group.
Description
Technical field
The present invention relates to processing of farm products field, be specifically related to the extracting method of a kind of potato starch.
Background technology
Rhizoma Solani tuber osi (Solanum tuberosum) has another name called Rhizoma Solani tuber osi, Rhizoma Solani tuber osi etc., is that Solanaceae Solanum perennial tuber draft is planted
Thing, primary growth, at north latitude 35-degree~50 °, illumination is strong, day and night temperature is big, weather cools sand band, is annual or one
Year two season cultivation.Rhizoma Solani tuber osi is one of the world five generalized grain crop, annual value of production about 3,000,000,000 tons.Potato starch is important planting
Thing starch, its volume of production and commodity amount are only second to corn starch, occupy second in all plant amylums.Owing to Rhizoma Solani tuber osi is formed sediment
The feature of powder its own molecular structure and property, potato starch is that other starch institute is irreplaceable, and potato starch is
The industries such as food, medicine, chemical industry, oil, weaving, papermaking, agricultural, building materials provide abundant raw material.Potato starch can
Industrially being widely used being further processed into modified starch, such as, pre-gelatinized starch can be used for saving heat treatment
And require the aspect such as thickening, guarantor's type, cake quality can be improved, stablize the internal structure etc. of frozen food;Additionally pre-gelatinized starch
Apply in pharmaceuticals industry, the production of tablet is played the effect of material balance and binding agent;At papermaking, weaving, petroleum drilling
In the industry such as spy, building, also make full use of the characteristic of the instant and high gluing of pre-gelatinized starch.
Although potato starch being had on market the biggest demand, but China's potato starch production capacity being 5000
The above Large-scale enterprises of ton only has 10, and wherein more than 20,000 tons only 4 of production capacity, produce potato starch year 130,000
About Dun, accounting for more than the 40% of total output, remaining working ability has in the mini potato processing enterprise of the supreme kiloton of hundreds of ton
Four or five ten, the potato starch workshop produced by indigenous method also cannot added up, the volume of production that these little factories are added together accounts for
The 60% of whole nation total amount, nearly 170,000 tons.Large-scale production enterprise the most still occupies an leading position, and supply falls short of demand for product, quality
Good, price height, and the product of small processing supplements remaining market with low price, but still have the Potato pure starch of more than half
Market is still with regard to dependence on import.
Rhizoma Solani tuber osi is mainly cleaned water after pulverizing and proposes filtration by traditional Potato starch extraction technology, and starch emulsion stands
Separate post-drying and obtain potato starch, in order to prevent starch brownization blackening in the course of processing from affecting starch quality, generally at powder
Adding black dose of the resistance of 1% during broken, such as, Xu Li et al. reports the above-mentioned traditional handicraft of employing and carries potato starch
Taking, the yield optimum of potato starch is 6.32% (extraction process of potato starch and hard factor thereof, Xu Li, Liaoning
Work, 2006,35 (12): 698~699).Visible, prior art still suffers from Potato starch extraction technology extract yield
Low problem.
Summary of the invention
In view of this, it is an object of the invention to provide the extracting method of a kind of potato starch, it is possible to be effectively improved horse
The yield of bell sweet potato starch, it is thus achieved that yield is high, the measured potato starch products of matter.
In order to realize foregoing invention purpose, the present invention provides techniques below scheme:
The invention provides the extracting method of a kind of potato starch, comprise the following steps:
1) Rhizoma Solani tuber osi is cleaned;
2) by described step 1) clean after Rhizoma Solani tuber osi mix with water, prevent-browning reagent and biological assistant crush, obtain horse
Bell potato serosity;
Described biological assistant includes cellulase and pectase;
3) by described step 2) the Rhizoma Solani tuber osi serosity that obtains sieves, and siftage is dehydrated potato powder breast;
4) by described step 3) after the dehydrated potato powder breast that obtains staticly settles, obtain potato starch.
Preferably, described step 2) in prevent-browning reagent and the gross mass of biological assistant account for potato water gross mass 0.3~
1%.
Preferably, described step 2) in the mass ratio of biological assistant and described prevent-browning reagent be 1:1~5.
Preferably, described step 2) in prevent-browning reagent mix 0~12min with Rhizoma Solani tuber osi and water after again with biological assistant mix
Close.
Preferably, described step 2) mass ratio of cellulase and pectase is 1:1~9.
Preferably, described step 3) in screening aperture be 50~100 mesh.
Preferably, described step 3) in the lower part of screen of screening divide and again crush, repeat step 3) operation, will obtain
Dehydrated potato powder breast merge.
Preferably, described step 4) in precipitation time be 4~10h.
Preferably, described step 4) in also include discarding upper liquid after precipitation, the precipitate obtained mixes with water again to be washed
Wash starch;Described Rhizoma Solani tuber osi is 1:1~10 with the mass ratio of washing starch water.
Preferably, described step 4) in discard upper liquid after also include Rhizoma Solani tuber osi precipitate dehydrate;Described dry
Temperature be 50~70 DEG C.
The extracting method of a kind of potato starch that the present invention provides, comprises the following steps: 1) clean Rhizoma Solani tuber osi;2) by institute
State step 1) clean after Rhizoma Solani tuber osi mix with water, prevent-browning reagent and biological assistant crush, obtain Rhizoma Solani tuber osi serosity;Described
Biological assistant includes cellulase and pectase;3) by described step 2) the Rhizoma Solani tuber osi serosity that obtains sieves, and siftage is
Dehydrated potato powder breast;4) by described step 3) after the dehydrated potato powder breast that obtains staticly settles, obtain potato starch.The present invention provides
Method, Rhizoma Solani tuber osi crushes and completes under conditions of prevent-browning reagent and biological assistant participate in, and wherein prevent-browning reagent can be effective
Prevent the anti-raw oxidation of Rhizoma Solani tuber osi breakdown products, thus ensure that the starch color extracted is pure white, improve the organoleptic quality of gained starch;
During cellulase and pectase add extraction to as biological assistant simultaneously, by enzymolysis pectin and cellulose thus reduce
Rhizoma Solani tuber osi crushes the viscosity of slurry, be conducive to improve potato starch yield, make potato starch yield be 10.42%~
11.15%, improve 5%-10% than matched group potato starch yield.
Further, the extracting method of a kind of potato starch that the present invention provides, Rhizoma Solani tuber osi is 1:1 with the mass ratio of water
~the yield of potato starch when 10, can be improved further;Prevent-browning reagent and biological assistant are added simultaneously or prevent-browning examination
Agent is added prior to biological assistant, and the raising to potato starch yield has certain facilitation;Further, the present invention
By biological assistant cellulase and the mass ratio of pectase, it is possible to continue to improve the yield of potato starch.
Accompanying drawing explanation
Fig. 1 is the flow chart of the extracting method of a kind of potato starch.
Detailed description of the invention
The invention provides the extracting method of a kind of potato starch, comprise the following steps:
1) Rhizoma Solani tuber osi is cleaned;
2) by described step 1) clean after Rhizoma Solani tuber osi mix with water, prevent-browning reagent and biological assistant crush, obtain horse
Bell potato serosity;
Described biological assistant includes cellulase and pectase;
3) by described step 2) the Rhizoma Solani tuber osi serosity that obtains sieves, and siftage is dehydrated potato powder breast;
4) by described step 3) after the dehydrated potato powder breast that obtains staticly settles, obtain potato starch.
Accompanying drawing 1 is for extracting flow process: supernatant liquid → add water stirring to select potato → clean → grind → sieve → stand → outwell
Standing → buchner funnel sucking filtration → drying → finished product.
The present invention first will be used for preparing the potato cleaning of starch.In the present invention, the most right before cleaning Rhizoma Solani tuber osi
Described Rhizoma Solani tuber osi selects, and specifically chosen Rhizoma Solani tuber osi complete, that go mouldy without germinateing, without pest and disease damage, nothing is as raw material.
In the present invention, kind and the source of described Rhizoma Solani tuber osi are not particularly limited, and use well known to those skilled in the art
Rhizoma Solani tuber osi, concrete can be commercial goods.
In the present invention, the method for described cleaning is not particularly limited, and uses cleaning well-known to those skilled in the art
Method.In embodiments of the present invention, described cleaning is to use hairbrush to scrub Rhizoma Solani tuber osi surface, especially to Ma Ling
Potato depression in the surface is cleared up.In the present invention, potato cleaning the cleanest, quality and the purity of extracting starch are the highest.
After completing the cleaning to Rhizoma Solani tuber osi, the present invention is by the Rhizoma Solani tuber osi after described cleaning and water, prevent-browning reagent and biology
Auxiliary agent mixing is broken, obtains Rhizoma Solani tuber osi serosity.The method of described mixing is not particularly limited by the present invention, uses art technology
The technical scheme of the mixing known to personnel.In the present invention, it is combined by stirring described in complete.
In the present invention, described broken before preferably Rhizoma Solani tuber osi is cut into slices, obtain potato cutting.Described Rhizoma Solani tuber osi
The length of stripping and slicing is preferably 1.0~3.0cm, more preferably 1.5cm;Described potato cutting generous be preferably 0.5~
1.0cm, more preferably 0.8cm.
In the present invention, mix with biological assistant again after described prevent-browning reagent preferably mixes 0~12min with Rhizoma Solani tuber osi and water
Close, more preferably 2~10min, most preferably 3~5min.The present invention does not has special limit to charging sequence during described mixing
System, uses the conventional successive that material well known to those skilled in the art mixes;In the present invention, it is preferred to first by Rhizoma Solani tuber osi and
Water mixes, then is added thereto to prevent-browning reagent, is added to biological assistant again after adding prevent-browning reagent 0~12min.
In the present invention, described broken time Rhizoma Solani tuber osi and the mass ratio of water be preferably 1:1~3, more preferably 1:2.
In the present invention, described broken during preferably limit throw potato block limit and add water, to guarantee the Ma Ling obtained
Potato serosity is the whitest.
In the present invention, described broken after obtain Rhizoma Solani tuber osi grain, granularity preferably 40~60 mesh of described Rhizoma Solani tuber osi grain, more excellent
Elect 50 mesh as.In the present invention, described broken method is not particularly limited, and uses well-known to those skilled in the art broken
Technical scheme.
The mixed liquor obtained after described crushing preferably is carried out defibrination by the present invention, obtains Rhizoma Solani tuber osi serosity.Described Rhizoma Solani tuber osi
The degree of fragmentation of serosity is preferably greater than 90%.The method of described defibrination is not particularly limited, and uses well known to those skilled in the art
The technical scheme of defibrination.In the present invention, described defibrination uses fiberizer.
In the present invention, the gross mass of described prevent-browning reagent and biological assistant preferably comprise potato water gross mass 0.3~
1%, more preferably 0.4~0.8%, most preferably 0.6%.
In the present invention, described biological assistant is preferably 1:1~5 with the mass ratio of described prevent-browning reagent, more preferably
1:3.Kind and the source of described prevent-browning reagent are not particularly limited by the present invention, use well-known to those skilled in the art
Prevent-browning reagent.Prevent-browning reagent described in embodiments of the present invention is anhydrous sodium sulfite, sodium sulfite, Jiao Ya
Sodium sulfate, citric acid, more preferably anhydrous sodium sulfite.
In the present invention, described biological assistant includes cellulase and pectase.In the present invention, described cellulase and
The mass ratio of pectase is 1:1~9, more preferably 1:3~6, most preferably 1:5.
In the present invention, the enzyme activity of described cellulase is preferably 18,000~25,000U/g, and more preferably 20,
000U/g, the enzyme activity of described pectase is preferably 35,000~45,000U/g, and more preferably 40,000U/g.
The source of described cellulase and pectase is not particularly limited by the present invention, uses those skilled in the art institute ripe
The cellulase known and pectase, concrete, the commercial goods of cellulase and pectase can be used.
After the Rhizoma Solani tuber osi serosity obtained, described Rhizoma Solani tuber osi serosity is sieved by the present invention, and siftage is dehydrated potato powder breast.
In the present invention, the aperture of described screening is preferably 50~100 mesh, more preferably 60~90 mesh.
The present invention does not has special restriction to the material of the sieve that described screening is used, and uses those skilled in the art to know
Metallic screen.In the present invention, described screening preferably employs the metallic screen screen of 50~70 mesh once, to remove triturate
In fiber, the tissue not ground and impurity, the siftage obtained.
After described in technique scheme, screening obtains siftage, the present invention is preferably by again broken for described siftage and again
Screening, merges siftage and obtains dehydrated potato powder breast.In the present invention, described again broken method preferably with above-mentioned technical side
Technical scheme broken described in case is identical.In the present invention, the described aperture again sieved is preferably 80~100 mesh.
The present invention preferably repeats siftage described in technique scheme and repeats broken and sieve 2~5 times, more preferably repeats
3 times, merge siftage and obtain dehydrated potato powder breast.
After obtaining dehydrated potato powder breast, described dehydrated potato powder breast is precipitated by the present invention, obtains potato starch.
In the present invention, described precipitation preferably employs to staticly settle and carries out.Described staticly settle the time and be preferably 4~10h,
More preferably 5~8h, most preferably 7h.
After described precipitation, split-phase obtains upper liquid and precipitate, and the present invention preferably discards upper liquid, the precipitate obtained,
Described precipitate is potato starch.The described method discarding upper liquid is not particularly limited by the present invention, uses this area skill
The technical scheme discarding upper liquid known to art personnel.In the embodiment of the present invention, described in discard the method for upper liquid and be
Directly topple over.
After being precipitated thing, described precipitate is preferably mixed by the present invention with water, again precipitates.In the present invention, described
Rhizoma Solani tuber osi is 1:1~10 with the mass ratio of sedimentation starch water.
In the present invention, described in the precipitate that obtains preferably mix with water, the mixture obtained carries out the step precipitated again
Rapid preferably repetition 2~5 times, more preferably 3 times.
In the present invention, dehydrate is preferably carried out by repeatedly precipitating the precipitate obtained.
In the present invention, the method for described dehydration is preferably and uses buchner funnel sucking filtration.
In the present invention, the pressure of described sucking filtration is preferably 0.05~0.1Mpa, more preferably 0.08Mpa.
In the present invention, the aperture of the filter cloth of described sucking filtration is preferably 80~100 mesh.
Described dry method is not particularly limited by the present invention, uses drying means well-known to those skilled in the art
?.The most described dry method is to use baking oven to dry.In the present invention, described dry temperature
Degree is 50~70 DEG C, more preferably 55~65 DEG C, most preferably 60 DEG C.
In the present invention, the difference that described dry degree is preferably twice weighing is not more than 1%.
The extracting method of a kind of potato starch provided the present invention below in conjunction with embodiment is described in detail, but
It is they can not to be interpreted as limiting the scope of the present invention.
Embodiment 1
With commercially available Rhizoma Solani tuber osi as test raw material, discard imperfect, germinate, the Rhizoma Solani tuber osi of the defect such as degenerate, therefrom select
The Rhizoma Solani tuber osi of high-quality is as test raw material.With hairbrush, Rhizoma Solani tuber osi is cleaned thoroughly under tap water, cleaning the cleanest,
In the test carried out subsequently, the quality of the starch of gained is the best.The Rhizoma Solani tuber osi cleaned up need not be peeled, be cut into by knife
Being about 1.5cm, the generous small pieces for 0.8cm, weigh about 100g, and according to the ratio of mass ratio 1:1, Rhizoma Solani tuber osi and water are put into mill
Serosity is worn in pulp grinder.For making the serosity uniform and smooth ground, being creamy white, Tou Shukuai limit, limit is wanted to add tap water when defibrination.
Meanwhile add prevent-browning reagent sodium sulfite, after pulverizing 3min, be subsequently adding cellulase and pectin that mass ratio is 1:1
Enzyme, makes the gross mass of prevent-browning reagent and biological assistant account for the 0.3% of potato water gross mass, wherein biological assistant and described prevent-browning
The mass ratio of reagent is preferably 1:5.Degree of fragmentation, more than 90%, grinds 2 times.After Rhizoma Solani tuber osi making beating, first with the metal of 50 mesh
Sieve screen once, to remove the fiber in triturate, the tissue not ground and impurity.Siftage is powder breast, and on sieve, bits enter
Row second time sieve and wash, recovery section starch, the starch bits after cleaning give over to after use, the most again with the metallic screen of 100 mesh to entirely
Portion's powder breast once filters, to remove more tiny potato slag.Add water during screen and wash out starch in order to from the potato slag ground
Grain.Potato starch serosity after filtration, after 6h staticly settles, tilts to outwell the water above starch and scum silica frost the most gently,
Being subsequently adding appropriate clear water to be stirred, raw material Rhizoma Solani tuber osi is 1:5 with the mass ratio of clear water, then the second time carrying out 10h is sunk
Forming sediment, the starch obtained is relatively white, pure.When the complete cementation of beaker bottom starch and supernatant transparent after, supernatant can be outwelled
Liquid, plays powder and dries.After starch wash is clean, first uses buchner funnel sucking filtration to obtain moisture content and be about the wet shallow lake of about 40%
Powder, then puts into 60 DEG C of baking ovens wet starch, is dried about 60min.I.e. obtain finished product of starch after to be dried, then weigh calculating.
Embodiment 2
With commercially available Rhizoma Solani tuber osi as test raw material, discard imperfect, germinate, the Rhizoma Solani tuber osi of the defect such as degenerate, therefrom select
The Rhizoma Solani tuber osi of high-quality is as test raw material.With hairbrush, Rhizoma Solani tuber osi is cleaned thoroughly under tap water, cleaning the cleanest,
In the test carried out subsequently, the quality of the starch of gained is the best.The Rhizoma Solani tuber osi cleaned up need not be peeled, be cut into by knife
Being about 2.5cm, the generous small pieces for 0.5cm, weigh about 100g, and according to the ratio of mass ratio 1:2, Rhizoma Solani tuber osi and water are put into mill
Serosity is worn in pulp grinder.For making the serosity uniform and smooth ground, being creamy white, Tou Shukuai limit, limit is wanted to add tap water when defibrination.
Meanwhile add prevent-browning reagent sodium sulfite, after pulverizing 5min, be subsequently adding cellulase and pectin that mass ratio is 1:9
Enzyme, makes the gross mass of prevent-browning reagent and biological assistant account for the 0.4% of potato water gross mass, wherein biological assistant and described prevent-browning
The mass ratio of reagent is preferably 1:3.The biggest then flour extraction of degree of crushing is the highest, typically require degree of fragmentation more than 90%, for thorough
Cell tissue is destroyed at the end, typically need to grind 2 times.After Rhizoma Solani tuber osi making beating, first with the metallic screen screen of 60 mesh once, to remove mill
Fiber in mincing, the tissue not ground and impurity.Siftage is powder breast, and on sieve, bits carry out sieving and washing for the second time, recoverer
Point starch, the starch bits after cleaning give over to after use, with the metallic screen of 90 mesh, whole powder breasts are once filtered the most again, with
Remove more tiny potato slag.All need during screen to add water and wash out starch grain in order to from the potato slag ground.Rhizoma Solani tuber osi after filtration
Farinaceous size, after 7h staticly settles, tilts to outwell the water above starch and scum silica frost the most gently, is subsequently adding appropriate clear water
Being stirred, raw material Rhizoma Solani tuber osi is 1:1 with the mass ratio of clear water, then carries out the second time precipitation of 9h, and the starch obtained can be more
Pure white, pure.When the complete cementation of beaker bottom starch and supernatant transparent after, supernatant can be outwelled, rise powder dry.Starch is clear
After wash clean, moisture content is the highest, it is necessary to be dehydrated, and first uses buchner funnel sucking filtration to obtain moisture content and is about about 40%
Wet starch, then puts into 70 DEG C of baking ovens wet starch, is dried about 40min.Finished product of starch, then weightometer is i.e. obtained after to be dried
Calculate.
Embodiment 3
With commercially available Rhizoma Solani tuber osi as test raw material, discard imperfect, germinate, the Rhizoma Solani tuber osi of the defect such as degenerate, therefrom select
The Rhizoma Solani tuber osi of high-quality is as test raw material.With hairbrush, Rhizoma Solani tuber osi is cleaned thoroughly under tap water, cleaning the cleanest,
In the test carried out subsequently, the quality of the starch of gained is the best.The Rhizoma Solani tuber osi cleaned up need not be peeled, be cut into by knife
Being about 1.5cm, the generous small pieces for 1.0cm, weigh about 100g, and according to the ratio of mass ratio 1:2, Rhizoma Solani tuber osi and water are put into mill
Serosity is worn in pulp grinder.For making the serosity uniform and smooth ground, being creamy white, Tou Shukuai limit, limit is wanted to add tap water when defibrination.
Meanwhile add prevent-browning reagent sodium sulfite, after pulverizing 10min, be subsequently adding cellulase and fruit that mass ratio is 1:5
Glue enzyme, makes the gross mass of prevent-browning reagent and biological assistant account for the 0.6% of potato water gross mass, and wherein biological assistant is anti-brown with described
The mass ratio becoming reagent is preferably 1:2.The biggest then flour extraction of degree of crushing is the highest, typically require degree of fragmentation more than 90%, for
Thoroughly destroy cell tissue, typically need to grind 2 times.After Rhizoma Solani tuber osi making beating, first with the metallic screen screen of 50 mesh once, to remove
Fiber in triturate, the tissue not ground and impurity.Siftage is powder breast, and on sieve, bits carry out sieving and washing for the second time, reclaim
Partial starch, the starch bits after cleaning give over to after use, with the metallic screen of 100 mesh, whole powder breasts are carried out once mistake the most again
Filter, to remove more tiny potato slag.All need during screen to add water and wash out starch grain in order to from the potato slag ground.Horse after filtration
Bell sweet potato starch serosity, after 6h staticly settles, tilts to outwell the water above starch and scum silica frost the most gently, is subsequently adding appropriate
Clear water is stirred, and raw material Rhizoma Solani tuber osi is 1:5 with the mass ratio of clear water, then carries out the second time precipitation of 10h, the starch meeting obtained
Relatively white, pure.When the complete cementation of beaker bottom starch and supernatant transparent after, supernatant can be outwelled, rise powder dry.Form sediment
After powder cleans up, moisture content is the highest, it is necessary to be dehydrated, and first uses buchner funnel sucking filtration to obtain moisture content and is about 40% left side
Right wet starch, then puts into 60 DEG C of baking ovens wet starch, is dried about 60min.I.e. obtain finished product of starch after to be dried, then claim
Amount calculates.
Embodiment 4
With commercially available Rhizoma Solani tuber osi as test raw material, discard imperfect, germinate, the Rhizoma Solani tuber osi of the defect such as degenerate, therefrom select
The Rhizoma Solani tuber osi of high-quality is as test raw material.With hairbrush, Rhizoma Solani tuber osi is cleaned thoroughly under tap water, cleaning the cleanest,
In the test carried out subsequently, the quality of the starch of gained is the best.The Rhizoma Solani tuber osi cleaned up need not be peeled, be cut into by knife
Being about 2.5cm, the generous small pieces for 0.6cm, weigh about 100g, and according to the ratio of mass ratio 1:3, Rhizoma Solani tuber osi and water are put into mill
Serosity is worn in pulp grinder.For making the serosity uniform and smooth ground, being creamy white, Tou Shukuai limit, limit is wanted to add tap water when defibrination.
Meanwhile add prevent-browning reagent sodium sulfite and cellulase that mass ratio is 1:1.5 and pectase, make prevent-browning reagent
Accounting for the 1% of potato water gross mass with the gross mass of biological assistant, wherein biological assistant is preferred with the mass ratio of described prevent-browning reagent
For 1:1.The biggest then flour extraction of degree of crushing is the highest, typically require degree of fragmentation more than 90%, for thoroughly destroying cell tissue, one
As need to grind 3 times.After Rhizoma Solani tuber osi making beating, first with the metallic screen screen of 70 mesh once, to remove fiber in triturate, not grind
Broken tissue and impurity.Siftage is powder breast, and on sieve, bits carry out sieving and washing for the second time, recovery section starch, the shallow lake after cleaning
Granulated slag give over to after use, with the metallic screen of 80 mesh, whole powder breasts are once filtered the most again, to remove more tiny potato slag.
All need during screen to add water and wash out starch grain in order to from the potato slag ground.Potato starch serosity after filtration, quiet through 6h
After putting precipitation, tilt to outwell the water above starch and scum silica frost the most gently, be subsequently adding appropriate clear water and be stirred, raw material Ma Ling
Potato is 1:10 with the mass ratio of clear water, then carries out the second time precipitation of 8h, and the starch obtained can be relatively white, pure.Work as beaker
Bottom the complete cementation of starch and supernatant transparent after, supernatant can be outwelled, rise powder dry.After starch wash is clean, moisture content
The highest, it is necessary to be dehydrated, first use buchner funnel sucking filtration to obtain moisture content and be about the wet starch of about 40%, then wet
Starch puts into 50 DEG C of baking ovens, is dried about 25min.I.e. obtain finished product of starch after to be dried, then weigh calculating.
Embodiment 5
With commercially available Rhizoma Solani tuber osi as test raw material, discard imperfect, germinate, the Rhizoma Solani tuber osi of the defect such as degenerate, therefrom select
The Rhizoma Solani tuber osi of high-quality is as test raw material.With hairbrush, Rhizoma Solani tuber osi is cleaned thoroughly under tap water, cleaning the cleanest,
In the test carried out subsequently, the quality of the starch of gained is the best.The Rhizoma Solani tuber osi cleaned up need not be peeled, be cut into by knife
Being about 2.5cm, the generous small pieces for 0.5cm, weigh about 100g, and according to the ratio of mass ratio 1:2, Rhizoma Solani tuber osi and water are put into mill
Serosity is worn in pulp grinder.Degree of fragmentation, more than 90%, for thoroughly destroying cell tissue, typically need to grind 3 times.Rhizoma Solani tuber osi pulls an oar it
After, first with the metallic screen screen of 70 mesh once, to remove the fiber in triturate, the tissue not ground and impurity.Siftage is i.e.
For powder breast, on sieve, bits carry out sieving and washing for the second time, recovery section starch, the starch bits after cleaning give over to after use, use the most again
Whole powder breasts are once filtered by the metallic screen of 80 mesh, to remove more tiny potato slag.All need during screen to add water in order to from
The potato slag ground washes out starch grain.Potato starch serosity after filtration, after 6h staticly settles, tilts to outwell the most gently
Water above starch and scum silica frost, be subsequently adding appropriate clear water and be stirred, and raw material Rhizoma Solani tuber osi is 1:1 with the mass ratio of clear water,
Carrying out the second time precipitation of 8h again, the starch obtained can be relatively white, pure.When the complete cementation of beaker bottom starch and supernatant
After transparent, supernatant can be outwelled, play powder and dry.After starch wash is clean, moisture content is the highest, it is necessary to be dehydrated, and first uses
Buchner funnel sucking filtration obtains moisture content and is about the wet starch of about 40%, then wet starch is put into 60 DEG C of baking ovens, is dried about
30min.I.e. obtain finished product of starch after to be dried, then weigh calculating.Using the program as reference examples.
The starch obtained in embodiment 1~5 is weighed, calculates yield according to below equation.Its quality depends primarily on horse
The content of starch of bell potato, process conditions depend primarily on Rhizoma Solani tuber osi broken after starch ionization rate separate with slurry, starch washing
In loss, other production links starch loss because of amount little easy to control, ignore.
Computing formula is as follows:
In embodiment 1~5 scheme, calculated Rhizoma Solani tuber osi yield the results are shown in Table 1.
The Rhizoma Solani tuber osi yield obtained in table 1 embodiment 1~5 extraction scheme
As can be seen from Table 1, the starch yield of embodiment 1~4 is 10.42%~11.15%, is better than comparative example embodiment
The starch yield 8.27% of 5;It is pure white that interpolation prevent-browning reagent extracts the starch color obtained, and is not added with preventing during extracting
It is black that browning agent extracts the starch obtained, and starch generation oxidizing brown stain during extracting is described.
As seen from the above embodiment, the extracting method of a kind of potato starch that the present invention provides, by breaking Rhizoma Solani tuber osi
Having the participation of prevent-browning reagent and biological assistant time broken, wherein prevent-browning reagent can effectively prevent that Rhizoma Solani tuber osi breakdown products is counter gives birth to
Oxidation, thus ensure that the starch color extracted is pure white, improve the organoleptic quality of gained starch;Cellulase and pectase are made simultaneously
During adding extraction to for biological assistant, by enzymolysis pectin and cellulose thus reduce Rhizoma Solani tuber osi and crush the viscosity of slurry, have
It is beneficial to improve potato starch yield, makes potato starch yield improve 5-10%.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. the extracting method of a potato starch, it is characterised in that comprise the following steps:
1) Rhizoma Solani tuber osi is cleaned;
2) by described step 1) clean after Rhizoma Solani tuber osi mix with water, prevent-browning reagent and biological assistant crush, obtain Rhizoma Solani tuber osi
Serosity;
Described biological assistant includes cellulase and pectase;
3) by described step 2) the Rhizoma Solani tuber osi serosity that obtains sieves, and siftage is dehydrated potato powder breast;
4) by described step 3) after the dehydrated potato powder breast that obtains staticly settles, obtain potato starch.
Extracting method the most according to claim 1, it is characterised in that described step 2) in prevent-browning reagent and biology help
The gross mass of agent accounts for the 0.3~1% of potato water gross mass.
Extracting method the most according to claim 1 and 2, it is characterised in that described step 2) in biological assistant with described
The mass ratio of prevent-browning reagent is 1:1~5.
Extracting method the most according to claim 1, it is characterised in that described step 2) in prevent-browning reagent and Rhizoma Solani tuber osi and
Mix with biological assistant again after water mixing 0~12min.
Extracting method the most according to claim 1, it is characterised in that described step 2) cellulase and the matter of pectase
Amount ratio is 1:1~9.
Extracting method the most according to claim 1, it is characterised in that described step 3) in screening aperture be 50~100
Mesh.
Extracting method the most according to claim 1, it is characterised in that described step 3) in the lower part of screen that obtains of screening divide again
Secondary crush, repeat step 3), the dehydrated potato powder breast that will obtain merges.
Extracting method the most according to claim 1, it is characterised in that described step 4) in precipitation time be 4~10h.
Extracting method the most according to claim 8, it is characterised in that described step 4) in precipitation after also include discarding upper strata
Liquid, the precipitate obtained again with water mixing, washing starch;Described Rhizoma Solani tuber osi with washing starch water mass ratio be 1:1~
10。
Extracting method the most according to claim 9, it is characterised in that described in discard upper liquid after also include Rhizoma Solani tuber osi
Precipitate dehydrate;Described dry temperature is 50~70 DEG C.
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