CN109232751A - A kind of method that high-efficiency water-saving concentrated base wet process prepares converted starch - Google Patents
A kind of method that high-efficiency water-saving concentrated base wet process prepares converted starch Download PDFInfo
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
- C08B31/04—Esters of organic acids, e.g. alkenyl-succinated starch
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
- C08B31/06—Esters of inorganic acids
- C08B31/066—Starch phosphates, e.g. phosphorylated starch
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/08—Ethers
- C08B31/12—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch
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- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/08—Ethers
- C08B31/12—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch
- C08B31/125—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch having a substituent containing at least one nitrogen atom, e.g. cationic starch
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- C08B31/00—Preparation of derivatives of starch
- C08B31/18—Oxidised starch
Abstract
The invention belongs to the technical fields of converted starch, disclose a kind of method that high-efficiency water-saving concentrated base wet process prepares converted starch.Method: starch and water or starch, water and swelling inhibitor are uniformly mixed are made into starch milk first；Then under conditions of high speed homogenization or high-speed stirred (12000~24000rpm), it is slowly added to the sodium hydroxide solution that mass concentration is 5%~50% into starch system, adjusts and keep the pH of reaction system；Modifying agent is added and is uniformly mixed, insulation reaction, obtains reaction product；The pH of reaction product is adjusted to neutrality, subsequent processing obtains converted starch.Method of the invention solves the problems, such as that concentrated base wet process leads to starch gelatinization, efficiently reduces the discharge of waste water, improves reaction efficiency, reduces the dosage and production cost of chemicals.
Description
Technical field
The invention belongs to the technical fields of converted starch, and in particular to a kind of high-efficiency water-saving concentrated base wet process prepares converted starch
Method.
Background technique
The production method of converted starch generally has the methods of wet process, dry method, cylinder drying, and industrial application is most common to be
Wet process technique.Wet chemistry modified starch technique, usually reagent adding are to add in 20%~40% ative starch cream in concentration
The diluted sodium hydroxide solution that mass concentration is 2.5%~3.5% is transferred to alkalinity, activated Starch, and lower than gelatinization at a temperature of
Reaction, is usually no more than 60 DEG C, reaches the extent of reaction of requirement, and starch still keeps graininess, filters, and washes, dry, obtains
Converted starch product.
The critical control point of wet modified starch technique is that starch granules must be kept well, not because of high temperature or high-alkali
And expansion is caused to be gelatinized, it just can be carried out subsequent filtering and cleaning operation in this way, removal ash content guarantees product quality.So with
Toward wet modified starch production process in, only with the diluted sodium hydroxide solution of very low concentrations (2.5%~3.5%), purpose
It seeks to prevent from causing the swelling of starch granules to be gelatinized because of the addition of concentrated base.However, although the use of diluted alkaline effectively prevents
The gelatinization of starch granules, but production efficiency is greatly reduced, produce a large amount of sewage discharge.The denaturation of low concentration diluted alkaline wet process
Starch preparation process has been not suitable with national to clean manufacturing, energy-saving requirement at present.
The type of wet chemistry reaction of degeneration (RD) includes oxidation, acidification, esterification, etherificate, crosslinking etc., is all in alkaline solution
In, since starch is a kind of weak ion-exchanger, the proton of-OH is dissociated to keep starch molecule negatively charged, and electronegative point
It is mutually exclusive between son, lead to starch granules swell, the particle of swelling generates tension to neighbouring starch molecule crystalline solid and turns round
It is bent they, so that starch is reached best solvent swelling state.Therefore starch has high reaction activity under alkaline condition, so, wet process is formed sediment
Powder modified technique is all to be adjusted to be modified reaction under reaction system to alkaline state with sodium hydroxide solution.
Wet process (Aqueous phase) modified technique of the chemical modification of starch, especially starch is at present in the industrial production extensively
General application.But all the time, be all use low concentration diluted alkaline (mass percent concentration for 2.5%~3.5% hydroxide
Sodium solution) carry out starch activation and neutralization.Because starch is very easy to cause to be gelatinized because of the addition of concentrated base in water phase,
And it cannot achieve normal preparation and industrialized production.The activation and neutralization that starch is carried out using concentrated base, are always converted starch work
The technical bottleneck and key technical problems that industry does not break through and realizes.
Technique production at present and the production of conventional wet converted starch use diluted alkaline, and mass fraction is generally 2.5%~
3.5%.For example, Luo Faxing et al. (learn by the property of sodium hypochlorite mild oxidation starch and mechanism of crosslinking [J] South China Science & Engineering University
Report (natural science edition), 2006 (08): 79-83.) sodium hypochlorite mild oxidation has been prepared and researched with 3% sodium hydroxide solution
The property of starch；Sun Chen et al. (wet process prepares technical study [J] grain processing of high viscosity modified corn starch, and 2014,39
(01): 51-53. reaction system pH) is adjusted with 3% sodium hydroxide solution, wet process is prepared for high viscosity modified corn starch.However
In the actual production process, concentration of lye is improved, the amount of conserving water is not only contributed to, reduces quantity of wastewater effluent, more responsive to
The environmental protection policy of country, can also improve reactor tank utilization efficiency, and for reacting violent chemical reaction, pH reduces cracking body
System, can also realize and quickly supplement a large amount of liquid alkaline in a short time, keep the pH value with equilibrium system, improve production capacity.
Summary of the invention
In order to overcome the disadvantages of the above prior art and insufficient, solution diluted alkaline Modified Starch Production water consumption is big, arranges
The problem more than sewage is put, the object of the present invention is to provide a kind of methods that high-efficiency water-saving concentrated base wet process prepares converted starch.
The purpose of the present invention is achieved through the following technical solutions:
A kind of method that high-efficiency water-saving concentrated base wet process prepares converted starch, includes the following steps:
(1) starch is uniformly mixed with water, or starch, water is uniformly mixed with swelling inhibitor, obtain starch milk；
(2) under conditions of high speed homogenization or high-speed stirred, it is 5%~50% that mass concentration is slowly added into starch milk
Sodium hydroxide solution (preferred mass concentration 11%~50%) adjust and keep the pH of reaction system；Modifying agent is added and mixes
Uniformly, insulation reaction obtains reaction product；High speed homogenization or the revolving speed of high-speed stirred are 12000~24000rpm；
(3) pH of reaction product is adjusted to neutrality, and subsequent processing obtains converted starch.
Starch described in step (1) include cornstarch, tapioca, potato starch, wheaten starch, starch from sweet potato,
Green starch, sago starch, wax (glutinous) one or more of cornstarch and canna starch.
Swelling inhibitor described in step (1) is sodium sulphate, sodium chloride or sodium carbonate, when obtained converted starch is crosslinking
When starch, esterification starch, hydroxypropul starch or cationic starch, swelling inhibitor need to be added by preparing starch milk；
PH described in step (2) is 8~11；
Modifying agent described in step (2) be sodium trimetaphosphate, phosphorus oxychloride, sodium hypochlorite, hydrogen peroxide, acetic anhydride, oneself
Dicarboxylic anhydride, vinyl acetate, hydrochloric acid, sulfuric acid, orthophosphoric acid, sodium orthophosphate (sodium dihydrogen phosphate and disodium hydrogen phosphate), potassium orthophosphate
(potassium dihydrogen phosphate and dipotassium hydrogen phosphate), sodium tripolyphosphate, octenyl succinic acid anhydride, propylene oxide, the chloro- 2- hydroxypropyl trimethylammonium of 3-
More than one in ammonium chloride.
The temperature of insulation reaction described in step (2) is 20~60 DEG C, time of the insulation reaction is 1~for 24 hours；
Adjusting pH described in step (3) refers to using hydrochloric acid, sulphur acid for adjusting pH to neutrality to neutrality；The subsequent processing is
Refer to filtering, washing, dry, crushing, sieving.
The diluted alkaline (mass percent concentration is 2.5%~3.5%) that method of the invention is different from generalling use at present is wet
The process of method (Aqueous phase) converted starch preparation, the present invention realize quickly dividing for concentrated base using high speed homogenization or high-speed stirred
It dissipates, solves the problems, such as the key technology difficulty that conventional concentrated base wet processing leads to starch granules swell and gelatinization.Side of the invention
It is 5%~50% (preferred mass concentration 11%~50%) that method, which directlys adopt concentrated base mass percent concentration, improves reactor tank
Utilization efficiency and production capacity 5%~20% reduce discharged volume of industrial waste water 10%~30%, while can also improve reaction effect
Rate reduces the dosage of chemicals in converted starch preparation process and reduces production cost.This method can be widely applied to wet process
In the production process of (Aqueous phase) food and the various converted starches of industry.
The present invention, which breaches concentrated base, leads to the technical bottleneck of starch gelatinization, directlys adopt concentrated base and carries out the alkalization of starch in
With thus substantially increase production efficiency and ability, hence it is evident that reduce displacement, improve reaction efficiency, reduce and be produced into
This.Sodium trimetaphosphate or Tapioca Starch Cross-linked With Phosphorus Oxychloride, sodium hypochlorite or hydrogen peroxide oxidation starch, vinegar are prepared more particularly to concentrated base
The method of acid esters starch, acid degradation starch, phosphate ester starch, hydroxypropul starch and quaternary ammonium type cationic starch, to reach high
It imitates, is water-saving, improving the purpose of production capacity.
Compared with prior art, the invention has the following advantages and beneficial effects:
Method of the invention solves the problems, such as that concentrated base wet processing leads to starch gelatinization, reduces the discharge of waste water, mentions
High reaction efficiency, reduces the dosage of chemicals in converted starch preparation process and reduces production cost, have very important
Science and realistic meaning.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but embodiments of the present invention are not limited to
This.The mass ratio of starch and water is 40:100 in embodiment 1~16, when swelling inhibitor is added, the additional amount of swelling inhibitor
It is the 1%~15% of starch quality；The dosage of the modifying agent is the 0.01%~65% of starch quality.
Embodiment 1
(1) cornstarch, water, sodium carbonate are uniformly mixed, obtain starch milk；The dosage of sodium carbonate accounts for starch on dry basis quality
3%, the quality of cornstarch butt and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 12000rpm) it, is slowly added into starch system
11% sodium hydroxide solution of mass concentration, adjusts and keeps the pH11 of reaction system；
(3) in the starch milk for adjusting pH value, the sodium trimetaphosphate for accounting for starch on dry basis quality 0.8% is added and mixes equal
It is even, obtain starch reaction system；
(4) 45 DEG C of insulation reaction 2h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, and carries out subsequent processing, and the final sodium trimetaphosphate that obtains is handed over
Join starch.
Relative to traditional diluted alkaline wet process, concentrated base wet process is used in the present embodiment, reactor tank utilization rate improves 5.3%, uses
Discharge reduction 9.0%；Crosslinked starch manufactured in the present embodiment and ungelatinized simultaneously.
Embodiment 2
(1) tapioca, water, sodium chloride are uniformly mixed, obtain starch milk；Sodium chloride accounts for the 1% of starch on dry basis quality,
The quality of starch on dry basis and water is 40:100；
(2) under conditions of high-shear homogenizer or high-speed stirred (revolving speed 13000rpm), slowly add into starch system
Enter 50% sodium hydroxide solution of mass concentration, adjusting and keeping reaction system pH is 11；
(3) in the starch milk for adjusting pH value, the phosphorus oxychloride for accounting for starch on dry basis quality 0.02% is added and mixes equal
It is even, obtain starch reaction system；
Insulation reaction 2h at (4) 32 DEG C completes the chemical modification of starch, obtains reaction product；
(5) pH for adjusting reaction product after reaction is neutrality, and carries out subsequent processing, and the final phosphorus oxychloride that obtains is handed over
Join starch.
By polarized light microscope observing, there are still confirm ungelatinized to the modified starch Birefringence phenomenon of the present embodiment.
Embodiment 3
(1) potato starch and water are uniformly mixed and are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 15000rpm) matter, is slowly added into starch milk
20% sodium hydroxide solution of concentration is measured, adjusts and keeps reaction system pH9；
(3) liquor natrii hypochloritis for accounting for starch on dry basis quality 6% is added in the starch milk for adjusting pH value and mixes equal
It is even, obtain starch reaction system；
(4) 35 DEG C of insulation reaction 2h complete the chemical modification of starch, obtain reaction product；
(5) adjusting pH after reaction is neutrality, is post-processed to reaction product, and the final hypochlorite oxidation that obtains is formed sediment
Powder.
The change starch of the present embodiment is by polarized light microscope observing, and there are still confirm ungelatinized to starch Birefringence phenomenon.
Relative to traditional diluted alkaline wet process, concentrated base wet process is used in the present embodiment, reactor tank utilization rate improves 6.9%, and water consumption is reduced
12.8%.
Embodiment 4
(1) wheaten starch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under the conditions of high speed homogenization or high-speed stirred (revolving speed 12000rpm), quality is slowly added into starch milk
30% sodium hydroxide solution of concentration, adjusting and keeping reaction system pH is 10；
(3) hydrogen peroxide that addition accounts for starch on dry basis quality 1.5% in the starch milk for adjusting pH value is uniformly mixed；It obtains
Obtain starch reaction system；
(4) 50 DEG C of insulation reaction 2h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, post-processes to reaction mixture, obtains hydrogen peroxide
Oxidized starch.
By polarized light microscope observing starch Birefringence phenomenon, there are still do not paste modified starch manufactured in the present embodiment
Change.
Embodiment 5
(1) starch from sweet potato and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 14500rpm) matter, is slowly added into starch milk
40% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) acetic anhydride that addition accounts for starch on dry basis quality 6% in the starch milk for adjusting pH is uniformly mixed；Obtain starch
Reaction system；
(4) 28 DEG C of insulation reaction 1.5h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, post-processes to reaction mixture, obtains acetic anhydride ester
Change starch.
Relative to traditional diluted alkaline wet process, concentrated base wet process is used in the present embodiment, reactor tank utilization rate improves 22.4%, uses
Discharge reduction 33.9%；Converted starch manufactured in the present embodiment passes through polarized light microscope observing starch Birefringence phenomenon still simultaneously
In the presence of, and ungelatinized.
Embodiment 6
(1) green starch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 17000rpm) matter, is slowly added into starch milk
15% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) it is added in the starch milk for adjusting pH value and accounts for the adipic anhydride of starch on dry basis quality 8% and be uniformly mixed；It obtains
Obtain starch reaction system；
(4) 20 DEG C of insulation reaction 1.5h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, post-processes to reaction mixture, obtains adipic anhydride
Esterification starch.
By polarized light microscope observing starch Birefringence phenomenon, there are still do not paste converted starch manufactured in the present embodiment
Change.
Embodiment 7
(1) sago starch, sodium carbonate and water are uniformly mixed, are modulated into starch milk；Sodium carbonate accounts for starch on dry basis quality
6%, the quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 12000rpm) matter, is slowly added into starch milk
5% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) vinyl acetate that addition accounts for starch on dry basis quality 10% in the starch milk for adjusting pH value is uniformly mixed,
Obtain starch reaction system；
(4) 38 DEG C of insulation reaction 1h complete the chemical modification of starch, obtain reaction product；
(5) after reaction, adjusting reaction product pH is neutrality, is post-processed to reaction mixture, and acetic acid second is obtained
Alkene esterification starch.
By polarized light microscope observing starch Birefringence phenomenon, there are still illustrate simultaneously converted starch manufactured in the present embodiment
Ungelatinized.
Embodiment 8
(1) canna starch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under the conditions of high speed homogenization or high-speed stirred (revolving speed 18000rpm), matter is slowly added into starch system
35% sodium hydroxide solution of concentration is measured, adjusts and keeps reaction system pH8；
(3) in the starch milk for adjusting pH value be added account for starch on dry basis quality 5% mixed in hydrochloric acid it is uniform, obtain starch
Reaction system；
(4) 37 DEG C of insulation reaction 4h complete the chemical modification of starch, obtain reaction product；
(5) after reaction, adjusting reaction product pH is neutrality, is post-processed to reaction mixture, and hydrochloric acid drop is obtained
Solve starch.
Converted starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 9
(1) wax (glutinous) cornstarch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is
40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 19000rpm), matter is slowly added into starch milk
45% sodium hydroxide solution of concentration is measured, adjusts and keeps reaction system pH8；
(3) sulfuric acid that addition accounts for starch on dry basis quality 5% in the starch milk for adjusting pH value is uniformly mixed, and obtains starch
Reaction system；
(4) 45 DEG C of insulation reaction 3h complete the chemical modification of starch, obtain reaction product；
(5) reaction product pH is adjusted after reaction to neutrality, and carries out subsequent processing, obtains sulfuric acid degrading amyloid
Product.
Converted starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 10
(1) cornstarch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 24000rpm), matter is slowly added into starch milk
50% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) orthophosphoric acid that addition accounts for starch on dry basis quality 10% in the starch milk for adjusting pH value is uniformly mixed, and is obtained
Starch reaction system；
(4) 40 DEG C of insulation reaction 4h complete the chemical modification of starch, obtain reaction product；
(5) after reaction, reaction product pH is adjusted to neutrality, is post-processed, obtains orthophosphoric acid degradable starch sample.
Converted starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 11
(1) potato starch and water are uniformly mixed and are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 24000rpm) matter, is slowly added in starch milk
50% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) it is added in the starch milk for adjusting pH value and accounts for 15% sodium dihydrogen phosphate of starch on dry basis and 50% disodium hydrogen phosphate
It is uniformly mixed, obtains starch reaction system；
(4) 40 DEG C of stirrings keep the temperature 1h, complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, is post-processed, final to obtain sodium orthophosphate esterification starch
Sample.
Modified starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 12
(1) wheaten starch and water dispersion is uniform, it is modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 21000rpm) matter, is slowly added into starch milk
11% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 9；
(3) it is added in the above-mentioned starch milk for adjusting pH value and accounts for 10% potassium dihydrogen phosphate of starch on dry basis quality and 40% phosphorus
Sour hydrogen dipotassium is uniformly mixed, and obtains starch reaction system；
(4) 42 DEG C of insulation reaction 1h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, is post-processed, and final acquisition potassium orthophosphate esterification is formed sediment
Powder.
Modified starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 13
(1) starch from sweet potato and water are uniformly mixed and are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 24000rpm) matter, is slowly added in starch milk
20% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 8；
(3) in the starch milk for adjusting pH value be added account for 0.6% sodium tripolyphosphate of starch on dry basis quality be uniformly mixed, obtain
Obtain starch reaction system；
(4) 45 DEG C of insulation reaction 1h complete the chemical modification of starch, obtain reaction product；
(5) after reaction, adjusting reaction product pH is neutrality, is post-processed, final to obtain sodium tripolyphosphate esterification
Starch.
Modified starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 14
(1) green starch and water are uniformly mixed, are modulated into starch milk；The quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 12000rpm) matter, is slowly added into starch milk
25% sodium hydroxide solution of concentration is measured, adjust and is kept so that reaction system pH is 9；
(3) dropwise addition accounts for the octenyl succinic acid anhydride mixing of starch on dry basis quality 10% in the starch milk for adjusting pH value
It is even, obtain starch reaction system；
(4) 60 DEG C of insulation reaction 2h complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, is post-processed, is finally obtained octenyl succinated
Starch.
Modified starch manufactured in the present embodiment simultaneously (still deposited by polarized light microscope observing starch Birefringence phenomenon by ungelatinized
).
Embodiment 15
(1) sago starch, water and sodium sulphate are uniformly mixed and are modulated into starch milk；Sodium sulphate accounts for starch on dry basis quality
10%, the quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 23000rpm) matter, is slowly added into starch milk
25% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 11；
(3) propylene oxide that addition accounts for starch on dry basis quality 20% into the starch milk for adjust pH value is uniformly mixed, and is obtained
Obtain starch reaction system；
(4) 40 DEG C of insulation reactions for 24 hours, complete the chemical modification of starch, obtain reaction product；
(5) adjusting reaction product pH after reaction is neutrality, is post-processed, obtains hydroxypropul starch.
Relative to traditional diluted alkaline wet process, concentrated base wet process is used in the present embodiment, reactor tank utilization rate improves 15.4%, uses
Discharge reduction 20.7%；Simultaneously ungelatinized (passes through polarized light microscope observing starch polarisation to modified starch manufactured in the present embodiment simultaneously
Cross phenomenon there are still).
Embodiment 16
(1) canna starch, water and sodium chloride are uniformly mixed, are modulated into starch milk；Sodium chloride accounts for starch on dry basis quality
15%, the quality of starch on dry basis and water is 40:100；
(2) under conditions of high speed homogenization or high-speed stirred (revolving speed 20000rpm) matter, is slowly added into starch milk
11% sodium hydroxide solution of concentration is measured, adjusting and keeping reaction system pH is 11；
(3) the chloro- 2- Hydroxyproyl Trimethyl chlorine of 3- for accounting for starch on dry basis quality 7% is added in the starch milk for adjusting pH value
Change ammonium to be uniformly mixed；Obtain starch reaction system；
(4) 48 DEG C of insulation reaction 16h complete the chemical modification of starch, obtain reaction product；
(5) after reaction, adjusting reaction product pH is neutrality, post-processes to reaction product, finally obtains quaternary amine
Type cationic starch.
Relative to traditional diluted alkaline wet process, concentrated base wet process is used in the present embodiment, reactor tank utilization rate improves 19.6%, uses
Discharge reduction 28.6%；Modified starch manufactured in the present embodiment and ungelatinized simultaneously.
The present invention uses revolving speed for the high speed homogenization of 12000~24000rpm or the mode of high-speed stirred, solves concentrated base
The problem of wet process leads to starch gelatinization when preparing converted starch reduces the discharge of waste water, improves reaction efficiency.
Claims (7)
1. a kind of method that high-efficiency water-saving concentrated base wet process prepares converted starch, characterized by the following steps:
(1) starch is uniformly mixed with water, or starch, water is uniformly mixed with swelling inhibitor, obtain starch milk；
(2) under conditions of high speed homogenization or high-speed stirred, the hydrogen that mass concentration is 5%~50% is slowly added into starch milk
Sodium hydroxide solution adjusts and keeps the pH of reaction system；Modifying agent is added and is uniformly mixed, insulation reaction, obtains reaction product；
High speed homogenization or the revolving speed of high-speed stirred are 12000~24000rpm；
(3) pH of reaction product is adjusted to neutrality, and subsequent processing obtains converted starch.
2. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (2)
Described in sodium hydroxide mass concentration be 11%~50%；
PH described in step (2) is 8~11；
Modifying agent described in step (2) is sodium trimetaphosphate, phosphorus oxychloride, sodium hypochlorite, hydrogen peroxide, acetic anhydride, adipic acid
Acid anhydride, vinyl acetate, hydrochloric acid, sulfuric acid, orthophosphoric acid, sodium dihydrogen phosphate and disodium hydrogen phosphate, potassium dihydrogen phosphate and dipotassium hydrogen phosphate,
Sodium tripolyphosphate, octenyl succinic acid anhydride, propylene oxide, more than one in 3- chloro-2-hydroxypropyl-trimethyl ammonium chloride.
3. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (2)
Described in the temperature of insulation reaction be 20~60 DEG C, time of the insulation reaction is 1~for 24 hours.
4. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (1)
Described in swelling inhibitor be sodium sulphate, sodium chloride or sodium carbonate, when obtained converted starch be crosslinked starch, esterification starch,
When hydroxypropul starch or cationic starch, swelling inhibitor need to be added by preparing starch milk.
5. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (3)
Described in adjusting pH refer to using hydrochloric acid, sulphur acid for adjusting pH to neutrality to neutrality.
6. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (3)
Described in subsequent processing refer to filtering, washing, drying, crushing, sieving.
7. the method that high-efficiency water-saving concentrated base wet process prepares converted starch according to claim 1, it is characterised in that: step (1)
Described in starch include cornstarch, tapioca, potato starch, wheaten starch, starch from sweet potato, green starch, sago form sediment
One or more of powder, waxy corn starch and canna starch.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110483650A (en) * | 2019-08-23 | 2019-11-22 | 甘肃丰收农业科技有限公司 | One triple composite modified starch of type egg white solution and preparation method thereof |
| CN111196860A (en) * | 2020-04-02 | 2020-05-26 | 河南恒瑞淀粉科技股份有限公司 | Double-etherification cross-linking modified starch for water shutoff profile control agent, preparation method thereof and water shutoff profile control agent |
| CN113024897A (en) * | 2021-03-10 | 2021-06-25 | 杭州纸友科技有限公司 | Preparation method of high-strength TPS starch for degradable material |
| CN113582764A (en) * | 2021-08-23 | 2021-11-02 | 安徽省司尔特肥业股份有限公司 | Production method and application of continuously activated humic acid compound fertilizer |
| CN114317635A (en) * | 2021-12-30 | 2022-04-12 | 保龄宝生物股份有限公司 | Method for preparing low-density digestion-resistant starch |
| CN114591446A (en) * | 2021-12-31 | 2022-06-07 | 杭州纸友科技有限公司 | Preparation method and application of modified starch polysaccharide derivative |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624424A (en) * | 2009-08-03 | 2010-01-13 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Method for preparing carboxymethyl modified starch |
| CN102086233A (en) * | 2010-12-24 | 2011-06-08 | 陈明兴 | Manioc modified starch and production method thereof |
| WO2014147173A1 (en) * | 2013-03-20 | 2014-09-25 | Fresenius Kabi Deutschland Gmbh | Hydroxyalkyl starch derivatives as reactants for coupling to thiol groups |
| CN105884912A (en) * | 2014-11-14 | 2016-08-24 | 天津工业大学 | Method for preparing cross-linked acetate starch by adopting wet process |
-
2018
- 2018-08-29 CN CN201810996890.4A patent/CN109232751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624424A (en) * | 2009-08-03 | 2010-01-13 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Method for preparing carboxymethyl modified starch |
| CN102086233A (en) * | 2010-12-24 | 2011-06-08 | 陈明兴 | Manioc modified starch and production method thereof |
| WO2014147173A1 (en) * | 2013-03-20 | 2014-09-25 | Fresenius Kabi Deutschland Gmbh | Hydroxyalkyl starch derivatives as reactants for coupling to thiol groups |
| CN105884912A (en) * | 2014-11-14 | 2016-08-24 | 天津工业大学 | Method for preparing cross-linked acetate starch by adopting wet process |
Non-Patent Citations (6)
| Title |
|---|
| KYUNGSOOWOO等: "《Cross-linking of wheat starch and hydroxypropylated wheat starch in alkaline slurry with sodium trimetaphosphate》", 《CARBOHYDRATE POLYMERS》 * |
| 余欢: "《羟丁基交联玉米淀粉的制备_性质及应用研究》", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 周家华等: "《食品添加剂》", 31 January 2001, 化学工业出版社 * |
| 扶熊 等: "《食用变性淀粉》", 31 March 2016, 中国轻工业出版社 * |
| 王婵: "《淀粉疏水改性基团分布及其构效关系》", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 陈开勋主编: "《新领域精细化工》", 31 March 1999, 中国石化出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110483650A (en) * | 2019-08-23 | 2019-11-22 | 甘肃丰收农业科技有限公司 | One triple composite modified starch of type egg white solution and preparation method thereof |
| CN111196860A (en) * | 2020-04-02 | 2020-05-26 | 河南恒瑞淀粉科技股份有限公司 | Double-etherification cross-linking modified starch for water shutoff profile control agent, preparation method thereof and water shutoff profile control agent |
| CN113024897A (en) * | 2021-03-10 | 2021-06-25 | 杭州纸友科技有限公司 | Preparation method of high-strength TPS starch for degradable material |
| CN113582764A (en) * | 2021-08-23 | 2021-11-02 | 安徽省司尔特肥业股份有限公司 | Production method and application of continuously activated humic acid compound fertilizer |
| CN114317635A (en) * | 2021-12-30 | 2022-04-12 | 保龄宝生物股份有限公司 | Method for preparing low-density digestion-resistant starch |
| CN114591446A (en) * | 2021-12-31 | 2022-06-07 | 杭州纸友科技有限公司 | Preparation method and application of modified starch polysaccharide derivative |
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