CN104211821B - A kind of method that air-flow premixing prepares rice starch phosphate monoester - Google Patents

A kind of method that air-flow premixing prepares rice starch phosphate monoester Download PDF

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CN104211821B
CN104211821B CN201410458610.6A CN201410458610A CN104211821B CN 104211821 B CN104211821 B CN 104211821B CN 201410458610 A CN201410458610 A CN 201410458610A CN 104211821 B CN104211821 B CN 104211821B
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rice starch
parts
starch
phosphate monoester
rice
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CN104211821A (en
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于秋生
徐文婷
冯伟
刘忠义
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Wuxi qiuke Biotechnology Co.,Ltd.
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WUXI SHANYUAN BIOLOGICAL SCIENCE & TECHNOLOGY Co Ltd
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Abstract

The present invention relates to a kind of method that use air-flow premixing prepares rice starch phosphate monoester, belong to starch field of deep.With rice starch as raw material, orthophosphates is esterifying agent to the present invention, and product is prepared with urea as catalyst, is mainly comprised the following steps:The mixed liquor of orthophosphates and urea and water is adjusted to appropriate pH and is sufficiently mixed by air-flow conveying blender with rice starch, being re-fed into vulcanization bed reactor carries out hot esterification, and end product obtains rice starch phosphate monoester by washing, drying.The inventive method process is simple, low cost, are suitable to industrialization large-scale production, and obtained rice starch phosphate paste liquid is transparent, anti-aging, have good retentiveness, can be used for field of food as emulsifying agent, stabilizer, thickener.

Description

A kind of method that air-flow premixing prepares rice starch phosphate monoester
Technical field
The present invention relates to a kind of method that air-flow premixing prepares rice starch phosphate monoester, belong to starch deep processing neck Domain.
Technical background
In rice, wheat and the generalized grain crop of corn 3, the content of starch in rice tops the list, and content is up to more than 70%. But because cost of material and domestic consumption level etc. store up multifactor restriction, the existing rank of domestic starch industry material is disconnected with corn and Ma Ling Based on potato, rice starch only accounts for 13%, but due to the peculiar property of rice starch granule fine uniform, rice starch and its derivative Special potential value, is just gradually paid close attention to by people.
China's rice has its advantageous superiority, at home and abroad market share consequence, with living standard Raising, people to rice mouthfeel requirement more and more higher.Due to traditional husk rice technology, and pernicious beating in process is followed Ring can produce 10%~15% to crack rice, and these crack rice and typically used as feed, but the protein in cracking rice, starch etc. are sought Support material close with rice, and price only has the 30%~50% of rice, if insufficient rice can be caused to provide original if Very big waste, therefore research and development product of cracking rice just seems more and more urgent.Due in rice up to 70% content of starch, Cracking rice can be used as the raw material of production converted starch.
Starch phosphate monoester is the derivative of starch anion, because its gelatinized corn starch has good dispersed transparent degree, viscous Degree and good freeze-thaw stability, phosphate ester starch are widely used to the industries such as food, chemical industry and medicine.It is with cornstarch The research that raw material prepares starch phosphate monoester is more, but with rice starch as raw material, prepares starch phosphate monoester, does not see Systematic account.Therefore, research carries out deep processing making full use of for rice resource by raw material of rice starch, has very Important meaning.
Current starch phosphate mainly using based on cornstarch and farina, method include wet method, semidry method and Dry method is several.Wet method esterification degree is than relatively low, it is necessary to substantial amounts of water and organic solvent, subsequent product complex disposal process;Semidry method Increased with the shortcoming that dry method overcomes wet method, and esterification degree, but, phosphoric acid, phosphate, urea and a small amount of water and starch Mixing it is uneven, and there are more starch phosphate diester even because of the excessive concentration of local phosphoric acid and phosphate etc. The products such as three esters, have partial starch not to be esterified when causing reaction, there is ative starch and starch phosphate two more than comparing in product The ester even product such as three esters, both reduces esterification degree, and product quality is had a strong impact on again.
The content of the invention
Present invention seek to address that the starch resource caused in rice process wastes problem.Therefore, the present invention proposes one Kind can overcome traditional starch phosphate production method defect, be suitable to industrial-scale production, can to prepare paste liquid saturating Bright, anti-aging, stability and the good rice starch phosphate monoester of retentiveness, for rice starch deep processing provides a new way Footpath.
To achieve the above object, the present invention provides following technical scheme:
A kind of method that air-flow premixing prepares rice starch phosphate monoester, with rice starch as raw material, including following step Suddenly:
(1) a certain amount of sodium dihydrogen phosphate, disodium hydrogen phosphate and water are mixed, adds a certain amount of urea, be made mixed liquor;
(2) in 180 parts of rice starch hot-airs being delivered into fluidization tower, and with setting up at the top of fluidization tower In fluidization tower be sufficiently mixed uniformly mixed liquor atomisation obtained in step (1) with starch by sprayer;
(3) fluidized-bed reactor is directly entered from the mixture of fluidization tower starch out and orthophosphates mixed solution to enter Row reaction;
(4) after reaction terminates, reactant is washed, is dried, obtain rice starch phosphate monoester.
In the step (1), by 30~40 parts of sodium dihydrogen phosphates, 80~100 parts of disodium hydrogen phosphates and 80~100 parts of water, And 8~10 parts of urea are added, it is made mixed liquor.
By mixed liquor and pH to 5~6 is adjusted, be heated to 30~50 DEG C.
During 180 parts of rice starch are delivered into fluidization tower by the step (2) with 50 DEG C of hot-airs.
Step (3) reaction condition is 130~160 DEG C of 2~4h of heating response.
The step (4) is dried to be vacuum dried 24h at pneumatic conveying drying or 50 DEG C.
The step (4) obtains the rice starch phosphate monoester that substitution value is 0.01~0.025.
A kind of rice starch phosphate monoester, is prepared from using method of the present invention, substitution value be 0.01~ 0.025。
Beneficial effects of the present invention:The present invention prepares rice starch with rice starch as raw material using air-flow premixed method Phosphate.The method can belong to semidry method, both overcome wet method esterification degree than relatively low, it is necessary to substantial amounts of water and organic molten Agent, the shortcoming of subsequent product complex disposal process overcomes original semidry method and dry method phosphoric acid, phosphate, urea and few again The mixing of amount water and starch is uneven, has partial starch not to be esterified during reaction, there is the ative starch more than comparing and shallow lake in product The powder di-phosphate ester even shortcomings such as product such as three esters, products obtained therefrom esterification degree is higher, esterification is uniform, do not have ester in product The starch and starch phosphate diester of the change even product such as three esters are few, product quality stabilization.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Specific embodiment
A kind of method that air-flow premixing prepares rice starch phosphate monoester, with rice starch as raw material, including following step Suddenly:
(1) by 30~40 parts of sodium dihydrogen phosphates, 80~100 parts of disodium hydrogen phosphates and 80~100 parts of water, and 8~10 are added Part urea, is made mixed liquor, and adjusts pH to 5~6, is heated to 30~50 DEG C;
(2) in 180 parts of rice starch being delivered into fluidization tower with 50 DEG C of hot-air, and used at the top of fluidization tower In fluidization tower be sufficiently mixed the orthophosphates mixed solution atomisation of foregoing heating with starch by the sprayer set up It is even;
(3) mixture from fluidization tower starch out and orthophosphates mixed solution is directly entered a fluidized-bed reaction Device, in 130~160 DEG C of 2~4h of heating response;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.01~0.025 rice starch phosphate monoester.
The assay method of rice starch phosphate monoester substitution value:
(1) vanadium molybdenum Huang AAS
0.3g sodium carbonate is dissolved into 2ml distilled water, and 0.5g rice starch phosphates are added to it, by it 100 After fully being dried in the environment of DEG C, 9h is ashed at 550 DEG C.Mixture after ashing is cooled to room temperature, is added to it The hydrochloric acid of 10ml25%, solution is poured into the beaker containing 50ml distilled water, and be transferred to for filtrate by filtering and collecting filter liquid In the volumetric flask of 250ml and constant volume, sample test liquid is obtained.10ml sample test liquid is taken, 2ml vanadium ammonium molybdate solution is added, shaken , after placing 45min, at 435nm wavelength, its absorbance is surveyed, phosphorus content is read from standard curve, standard curve is with two grades Standard substance potassium dihydrogen phosphate makes.
(2) P-Mo blue AAS
0.5g rice starch phosphates are taken, is put into triumphant formula flask, add 15ml sulfonitric reagents, be gradually heated to Micro-boiling in bottle, continues to boil to Brown gas and becomes white, untill liquid is clarified.After digestive juice is cooled to room temperature, add 45ml water, pH is brought up into 7 with the sodium hydroxide solution of 10mol/L, then solution in bottle is quantitatively moved into one has suitably In the volumetric flask of capacity and constant volume, appropriate amount of sample liquid is drawn in 50ml conical flasks, adding 4ml ammonium molybdate solutions in order, then 2ml ascorbic acid solutions are added, is mixed at once after addition and conical flask is placed in 10min in boiling water bath, place into cooling in cold water To room temperature, quantitatively move into 50ml volumetric flasks, add water to scale.With spectrophotometer in 820nm wavelength mensuration absorbances, from mark Phosphorus content is read on directrix curve.
Because the P-Mo blue colour developing of, P-Mo blue AAS generation is unstable, change over time larger, and influenceed by pH It is larger, it is not easy to operate.And under certain acidity, phosphorus and metavanadate and molybdic acid salt action in solution are formed sufficiently stable Yellow ternary heteropoly acid vanadium molybdic acid phosphoric acid, therefore using vanadium molybdenum Huang spectrophotometry substitution value.
With reference to embodiment, the present invention is further detailed explanation, but the present invention is not limited thereto.
Embodiment 1
(1) by 35 parts of sodium dihydrogen phosphates, 96 parts of disodium hydrogen phosphates and 90 parts of water, and 8 parts of urea are added, are made mixed liquor, And pH to 5.5 is adjusted, it is heated to 50 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 150 DEG C of heating response 2.5h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.018 rice starch phosphate monoester.
Embodiment 2
(1) by 30 parts of sodium dihydrogen phosphates, 100 parts of disodium hydrogen phosphates and 90 parts of water, and 9 parts of urea are added, are made mixed liquor, And pH to 6 is adjusted, it is heated to 45 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 130 DEG C of heating response 4h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.021 rice starch phosphate monoester.
Embodiment 3
(1) by 40 parts of sodium dihydrogen phosphates, 85 parts of disodium hydrogen phosphates and 100 parts of water, and 10 parts of urea are added, is made mixing Liquid, and pH to 5 is adjusted, it is heated to 30 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 140 DEG C of heating response 3h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.015 rice starch phosphate monoester.
Embodiment 4
(1) by 40 parts of sodium dihydrogen phosphates, 92 parts of disodium hydrogen phosphates and 90 parts of water, and 9 parts of urea are added, are made mixed liquor, And pH to 6 is adjusted, it is heated to 40 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 160 DEG C of heating response 3h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.022 rice starch phosphate monoester.
Embodiment 5
(1) by 40 parts of sodium dihydrogen phosphates, 80 parts of disodium hydrogen phosphates and 80 parts of water, and 8 parts of urea are added, are made mixed liquor, And pH to 6 is adjusted, it is heated to 40 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 160 DEG C of heating response 4h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.019 rice starch phosphate monoester.
Embodiment 6
(1) by 35 parts of sodium dihydrogen phosphates, 80 parts of disodium hydrogen phosphates and 100 parts of water, and 9 parts of urea are added, are made mixed liquor, And pH to 5 is adjusted, it is heated to 40 DEG C;
(2) in 180 parts of rice starch being delivered into pneumatic conveyer with 50 DEG C of hot-air, and in pneumatic conveyer The orthophosphates mixed solution atomisation of foregoing heating is filled in pneumatic conveyer with starch with sprayer at front end 1/3 Divide mixing;
(3) mixture from pneumatic conveyer starch out and orthophosphates mixed solution is directly entered a fluid bed Reactor, in 150 DEG C of heating response 2h;
(4) after reaction terminates, reactant is washed, then by being vacuum dried 24h at pneumatic conveying drying or 50 DEG C, is obtained Substitution value is 0.013 rice starch phosphate monoester.
It is only above better embodiment of the invention, above-mentioned design of the invention, those skilled in the art Can also to this various modification can be adapted and conversion.For example, ratio between sodium dihydrogen phosphate, disodium hydrogen phosphate, urea and water and The temperature and pH value of mixed liquor, the ratio of sodium dihydrogen phosphate, disodium hydrogen phosphate, urea, water and starch, reaction time temperature and when Between, etc.;However, similar this conversion and modification belongs to essence of the invention.

Claims (1)

1. a kind of method that air-flow premixing prepares rice starch phosphate monoester, it is characterised in that with rice starch as raw material, bag Include following steps:
(1) by 30~40 parts of sodium dihydrogen phosphates, 80~100 parts of disodium hydrogen phosphates and 80~100 parts of water, and 8~10 parts of urine are added Element, is made mixed liquor;Mixed liquor is adjusted into pH to 5~6,30~50 DEG C are heated to;
(2) in 180 parts of rice starch being delivered into fluidization tower with 50 DEG C of hot-airs, and with setting up at the top of fluidization tower In fluidization tower be sufficiently mixed uniformly mixed liquor atomisation obtained in step (1) with starch by sprayer;
(3) being directly entered fluidized-bed reactor from the mixture of fluidization tower starch out and orthophosphates mixed solution is carried out instead Should;Reaction condition is 130~160 DEG C of 2~4h of heating response;
(4) after reaction terminates, reactant is washed, is dried, obtain rice starch phosphate monoester;The drying be pneumatic conveying drying or 24h is vacuum dried at 50 DEG C of person;Obtain the rice starch phosphate monoester that substitution value is 0.01~0.025.
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Publication number Priority date Publication date Assignee Title
GB815358A (en) * 1956-06-26 1959-06-24 Scholten Chemische Fab A process for the manufacture of derivatives of polysaccharides, more particularly of starch, by a dry process
CN1337409A (en) * 2000-08-07 2002-02-27 国家淀粉及化学投资控股公司 Improved starch phosphate-ester composition, process and method used for food
CN101544702A (en) * 2009-05-06 2009-09-30 中南林业科技大学 Preparation method of phosphate rice starch
CN101962414A (en) * 2010-10-13 2011-02-02 广西明阳生化科技股份有限公司 Method for producing aquatic granulated feed adhesive modified starch
CN103897068A (en) * 2014-04-02 2014-07-02 枣庄超越玉米淀粉有限公司 Efficient energy-saving production method of modified starch

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US3284443A (en) * 1963-04-17 1966-11-08 American Maize Prod Co Starch-phosphate reaction products and method of making same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815358A (en) * 1956-06-26 1959-06-24 Scholten Chemische Fab A process for the manufacture of derivatives of polysaccharides, more particularly of starch, by a dry process
CN1337409A (en) * 2000-08-07 2002-02-27 国家淀粉及化学投资控股公司 Improved starch phosphate-ester composition, process and method used for food
CN101544702A (en) * 2009-05-06 2009-09-30 中南林业科技大学 Preparation method of phosphate rice starch
CN101962414A (en) * 2010-10-13 2011-02-02 广西明阳生化科技股份有限公司 Method for producing aquatic granulated feed adhesive modified starch
CN103897068A (en) * 2014-04-02 2014-07-02 枣庄超越玉米淀粉有限公司 Efficient energy-saving production method of modified starch

Non-Patent Citations (1)

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Title
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