CN103254449A - Acetate starch preparation method - Google Patents
Acetate starch preparation method Download PDFInfo
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- CN103254449A CN103254449A CN2012105698307A CN201210569830A CN103254449A CN 103254449 A CN103254449 A CN 103254449A CN 2012105698307 A CN2012105698307 A CN 2012105698307A CN 201210569830 A CN201210569830 A CN 201210569830A CN 103254449 A CN103254449 A CN 103254449A
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Abstract
The present invention belongs to the field of compound preparation, and provides an acetate starch preparation method, which comprises: adding distilled water to starch to blend to obtain a slurry, wherein the pH value of the slurry is adjusted to 9-9.5; adding acetic anhydride, and concurrently adding a 3% sodium hydroxide solution, wherein the amount of the acetic anhydride is 5% of the mass of the starch, and the pH value of the slurry is maintained to 7.5-8.8; adopting dilute hydrochloric acid to adjust the pH value of the slurry to 5-7, and placing into a swirling flow washing system to remove incompletely-reacted chemicals, salts produced from the reaction and impurities carried by starch and chemicals; and carrying out centrifugation dewatering on the obtained slurry so as to achieve a water content of 35-40%, drying to achieve a water content of less than 14%, and carrying out screening and packaging. With the method, water resources are saved, pollution treatment cost is saved, and acetate starch stability is increased.
Description
Technical field
The present invention is applicable to the compound field, specifically relates to a kind of preparation method of acetate starch.
Background technology
Native starch is introduced some chemical based and is changed because making molecular structure and physico-chemical property through suitable chemical treatment, generates starch derivative.Starch is a kind of polysaccharose substance.Unmodified starch structure has two kinds usually: amylose starch and amylopectin are the polysaccharose substances of polymerization.Usually because of poorly water-soluble, so adopt treated starch, i.e. water soluble starch often.Zulkovsky starch is to handle a class modified starch derivative that obtains through different methods, is insoluble to cold water, ethanol and ether, is dissolved in or is scattered in the boiling water, forms colloidal solution or emulsion liquid.
All add starch or edible gum as thickening material, jelling agent, binding agent or stablizer etc. in numerous food product, along with the continuous development of Food science technology, food processing technology has very big change, and is more and more higher to the requirement of starch property.For example: adopt heat sterilization, fierce mechanical stirring, acidic food, particularly be under the heating condition or cryogenic freezing etc., starch viscosity is reduced and colloidality destroyed.Native starch can not adapt to these processing condition, though and various vegetable jelly to have preferable performance expensive, what have goes back dependence on import.For the requirement of the converted products that satisfies some Special foods, can be met the starchbased product that various special purposes need by type or the method for modifying of selecting starch.These goods can replace expensive raw material, reduce the cost of food mfg, increase economic efficiency.
Acetate starch is ideal food additives.The acetate starch of low degree of substitution contains acetyl 0.5%～2.5%, is used as thickening material in food-processing, and its advantage is the viscosity height, the clarity height, and a little less than the retrogradation, stable storing.Often it is carried out complex denaturation, the cross-linking starch acetic ester has more high viscosity stability for high temperature, strong shearing force and low pH influence, and low-temperature storage and freeze-thaw stability are also high, are suitable for the can based food and use, and can store under differing temps.The hydroxypropylated starch acetic ester, the hydroxypropyl substitution value is about 3～6, and degree of substitution with acetyl group is about 0.5～0.9, and is water insoluble for the good matrix of chewing gum, the chewing good springiness.
Acetic anhydride starch belongs to non-reacted tackiness agent, is a kind of key pluronic polymer in many food processing process, and the quality of its viscosity thermal stability directly has influence on efficient and the quality of food processing and production.For reaching the range of viscosities that the food-processing slurry uses, usually ative starch is carried out oxidation pre-treatment, then carry out the esterification sex change and prepare acetic ester starch slurry, yet, the acetate starch of preparing by such method, the defective that has the viscosity stability difference makes slurry viscosity fluctuate easily, is unfavorable for carrying out smoothly of food processing and production.
Summary of the invention
In order to overcome above-mentioned technical deficiency, the invention provides a kind of preparation method of acetate starch, the inventive method can improve the viscosity stability of acetic ester starch slurry, namely the acetate starch through the dual sex change of peroxidation-esterification is carried out crosslinked sex change again, by between the acetate starch molecule, building bridge, overcome the shortcoming of acetic ester starch slurry viscosity poor stability.
Technical solution of the present invention is as follows:
With starch adding distil water furnishing slurries, and the pH value of described slurries is adjusted to 9-9.5;
Add the acetic anhydride that accounts for starch quality 5%, add 3% sodium hydroxide solution simultaneously, the pH value that keeps described slurries is 7.5-8.8;
With dilute hydrochloric acid the pH value of described slurries is adjusted to 5-7, and puts into the eddy flow washing system, remove the impurity that salinity that unreacted chemical, reaction completely produce and starch and chemical bring;
With described slurries centrifuge dehydration, making its water content is 35-40%, makes water content less than 14% by drying, and sieves and pack.
The method of the embodiment of the invention has been saved water resources and has been administered the cost that pollutes required input, has improved the stability of acetate starch.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
A kind of preparation method of acetate starch mainly comprises the steps:
With starch adding distil water furnishing slurries, and the pH value of slurries is adjusted to 9-9.5;
In an embodiment of the present invention, be 35-40% with the concentration of slurry of starch adding distil water furnishing, the sodium hydroxide solution with 3% is regulated the pH value of slurries.
Add the acetic anhydride that accounts for starch quality 5%, add 3% sodium hydroxide solution simultaneously, keeping the pH value of slurries is 7.5-8.8;
In an embodiment of the present invention, the interpolation time that adds the acetic anhydride that accounts for starch quality 5% is 1.5 to 3.5 hours, keeps the reaction vessel temperature to be lower than 32 ℃ simultaneously.
With dilute hydrochloric acid the pH value of slurries is adjusted to 5-7, and puts into the eddy flow washing system, remove the impurity that salinity that unreacted chemical, reaction completely produce and starch and chemical bring;
With the slurries centrifuge dehydration, making its water content is 35-40%, makes water content less than 14% by drying, and sieves and pack.
In an embodiment of the present invention, the dry hot blast that obtains by the Boiler Steam heating is realized.
As a preferred embodiment of the present invention, sieve by 100 mesh sieve, be packaged into 25 kilograms of every bags then.
Be described further below in conjunction with the invention of embodiment.
The water furnishing concentration of getting the tapioca (flour) of 66kg and 100kg is about 40% slurry, with 3% sodium hydroxide solution the slurries pH value is adjusted to 9 then, and adjusting temperature to 30 ℃ adds the hypochlorite solutions of 5.6kg, stirs 20 minutes;
Slurries are cooled to 20-30 ℃, the acetic anhydride of 4.6kg, and the joining day is 1-2 hour, adds 3% sodium hydroxide solution simultaneously, keeps pH value 7.5-8.5;
Acetic anhydride adds the back termination reaction, and adjusting slurry pH value 9-9.5 adds the 1.3kg Trisodium trimetaphosphate, at room temperature reacts 3-5 hour;
Regulate pH value 6 with dilute hydrochloric acid, slurries are put in the eddy flow washing system, remove the impurity that salinity that unreacted chemical and reaction completely produce and starch and chemical bring;
The most of moisture in the slurries is removed in centrifuge dehydration, filtration, obtains water content and is about 30% filter cake; The pneumatic drier of putting into 70 ℃ after the filter cake pulverizing is dried, sieve through 100 mesh sieve then, at last packing.Finished product is white subparticle.
The method of the embodiment of the invention has been saved water resources and has been administered the cost that pollutes required input, has improved the stability of acetate starch.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the preparation method of an acetate starch is characterized in that, said method comprising the steps of:
With starch adding distil water furnishing slurries, and the pH value of described slurries is adjusted to 9-9.5;
Add the acetic anhydride that accounts for starch quality 5%, add 3% sodium hydroxide solution simultaneously, the pH value that keeps described slurries is 7.5-8.8;
With dilute hydrochloric acid the pH value of described slurries is adjusted to 5-7, and puts into the eddy flow washing system, remove the impurity that salinity that unreacted chemical, reaction completely produce and starch and chemical bring;
With described slurries centrifuge dehydration, making its water content is 35-40%, makes water content less than 14% by drying, and sieves and pack.
2. the method for claim 1 is characterized in that, described concentration of slurry with starch adding distil water furnishing is 35-40%, regulates the pH value of described slurries with 3% sodium hydroxide solution.
3. the method for claim 1 is characterized in that, the interpolation time that described adding accounts for the acetic anhydride of starch quality 5% is 1.5 to 3.5 hours, keeps the reaction vessel temperature to be lower than 32 ℃ simultaneously.
4. the method for claim 1 is characterized in that, described drying realizes by the hot blast that the Boiler Steam heating obtains.
5. the method for claim 1 is characterized in that, described screening selects for use 100 mesh sieve to carry out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105698307A CN103254449A (en) | 2012-12-25 | 2012-12-25 | Acetate starch preparation method |
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| CN2012105698307A CN103254449A (en) | 2012-12-25 | 2012-12-25 | Acetate starch preparation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739724A (en) * | 2014-01-14 | 2014-04-23 | 山东渠风食品科技有限公司 | Method for producing acetate starch by using starch A obtained after extracting wheat gluten from wheat flour |
| CN104774272A (en) * | 2015-04-13 | 2015-07-15 | 江南大学 | Method for preparing low-substitution degree acetate starch slurry |
| CN106674361A (en) * | 2016-12-16 | 2017-05-17 | 天峨县全盛蜂业科技有限公司 | Preparation method for compound modified starch |
| CN108285497A (en) * | 2017-12-26 | 2018-07-17 | 吉林中粮生化有限公司 | A kind of preparation method of acetate starch |
| CN108948218A (en) * | 2018-06-19 | 2018-12-07 | 钦州学院 | A kind of method that limited solvent method prepares acetate starch |
| CN110194805A (en) * | 2019-06-28 | 2019-09-03 | 河北科技大学 | A kind of acetate starch and preparation method thereof |
| CN112111017A (en) * | 2020-09-03 | 2020-12-22 | 绿色轻化科技发展(北京)有限公司 | Degradable cassava acetate starch, resin thereof, preparation method and application of degradable cassava acetate starch and resin |
Citations (4)
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| US5710269A (en) * | 1996-01-16 | 1998-01-20 | Hoechst Celanese Corp. | Method of making starch acetate using an acid catalyst |
| CN1597699A (en) * | 2004-08-06 | 2005-03-23 | 王美岭 | Production method of sodium carboxy methy starch |
| CN1903884A (en) * | 2005-07-28 | 2007-01-31 | 四平帝达变性淀粉有限公司 | Predextrinization acetate starch and its preparation method |
| CN101033259A (en) * | 2006-03-10 | 2007-09-12 | 四平帝达变性淀粉有限公司 | Process of preparing pregelatinization acetyl oxidation starch |
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2012
- 2012-12-25 CN CN2012105698307A patent/CN103254449A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710269A (en) * | 1996-01-16 | 1998-01-20 | Hoechst Celanese Corp. | Method of making starch acetate using an acid catalyst |
| CN1597699A (en) * | 2004-08-06 | 2005-03-23 | 王美岭 | Production method of sodium carboxy methy starch |
| CN1903884A (en) * | 2005-07-28 | 2007-01-31 | 四平帝达变性淀粉有限公司 | Predextrinization acetate starch and its preparation method |
| CN101033259A (en) * | 2006-03-10 | 2007-09-12 | 四平帝达变性淀粉有限公司 | Process of preparing pregelatinization acetyl oxidation starch |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739724A (en) * | 2014-01-14 | 2014-04-23 | 山东渠风食品科技有限公司 | Method for producing acetate starch by using starch A obtained after extracting wheat gluten from wheat flour |
| CN103739724B (en) * | 2014-01-14 | 2016-08-17 | 山东渠风食品科技有限公司 | Semen Tritici aestivi flour extracts the method for the A Starch Production acetate starch after gluten meal |
| CN104774272A (en) * | 2015-04-13 | 2015-07-15 | 江南大学 | Method for preparing low-substitution degree acetate starch slurry |
| CN104774272B (en) * | 2015-04-13 | 2016-02-03 | 江南大学 | A kind of method preparing low degree of substitution acetic ester starch slurry |
| CN106674361A (en) * | 2016-12-16 | 2017-05-17 | 天峨县全盛蜂业科技有限公司 | Preparation method for compound modified starch |
| CN108285497A (en) * | 2017-12-26 | 2018-07-17 | 吉林中粮生化有限公司 | A kind of preparation method of acetate starch |
| CN108948218A (en) * | 2018-06-19 | 2018-12-07 | 钦州学院 | A kind of method that limited solvent method prepares acetate starch |
| CN108948218B (en) * | 2018-06-19 | 2020-08-04 | 钦州学院 | Method for preparing acetate starch by limited solvent method |
| CN110194805A (en) * | 2019-06-28 | 2019-09-03 | 河北科技大学 | A kind of acetate starch and preparation method thereof |
| CN110194805B (en) * | 2019-06-28 | 2021-06-22 | 河北科技大学 | Acetate starch and preparation method thereof |
| CN112111017A (en) * | 2020-09-03 | 2020-12-22 | 绿色轻化科技发展(北京)有限公司 | Degradable cassava acetate starch, resin thereof, preparation method and application of degradable cassava acetate starch and resin |
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Application publication date: 20130821 |