CN1807462A - Cool water soluble starch preparation method - Google Patents
Cool water soluble starch preparation method Download PDFInfo
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- CN1807462A CN1807462A CN 200510119063 CN200510119063A CN1807462A CN 1807462 A CN1807462 A CN 1807462A CN 200510119063 CN200510119063 CN 200510119063 CN 200510119063 A CN200510119063 A CN 200510119063A CN 1807462 A CN1807462 A CN 1807462A
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Abstract
The invention provides a Method for preparation of cold water soluble starch. Using starch as base-material and strong base/carbamide/water blending of definite proportions as solvent, preparing high solubility and transparent strong starch solution in the condition of strong mixing in low temperature or room temperature, then neutralize depositing by alcohol acid solution, scouring by ethanol solution, getting cold water soluble starch by desiccation. The components of mixed solvent are 4-20% strong base, 6-25% urea, the rest is water. The modified starch has great cold water-solubility, the cold water dissolved rate is as high as 100%, its fine capability can be used broadly in food industry, at the same time it can be used in the disposal of alkaline water as well as drug slow release capsule.
Description
Technical field:
The present invention relates to a kind of cool water soluble starch preparation method.
Technical background:
Starch is the storage form of carbohydrate in green plants, is a kind of important reproducible and biodegradable natural resource, in foodstuffs industry and other various practical applications in extremely important, usage quantity is big.Starch source enriches cheap, is that the ative starch product that raw material was generated has obtained using widely in many industry with cereal and tuber crops.Along with industrial expansion, it is specific functional more and more to require starch product to have, as better film-forming properties, thickening property, freeze-thaw stability, gelation, to thermostability, anti-shearing, resistance to acids and bases, cold water-soluble etc.Starch molecule has a lot of hydroxyls, and wetting ability is very strong, but starch granules is water insoluble, and this is because pass through the cause of very strong hydrogen bonded between hydroxyl.Cool water soluble starch has been avoided the boiling operation in use, can directly be dissolved in cold water and form paste.Alphalysed starch is that pre-gelatinized starch is exactly wherein a kind of, because of it has excellent characteristic, as coldwater-soluble, stick with paste that liquid is transparent, good thickening etc., be widely used in food, feed, oil, casting industry.The common preparation method of alphalysed starch has cylinder drying, screw rod extrusion process and spray-drying process.Cool water soluble starch is the novel modified starch of abroad developing in recent years, compare with the pre-gelatinized starch of cold water solubles, cool water soluble starch is because of having good particulate state, and glossiness is good, advantages such as good visco-elasticity and applied range, and obtain welcoming and development.The technology of producing cool water soluble starch has double flowing nozzle spray-drying process, high pressure alcohol method and normal pressure polyvalent alcohol method.As U.S. Pat 5037929, the essential characteristic of this patent is, be made into emulsion by the insoluble starch of cold water, water and polyvalent alcohol, the ratio of starch and water 1: 0.6 to 1: 3, the ratio of starch and polyvalent alcohol is 1: 2 to 1: 10, this emulsion is heated to 80 to 130C ° and kept 3 to 30 minutes, isolates cool water soluble starch from liquid phase, the coldwater-soluble of product is 92%.Alcohol-alkaline process is most up-to-date techniques of developing cool water soluble starch in recent years, be reflected under the normal pressure 30-40 ℃ and carry out, but the cold water solubility of product is 95%, as Chinese patent CN1226560A.
Summary of the invention:
In order to solve high temperature in the preparation cool water soluble starch technology, high pressure, to influence product quality and can not be applied to high shortcoming of propping up starch, the invention provides a kind of cool water soluble starch novel preparation method as the undesirable meeting of conducting heat.Should method is simple, under atmospheric pressure at room or the cold condition, with highly basic/urea/high transparent starch strong solution of water mixed solvent dissolving starch preparation, neutralizing with alkyd then, this solution sedimentation, alcohol are washed, drying obtains cool water soluble starch.
The preparation process and the condition of a kind of cool water soluble starch preparation method provided by the invention are as follows:
Under whipped state, technical grade starch is joined in the mixed solvent of highly basic/urea/water configuration, the proportioning of mixed solvent is the highly basic of 4-20wt%, the urea of 6-25wt%, all the other are water, the solubleness of starch in mixed solvent is 10-25%, stir down at-10～25 ℃ then, optimum temps is-10 ℃, obtain transparent starch strong solution, add alkyd and neutralize this starch strong solution, pour the starch strong solution in ethanol sedimentation then to neutral, obtain treated starch, the solid product of treated starch is used washing with alcohol repeatedly, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.
The measuring method of cold water solubility:
Under 25 ℃ of the room temperatures, 100ml water stirs with electric mixer in jar, slowly adds cool water soluble starch 1 gram of above-mentioned modification, and (weighing precision is: 0.001 gram) sample can not conglomeration in water.After the high-speed stirring 10 minutes, this solution is with maximum speed of revolution 3000rpm whizzer centrifugation 15 minutes, dry in 80 ℃ of baking ovens in the evaporating pan of weighing with the 25ml upper solution, in 110 ℃ of dryings 4 hours, weigh after the cooling again.Cold water solubility is calculated by following formula:
Cold water solubility=(heavy * 4/ sample of solid is heavy in the 25ml solution) * 100%
The invention provides a kind of cool water soluble starch novel preparation method.Should method is simple, under atmospheric pressure at room or the cold condition, with highly basic/urea/high transparent starch strong solution of water mixed solvent dissolving starch preparation, neutralizing with alkyd then, this solution sedimentation, alcohol are washed, drying obtains cool water soluble starch.Treated starch dissolution rate in cold water of this method preparation reaches as high as 100%.Its good performance can be widely used in foodstuffs industry, can be used for the processing and the medicine slow releasing capsule of alkaline sewage simultaneously.
Embodiment:
Further specify the present invention below by embodiment, but the present invention is not limited to this.
Embodiment 1:
After 4% sodium hydroxide and 10% urea mixed by weight ratio, add sodium hydroxid/urea/water mixed solution that water is made into 100 grams, place-10 ℃ cryosel to bathe cooling, slowly adding 10 gram W-Gums under the agitation condition fast, obtain transparent starch strong solution then.The ethanolic soln that adds acetic acid is neutralized to neutrality, and the treated starch sedimentation is separated out, and washes the treated starch solid with ethanol again, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.Press the cold water solubility measuring method, the cold water solubility that records product is 97.6%.
Embodiment 2:
After 10% sodium hydroxide and 6% urea mixed by weight proportion, add sodium hydroxid/urea/water mixed solution that water is made into 100 grams, place-5 ℃ cryosel to bathe cooling, slowly adding 10 gram W-Gums under the agitation condition fast, obtain transparent starch strong solution then.The ethanolic soln that adds acetic acid is neutralized to neutrality, and the treated starch sedimentation is separated out, and washes the treated starch solid with ethanol again, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.Press the cold water solubility measuring method, the cold water solubility that records product is 98.2%.
Embodiment 3:
After 8% sodium hydroxide and 15% urea mixed by weight proportion, add sodium hydroxid/urea/water mixed solution that water is made into 100 grams, place-10 ℃ cryosel to bathe cooling, slowly adding 10 gram W-Gums under the agitation condition fast, obtain transparent starch strong solution then.The ethanolic soln that adds acetic acid is neutralized to neutrality, and the treated starch sedimentation is separated out, and washes the treated starch solid with ethanol again, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.Press the cold water solubility measuring method, the cold water solubility that records product is 100%.
Embodiment 4:
After 10.5% sodium hydroxide and 25% urea mixed by weight proportion, add sodium hydroxid/urea/water mixed solution that water is made into 100 grams, place-10 ℃ cryosel to bathe cooling, slowly adding 25 gram W-Gums under the agitation condition fast, obtain transparent starch strong solution then.The ethanolic soln that adds acetic acid is neutralized to neutrality, and the treated starch sedimentation is separated out, and washes the treated starch solid with ethanol again, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.Press the cold water solubility measuring method, the cold water solubility that records product is 100%.
Embodiment 5:
After 20% sodium hydroxide and 12% urea mixed by weight proportion, add sodium hydroxid/urea/water mixed solutions that water is made into 100 grams, place 25 ℃ of room temperatures, slowly adding 18 gram W-Gums under the agitation condition fast, obtain transparent starch strong solution then.The ethanolic soln that adds acetic acid is neutralized to neutrality, and the treated starch sedimentation is separated out, and washes the treated starch solid with ethanol again, filters with B, and 40 ℃ of vacuum-dryings obtained cool water soluble starch after 48 hours.Press the cold water solubility measuring method, the cold water solubility that records product is 96.3%.
Embodiment 6:
Different with embodiment 1 or 2 or 3 or 4 or 5 is that highly basic sodium hydroxide can be replaced with potassium hydroxide or lithium hydroxide.The cold water solubility of its product is respectively: 98.7%, 97.6%, 99.8%, 100%, 96.1%.
Embodiment 7:
Different with embodiment 1 or 2 or 3 or 4 or 5 is that W-Gum can be replaced with tapioca (flour).
Claims (12)
1. the preparation method of a cool water soluble starch, it is characterized in that with starch being base-material, under agitation condition, it is joined in the solvent of highly basic/urea/water miscellany, the transparent starch strong solution of preparation high-dissolvability under low temperature or room temperature strong mixing condition, use in the acetate ethanol solution then and sedimentation, with the ethanolic soln washing, drying obtains cool water soluble starch again; The highly basic that consists of 4-20wt% of the solvent of described highly basic/urea/water miscellany, the urea of 6-25wt%, all the other are water; The solubleness of starch in mixed solvent is 10-25%; Described low temperature or room temperature are-10～25 ℃.
2. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that, the solvent of described highly basic/urea/water miscellany consist of 4wt% sodium hydroxide, 10wt% urea, all the other are water; Described low temperature is-10 ℃.
3. the preparation method of cool water soluble starch as claimed in claim 1, it is characterized in that described highly basic/urea/water miscellany solvent consist of 10wt% sodium hydroxide, 6wt% urea, all the other are water; Described low temperature is-5 ℃.
4. the preparation method of cool water soluble starch as claimed in claim 1, it is characterized in that described highly basic/urea/water miscellany solvent consist of 8wt% sodium hydroxide and 15wt% urea, all the other are water; Described low temperature is-10 ℃.
5. the preparation method of cool water soluble starch as claimed in claim 1, it is characterized in that described highly basic/urea/water miscellany solvent consist of 10.5wt% sodium hydroxide and 25wt% urea, all the other are water; Described low temperature is-10 ℃.
6. the preparation method of cool water soluble starch as claimed in claim 1, it is characterized in that described highly basic/urea/water miscellany solvent consist of 20wt% sodium hydroxide and 12wt% urea; Described room temperature is 25 ℃.
7. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that, the highly basic of the solvent of described highly basic/urea/water miscellany is sodium hydroxide.
8. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that the highly basic of the solvent of described highly basic/urea/water miscellany is potassium hydroxide.
9. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that the highly basic of the solvent of described highly basic/urea/water miscellany is lithium hydroxide.
10. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that described starch is W-Gum.
11. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that described starch is tapioca (flour).
12. the preparation method of cool water soluble starch as claimed in claim 1 is characterized in that described starch is yam starch.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510119063XA CN100455602C (en) | 2005-12-08 | 2005-12-08 | Cool water soluble starch preparation method |
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| CNB200510119063XA CN100455602C (en) | 2005-12-08 | 2005-12-08 | Cool water soluble starch preparation method |
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| CN1807462A true CN1807462A (en) | 2006-07-26 |
| CN100455602C CN100455602C (en) | 2009-01-28 |
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| CNB200510119063XA Expired - Fee Related CN100455602C (en) | 2005-12-08 | 2005-12-08 | Cool water soluble starch preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824165A (en) * | 2010-05-04 | 2010-09-08 | 西南大学 | Granular cold water soluble porous starch |
| CN102675476A (en) * | 2012-05-20 | 2012-09-19 | 湖州展望药业有限公司 | Production method for soluble starch |
| CN106892987A (en) * | 2015-12-21 | 2017-06-27 | 上海东升新材料有限公司 | A kind of method of dry process starch dissolvable in cold water |
| CN108794764A (en) * | 2018-07-03 | 2018-11-13 | 四川大学 | A kind of controllable regeneration cold water soluble corn starch preparation method of size |
| CN113563845A (en) * | 2021-08-18 | 2021-10-29 | 山西和合众新材料科技有限公司 | Green environment-friendly degradable dust-fixing agent and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073450A (en) * | 1992-10-07 | 1993-06-23 | 王珍 | The production method of soluble amphoteric starch and purposes |
| CN1063473C (en) * | 1996-08-28 | 2001-03-21 | 陈卧龙 | Method for quick preparing colorless corn gum by cold water |
| DE69911018T3 (en) * | 1998-06-10 | 2007-07-05 | Coöperatie Avebe U.A. | DEXTRINIZATION OF STARCH |
| DE19859123C1 (en) * | 1998-12-21 | 2000-03-16 | Eisu Innovative Ges Fuer Techn | Starch phosphates useful e.g. as superabsorber, viscosity regulator or water softener or in adhesive or detergent have specified degree of substitution by phosphate ester and carbamide groups |
| CN1076729C (en) * | 1998-12-29 | 2001-12-26 | 国内贸易部谷物油脂化学研究所 | Granular starch dissolvable in cold water and preparation thereof |
| CN100408598C (en) * | 2004-04-23 | 2008-08-06 | 郝庆阳 | Composite modified starch and its preparing method |
-
2005
- 2005-12-08 CN CNB200510119063XA patent/CN100455602C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824165A (en) * | 2010-05-04 | 2010-09-08 | 西南大学 | Granular cold water soluble porous starch |
| CN102675476A (en) * | 2012-05-20 | 2012-09-19 | 湖州展望药业有限公司 | Production method for soluble starch |
| CN106892987A (en) * | 2015-12-21 | 2017-06-27 | 上海东升新材料有限公司 | A kind of method of dry process starch dissolvable in cold water |
| CN108794764A (en) * | 2018-07-03 | 2018-11-13 | 四川大学 | A kind of controllable regeneration cold water soluble corn starch preparation method of size |
| CN113563845A (en) * | 2021-08-18 | 2021-10-29 | 山西和合众新材料科技有限公司 | Green environment-friendly degradable dust-fixing agent and preparation method thereof |
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| Publication number | Publication date |
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| CN100455602C (en) | 2009-01-28 |
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Owner name: CHANGZHOU INSTITUTE OF ENERGY STORAGE MATERIALS + Free format text: FORMER OWNER: CHANGCHUN INST. OF APPLIED CHEMISTRY, CHINESE ACADEMY OF SCIENCES Effective date: 20140929 |
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Free format text: CORRECT: ADDRESS; FROM: 130022 CHANGCHUN, JILIN PROVINCE TO: 213000 CHANGZHOU, JIANGSU PROVINCE |
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Effective date of registration: 20140929 Address after: Changzhou City, Jiangsu province Hehai road 213000 No. 9 Patentee after: Changzhou Institute of Energy Storage Materials & Devices Address before: 130022 Changchun people's street, Jilin, No. 5625 Patentee before: Changchun Institue of Applied Chemistry, Chinese Academy of Sciences |
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