CN103819697A - Preparation method of corn modified starch - Google Patents
Preparation method of corn modified starch Download PDFInfo
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- CN103819697A CN103819697A CN201410071466.0A CN201410071466A CN103819697A CN 103819697 A CN103819697 A CN 103819697A CN 201410071466 A CN201410071466 A CN 201410071466A CN 103819697 A CN103819697 A CN 103819697A
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Abstract
The invention discloses a preparation method of corn modified starch, comprising the following steps: adding water into corn starch to prepare an emulsion with the concentration of 30-40%, adjusting pH of the emulsion to 9-11, adding sodium trimetaphosphate which accounts for 1-5% of the weight of the corn starch, heating to 35-45 DEG C and maintaining for 1-3 h, reducing the temperature to 20-30 DEG C, adding acetic anhydride which accounts for 0.1-1% of the weight of the corn starch and simultaneously adjusting pH to 8-9 and maintaining for 30-60 min, adjusting pH of the emulsion to 6-6.5, washing, filtering and drying to obtain the corn modified starch. According to the invention, the corn starch is used as a raw material, sodium trimetaphosphate is used as a cross-linking agent, and acetic anhydride is used as an acetylating agent. The prepared corn modified starch can be dissolved in cold water, and the starch paste is not easy to age and dehydrate, has good stability to heat, acid and refrigeration changes, has good anticoagulant performance and film-forming property, and is convenient to use. And retrogradation degree is reduced.
Description
Technical field
The present invention relates to technical field of modified starch, be specifically related to a kind of preparation method of modified corn starch.
Background technology
W-Gum is applied to a lot of industries, more than 90% starch in the world is all W-Gum at present, although W-Gum has the incomparable advantage of many other kind of kind of starch due to its be insoluble to cold water, the easy aging dehydration of starch paste, tunicle poor, lack the weak points such as emulsifying power, resistance to mechanicalness be poor, limited its range of application.And modified starch changes the character of native starch by the means of physics, chemistry or enzyme, can improve the performance of W-Gum, improve its stability to heat, acid, freezing variation, make it have stronger using value.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of modified corn starch, to make the modified corn starch of excellent property
The present invention will be by the following technical solutions:
The preparation method of modified corn starch, that first W-Gum water to be configured to concentration be 30%～40% emulsion, then by the pH regulator to 9 of emulsion～11, add the Trisodium trimetaphosphate of W-Gum weight 1%～5%, be heated to 35～45 ℃ and keep 1～3h, after being reduced to 20～30 ℃, temperature adds W-Gum weight 0.1%～1% acetic anhydride, regulate pH to 8～9 simultaneously and keep 30～60min, again by the pH regulator to 6 of emulsion～6.5, washing, filter, dry, obtain modified corn starch.
Can also be through the step of pre-gelatinization processing after described being dried, adding water and being configured to concentration is 30%～40% emulsion, then with carrying out pre-gelatinization on single drum drier, pre-gelatinization point is 150～170 ℃, pressure is 6.5～7.5Mpa, rotating speed is 12～16 turn/min, residence time of material 3～5 seconds.
Above-mentioned W-Gum is take waxy corn starch as optimal selection.
Beneficial effect of the present invention is:
The present invention, take W-Gum as raw material, take Trisodium trimetaphosphate as linking agent, take acetic anhydride as acetylizing agent, makes crosslinked acetate starch, and also available single drum drier carries out pre-gelatinization processing to this starch, makes crosslinked acetic ester pre-gelatinized starch; The modified corn starch of gained dissolves in cold water, and starch paste is difficult for aging dehydration, and to the good stability of heat, acid, freezing variation, anti-freezing becomes second nature and good film-forming property, and the degree of bringing back to life reduces, easy to use.
Embodiment
Be further described with specific embodiment below, but the present invention is not limited to these embodiment.
Embodiment 1
The preparation of modified corn starch, be that first the W-Gum water of Glutinous Semen Maydis to be configured to concentration be 30% emulsion, then by the pH regulator to 10 of emulsion, add the Trisodium trimetaphosphate of W-Gum weight 5%, be heated to 35 ℃ and keep 2h, after temperature is reduced to 30 ℃, add W-Gum weight 0.1% acetic anhydride, regulate pH to 8.5 simultaneously and keep 60min, then by the pH regulator to 6 of emulsion, washing, filter, dry, obtain modified corn starch.
Embodiment 2
The preparation of modified corn starch, that first the W-Gum water of Glutinous Semen Maydis to be configured to concentration be 35% emulsion, then by the pH regulator to 11 of emulsion, add the Trisodium trimetaphosphate of W-Gum weight 1%, be heated to 40 ℃ and keep 3h, after being reduced to 20 ℃, temperature adds W-Gum weight 0.5% acetic anhydride, regulate pH to 9 simultaneously and keep 30min, again by the pH regulator to 6 of emulsion, washing, filter, dry, adding water and being configured to concentration is 40% emulsion, then with carrying out pre-gelatinization on single drum drier, pre-gelatinization point is 150 ℃, pressure is 7Mpa, rotating speed is 16 turn/min, residence time of material 3 seconds, obtain modified corn starch.
Embodiment 3
The preparation of modified corn starch, that first the W-Gum water of Glutinous Semen Maydis to be configured to concentration be 40% emulsion, then by the pH regulator to 9 of emulsion, add the Trisodium trimetaphosphate of W-Gum weight 3%, be heated to 45 ℃ and keep 1h, after being reduced to 25 ℃, temperature adds W-Gum weight 1% acetic anhydride, regulate pH to 8.5 simultaneously and keep 60min, again by the pH regulator to 6 of emulsion, washing, filter, dry, adding water and being configured to concentration is 35% emulsion, then with carrying out pre-gelatinization on single drum drier, pre-gelatinization point is 170 ℃, pressure is 6.5Mpa, rotating speed is 15 turn/min, residence time of material 5 seconds, obtain modified corn starch.
Claims (3)
1. the preparation method of a modified corn starch, it is characterized in that: it is 30%～40% emulsion that W-Gum water is configured to concentration, then by the pH regulator to 9 of emulsion～11, add the Trisodium trimetaphosphate of W-Gum weight 1%～5%, be heated to 35～45 ℃ and keep 1～3h, after being reduced to 20～30 ℃, temperature adds W-Gum weight 0.1%～1% acetic anhydride, regulate pH to 8～9 simultaneously and keep 30～60min, again by the pH regulator to 6 of emulsion～6.5, washing, filter, dry, obtain modified corn starch.
2. preparation method according to claim 1, it is characterized in that: after described being dried, also pass through pre-gelatinization processing, adding water and being configured to concentration is 30%～40% emulsion, then with carrying out pre-gelatinization on single drum drier, pre-gelatinization point is 150～170 ℃, pressure is 6.5～7.5Mpa, and rotating speed is 12～16 turn/min, residence time of material 3～5 seconds.
3. preparation method according to claim 1 and 2, is characterized in that: described W-Gum is waxy corn starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410071466.0A CN103819697A (en) | 2014-02-28 | 2014-02-28 | Preparation method of corn modified starch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410071466.0A CN103819697A (en) | 2014-02-28 | 2014-02-28 | Preparation method of corn modified starch |
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| CN103819697A true CN103819697A (en) | 2014-05-28 |
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| CN201410071466.0A Pending CN103819697A (en) | 2014-02-28 | 2014-02-28 | Preparation method of corn modified starch |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105001346A (en) * | 2015-08-26 | 2015-10-28 | 广西梧州市明阳生化科技有限公司 | Production method for esterified modified starch |
| CN106256836A (en) * | 2016-06-06 | 2016-12-28 | 杭州嘉力丰投资股份有限公司 | A kind of environment-friendly type starch base wallpaper glue modified starch and preparation method thereof |
| CN107467114A (en) * | 2017-07-25 | 2017-12-15 | 合肥台香食品有限公司 | A kind of bran bread quality modifying agent |
| CN108084284A (en) * | 2018-01-10 | 2018-05-29 | 南通通地生物技术有限公司 | A kind of production method of composite modified starch |
| CN108329396A (en) * | 2017-12-26 | 2018-07-27 | 吉林中粮生化有限公司 | A kind of preparation method of Ultra Tex 2 converted starch |
| US10143224B2 (en) | 2015-07-24 | 2018-12-04 | Corn Products Development, Inc. | Low protein yogurts containing modified starches |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214588A (en) * | 2013-05-03 | 2013-07-24 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Preparation method of crosslinked-acetylated-succinate ternary composite modified starch |
-
2014
- 2014-02-28 CN CN201410071466.0A patent/CN103819697A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214588A (en) * | 2013-05-03 | 2013-07-24 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Preparation method of crosslinked-acetylated-succinate ternary composite modified starch |
| CN103333263A (en) * | 2013-05-03 | 2013-10-02 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Preparation method of crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10143224B2 (en) | 2015-07-24 | 2018-12-04 | Corn Products Development, Inc. | Low protein yogurts containing modified starches |
| CN105001346A (en) * | 2015-08-26 | 2015-10-28 | 广西梧州市明阳生化科技有限公司 | Production method for esterified modified starch |
| CN106256836A (en) * | 2016-06-06 | 2016-12-28 | 杭州嘉力丰投资股份有限公司 | A kind of environment-friendly type starch base wallpaper glue modified starch and preparation method thereof |
| CN106256836B (en) * | 2016-06-06 | 2018-10-30 | 杭州嘉力丰投资股份有限公司 | A kind of environment-friendly type starch base wallpaper glue converted starch and preparation method thereof |
| CN107467114A (en) * | 2017-07-25 | 2017-12-15 | 合肥台香食品有限公司 | A kind of bran bread quality modifying agent |
| CN108329396A (en) * | 2017-12-26 | 2018-07-27 | 吉林中粮生化有限公司 | A kind of preparation method of Ultra Tex 2 converted starch |
| CN108084284A (en) * | 2018-01-10 | 2018-05-29 | 南通通地生物技术有限公司 | A kind of production method of composite modified starch |
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Application publication date: 20140528 |