CN102627698A - Preparation method of sweet potato carboxymethyl modified starch - Google Patents
Preparation method of sweet potato carboxymethyl modified starch Download PDFInfo
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- CN102627698A CN102627698A CN2012100815982A CN201210081598A CN102627698A CN 102627698 A CN102627698 A CN 102627698A CN 2012100815982 A CN2012100815982 A CN 2012100815982A CN 201210081598 A CN201210081598 A CN 201210081598A CN 102627698 A CN102627698 A CN 102627698A
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Abstract
A preparation method of a sweet potato carboxymethyl modified starch. The method comprises steps of: adding NaOH into sweet potato starch; dissolving by an ethanol solution; stirring thoroughly, and then carting out microwave treatment to alkalify the starch; adding chloroacetic acid and carrying out microwave treatment; treating the starch by high voltage pulse electric field for etherification; cooling the solution to room temperature; regulating a pH value; filtering; rinsing the filter residue by alcohol solution and carrying out vacuum drying till a constant weight. The method of the invention employs microwave treatment to replace traditional water bath heating in sweet potato starch alkalization and etherification processes, so as to greatly improves production efficiency and saves the cost; meanwhile, high voltage pulsed electric field (PEF) is utilized in the sweet potato starch etherification process to effectively improve the degree of substitution (DS) of carboxymethyl starch to 0.94. The method is simple and convenient, has high in degree of substitution, and provides new way for deep processing and utilization of sweet potato starch.
Description
Technical field:
The present invention relates to a kind of preparation method of Ipomoea batatas carboxymethyl modified starch.
Background technology:
Sweet potato starch is a natural reproducible resource, and China is sweet potato starch big producing country, and it is cheap, is easy to gelatinization, and chemical reactivity is high, suitable preparation treated starch.The carboxymethylation of starch is that starch is carried out the process that etherificate makes starch conversion; CMS after the modification (CMS) has carboxyl inherent character; As: the throwing out of sequestering action, IX, polyanion and acid function, also have some solution properties simultaneously, as: thickening, gelatinization, moisture absorption, adhesivity and film-forming properties; Can be widely used in fields such as medicine, food, weaving, printing and dyeing, papermaking, petroleum drilling, be a kind of modified starch product that has market outlook.
To the history in existing more than 70 year of research of CMS,, the research of the carboxymethyl-modification of China's starch reports seldom in the world but also being in the carboxymethyl modified research of starting stage, especially sweet potato starch.
Summary of the invention:
Technical problem to be solved by this invention is: to problems such as heat-up time are long in the sweet potato starch modifying process in the prior art, efficient is low, substitution value is not high, a kind of preparation method of Ipomoea batatas carboxymethyl modified starch is provided.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of preparation method of Ipomoea batatas carboxymethyl modified starch, this method are the ratios that adds 690-710gNaOH in the 1kg sweet potato starch; After in sweet potato starch, adding NaOH, with the dissolve with ethanol solution of 75-80% mass concentration, the add-on of ethanolic soln is that every 1kg sweet potato starch adds the 10L ethanolic soln; Fully stir back microwave treatment 20-30min, so that the starch alkalization adds the chloroacetic ratio of 590-610g in the 1kg sweet potato starch again and adds Mono Chloro Acetic Acid; Behind the microwave treatment 60-70min, handle 5-6s, make the starch etherificate with pulsed electric field; After treating that solution is cooled to room temperature, adjust pH is 6.5-7.0, filters with 100 purpose filter clothes again; Filter residue is clean with the ethanolic soln rinsing of 80-85% mass concentration,, get final product to constant weight in 75-78 ℃ of vacuum-drying.
Above-mentioned sweet potato starch is that market is bought.Adjust pH is the routine techniques means in the aforesaid method, because solution is alkalescence before the adjust pH, therefore, available quality concentration is that glacial acetic acid solution, malic acid solution or the citric acid solution etc. of 30-45% neutralize in present method.
The power of said twice microwave treatment is all 300-350W.
The strength of electric field that said pulsed electric field is handled is 20-25KV/cm
2, frequency is 8000Hz, umber of pulse is 10-12.
Method of the present invention; In sweet potato starch alkalization and etherification procedure, adopt microwave treatment to replace the traditional water bath heating; Improve production efficiency significantly, practiced thrift cost, in the sweet potato starch etherification procedure, adopted pulsed electric field (PEF) to handle simultaneously; Effectively improved CMS substitution value (DS), DS can be increased to 0.94.
The preparation method of the Ipomoea batatas carboxymethyl modified starch that relates among the present invention has simple and easy to do, characteristics such as product substitution value height, and the deep processing utilization that can be sweet potato starch provides new approach.
Embodiment:
Embodiment 1
After in the 100kg sweet potato starch, adding 70kg NaOH; Dissolve with ethanol solution with 1000L 78% mass concentration; Fully stir back microwave treatment 25min (microwave power is 320W), so that the starch alkalization adds the 60kg Mono Chloro Acetic Acid again; Microwave treatment 65min (microwave power is 320W), (strength of electric field is 22KV/cm to insert the pulsed electric field device again
2, frequency is 8000Hz, umber of pulse is 10-12) in handle 5s, make the starch etherificate; After treating that solution is cooled to room temperature; Using in the glacial acetic acid solution of 40% mass concentration with adjust pH is 6.8, with the filtration of 100 purpose filter clothes, that filter residue is clean with the ethanolic soln rinsing of 82% mass concentration again; Place 76 ℃ vacuum drying oven to be dried to constant weight, get final product.
Embodiment 2
After in the 100kg sweet potato starch, adding 71kg NaOH; Dissolve with ethanol solution with 1000L 80% mass concentration; Fully stir back microwave treatment 30min (microwave power is 300W), so that the starch alkalization adds the 61kg Mono Chloro Acetic Acid again; Microwave treatment 70min (microwave power is 300W), (strength of electric field is 25KV/cm to insert the pulsed electric field device again
2, frequency is 8000Hz, umber of pulse is 10-12) in handle 6s, make the starch etherificate; After treating that solution is cooled to room temperature; Using in the citric acid solution of 45% mass concentration with adjust pH is 7.0, with the filtration of 100 purpose filter clothes, that filter residue is clean with the ethanolic soln rinsing of 85% mass concentration again; Place 78 ℃ vacuum drying oven to be dried to constant weight, get final product.
Embodiment 3
After in the 100kg sweet potato starch, adding 69kg NaOH; Dissolve with ethanol solution with 1000L 75% mass concentration; Fully stir back microwave treatment 20min (microwave power is 350W), so that the starch alkalization adds the 59kg Mono Chloro Acetic Acid again; Microwave treatment 60min (microwave power is 350W), (strength of electric field is 20KV/cm to insert the pulsed electric field device again
2, frequency is 8000Hz, umber of pulse is 10-12) in handle 5s, make the starch etherificate; After treating that solution is cooled to room temperature; Using in the malic acid solution of 30% mass concentration with adjust pH is 6.5, with the filtration of 100 purpose filter clothes, that filter residue is clean with the ethanolic soln rinsing of 80% mass concentration again; Place 75 ℃ vacuum drying oven to be dried to constant weight, get final product.
Claims (3)
1. the preparation method of an Ipomoea batatas carboxymethyl modified starch, it is characterized in that: this method is the ratio that adds 690-710gNaOH in the 1kg sweet potato starch, in sweet potato starch, add NaOH after; With the dissolve with ethanol solution of 75-80% mass concentration, the add-on of ethanolic soln is that every 1kg sweet potato starch adds the 10L ethanolic soln, fully stirs back microwave treatment 20-30min; Add the chloroacetic ratio of 590-610g in the 1kg sweet potato starch again and add Mono Chloro Acetic Acid, behind the microwave treatment 60-70min, handle 5-6s with pulsed electric field; After treating that solution is cooled to room temperature; Adjust pH is 6.5-7.0, filters with 100 purpose filter clothes, and filter residue is clean with the ethanolic soln rinsing of 80-85% mass concentration;, get final product to constant weight in 75-78 ℃ of vacuum-drying.
2. the preparation method of a kind of Ipomoea batatas carboxymethyl modified starch as claimed in claim 1 is characterized in that: the power of said twice microwave treatment is all 300-350W.
3. the preparation method of a kind of Ipomoea batatas carboxymethyl modified starch as claimed in claim 1 is characterized in that: the strength of electric field that said pulsed electric field is handled is 20-25KV/cm
2, frequency is 8000Hz, umber of pulse is 10-12.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566506A (en) * | 2016-03-13 | 2016-05-11 | 广西锦翰环保科技有限公司 | Method for producing high-viscosity and high-degree-of-substitution carboxymethyl cassava starch by utilizing ultrahigh-pressure blasting technique |
| CN106699907A (en) * | 2016-11-19 | 2017-05-24 | 王丽 | Processing method of refined taro starch |
| CN107573426A (en) * | 2017-09-25 | 2018-01-12 | 山东神州翔宇科技集团有限公司 | A kind of preparation method of sweet potato carboxymethyl modified starch |
| CN108822225A (en) * | 2018-06-20 | 2018-11-16 | 山东神州翔宇科技集团有限公司 | A kind of preparation method of sweet potato carboxymethyl modified starch |
| CN111303305A (en) * | 2020-03-23 | 2020-06-19 | 华南理工大学 | Method for preparing high-substitution-degree acetylated starch by electric field coupling ultrasound |
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| EP0166491A2 (en) * | 1984-06-27 | 1986-01-02 | Graanderivaten Raffinaderijen Amylum, en abrégé "G.R. Amylum", auparavant Glucoseries réunies | Process for preparing carboxymethyl starch and detergent composition containing this carboxymethyl starch |
| WO2002004525A1 (en) * | 2000-07-07 | 2002-01-17 | Chp Carbohydrate Pirna Gmbh & Co. Kg | Method for producing highly-substituted carboxyalkyl starch |
| 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 |
| CN101830994A (en) * | 2010-05-25 | 2010-09-15 | 西南大学 | Preparation method of potato carboxymethyl starch |
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2012
- 2012-03-26 CN CN 201210081598 patent/CN102627698B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0166491A2 (en) * | 1984-06-27 | 1986-01-02 | Graanderivaten Raffinaderijen Amylum, en abrégé "G.R. Amylum", auparavant Glucoseries réunies | Process for preparing carboxymethyl starch and detergent composition containing this carboxymethyl starch |
| WO2002004525A1 (en) * | 2000-07-07 | 2002-01-17 | Chp Carbohydrate Pirna Gmbh & Co. Kg | Method for producing highly-substituted carboxyalkyl starch |
| 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 |
| CN101830994A (en) * | 2010-05-25 | 2010-09-15 | 西南大学 | Preparation method of potato carboxymethyl starch |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105566506A (en) * | 2016-03-13 | 2016-05-11 | 广西锦翰环保科技有限公司 | Method for producing high-viscosity and high-degree-of-substitution carboxymethyl cassava starch by utilizing ultrahigh-pressure blasting technique |
| CN105566506B (en) * | 2016-03-13 | 2018-07-27 | 广西锦翰环保科技有限公司 | A kind of production method of modified tapioca starch |
| CN106699907A (en) * | 2016-11-19 | 2017-05-24 | 王丽 | Processing method of refined taro starch |
| CN107573426A (en) * | 2017-09-25 | 2018-01-12 | 山东神州翔宇科技集团有限公司 | A kind of preparation method of sweet potato carboxymethyl modified starch |
| CN108822225A (en) * | 2018-06-20 | 2018-11-16 | 山东神州翔宇科技集团有限公司 | A kind of preparation method of sweet potato carboxymethyl modified starch |
| CN111303305A (en) * | 2020-03-23 | 2020-06-19 | 华南理工大学 | Method for preparing high-substitution-degree acetylated starch by electric field coupling ultrasound |
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