CN101863992A - Dry method for preparing dextrin by microwave - Google Patents
Dry method for preparing dextrin by microwave Download PDFInfo
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- CN101863992A CN101863992A CN201010203111A CN201010203111A CN101863992A CN 101863992 A CN101863992 A CN 101863992A CN 201010203111 A CN201010203111 A CN 201010203111A CN 201010203111 A CN201010203111 A CN 201010203111A CN 101863992 A CN101863992 A CN 101863992A
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- dextrin
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Abstract
The invention relates to a dry method for preparing dextrin by microwave. In the preparation method, starch and inorganic acid are used as raw materials; and by using special thermal effect and non-thermal effect of the microwave, the dextrin is prepared by hydrolyzing the starch with the acid in a microwave field. The preparation method comprises the following steps of: pouring the starch into an acid dosing machine, starting the acid dosing machine, spraying 1 to 30 percent acid in an amount which is 2 to 20 percent of the mass of the starch and uniformly mixing the starch and the acid; and putting the uniformly mixed starch which is added with the acid into a microwave reactor to perform microwave radiation for 2 to 20 minutes to obtain a finished product of the dextrin. Compared with the prior art, the dry method for preparing the dextrin by the microwave has the characteristics of simple and safe operation, low reaction temperature, short time, high efficiency, low energy consumption, no pollution, uniform starch hydrolysis, large-scale continuous production and the like, and is a simple, high-efficiency, energy-saving and environmental-friendly method for preparing the dextrin.
Description
Technical field
The present invention relates to the method that a kind of dry microwave prepares dextrin.
Background technology
Dextrin is to be raw material with starch, prepares by method hydrolysis such as physics, chemistry, biological chemistries, and be the product of starch partial hydrolysis.It is widely used in fields such as food, chemical industry, printing and dyeing.
On production technique, the existing three kinds of methods that have of producing dextrin: (1) bakes method, is about to the reactor that starch is inserted agitator, is heated with stirring between 180 ℃-220 ℃ to bake; (2) add acid roasting stir-fry method, the starch that is added with diluted mineral acid is heated to 165 ℃-220 ℃ roastings fried 2 hours; (3) enzyme process.Add acid roasting stir-fry method and have defectives such as temperature of reaction height, the time is long, the starch hydrolysis is inhomogeneous.
Summary of the invention
The object of the invention provides a kind of method that sour microwave method prepares dextrin that adds, be a kind of be raw material with starch and mineral acid, in microwave field, utilize special heat effect of microwave and non-thermal effect, acid hydrolyzed starches prepares the method for dextrin.Its chemical equation is as follows:
A kind of dry microwave of the present invention prepares the method for dextrin, compared with prior art has safety simple to operate, temperature of reaction is low, the time is short, efficient is high, energy consumption is low, pollution-free, characteristics such as the starch hydrolysis is even, can realize large-scale continuous production.Be a kind of simple, efficient, energy saving, environmental protection preparation method of dextrin.
A kind of dry microwave prepares the method for dextrin, and its concrete steps are:
(1) add the acid mediation: starch is poured in the acid adding machine, started acid adding machine, it is the acid of 1-30% that spraying adds relative starch quality 2-20% concentration, is in harmonious proportion to even.
(2) microwave radiation: will be in harmonious proportion and add acid-starch uniformly and place microwave reactor, radiation initiation, catalyzed reaction obtain the finished product dextrin.
Embodiment
Further specify technical scheme of the present invention below by embodiment, but do not exceed with embodiment.
Embodiment 1
In acid adding machine, add 100kg starch, start stirrer, spraying adds rare nitric acid 2kg of 8%, be in harmonious proportion 20 minutes to even, to add acid is in harmonious proportion good starch and transfers to microwave continuous and transmit in the box reactor, control transfer rate, make starch in microwave field radiated time about 10 minutes, the cooling and finished product.
Embodiment 2
In acid adding machine, add 100kg starch, start stirrer, spraying adds 10% dilute hydrochloric acid 10kg, be in harmonious proportion 20 minutes to even, to add acid is in harmonious proportion good starch and transfers to microwave continuous and transmit in the box reactor, control transfer rate, make starch in microwave field radiated time about 15 minutes, the cooling and finished product.
Claims (4)
1. the present invention relates to the method that a kind of dry microwave prepares dextrin, it is characterized in that, described preparation method be a kind of be raw material with starch and mineral acid, in microwave field, utilize special heat effect of microwave and non-thermal effect, acid hydrolyzed starches prepares the method for dextrin.Its concrete steps are:
(1) add the acid mediation: starch is poured in the acid adding machine, started acid adding machine, it is the acid of 1-30% that spraying adds relative starch quality 2-20% concentration, is in harmonious proportion to even.
(2) microwave radiation: will be in harmonious proportion and add acid-starch uniformly and place microwave reactor, microwave radiation causes, catalyzed reaction, obtains the finished product dextrin.
2. a kind of method that sour microwave method prepares dextrin that adds as claimed in claim 1 is characterized in that, described starch is a kind of or wherein any phase mixture in W-Gum, potato starch, tapioca (flour), sweet potato starch, the wheat starch.
3. a kind of method that sour microwave method prepares dextrin that adds as claimed in claim 1 is characterized in that, described mineral acid is a kind of or wherein any phase mixture in hydrochloric acid, nitric acid, the sulfuric acid, and concentration is 1-30%, and consumption is relative starch quality 2-20%.
4. a kind of method that sour microwave method prepares dextrin that adds as claimed in claim 1, it is characterized in that, described microwave reactor is that household microwave oven, various large-scale microwave reaction kettle, microwave continuous transmit box reactor, and its frequency is 300MHZ-300GHZ, particularly 918-2450MHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010203111A CN101863992A (en) | 2010-06-18 | 2010-06-18 | Dry method for preparing dextrin by microwave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010203111A CN101863992A (en) | 2010-06-18 | 2010-06-18 | Dry method for preparing dextrin by microwave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101863992A true CN101863992A (en) | 2010-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010203111A Pending CN101863992A (en) | 2010-06-18 | 2010-06-18 | Dry method for preparing dextrin by microwave |
Country Status (1)
| Country | Link |
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| CN (1) | CN101863992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516401A (en) * | 2011-11-11 | 2012-06-27 | 汉中秦发糊精有限责任公司 | Production method of medical dextrin |
| CN103304675A (en) * | 2013-07-03 | 2013-09-18 | 内蒙古大学 | Simple and easy preparation method of starch yellow dextrin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2398846A1 (en) * | 2000-02-16 | 2001-08-23 | Aventis Cropscience Gmbh | Process for producing thermochemically modified starch |
| CN101775075A (en) * | 2010-02-11 | 2010-07-14 | 张航 | Modified starch microwave heating reaction system with dry method |
-
2010
- 2010-06-18 CN CN201010203111A patent/CN101863992A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2398846A1 (en) * | 2000-02-16 | 2001-08-23 | Aventis Cropscience Gmbh | Process for producing thermochemically modified starch |
| CN101775075A (en) * | 2010-02-11 | 2010-07-14 | 张航 | Modified starch microwave heating reaction system with dry method |
Non-Patent Citations (2)
| Title |
|---|
| 滕健等: "《微波法制备抗性麦芽糊精的研究"", 《食品工业科技》 * |
| 韩子榕: ""使用微波辅助酸修饰生产半结晶性玉米淀粉糊精及其性质"", 《国立台湾大学生物资源农业学院食品科技研究所硕士论文》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516401A (en) * | 2011-11-11 | 2012-06-27 | 汉中秦发糊精有限责任公司 | Production method of medical dextrin |
| CN103304675A (en) * | 2013-07-03 | 2013-09-18 | 内蒙古大学 | Simple and easy preparation method of starch yellow dextrin |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101020 |