CN1389474A - Starch-modifying method - Google Patents
Starch-modifying method Download PDFInfo
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- CN1389474A CN1389474A CN 02138710 CN02138710A CN1389474A CN 1389474 A CN1389474 A CN 1389474A CN 02138710 CN02138710 CN 02138710 CN 02138710 A CN02138710 A CN 02138710A CN 1389474 A CN1389474 A CN 1389474A
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- starch
- radiation
- carried out
- out modification
- amylum
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- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention refers to an starch denaturing method. Its character is that: adopt the gamma-ray produced by 60CO as the radiant source to irradiate the amylum on the oxygenous condition, so that to make the starch ramidification which contains hydrogen peroxide and fallen free-group come to being; and the realizing process is as follows: 1) perform pre-irradiating process on the amylum; 2) stable process; 3) mix. The invention has the advantages of simple operation, low cost and good stability. The denatured amylum that the invention produces not only can be used in the field where the denatured amylum is needed, such as the weaving field, the paper-making field, etc. but also can be the raw material used to produce the graft amylum and other complex denatured amylum.
Description
Technical field
The present invention relates to a kind of method to starch conversion.
Background technology
The method of producing starch derivative at present is chemical process, as phosphate ester starch, hydroxypropylated starch etc.Chemical process complex process, cost height.
Summary of the invention
The object of the present invention is to provide a kind of simple to operate, cost is low, the method that starch is carried out modification of good stability.
To achieve these goals, technical scheme of the present invention is: a kind of method that starch is carried out modification, adopt
60The gamma-rays that CO produced carries out irradiation to starch as source of radiation under aerobic conditions, generate the starch derivative contain hydroperoxide and trapped radical, follows these steps to realize: 1), to the pre-radiotreatment of starch, 2), stabilizing treatment, 3), mix.
Described starch derivative, its viscosity change law and radiation dose satisfy following equation:
A, b, c, d---be process constant
M---radiation dose
η
Former---the viscosity of ative starch
η
0---the viscosity of water.
Described to the pre-radiotreatment of starch, source of radiation: the cobalt source (
60CO), source radiation activity 〉=150,000 Curie; Radiation mode: dynamically; Even mode: stand up, be deposited in the every bag of dose difference≤0.5KGy of starch in each span hanging basket.
Described standing up, be divided into two kinds: once stand up (1): this process using is only turned over body one time, and technology is simple, and suspender internal absorbed dose maximum value and minimum value difference are less than 1.6KGy, and flow process is a-d; Stand up for (2) three times: this process using is turned over body three times, and suspender internal absorbed dose maximum value and minimum value difference are less than 0.5KGy, and flow process is a-b-c-d.
Described stabilizing treatment is to after the pre-radiotreatment of starch, adds a small amount of organic class superoxide.
Described be mixed into add a small amount of organic class superoxide after, mixed.
The present invention adopts
60The CO radiation devices carries out irradiation to starch under aerobic conditions, generate the starch derivative contain hydroperoxide and trapped radical, and is simple to operate, cost is low.After the pre-radiotreatment of starch, add a small amount of organic class superoxide and carry out stabilizing treatment, good stability.The present invention has accurately set up the relation between the rheological property after radiation dose and the starch pasting, can press service requirements (viscosity) the control radiation dose of product easily.
Description of drawings
Fig. 1 is technological process of production figure of the present invention
Fig. 2 be the present invention in the pre-radiotreatment process of starch first kind stand up synoptic diagram
Fig. 3 be the present invention in the pre-radiotreatment process of starch second kind stand up synoptic diagram.
Embodiment
As shown in Figure 1, a kind of method that starch is carried out modification adopts
60The gamma-rays that CO produced carries out irradiation to starch as source of radiation under aerobic conditions, generate the starch derivative that contains hydroperoxide and trapped radical, and starch derivative viscosity change law and radiation dose satisfy following equation:
A, b, c, d---be process constant
M---radiation dose
η
Former---the viscosity of ative starch
η
0---the viscosity of water.
Follow these steps to realize:
1), to the pre-radiotreatment of starch:
Source of radiation: the cobalt source (
60CO), source radiation activity 〉=150,000 Curie; Radiation mode: dynamically; Even mode: stand up, be deposited in the every bag of dose difference≤0.5KGy of starch in each span hanging basket.Described standing up, be divided into two kinds: once stand up (1): this process using is only turned over body one time, and technology is simple, and suspender internal absorbed dose maximum value and minimum value difference are less than 1.6KGy, and flow process is a-d; Stand up for (2) three times: this process using is turned over body three times, and suspender internal absorbed dose maximum value and minimum value difference are less than 0.5KGy, and flow process is a-b-c-d.
2), stabilizing treatment: after the pre-radiotreatment of starch, add a small amount of organic class superoxide.Product is exactly work in-process after the pre-radiotreatment, because its inner special construction, work in-process are perfect not enough, it is bigger that the viscosity of for example forming sediment is influenced by water, and viscosity stability can't reach desirable requirement, is mixed so also need to add a small amount of organic class superoxide in the work piece of starch.
3), mix: after adding a small amount of organic class superoxide, mixed.
4), pack is dispatched from the factory: mix the back pack and dispatch from the factory.
The modified starch that the present invention produces, it both can be used as weaving, papermaking etc. needs to use the field of modified starch to use, and can be used as the raw material of producing graft starch and other composite modified starch again.
Claims (6)
1, a kind of method that starch is carried out modification is characterized in that adopting
60The gamma-rays that CO produced carries out irradiation to starch as source of radiation under aerobic conditions, generate the starch derivative contain hydroperoxide and trapped radical, follows these steps to realize: 1), to the pre-radiotreatment of starch, 2), stabilizing treatment, 3), mix.
2, the method that starch is carried out modification according to claim 1 is characterized in that described starch derivative, and its viscosity change law and radiation dose satisfy following equation:
A, b, c, d---be process constant
M---radiation dose
η
Former---the viscosity of ative starch
η
0---the viscosity of water.
3, the method that starch is carried out modification according to claim 1, it is characterized in that described to the pre-radiotreatment of starch, source of radiation:
50CO, source radiation activity 〉=150,000 Curie; Radiation mode: dynamically; Even mode: stand up, be deposited in the every bag of dose difference≤0.5KGy of starch in each span hanging basket.
4, method of starch being carried out modification according to claim 3, it is characterized in that described standing up, be divided into two kinds: once stand up (1): this process using is only turned over body one time, and technology is simple, and suspender internal absorbed dose maximum value and minimum value difference are less than 1.6KGy; Stand up for (2) three times: this process using is turned over body three times, and suspender internal absorbed dose maximum value and minimum value difference are less than 0.5KGy.
5, the method that starch is carried out modification according to claim 1 is characterized in that described stabilizing treatment for to after the pre-radiotreatment of starch, adds a small amount of organic class superoxide.
6, the method that starch is carried out modification according to claim 1, it is characterized in that described be mixed into add a small amount of organic class superoxide after, mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138710 CN1389474A (en) | 2002-06-25 | 2002-06-25 | Starch-modifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138710 CN1389474A (en) | 2002-06-25 | 2002-06-25 | Starch-modifying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1389474A true CN1389474A (en) | 2003-01-08 |
Family
ID=4749648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138710 Pending CN1389474A (en) | 2002-06-25 | 2002-06-25 | Starch-modifying method |
Country Status (1)
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| CN (1) | CN1389474A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491401C (en) * | 2006-07-28 | 2009-05-27 | 湖北省农业科学院辐照加工研究所 | Process of preparing non-ionic starch by initiating irradiation |
| CN101177457B (en) * | 2007-10-30 | 2010-10-06 | 广州辐照技术研究开发中心 | Method for preparing dicyandiamide-formaldehyde resin branched starch ether by employing radiation initiation |
| CN103554281A (en) * | 2013-10-16 | 2014-02-05 | 广西红豪淀粉开发有限公司 | Preparation method of low-viscosity cassava composite modified starch |
| CN107573421A (en) * | 2017-09-11 | 2018-01-12 | 江苏省农业科学院 | A kind of preparation method of high-performance converted starch |
-
2002
- 2002-06-25 CN CN 02138710 patent/CN1389474A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100491401C (en) * | 2006-07-28 | 2009-05-27 | 湖北省农业科学院辐照加工研究所 | Process of preparing non-ionic starch by initiating irradiation |
| CN101177457B (en) * | 2007-10-30 | 2010-10-06 | 广州辐照技术研究开发中心 | Method for preparing dicyandiamide-formaldehyde resin branched starch ether by employing radiation initiation |
| CN103554281A (en) * | 2013-10-16 | 2014-02-05 | 广西红豪淀粉开发有限公司 | Preparation method of low-viscosity cassava composite modified starch |
| CN103554281B (en) * | 2013-10-16 | 2016-03-30 | 广西红豪淀粉开发有限公司 | A kind of low viscosity cassava method for preparing composite modified starch |
| CN107573421A (en) * | 2017-09-11 | 2018-01-12 | 江苏省农业科学院 | A kind of preparation method of high-performance converted starch |
| CN107573421B (en) * | 2017-09-11 | 2023-03-28 | 江苏省农业科学院 | Preparation method of high-performance modified starch |
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