CN109306020A - A kind of preparation method of esterification and crosslinking pre-gelatinized starch - Google Patents
A kind of preparation method of esterification and crosslinking pre-gelatinized starch Download PDFInfo
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- CN109306020A CN109306020A CN201710615302.3A CN201710615302A CN109306020A CN 109306020 A CN109306020 A CN 109306020A CN 201710615302 A CN201710615302 A CN 201710615302A CN 109306020 A CN109306020 A CN 109306020A
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- starch
- gelatinized
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- crosslinking
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
- C08B31/006—Crosslinking of derivatives of starch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
- C08B31/04—Esters of organic acids, e.g. alkenyl-succinated starch
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- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The present invention relates to a kind of preparation methods of esterification and crosslinking pre-gelatinized starch, which is characterized in that including using acetic anhydride as esterifying agent, adipic acid is crosslinking agent, prepares cassava esterified crosslinked starch；Pre-gelatinized processing is carried out to cassava esterified crosslinked starch again, obtains cassava esterification and crosslinking pre-gelatinized starch.The present invention passes through tri compound denaturation method, starch conversion method is optimized, finally obtain converted starch paste stability with higher, the transparency and water-retaining property, and lower paste temperature and retrogradation etc., the property of starch is significantly improved, excellent additive is can be used as and is added in the food such as some beans vermicelli, rice noodles, Noodle.
Description
Technical field:
The present invention relates to a kind of preparation methods of esterification and crosslinking pre-gelatinized starch, belong to Starch Production technical aspect.
Background field:
Converted starch refers to obtained Modified Starch or starch derivatives after the method processing native starch using physics, chemistry and enzyme
Biology, obtained new starch its property are improved reinforcement than ative starch, and application field is broader, and application effect is more effective.It is right
Chemically modified starch, single chemical modification have many good qualities, but there is also many deficiencies, such as the former shallow lake of crosslinked starch comparison
Powder has higher acidproof, high temperature resistant and anti-shear ability, and its viscosity, transparency, freeze-thaw stability, solubility and dilation
But it decreases；Although acetate starch improves transparency, dilation, solubility and freeze-thaw stability of ative starch etc., but
Also there is the deficiency of itself, if thermal stability is poor, shear shinning is easy under strong acid condition to decompose.Therefore to crosslinked starch and esterification
It is meaningful and necessary that starch carries out complex denaturation.
Composite modified starch refers to the starch derivatives obtained using two or more denaturation methods, and application field is wide
It is general.Complex denaturation not only has the advantages that single converted starch, and overcomes the deficiency of single denaturation.As cross-linked esterification is multiple
It closes converted starch and not only improves the heat-resisting of starch, acid and alkali-resistance, anti-shear ability, but also improve the solubility of starch, transparency, glue
Degree and freeze-thaw stability, reduce the retrogradation etc. of starch.There are many present converted starch industry binary complex denaturation research, but three
The research of first complex denaturation is actually rare.Using esterification, crosslinking and pre-gelatinized tri compound denaturation method, esterification and crosslinking is prepared
Pre-gelatinized composite modified starch is an important type in composite modified starch, more with crosslinked starch and acetate starch
Weight advantage can be used as thickener, stabilizer, water-retaining agent, binder and be applied to food industry.
Summary of the invention:
The purpose of the present invention is being optimized to starch conversion method by tri compound denaturation method, a kind of esterification friendship is provided
Join the preparation method of pre-gelatinized converted starch.
The present invention is to be implemented by following technical solution:
A kind of preparation method of esterification and crosslinking pre-gelatinized starch, it is characterized in that: the following steps are included:
Step 1 is calculated cassava ative starch by butt, and in reactor tank plus water is configured to starch milk: water: starch is 1.3:1's
Ratio；
Step 2 keeps the temperature under the conditions of 26 DEG C -27 DEG C, and stirs starch milk always, stirs while 1-3%(mass fraction is added dropwise)
The NaOH solution of concentration；
Step 3 when the pH for measuring starch milk is 8.8-9.0, stops that NaOH solution is added dropwise, 26 DEG C of -27 DEG C of constant temperature stir 40min；
Step 4, the mixed liquor of mixed acid anhydride and acetic anhydride is added dropwise into reactor tank, and acid anhydrides is added dropwise in time for adding 65-75min
In the process pH in reactor tank is controlled by dropwise addition NaOH solution simultaneously always and maintains 8.4-8.6；
Step 5 after acid anhydrides is added dropwise to complete, controls pH8.4-8.6, the reaction was continued 30min；
Step 6, the HCl solution with mass fraction for 1-3% adjust pH to terminate reaction, stop being added dropwise when pH value is 4.2-4.5
HCl solution；
Step 7, laboratory special centrifugal machine are centrifuged, and are washed in centrifugal process with clear water, and the conductance to washing water is lower than 100us/
When cm, stop washing, continues centrifugation and flowed out to water outlet without solid stream of water；
Step 8,60 DEG C of oven dryings of starch, crushing after centrifugation, for use；
Step 9, step 8 gained starch are made into the starch slurry that mass fraction is 40%, are carried out using cylinder drying to starch slurry
Pre-gelatinized, drying process obtain cross-linked esterification pre-gelatinized composite modified starch.
A kind of preparation method of esterification and crosslinking pre-gelatinized starch, wherein mixed acid anhydride is dissolved with 25% adipic acid
Acetic anhydride mixed solution.
A kind of preparation method of esterification and crosslinking pre-gelatinized starch, 25% mixed acid anhydride additive amount are starch on dry basis
The 0.04%-0.08% of quality, acetic anhydride additive amount are the 3%-6% of starch on dry basis quality.
A kind of preparation method of esterification and crosslinking pre-gelatinized starch needs after the esterified crosslinked starch washing of preparation is dry
It reconfigures starch slurry and carries out pre-gelatinized processing again, washing dry effect is to reduce the conductance of starch, and remove impurity.
A kind of preparation method of esterification and crosslinking pre-gelatinized starch, the roller table of cylinder drying pre-gelatinized starch
Face temperature is 160 DEG C -180 DEG C.
A kind of preparation method of esterification and crosslinking pre-gelatinized starch, roller drying pre-gelatinized starch method is in gelatinized corn starch
After changing, being dry, it is down to 5% to its moisture, i.e., available scraper scrapes starch from roller, crushes, is sieved.
The utility model has the advantages that
The present invention optimizes starch conversion method by tri compound denaturation method, finally obtains composite modified starch tool
There are higher paste stability, the transparency and water-retaining property and lower paste temperature and retrogradation etc., hence it is evident that improve starch
Property can be used as excellent additive and be added in the food such as some beans vermicelli, rice noodles, Noodle.
Detailed description of the invention:
1 production technological process of attached drawing.
Specific embodiment:
Embodiment 1
A specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
As shown in figure, a kind of preparation method of esterification and crosslinking pre-gelatinized starch, comprising the following steps:
Cassava ative starch is calculated by butt, is configured to starch milk in reactor tank with water: starch: water 1:1.3 by step 1.
Starch milk temperature is risen to 26 DEG C -27 DEG C, and stirs starch milk always by step 2, stirs while 1-3%(matter is added dropwise
Measure score) concentration NaOH solution, with adjust starch milk pH be 8.8-9.0 when stop be added dropwise NaOH solution, 26 DEG C of -27 DEG C of constant temperature
Stir 40min.
Step 3 calculates the adipic acid containing 25% mass fraction adipic acid for weighing starch on dry basis quality 0.04%-0.08%
With acetic anhydride mixed liquor, then the acetic anhydride of 3%-6% starch on dry basis quality is weighed, the two mixing.Acid is added dropwise dropwise into reactor tank
Acid anhydride, time for adding 65-75min, it is best for being dripped off with 70min.It is added dropwise in anhydride procedural and is begun simultaneously by the way that NaOH solution is added dropwise
PH maintains 8.4-8.6 in control reactor tank eventually.
Step 4 after acid anhydrides is added dropwise to complete, controls pH8.4-8.6, the reaction was continued 30min, sends out acid anhydrides sufficiently with starch
Raw reaction.
Step 5, the HCl solution with mass fraction for 1-3% adjusts pH to terminate reaction after the reaction was completed, adjusts pH value and is
Stop that HCl is added dropwise when 4.2-4.5.
Step 6, laboratory special centrifugal machine are centrifuged, and are washed in centrifugal process with clear water, the conductance to washing water is lower than
When 100us/cm, stop washing, continues centrifugation and flowed out to water outlet without solid stream of water.
Step 7,60 DEG C of oven dryings of starch, crushing after centrifugation, for use.
Dried esterified crosslinked starch is added water to be made into the starch slurry that mass fraction is 40%, cylinder surface temperature by step 8
When degree rises to 160 DEG C -180 DEG C, starch milk is distributed in cylinder surface, starch slurry is pasted in advance using roller rotation and high temperature
Change, be dried, is down to 5% to its moisture, starch discharging pulverizes and sieves to obtain cross-linked esterification pre-gelatinized composite modified starch.
It is merely illustrated the principles of the invention described in examples detailed above and specification and most preferred embodiment, is not departing from this hair
Under the premise of bright spirit and scope, various changes and improvements may be made to the invention, these changes and improvements are included in the present invention
Protection scope in.
Claims (6)
1. a kind of preparation method of esterification and crosslinking pre-gelatinized starch, it is characterized in that: the following steps are included:
Step 1 is calculated cassava ative starch by butt, and in reactor tank plus water is configured to starch milk: water: starch is 1.3:1's
Ratio；
Step 2 keeps the temperature under the conditions of 26 DEG C -27 DEG C, and stirs starch milk always, stirs while 1-3%(mass fraction is added dropwise)
The NaOH solution of concentration；
Step 3 when the pH for measuring starch milk is 8.8-9.0, stops that NaOH solution is added dropwise, 26-27 DEG C of constant temperature stirs 40min；
Step 4, the mixed liquor of mixed acid anhydride and acetic anhydride is added dropwise into reactor tank, and acid anhydrides is added dropwise in time for adding 65-75min
In the process pH in reactor tank is controlled by dropwise addition NaOH solution simultaneously always and maintains 8.4-8.6；
Step 5 after acid anhydrides is added dropwise to complete, controls pH8.4-8.6, the reaction was continued 30min；
Step 6, the HCl solution with mass fraction for 1-3% adjust pH to terminate reaction, stop being added dropwise when pH value is 4.2-4.5
HCl solution；
Step 7, laboratory special centrifugal machine are centrifuged, and are washed in centrifugal process with clear water, and the conductance to washing water is lower than 100us/
When cm, stop washing, continues centrifugation and flowed out to water outlet without solid stream of water；
Step 8,60 DEG C of oven dryings of starch, crushing after centrifugation, for use；
Step 9, step 8 gained starch are made into the starch slurry that mass fraction is 40%, are carried out using cylinder drying to starch slurry
Pre-gelatinized, drying process obtain cross-linked esterification pre-gelatinized composite modified starch.
2. the preparation method of a kind of esterification and crosslinking pre-gelatinized starch according to claim 1, it is characterized in that: mixed acid anhydride is
Dissolved with the acetic anhydride mixed solution of 25% adipic acid.
3. the preparation method of a kind of esterification and crosslinking pre-gelatinized starch according to claim 1, it is characterized in that: 25% mixed acid
Acid anhydride additive amount is the 0.04%-0.08% of starch on dry basis quality, and acetic anhydride additive amount is the 3%-6% of starch on dry basis quality.
4. the preparation method of a kind of esterification and crosslinking pre-gelatinized starch according to claim 1, it is characterized in that: the esterification of preparation
Starch slurry is reconfigured after crosslinked starch washing is dry and carries out pre-gelatinized processing again, and washing dry effect is the electricity for reducing starch
It leads, and removal impurity.
5. the preparation method of a kind of esterification and crosslinking pre-gelatinized starch according to claim 1, it is characterized in that: cylinder drying
The drum surface temperature of pre-gelatinized starch is 160 DEG C -180 DEG C.
6. the preparation method of a kind of esterification and crosslinking pre-gelatinized starch according to claim 1, it is characterized in that: roller drying is pre-
Gelatinized starch method is down to 5% to its moisture after starch gelatinization, dry, i.e., available scraper scrapes starch from roller, crushes, mistake
Sieve to obtain finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710615302.3A CN109306020A (en) | 2017-07-26 | 2017-07-26 | A kind of preparation method of esterification and crosslinking pre-gelatinized starch |
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| CN201710615302.3A CN109306020A (en) | 2017-07-26 | 2017-07-26 | A kind of preparation method of esterification and crosslinking pre-gelatinized starch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454019A (en) * | 2020-03-24 | 2020-07-28 | 福建省春天生态科技股份有限公司 | Preparation method of high-strength raw soil material for villages |
-
2017
- 2017-07-26 CN CN201710615302.3A patent/CN109306020A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454019A (en) * | 2020-03-24 | 2020-07-28 | 福建省春天生态科技股份有限公司 | Preparation method of high-strength raw soil material for villages |
| CN111454019B (en) * | 2020-03-24 | 2022-06-28 | 福建省春天生态科技股份有限公司 | Preparation method of rural high-strength raw soil material |
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