CN104311678A - Preparation method of acetylated distarch adipate starch - Google Patents
Preparation method of acetylated distarch adipate starch Download PDFInfo
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- CN104311678A CN104311678A CN201410608928.8A CN201410608928A CN104311678A CN 104311678 A CN104311678 A CN 104311678A CN 201410608928 A CN201410608928 A CN 201410608928A CN 104311678 A CN104311678 A CN 104311678A
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Abstract
The invention provides a preparation method of acetylated distarch adipate starch. The preparation method is characterized by comprising the following steps: preparing starch milk, adding alkaline liquor, stirring, adding oxalic anhydride and acetic anhydride for reaction after vacuumizing, washing, dehydrating and drying after neutralization, and discharging the materials. According to the preparation method of acetylated distarch adipate starch, oxalic anhydride is difficultly converted into oxalic acid by heating and vacuum conditions, and even partial oxalic anhydride which has been converted into oxalic acid also reacts to generate oxalic anhydride, thereby ensuring the efficient crosslinking reaction.
Description
Technical field
The present invention relates to Starch Production technical field, particularly relate to the preparation method of the two starch adipate starch of a kind of acetylize.
Background technology
China's tapioca (flour) aboundresources, cost of material is low, and branching content, up to 83%, a lot of performance such as gelatinization point, viscosity, paste liquid transparency, mouthfeel is all better than cereals starch, has become the second largest starch material continued outside corn.But the paste liquid stability of viscidity of tapioca (flour) is poor, acidproof, heat-resisting, resistant to shearing performance is all difficult to the requirement meeting modernization industry, causes the application of tapioca (flour) to be subject to certain restrictions.Ative starch cold water can be effectively improved insoluble by physics, chemistry or enzyme process denaturing treatment, starch paste is at acid, heat, the performance deficiency such as unstable under shear action, for it increases, some is functional or introduce new characteristic, makes it more be widely used in the fields such as food, medicine, weaving, papermaking, daily-use chemical industry.The two starch adipate of acetylize is that starch is cross-linked a kind of cross-linked esterification composite modified starch obtained with acetic anhydride esterification through hexanodioic acid; product has feature that is crosslinked and esterification starch concurrently, has the features such as thermostability is high, good fluidity, anti-shear ability and acid resistance are strong.
Such as Chinese patent discloses a kind of two starch of low amylose starch cassava hexanodioic acid of resist processing, application number is CN02152739.3, the applying date is 20021120, and this invention relates to a kind of oxalic acid acid anhydride of mixing and the crosslinked low amylose tapioca flour of acetic anhydride reagent.This invention initiative the oxalic acid acid anhydride with powerful cross-linking effect is applied in the manufacture of tapioca (flour), to Starch Production industry, there is pushing effect.But it also has certain limitation: adipic anhydride poor stability, the easy moisture absorption forms hexanodioic acid, and in actual production, usually cannot determine addition and significant quantity accurately, in addition, oxalic acid has toxicity.
Summary of the invention
For the deficiencies in the prior art, the invention reside in the preparation method that the two starch adipate starch of a kind of acetylize is provided.
For achieving the above object, the present invention is achieved by following technical proposals:
A preparation method for the two starch adipate starch of acetylize, is characterized in that, comprise the following steps:
1000 unit mass tapioca (flour)s are put into retort and are added water to stir and be modulated into the starch milk that concentration is greater than 30% by step one;
Step 2, stirs starch milk, constantly will add the alkali lye that concentration is 1 ~ 3mol/L in the process stirred;
Step 3, surveys described starch milk pH value in whipping process, when pH value reaches 10.0 ~ 13.0, stop adding alkali lye;
Step 4, vacuumizes retort, continues stir and in described starch milk, add 2 ~ 4 unit mass oxalic acid acid anhydrides and 20 ~ 30 unit mass acetic anhydride fast, heats and reacts 1 hour;
Step 5, continues to stir and adjusts pH value with the hydrochloric acid that mass percent concentration is 3%, stopping adding hydrochloric acid when pH value reaches 5 ~ 7;
Step 6, massive laundering is washed, and dewaters, is drying to obtain finished product.
Further, 50 ~ 80 unit mass sodium-chlor when described tapioca (flour) mixes with water, can be added, be mainly used in the gelatinization point improving starch.
Further, described tapioca (flour), oxalic acid acid anhydride, acetic anhydride, sodium-chlor can carry out the preparation of random scale according to the mass ratio of 1000:2 ~ 4:20 ~ 30:50 ~ 80.
Beneficial effect of the present invention is: the present invention makes oxalic acid acid anhydride be difficult to change into oxalic acid by heating and vacuum condition, even the part being converted into oxalic acid is also reacted into oxalic acid acid anhydride, thus ensure that efficiently carrying out of crosslinking reaction.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the preparation method of the two starch adipate starch of a kind of acetylize, comprises the following steps:
Step one, 1000 unit mass tapioca (flour)s are put into retort and add water to stir and be modulated into the starch milk that concentration is greater than 30%, reaction medium can dilute reagent too much, reduce speed of reaction, very little, then starch milk stirs motionless reaction medium, easy precipitation, and reagent to add rear reaction uneven;
Step 2, can add 50 ~ 80 unit mass sodium-chlor when described tapioca (flour) mixes with water, be mainly used in the gelatinization point improving starch, starch granules also can be suppressed to expand;
Step 2, stirs starch milk, and constantly will add the alkali lye that concentration is 1 ~ 3mol/L in the process stirred, alkaline condition is conducive to the swelling of starch granules, accelerates agent penetration;
Step 3, surveys described starch milk pH value in whipping process, when pH value reaches 10.0 ~ 13.0, stop adding alkali lye, appropriate alkali lye reaches the object improving etherification reaction speed of reaction;
Step 4, retort is vacuumized, continue stir and in described starch milk, add 2 ~ 4 unit mass oxalic acid acid anhydrides and 20 ~ 30 unit mass acetic anhydride fast, heat and react 1 hour, oxalic acid acid anhydride is made to be difficult to change into oxalic acid by heating and vacuum condition, even the part being converted into oxalic acid is also reacted into oxalic acid acid anhydride, thus ensure that efficiently carrying out of crosslinking reaction; Acetic anhydride is then acetylizad reagent in addition;
Step 5, continue to stir and adjust pH value with the hydrochloric acid that mass percent concentration is 3%, stop adding hydrochloric acid when pH value reaches 5 ~ 7, it act as and neutralizes unnecessary alkali lye, product is become and starts from edible PH neutral material;
Step 6, massive laundering is washed, and dewaters, is drying to obtain finished product, is the conventional means of Starch Production herein, repeats no more.
What describe in above-described embodiment and specification sheets just illustrates principle of the present invention and most preferred embodiment; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.
Claims (3)
1. a preparation method for the two starch adipate starch of acetylize, is characterized in that, comprise the following steps:
Step one, puts into retort and adds water to stir and be modulated into the starch milk that concentration is greater than 30% by the tapioca (flour) of 1000 unit masses;
Step 2, stirs starch milk, constantly will add the alkali lye that concentration is 1 ~ 3mol/L in the process stirred;
Step 3, surveys described starch milk pH value in whipping process, when pH value reaches 10.0 ~ 13.0, stop adding alkali lye;
Step 4, vacuumizes retort, continues stir and in described starch milk, add 2 ~ 4 unit mass oxalic acid acid anhydrides and 20 ~ 30 unit mass acetic anhydride fast, heats and reacts 1 ~ 1.5 hour;
Step 5, continues to stir and adjusts pH value with the hydrochloric acid that mass percent concentration is 3%, stopping adding hydrochloric acid when pH value reaches 5 ~ 7;
Step 6, massive laundering is washed, and dewaters, is drying to obtain finished product.
2. the preparation method of the two starch adipate starch of a kind of acetylize according to claim 1, is characterized in that: can add 50 ~ 80 unit mass sodium-chlor when described tapioca (flour) mixes with water.
3. the preparation method of the two starch adipate starch of a kind of acetylize according to claim 2, is characterized in that: described tapioca (flour), oxalic acid acid anhydride, acetic anhydride, sodium-chlor can according to 1000:(2 ~ 4): (20 ~ 30): the mass ratio of (50 ~ 80) carries out the preparation of random scale.
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| CN201410608928.8A CN104311678B (en) | 2014-11-04 | 2014-11-04 | A kind of preparation method of the double starch adipate starch of acetylation |
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| CN104311678B CN104311678B (en) | 2018-04-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433094A (en) * | 2018-03-26 | 2018-08-24 | 诸城兴贸玉米开发有限公司 | A kind of production chafing dish oil skin of beancurd converted starch |
| CN114651015A (en) * | 2019-10-29 | 2022-06-21 | 斯美思股份有限公司 | Modified acetylated distarch adipate, and products containing same |
| CN115073617A (en) * | 2022-07-11 | 2022-09-20 | 吉林中粮生化有限公司 | Preparation method of mixed anhydride crosslinked starch |
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| CN1422871A (en) * | 2001-11-21 | 2003-06-11 | 国家淀粉及化学投资控股公司 | Working-resisting low-straight-chain starch dimandioc adipate |
| CN101033261A (en) * | 2006-03-10 | 2007-09-12 | 四平帝达变性淀粉有限公司 | Method of preparing acetylated distarch adipate |
| CN102408489A (en) * | 2011-07-28 | 2012-04-11 | 广西农垦明阳生化集团股份有限公司 | Preparation method of compound modified starch |
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| CN1422871A (en) * | 2001-11-21 | 2003-06-11 | 国家淀粉及化学投资控股公司 | Working-resisting low-straight-chain starch dimandioc adipate |
| CN101033261A (en) * | 2006-03-10 | 2007-09-12 | 四平帝达变性淀粉有限公司 | Method of preparing acetylated distarch adipate |
| CN102408489A (en) * | 2011-07-28 | 2012-04-11 | 广西农垦明阳生化集团股份有限公司 | Preparation method of compound modified starch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433094A (en) * | 2018-03-26 | 2018-08-24 | 诸城兴贸玉米开发有限公司 | A kind of production chafing dish oil skin of beancurd converted starch |
| CN114651015A (en) * | 2019-10-29 | 2022-06-21 | 斯美思股份有限公司 | Modified acetylated distarch adipate, and products containing same |
| CN114651015B (en) * | 2019-10-29 | 2023-06-20 | 斯美思股份有限公司 | Modified acetylated distarch adipate, and products containing same |
| CN115073617A (en) * | 2022-07-11 | 2022-09-20 | 吉林中粮生化有限公司 | Preparation method of mixed anhydride crosslinked starch |
| CN115073617B (en) * | 2022-07-11 | 2023-08-08 | 吉林中粮生化有限公司 | Preparation method of mixed anhydride crosslinked starch |
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| CN104311678B (en) | 2018-04-06 |
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