CN102453100A - Pure dry preparation method of acid treated starch - Google Patents
Pure dry preparation method of acid treated starch Download PDFInfo
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- CN102453100A CN102453100A CN2010105305169A CN201010530516A CN102453100A CN 102453100 A CN102453100 A CN 102453100A CN 2010105305169 A CN2010105305169 A CN 2010105305169A CN 201010530516 A CN201010530516 A CN 201010530516A CN 102453100 A CN102453100 A CN 102453100A
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- acid treated
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- treated starches
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Abstract
The invention belongs to a production method of modified starch, and in particular relates to a pure dry preparation method of acid treated starch, comprising the following steps of: putting native starch into a self-control electrothermal interlayer reactor with temperature reaching 120-180 DEG C, keeping stirring; adding a hydrochloric acid, nitric acid or sulfuric acid solution with the concentration of 0.6%-12.5% to the self-control electrothermal interlayer reactor before the gelatinization temperature of the material is reached, wherein the weight of the added acid solution is 0.07%-2.00% of that of the native starch; carrying out catalytic reaction for 2.5-3.5 hours; and adjusting the pH value to be neutral to obtain the modified starch. The method provided by the invention has the advantages of simple process equipment, short production cycle, low cost and high product quality.
Description
Technical field
The invention belongs to a kind of working method of modified starch, particularly relate to the preparation method of the pure dry method of a kind of acid treated starches.
Background technology
The method of producing acid treated starches now generally adopts wet method, and the starch slurry that is about to ative starch furnishing concentration about 32～75% (weight) is sent in the reactor drum, adds hydrochloric acid or the sulfuric acid of 0.5-10%; After being lower than under the gelatinization point condition (50 ℃-55 ℃) stir about 10 hours, and meeting the requirements of viscosity, the neutralization of hydro-oxidation sodium dilute solution; Stopped reaction, after washing, drying, what obtain is exactly acid treated starches; When the high mobility acid treated starches of production was above like 70 mobilities, the water solubles amount of generation was bigger, and 90 mobility product water solubles growing amounts can reach 10～15%; In filtering washing step, be prone to pour off, and these have acid water solubles discharge of wastewater and cause environmental pollution with waste water, in high with cost recovery; Recycle and can cause the constant product quality poor performance, its production process route is following:
Dry starch → milk of starch → medicament reaction → washing → dehydration → dry heat reaction (neutralization) → pulverize → sieve → weighing and bagging
This working method fixed capital facility investment expense is high, and the technological process of production is long, and the production cycle is long; Need 12～14 hours from ative starch to the acid treated starches finished product; Because need ative starch furnishing milk of starch, the equipment occupation space and the place of its liquid reaction are big, working continuously to possess two complete equipments; Particularly need the place and be used for environmental improvement, its supplementary material cost expiration is high.
Dry technology for production, be nitration mixture in milk of starch, filter; The wet cake that will have acid places moisture eliminator, and the washing that do not neutralize after reacting by heating is accomplished remains in the product water solubles; The difficult control level of response of this technology,, its production process route is following:
Dry starch → starch acid mixing breast → filtration → dry heat reaction (neutralization) → sieve → weighing and bagging
It has just shortened the liquid reaction time merely, but has prolonged solid state reaction and exsiccant time, needs 10～12 hours from dry starch to the acid treated starches finished product.Because this production technique essence is still a kind of semi-wet method production; In being filtered into the process of filter cake, still have the loss of a spot of microparticle starch and the water solubles; And have a certain amount of waste acid water, vapour, heat to need to administer, and recovery utilization rate is low, and control expense is high; Have redrying energy consumption expenditure, taking to reclaim or reusing not only increases the production cost expense but also exist quality of production control stabilization difficulty big.Also have a kind of dry technology for production: be with after the acid of SiO 2 powder carrier absorption with the dry starch hybrid reaction; Products obtained therefrom character is identical with wet processing; But the sulfate ion that is contained in the product, ash, acidity, transparency index are difficult to reach food sanitation standard, and its range of application is restricted.
The summary of the invention method
The technical problem that the present invention will solve provide that a kind of processing unit is simple, with short production cycle, cost is low and quality product is higher the preparation method of the pure dry method of acid treated starches.
The present invention adopts following technical scheme, and it comprises the steps, ative starch is put into the self-controlling electrothermal formula interlayer reactor drum that temperature reaches 120～180 ℃; Keep stirring; 0.07%～2.00% the concentration that in the above-mentioned self-controlling electrothermal formula of above-mentioned material gelatinization point forward direction interlayer reactor drum, adds weight and be ative starch weight is 0.6%～12.5% hydrochloric acid, nitric acid or sulphuric acid soln, and catalyzed reaction 2.5～3.5 hours makes pH value be neutrality; Sieve, get said acid treated starches.
The invention has the beneficial effects as follows that preparing method's of the present invention operational path is following:
Dry starch → nitration mixture reaction (neutralization) → sieve → weighing and bagging
The present invention can further improve the quality product of handling starch; Enlarge the range of application of product; Reduce production costs; Shorten the production cycle, simplify technical process, can shorten time of 3/4 of production cycle, can shorten 2/3 of the production cycle with semi-wet method and general dry technology for production comparison with existing wet process technique comparison.But the present invention produces the acid treated starches whole process is in closed state; The discharging of the no waste acid water or the water solubles; Need not carry out environmental improvement, the noise of equipment is low, because the automatic control degree of equipment is high; And technical matters route of the present invention is brief, easy and simple to handle, conveniently guarantees the stability of production quality control.Need not wash, it is dry not need secondary to repeat, no water solubles amount loss, and the product yield can reach more than 88%.Can be widely used in corn, cassava, yam and wheat starch and produce acid treated starches as ative starch, its product can be used for industries such as medicine, food, chemical industry, iodometry indicator.The processing starch everyway of producing reaches enterprise's inner quality standard and national ministerial standard.
Embodiment
Embodiment 1
Getting ative starch is tapioca(flour), and it is 138 ℃ self-controlling electrothermal formula interlayer reactor drum that ative starch is put into temperature, keeps stirring; 2.00% the concentration that in the above-mentioned self-controlling electrothermal formula of above-mentioned material gelatinization point forward direction interlayer reactor drum, adds weight and be ative starch weight is 0.6% hydrochloric acid soln, catalyzed reaction 3.5 hours, and the pH value is surveyed in sampling; When the pH value is neutral; Stopped reaction, material sieves, and gets said acid treated starches.
The material capacity of described self-controlling electrothermal formula interlayer reactor drum: 900 kilograms, produce 1500 tons per year, integral power per hour: 31.5KW, 50 rev/mins of mixing speed.
By the edible resulting acid treated starches of acid treated starches standard detection, detected result is:
Proterties: water insoluble, ethanol and ether material;
Solubleness:, be dissolved in entirely in the hot water of 65～78 degree greater than 1%;
Stability: 1% clear solution transparent after 12 hours (little muddy), sediment-free after 24 hours;
Other each item physical and chemical indexs: meet tapioca(flour) wet production acid treated starches (Zulkovsky starch) medicinal with the food grade standard, and reach and be superior to iodine dosis indicators volumetry AR grade standard.
Embodiment 2
Getting ative starch is W-Gum, and it is 120 ℃ self-controlling electrothermal formula interlayer reactor drum that ative starch is put into temperature, keeps stirring; 1.00% the concentration that in the above-mentioned self-controlling electrothermal formula of above-mentioned material gelatinization point forward direction interlayer reactor drum, adds weight and be ative starch weight is 10.0% salpeter solution, catalyzed reaction 3.5 hours, and the pH value is surveyed in sampling; When the pH value is neutral; Stopped reaction, material sieves, and gets said acid treated starches.
Described self-controlling electrothermal formula interlayer reactor drum is with embodiment 1.
By the edible resulting processing starch of acid treated starches standard detection, detected result is:
Proterties: water insoluble, ethanol and ether material;
Solubleness:, be dissolved in entirely in the hot water of 65～78 degree greater than 1%;
Stability: 1% clear solution transparent after 12 hours (little muddy), sediment-free after 24 hours;
Other each item physical and chemical indexs: meet W-Gum wet production acid treated starches (Zulkovsky starch) medicinal with the food grade standard, and reach and be superior to iodine dosis indicators volumetry AR grade standard.
Embodiment 3
Getting ative starch is yam starch, and it is 180 ℃ self-controlling electrothermal formula interlayer reactor drum that ative starch is put into temperature, keeps stirring; 0.07% the concentration that in the above-mentioned self-controlling electrothermal formula of above-mentioned material gelatinization point forward direction interlayer reactor drum, adds weight and be ative starch weight is 12.5% sulphuric acid soln, catalyzed reaction 2.5 hours, and the pH value is surveyed in sampling; When the pH value is neutral; Stopped reaction, material sieves, and gets said processing starch.
Described self-controlling electrothermal formula interlayer reactor drum is with embodiment 1.
By the edible resulting processing starch of acid treated starches standard detection, detected result is:
Proterties: water insoluble, ethanol and ether material;
Solubleness:, be dissolved in entirely in the hot water of 65～78 degree greater than 1%;
Stability: 1% clear solution transparent after 12 hours (little muddy), sediment-free after 24 hours;
Other each item physical and chemical indexs: meet yam starch wet production acid treated starches (Zulkovsky starch) medicinal with the food grade standard, and reach and be superior to iodine dosis indicators volumetry AR grade standard.
Claims (1)
1. the preparation method of the pure dry method of acid treated starches; It is characterized in that it comprises the steps, ative starch is put into the self-controlling electrothermal formula interlayer reactor drum that temperature reaches 120～180 ℃; Keep stirring; 0.07%～2.00% the concentration that in the above-mentioned self-controlling electrothermal formula of above-mentioned material gelatinization point forward direction interlayer reactor drum, adds weight and be ative starch weight is 0.6%～12.5% hydrochloric acid, nitric acid or sulphuric acid soln, and catalyzed reaction 2.5～3.5 hours makes pH value be neutrality; Sieve, get said acid treated starches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105305169A CN102453100A (en) | 2010-11-04 | 2010-11-04 | Pure dry preparation method of acid treated starch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105305169A CN102453100A (en) | 2010-11-04 | 2010-11-04 | Pure dry preparation method of acid treated starch |
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| CN102453100A true CN102453100A (en) | 2012-05-16 |
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| CN2010105305169A Pending CN102453100A (en) | 2010-11-04 | 2010-11-04 | Pure dry preparation method of acid treated starch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216399A (en) * | 2017-08-07 | 2017-09-29 | 东北林业大学 | The method that heat chemistry modified starch, preparation method and application heat chemistry modified starch prepare adhesive |
| CN107915784A (en) * | 2017-12-18 | 2018-04-17 | 河南工业大学 | A kind of intelligence dried starch homogeneously takes off branch polymerization |
| CN109535266A (en) * | 2018-11-14 | 2019-03-29 | 河南正弘药用辅料有限公司 | A kind of production method of Granular Cold-water-soluble Starches |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094732A (en) * | 1994-04-08 | 1994-11-09 | 廖俊云 | Drying process for producing acid modified starch |
-
2010
- 2010-11-04 CN CN2010105305169A patent/CN102453100A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094732A (en) * | 1994-04-08 | 1994-11-09 | 廖俊云 | Drying process for producing acid modified starch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216399A (en) * | 2017-08-07 | 2017-09-29 | 东北林业大学 | The method that heat chemistry modified starch, preparation method and application heat chemistry modified starch prepare adhesive |
| CN107216399B (en) * | 2017-08-07 | 2019-10-01 | 东北林业大学 | Heat chemistry modified starch and preparation method thereof |
| CN107915784A (en) * | 2017-12-18 | 2018-04-17 | 河南工业大学 | A kind of intelligence dried starch homogeneously takes off branch polymerization |
| CN109535266A (en) * | 2018-11-14 | 2019-03-29 | 河南正弘药用辅料有限公司 | A kind of production method of Granular Cold-water-soluble Starches |
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Application publication date: 20120516 |