CN106892987A - A kind of method of dry process starch dissolvable in cold water - Google Patents
A kind of method of dry process starch dissolvable in cold water Download PDFInfo
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- CN106892987A CN106892987A CN201510967814.7A CN201510967814A CN106892987A CN 106892987 A CN106892987 A CN 106892987A CN 201510967814 A CN201510967814 A CN 201510967814A CN 106892987 A CN106892987 A CN 106892987A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/18—Oxidised starch
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Abstract
The invention provides a kind of method of dry process starch dissolvable in cold water, kneader is first warmed up to 30-80 DEG C by the method, ative starch is added after temperature stabilization, agitating device is opened and is adjusted rotating speed to 10-50r/min, be separately added into ethanol, NaOH solution, oxidizing agent solution and reacted；And pH adjusting agent regulation pH is added before reaction terminates, discharging obtains crude product；Crude product being washed again, being dry, pulverize, sieved, the starch dissolvable in cold water is obtained.Starch dissolvable in cold water is prepared using method of the present invention, it is not necessary to the harsh conditions such as HTHP, operating method is simple, overcomes wet method and prepares the inconvenience that starch dissolvable in cold water brings；Products obtained therefrom is not stratified, does not precipitate, good stability.
Description
Technical field
Formed sediment the invention belongs to converted starch preparing technical field, more particularly to a kind of dry process cold water solubles
The method of powder.
Background technology
Starch is the main depot polysaccharide of higher plant, is gathered by amylose and amylopectin Liang Zhong macromoleculars Portugal
Sugar composition.Ative starch just prepares various products as a kind of raw material in ancient times, in the food industry this polysaccharide
Macromolecular has good toughness and into colloidality, therefore is good food quality modifying agent and stabilizer.Form sediment
The application of powder, it is common that heating starch breast is allowed to be gelatinized, using resulting gelatinized corn starch, to avoid this heating
The trouble of gelatinization, is carrying out the research of starch dissolvable in cold water always in recent decades.
Granular starch dissolvable in cold water is primarily referred to as ative starch being modified into treatment and being obtained using the method for physics
To a kind of modified starch that paste can be dissolved into cold water.Mainly there are four kinds of preparation methods at present：1st, double fluid
Nozzle spray seasoning；2nd, high tcmpcrauire-higb pressure alcohol method；3rd, normal pressure polyol process；4th, second alcohol-alkali.But,
The requirement of double flowing nozzle spray drying process reaction condition is strictly, it is necessary to special double flowing nozzle, high equipment cost, need
HTHP is wanted to heat steam, power consumption is big；Although high tcmpcrauire-higb pressure alcohol method can substantially keep the graininess of ative starch
State, but production process needs HTHP, and the method may not apply to high amylopectin starch；Normal pressure polyol process
High temperature is needed in process of production, and now material is difficult flowing, conducts heat undesirable, is difficult to control the matter of product
Amount；Second alcohol-alkali can make starch while particle shape is kept, and reach optimal solvent swelling state, realize in paste
The integrality of change state starch granules, gelatinized corn starch viscosity is significantly improved, and performance is more stable, but starch be dissolved in it is cold
Being placed after water still can precipitate.
Therefore, in order to overcome many disadvantages of the prior art, seek a kind of to be suitably suitable to industrialized production
The new method for preparing starch dissolvable in cold water is the focus of those skilled in the art's research.
The content of the invention
In order to overcome shortcomings and deficiencies present in above-mentioned prior art, it is intended to height in production process can be solved
Temperature, the problem of high pressure, placement a period of time is not precipitated after starch dissolution is can guarantee that again, starch solution clarification
Appearance requirement.A kind of the first aspect of the present invention, there is provided method of dry process starch dissolvable in cold water, bag
Include following steps：
(1) preparation of NaOH and oxidant：Weigh a certain amount of NaOH and add deionized water to be configured to NaOH
Solution；Weigh a certain amount of oxidant and add deionized water to be configured to oxidizing agent solution；
(2) kneader is first warmed up to 30-80 DEG C, ative starch is added after temperature stabilization, opened agitating device and adjust
Section rotating speed is separately added into ethanol, NaOH solution, oxidizing agent solution and is reacted to 10-50r/min；And
Reaction adds pH adjusting agent regulation pH before terminating, discharging obtains crude product；Wherein, the ative starch is jade
Rice starch, tapioca and farina etc.；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product described cold
Water soluble starch.
Preferably, in above-mentioned preparation method, the ethanol is 5-10% with the mass percent of the ative starch,
The NaOH is 8-16%, the oxidant and the ative starch with the mass percent of the ative starch
Mass percent is 3-12%, and the pH adjusting agent is 1 with the mol ratio of the NaOH:1.
Preferably, in above-mentioned preparation method, the time reacted in the step (2) is 3-8 hours.
It is further preferred that the oxidant is selected from any one in urea, hydrogen peroxide or sodium hypochlorite.
It is further preferred that the pH adjusting agent is selected from any one in citric acid, acetic acid or hydrochloric acid.
It is further preferred that drying time lasting in the step (3) is 2-4h.
It is further preferred that the step (2) includes：PH is added to adjust in 15-45min before reaction terminates
Section agent.
Technical scheme provided by the present invention compared with prior art, has the following advantages that：
(1) present invention uses dry process starch dissolvable in cold water, and overcoming prior art can only be prepared by wet method
The inconvenience that starch dissolvable in cold water brings；
(2) present invention can just prepare starch dissolvable in cold water at normal temperatures and pressures, it is not necessary to severe in HTHP etc.
Starch dissolvable in cold water is produced under the conditions of quarter, operating method is simple；
(3) starch dissolvable in cold water prepared by the present invention be dissolved in after cold water place a period of time remain able to it is uniform molten
It is not stratified in Xie Shui, do not precipitate, good stability.
Specific embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following implementation
Mode.
In a first aspect, the invention provides a kind of method of dry process starch dissolvable in cold water, comprising the following steps：
(1) preparation of NaOH and oxidant：Weigh a certain amount of NaOH and add deionized water to be configured to NaOH
Solution；Weigh a certain amount of oxidant and add deionized water to be configured to oxidizing agent solution；
(2) kneader is first warmed up to 30-80 DEG C, ative starch is added after temperature stabilization, opened agitating device and adjust
Section rotating speed is separately added into ethanol, NaOH solution, oxidizing agent solution and is reacted to 10-50r/min；And
Reaction adds pH adjusting agent regulation pH before terminating, discharging obtains crude product；Wherein, the ative starch is jade
Rice starch, tapioca and farina etc.；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product described cold
Water soluble starch.
In a preferred embodiment, in above-mentioned preparation method, the quality hundred of the ethanol and the ative starch
Divide than being 5-10%, the NaOH is 8-16%, the oxidant with the mass percent of the ative starch
It is 3-12% with the mass percent of the ative starch, the mol ratio of the pH adjusting agent and the NaOH
It is 1:1.
In a preferred embodiment, in above-mentioned preparation method, reacted in the step (2) when
Between be 3-8 hours.
In a further preferred embodiment, the oxidant is selected from urea, hydrogen peroxide or sodium hypochlorite
Any one.
In a further preferred embodiment, the pH adjusting agent is selected from citric acid, acetic acid or hydrochloric acid
Any one.
In a further preferred embodiment, lasting drying time is 2-4h in the step (3).
In a further preferred embodiment, the step (2) includes：The 15-45min before reaction terminates
When add pH adjusting agent.
Step in the preparation method of following starch dissolvable in cold water is conventional method, the original unless otherwise instructed
Material can be obtained from open commercial sources unless otherwise instructed.
Embodiment 1
Each reactant ratio is as follows in the preparation method：
And follow the steps below：
(1) weigh NaOH by above quality and add deionized water to be configured to NaOH solution；By above quality weighing
Take sodium hypochlorite and add deionized water to be configured to liquor natrii hypochloritis；
(2) kneader is first warmed up to 30 DEG C, 300g cornstarch is added after temperature stabilization, open agitating device
And rotating speed is adjusted to after 50r/min, it is separately added into ethanol, NaOH solution and liquor natrii hypochloritis, question response
45min adds citric acid, total reaction time 8h before terminating；Discharging, obtains crude product；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product target product
Product.
Embodiment 2
Each reactant ratio is as follows in the preparation method：
And follow the steps below：
(1) weigh NaOH by above quality and add deionized water to be configured to NaOH solution；Weighed by above quality
H2O2Deionized water is added to be configured to H2O2Solution；
(2) kneader is first warmed up to 80 DEG C, 300g tapiocas is added after temperature stabilization, open agitating device
And rotating speed is adjusted to after 10r/min, it is separately added into ethanol, NaOH solution and H2O2Solution, question response terminates
Preceding 15min adds acetic acid, total reaction time 3h；Discharging, obtains crude product；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product target product
Product.
Embodiment 3
Each reactant ratio is as follows in the preparation method：
And follow the steps below：
(1) weigh NaOH by above quality and add deionized water to be configured to NaOH solution；By above quality weighing
Take urea and add deionized water to be configured to urea liquid；
(2) kneader is first warmed up to 45 DEG C, 300g farinas is added after temperature stabilization, open stirring dress
Rotating speed is put and adjusted to after 30r/min, ethanol, NaOH solution and urea liquid, question response knot is separately added into
30min adds hydrochloric acid, total reaction time 4h before beam；Discharging, obtains crude product；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product target product
Product.
Embodiment 4
Each reactant ratio is as follows in the preparation method：
And follow the steps below：
(1) weigh NaOH by above quality and add deionized water to be configured to NaOH solution；By above quality weighing
Take sodium hypochlorite and add deionized water to be configured to liquor natrii hypochloritis；
(2) kneader is first warmed up to 60 DEG C, 300g cornstarch is added after temperature stabilization, open agitating device
And rotating speed is adjusted to after 40r/min, it is separately added into ethanol, NaOH solution and liquor natrii hypochloritis, question response
30min adds acetic acid, total reaction time 6h before terminating；Discharging, obtains crude product；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product target product
Product.
Comparative example
The preparation method of control sample：Detachable reactor is placed in the water-bath of constant temperature, is added a certain amount of
Cornstarch and ethanol are mixed into dispersed starch suspension, start electric mixer, reach reaction temperature
When, piece alkali, oxidant and PH conditioning agents are separately added into up to the reaction time terminates, by starch after stopping reacting
Reaction solution is vacuumized, and is repeatedly cleaned with ethanol, product is placed in 70-80 DEG C of baking oven and is dried 1-2h,
Then dried product is placed in pulverizer and is crushed, cross 100 mesh sieves；Wherein, it is each by changing
The proportioning of reactant, is obtained control sample 1 and control sample 2.
Starch dissolvable in cold water prepared by the present invention and control sample are carried out into dissolubility contrasting detection respectively, its detection
Data are as shown in table 1 below：
Table 1
Specific embodiment of the invention has been described in detail above, but it is intended only as example, and the present invention is simultaneously
It is not restricted to particular embodiments described above.To those skilled in the art, it is any that the present invention is carried out
Equivalent modifications and substitute also all among scope of the invention.Therefore, spirit of the invention and model are not being departed from
Enclose lower made impartial conversion and change, all should be contained within the scope of the invention.
Claims (7)
1. a kind of method of dry process starch dissolvable in cold water, comprises the following steps：
(1) preparation of NaOH and oxidant：Weigh a certain amount of NaOH and add deionized water to be configured to NaOH
Solution；Weigh a certain amount of oxidant and add deionized water to be configured to oxidizing agent solution；
(2) kneader is first warmed up to 30-80 DEG C, ative starch is added after temperature stabilization, opened agitating device and adjust
Section rotating speed is separately added into ethanol, NaOH solution, oxidizing agent solution and is reacted to 10-50r/min；And
Reaction adds pH adjusting agent regulation pH before terminating, discharging obtains crude product；
(3) crude product is placed in ethanol and cleans removal foreign ion and unreacted monomer, 70-80 is put into afterwards
DEG C baking oven in dry, and guarantee system water content≤14%；
(4) it is last, dried product is crushed by pulverizer and 100 mesh sieves are crossed；Pack, obtains final product described cold
Water soluble starch.
2. the method for dry process starch dissolvable in cold water according to claim 1, it is characterised in that the second
The mass percent of alcohol and the ative starch is 5-10%, the quality percentage of the NaOH and the ative starch
Than being 8-16%, the oxidant is 3-12%, the pH adjusting agent with the mass percent of the ative starch
It is 1 with the mol ratio of the NaOH:1.
3. the method for dry process starch dissolvable in cold water according to claim 1, it is characterised in that the step
Suddenly the time reacted in (2) is 3-8 hours.
4. the method for the dry process starch dissolvable in cold water according to any one of claim 1-3, its feature exists
In the oxidant is selected from any one in urea, hydrogen peroxide or sodium hypochlorite.
5. the method for the dry process starch dissolvable in cold water according to any one of claim 1-3, its feature exists
In the pH adjusting agent is selected from any one in citric acid, acetic acid or hydrochloric acid.
6. the method for the dry process starch dissolvable in cold water according to any one of claim 1-3, its feature exists
In lasting drying time is 2-4h in the step (3).
7. the method for the dry process starch dissolvable in cold water according to any one of claim 1-3, its feature exists
In the step (2) includes：PH adjusting agent is added in 15-45min before reaction terminates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510967814.7A CN106892987A (en) | 2015-12-21 | 2015-12-21 | A kind of method of dry process starch dissolvable in cold water |
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| CN201510967814.7A CN106892987A (en) | 2015-12-21 | 2015-12-21 | A kind of method of dry process starch dissolvable in cold water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760010A (en) * | 2019-11-15 | 2020-02-07 | 江南大学 | Method for preparing V-shaped cold water soluble starch by alcohol water extrusion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226560A (en) * | 1998-12-29 | 1999-08-25 | 国内贸易部谷物油脂化学研究所 | Granular starch dissolvable in cold water and preparation thereof |
| CN1807462A (en) * | 2005-12-08 | 2006-07-26 | 中国科学院长春应用化学研究所 | Cool water soluble starch preparation method |
| CN101863993A (en) * | 2010-06-13 | 2010-10-20 | 枣庄林美发展有限公司 | Preparation method of sodium carboxymethyl starch with high substitution degree |
| CN101974093A (en) * | 2010-09-29 | 2011-02-16 | 广西明阳生化科技股份有限公司 | Production method for preparing low-pasting-temperature starch in cold water |
| CN102408487A (en) * | 2011-09-22 | 2012-04-11 | 哈尔滨工业大学 | Preparation method of granular cold water soluble starch |
-
2015
- 2015-12-21 CN CN201510967814.7A patent/CN106892987A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226560A (en) * | 1998-12-29 | 1999-08-25 | 国内贸易部谷物油脂化学研究所 | Granular starch dissolvable in cold water and preparation thereof |
| CN1807462A (en) * | 2005-12-08 | 2006-07-26 | 中国科学院长春应用化学研究所 | Cool water soluble starch preparation method |
| CN101863993A (en) * | 2010-06-13 | 2010-10-20 | 枣庄林美发展有限公司 | Preparation method of sodium carboxymethyl starch with high substitution degree |
| CN101974093A (en) * | 2010-09-29 | 2011-02-16 | 广西明阳生化科技股份有限公司 | Production method for preparing low-pasting-temperature starch in cold water |
| CN102408487A (en) * | 2011-09-22 | 2012-04-11 | 哈尔滨工业大学 | Preparation method of granular cold water soluble starch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760010A (en) * | 2019-11-15 | 2020-02-07 | 江南大学 | Method for preparing V-shaped cold water soluble starch by alcohol water extrusion |
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Application publication date: 20170627 |