CN105199005B - A kind of method for preparing high-performance starch slurry - Google Patents
A kind of method for preparing high-performance starch slurry Download PDFInfo
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- CN105199005B CN105199005B CN201510767223.5A CN201510767223A CN105199005B CN 105199005 B CN105199005 B CN 105199005B CN 201510767223 A CN201510767223 A CN 201510767223A CN 105199005 B CN105199005 B CN 105199005B
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Abstract
The invention discloses a kind of method for preparing high-performance starch slurry, by starch dispersion in water, the mass concentration of starch is 10% 40%, stir and be warming up to 40 60 DEG C, add the Q-enzyrnes of 30 150U/ grams of starch constant temperature stirring reaction 38 hours at 40 60 DEG C, filtering, centrifugal dehydration, the high-performance starch slurry by modified high side chain degree is obtained after drying.Compared with the starch of non-modified processing, its gelatinization point decreases, and slurries do not congeal at room temperature, has good mobility, to being greatly increased by the adhesion property of sizing line.
Description
Technical field
The present invention relates to a kind of method that bioanalysis prepares high-performance starch slurry, particularly one kind to utilize Q-enzyrne
The method for preparing high-performance starch slurry, belongs to textile process applied technical field.
Background technology
A kind of starch natural macromolecular very extensive as source, there is good biocompatibility and environment-friendly
Property.In textile industry, starch is a kind of very important warp sizing material, for improving the weavability of warp thread.Native starch
By the two kinds of molecular compositions of amylose and amylopectin, the former connects into linear polymer by α-Isosorbide-5-Nitrae glycosidic bond, the latter in α -1,
Side chain is formed by α -1,6 glycosidic bonds on 4 linear polymer main chains.The molecular structure difference of starch is caused in starch molecule, divided
Effect even aggregated structure is different between son, so as to produce different influences to the application performance of prepared slurry.Weaving slurry
Material requires good film-forming property, and flexible, wear-resisting, the anti-flexing fatigue of the serous coat formed, stretching property and elasticity are good by force, and require slurries pair
There is preferable adhesion property by pulp fibres.
The ratio of amylose and amylopectin has a significant effect to its sizing performance in starch size.Amylopectin content
Increase be advantageous to starch mashing off, reduce the gelatin phenomenon after farinaceous size cooling, improve the stability and mobility of slurries, together
When can increase serous coat toughness, improve adhesion property of the slurries to yarn.Ative starch is difficult to meet this requirement, so in order to change
The sizing performance of kind starch size, domestic and international research and utilization either physically or chemically carry out graft modification to starch and prepare grafting change
Property starch as spinning sizing agent, and once turn into research focus.Because existing various grafting modification methods are present
Grafting conditions are harsh, grafting process is difficult to control, the defects of being also easy to produce accessory substance, in particular by starch itself composition and structure
Limitation, the filming performance of product and to by pulp fibres adhesion property improve it is not notable, had a strong impact on its sizing application effect
Fruit.Current grafting starch also can not completely or at high proportion substitute and be difficult to biodegradable polyvinyl alcohol pulp.Therefore, seek
Looking for the preparation method of effectively gentle high-performance starch slurry has important application value.
Q-enzyrne is one kind of glycosyl transferase, is the key enzyme of synthesis amylopectin in amyloplaste.It can cut
α -1,4 glycosidic bonds in α -1,4 glucan straight chains donor (the straight chain area of amylose or amylopectin) are simultaneously catalyzed simultaneously to be cut
Under short chain and receptor chain (former chain or other chains) between form α -1,6 glycosidic bonds, so as to produce branch, improve the branch in ative starch
Chain starch proportion.With the increase of amylopectin content in system, the application performance of starch size also significantly improves therewith.
The content of the invention
The technical problem to be solved in the present invention is that ative starch is handled using the glycosyl transfer reaction of Q-enzyrne,
Increase the degree of branching of starch, improve the pulp stability of starch size, low temperature flow, to by the adhesiveness and film forming of pulp fibres
Property, prepare a kind of high-performance starch slurry.
In order to solve the above-mentioned technical problem, ative starch is dispersed in water, concentration 10%-40%, stirs and be warming up to
40-60 DEG C, a certain amount of Q-enzyrne is then added, the constant temperature stirring reaction 3-8 hours at 40-60 DEG C, filtering, centrifugation are de-
Water, the high-performance starch slurry by modified high side chain degree is obtained after drying.
Concrete technical scheme is：By starch dispersion in water, the mass concentration of starch is 10%-40%, stirs and heats up
To 40-60 DEG C, add 30-150U/ grams of starch Q-enzyrne at 40-60 DEG C constant temperature stirring reaction 3-8 hours, filtering,
Centrifugal dehydration, the high-performance starch slurry by modified high side chain degree is obtained after drying.
The present invention is handled starch using Q-enzyrne, improves the degree of branching of starch, is prepared a kind of with height
Starch the starch size of performance.The method has the characteristics that preparation condition is gentle, easy to operate, method is environmentally friendly and is easily controlled, and has
Very strong practicality.The present invention is remarkably improved the degree of branching of ative starch, and the degree of branching can typically improve 20%-30%.To preparing
The highly -branched degree starch of gained, which is prepared into farinaceous size and carries out test to its performance, to be shown, the starch phase with non-modified processing
Compare, its gelatinization point decreases, and slurries do not congeal at room temperature, has good mobility, to by the adhesion of sizing line
Performance is greatly increased.
Embodiment
Starch gelatinization performance is determined using RVA viscosimetries, the ultimate strength after rove starching is determined using rove method and is evaluated
Starch size is to by the adhesion property of sizing line, utilizing the degree of branching of spectrophotometry starch.
Embodiment 1 prepares the high performance cornstarch slurry of highly -branched degree using the branched enzyme of starch
Cornstarch is dispersed in water, mass concentration 30%, stirs and be warming up to 50 DEG C, 100U/ grams of corn of addition
The Q-enzyrne of starch, constant temperature stirring reaction 7 hours at 50 DEG C, filtering, centrifugal dehydration, obtained after drying by modified
Highly -branched cornstarch slurry.
After tested, the degree of branching of cornstarch brings up to 91% by 72% before modified；Complete gelatinization point is by ative starch
71 DEG C be reduced to 62 DEG C, viscosity brings up to 55mPas by 45mPas, and placing 24h under the conditions of 5-10 DEG C does not congeal, and does not analyse
Water, the pulp stability at 95 DEG C are improved to 96% by 85%；The adhesion of 13tex pure cotton rove is brought up to by 52.5N
68N, 29.5% is improved, 105.6N is brought up to by 85.3N to the adhesion of 14.5tex polyester-cotton blend rove, improves 23.8%.
Embodiment 2 prepares the high performance cornstarch slurry of highly -branched degree using the branched enzyme of starch
Cornstarch is dispersed in water, mass concentration 10%, stirs and be warming up to 40 DEG C, 30U/ grams of corn shallow lake of addition
The Q-enzyrne of powder, constant temperature stirring reaction 8 hours at 60 DEG C, filtering, centrifugal dehydration, obtained after drying by modified height
Branched cornstarch slurry.
After tested, the degree of branching of cornstarch brings up to 89% by 70% before modified；Gelatinization point is by the 71 of ative starch
61 DEG C DEG C are reduced to, viscosity brings up to 54mPas by 46mPas, and placing 24h under the conditions of 5-10 DEG C does not congeal, not bleed, and 95
Pulp stability at DEG C is improved to 93% by 84%；67N is brought up to by 53N to the adhesion of 13tex pure cotton rove, it is right
The adhesion of 14.5tex polyester-cotton blend rove brings up to 105N by 87.
Embodiment 3
Cornstarch is dispersed in water, mass concentration 40%, stirs and be warming up to 60 DEG C, 150U/ grams of corn of addition
The Q-enzyrne of starch, constant temperature stirring reaction 8 hours at 60 DEG C, filtering, centrifugal dehydration, obtained after drying by modified
Highly -branched cornstarch slurry.
After tested, the degree of branching of cornstarch brings up to 89% by 73% before modified；Gelatinization point is by the 71 of ative starch
60 DEG C DEG C are reduced to, viscosity brings up to 55mPas by 46mPas, and placing 24h under the conditions of 5-10 DEG C does not congeal, not bleed, and 95
Pulp stability at DEG C is improved to 94% by 86%；68N is brought up to by 54N to the adhesion of 13tex pure cotton rove, it is right
The adhesion of 14.5tex polyester-cotton blend rove brings up to 108N by 89.
Embodiment 4 prepares highly -branched degree high-performance tapioca slurry using the branched enzyme of starch
Tapioca is dispersed in water, concentration 40%, stirs and be warming up to 45 DEG C, the shallow lake of 80U/ grams of tapioca of addition
Powder branching enzyme, constant temperature stirring reaction 8 hours at 45 DEG C, filtering, centrifugal dehydration, the modification cassava of highly -branched degree is obtained after drying
Starch.The degree of branching brings up to 84.3% by 65.7% before modified, improves 28.3%.
The gelatinization point of tapioca and viscosity differences are smaller after before modified, and 12h is placed under the conditions of 5-10 DEG C and is not congealed, no
Bleed, the pulp stability at 95 DEG C are improved to 82% by 78%；The adhesion of 13tex pure cotton rove is brought up to by 56N
63N, 12.5% is improved, 95.6N is brought up to by 85.3N to the adhesion of 14.5tex polyester-cotton blend rove, improves 12%.
Tapioca changes less through the modified gelatinization point of highly -branched, but the peak viscosity of slurries, final value viscosity are more not
Modified starch is decreased, and rise value is declined slightly, and shows that the tapioca after degree of branching raising is advantageous to mashing off, slurries are stable
Property improve.
Embodiment 5 prepares the high performance konjak starch slurry of highly -branched degree using the branched enzyme of starch
Konjak starch is dispersed in water, concentration 35%, stirs and be warming up to 50 DEG C, 100U/ grams of konjak starch of addition
Q-enzyrne, constant temperature stirring reaction 8 hours at 50 DEG C, filtering, centrifugal dehydration, obtain propping up by modified height after drying
Change cornstarch slurry.
After tested, the degree of branching of konjak starch brings up to 78.1% by 63.5% before modified, improves 23%；After before modified
The gelatinization point and viscosity differences of konjak starch are smaller, and 16h is placed under the conditions of 5-10 DEG C and is not congealed, not bleed, the slurry at 95 DEG C
Liquid stability is improved to 85% by 79%；62N is brought up to by 52N to the adhesion of 13tex pure cotton rove, raising 19.2% is right
The adhesion of 14.5tex polyester-cotton blend rove brings up to 92.6N by 80.3N, improves 15.3%.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention, any to be familiar with this skill
The people of art, without departing from the spirit and scope of the present invention, it can all do various change and modification, therefore the protection model of the present invention
Enclose being defined of being defined by claims.
Claims (5)
- A kind of 1. method for preparing textile warp starching high-performance starch slurry, it is characterised in that using starch as raw material, addition Q-enzyrne, improve the degree of branching of starch；Methods described is by starch dispersion in water, and the mass concentration of starch is 10%- 40%, stir and be warming up to 40-60 DEG C, it is anti-to add the constant temperature stirring at 40-60 DEG C of the Q-enzyrne of 30-150U/ grams of starch Answer 3-8 hours, filtering, centrifugal dehydration, the high-performance starch slurry by modified high side chain degree is obtained after drying.
- 2. according to the method for claim 1, it is characterised in that the starch concentration 30%-40%.
- 3. according to the method for claim 1, it is characterised in that the temperature of the stirring heating is 40-55 DEG C.
- 4. the method described in claim 1, it is characterised in that the starch is cereal starch, potato starch, or cereal starch, potato Amyloid converted starch；Cereal starch includes cornstarch, wheaten starch；Potato starch include tapioca, sweet potato starch, Konjak starch, banana lily starch；Cereal starch, potato starch converted starch for acidified starch, oxidized starch, acetate starch, Hydroxypropul starch.
- 5. the method described in claim 4, it is characterised in that the starch is cornstarch.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107869060A (en) * | 2017-11-29 | 2018-04-03 | 苏州润弘贸易有限公司 | Spinning sizing agent |
| CN108047340A (en) * | 2017-12-11 | 2018-05-18 | 江南大学 | A kind of method of modifying for improving the slowly digestible energy of starch |
| CN107869061A (en) * | 2017-12-20 | 2018-04-03 | 苏州润弘贸易有限公司 | fluorescent type aqueous polyurethane slurry |
| CN107956128A (en) * | 2017-12-20 | 2018-04-24 | 苏州润弘贸易有限公司 | Fluorescence spinning sizing agent |
| CN115058466B (en) * | 2022-07-29 | 2023-08-25 | 江南大学 | Freeze-thawing stable biological modified starch and preparation method thereof |
| CN115895050A (en) * | 2022-11-17 | 2023-04-04 | 江南大学 | Method for directionally regulating and controlling performance of starch-based edible film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1946895A (en) * | 2004-04-01 | 2007-04-11 | 巴斯福植物科学有限公司 | Amylose starch products as sizing agents for textile yarns |
| CN103965802A (en) * | 2014-05-14 | 2014-08-06 | 郑州市中食农产品加工研究院 | Biochemical process preparation technology of high-viscosity starch adhesive |
| CN104411885A (en) * | 2012-06-29 | 2015-03-11 | 艾维贝合作公司 | Methods and means for coating paper by film coating |
| CN104544473A (en) * | 2014-12-08 | 2015-04-29 | 江南大学 | Biological modification method for inhibiting starch retrogradation |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1946895A (en) * | 2004-04-01 | 2007-04-11 | 巴斯福植物科学有限公司 | Amylose starch products as sizing agents for textile yarns |
| CN104411885A (en) * | 2012-06-29 | 2015-03-11 | 艾维贝合作公司 | Methods and means for coating paper by film coating |
| CN103965802A (en) * | 2014-05-14 | 2014-08-06 | 郑州市中食农产品加工研究院 | Biochemical process preparation technology of high-viscosity starch adhesive |
| CN104544473A (en) * | 2014-12-08 | 2015-04-29 | 江南大学 | Biological modification method for inhibiting starch retrogradation |
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