CN101195692A - Diversification premixing method modified starch and producing method thereof - Google Patents
Diversification premixing method modified starch and producing method thereof Download PDFInfo
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Abstract
The invention discloses a diversification premixing modified starch and a relative production method, which premixes etherified-crosslink-esterified starch, esterified-esterified starch and esterified-crosslink starch which are produced independently in a certain ratio, to obtain the starch with good freeze stability, gel property, and water retention. The product supplies a new processing property for modified starch product, which can be applied for food, particularly for low-temperature meat product, to adhere, stuff and improve water retention. The invention has short production period, low energy consumption, simple operation and high product stability.
Description
Technical field
The present invention relates to a kind of modified starch and production method thereof.The modified starch that particularly can be used for food, weaving, papermaking or manufactured goods additive.
Technical background
Along with food, weaving, the development of papermaking or manufactured goods, China begins the suitability for industrialized production of modified starch the eighties from eighties of last century, its product substantially all is the modified starch product of a sex change, as Sumstar 190, acidified starch, acetate starch, phosphate ester starch, cross-linking starch, carboxymethyl starch, cationic starch, pre-gelatinized starch or the like, but when some industries and some high-end products of manufacturing, a simple modified starch product can't meet the demands, Gao Dang textiles for example, paper or food, it is low to require modified starch should have a gelatinization point, cohesive force is strong, stable viscosity, the characteristics of good fluidity, with filler particularly satin white have good consistency, make moisture-resistant mill property height, also to have very high cohesive force as paint adhesive, can make coating like this in conjunction with the good resistance water-based is firmly arranged.
So-called multicomponent modified starch is meant in same starch molecule not only to connect negatively charged ion, but also connect the starch of two or more reactive groups such as positively charged ion or nonionic.Purpose is to strengthen the performance of its certain aspect, and effect is more outstanding in actual applications to make it, and working conditions is wideer.Multicomponent modified starch is the novel starch derivative that grows up on common modified starch bases such as yin, yang, nonionic, it and common negatively charged ion, positively charged ion and the contrast of nonionic modified starch, and effect is more obvious.
Main multicomponent modified starch has crosslinked-esterification starch, etherificate-crosslinked-pre-gelatinized starch, crosslinked-carboxymethyl modified starch etc. at present, and it mainly is to connect different groups according to different needs at starch.We retrieve the content of some relevant diversification modified starches from open source literature, for example:
1, the preparation of the crosslinked cassava acetate starch of [autograph] hexanodioic acid and chemical institute of performance study [author] Wang Hong wild goose Wu Ping lattice [mechanism] He'nan University of Technology, Zhengzhou, Henan 450052[prints name] Henan chemical industry .2006,23 (4) .-17-19[digests] the crosslinked acetate starch of hexanodioic acid has fabulous ageing resistance, is used widely in the quickfrozen food industry again.This paper is raw material with the tapioca (flour), makees linking agent with hexanodioic acid divinyl ester, and vinyl acetate is made esterifying agent and prepared crosslinked acetate starch; Determined optimum reaction condition; And characteristics such as product gelatinization point, viscosity, freeze-thaw stability have been measured.The result shows that the starch of process cross-linked esterification has viscosity higher and freeze-thaw stability.
2, [autograph] crosslinked hydroxypropyl tapioca (flour) property research [author] Zou builds the commercial higher junior college in [1] Liu Yawei [2] Zheng Yan [3] [mechanism] [1] Henan, Zhengzhou, Henan 450045[2] the Food science .2006 of Guangxi University of He'nan University of Technology [3] [periodical name], 27 (9) .-79-83[digests] this experiment is raw material with the tapioca (flour), it with the propylene oxide respectively etherifying agent, Trisodium trimetaphosphate is the crosslinked hydroxypropyl tapioca (flour) that linking agent has prepared different degree of substitution and degree of crosslinking, and to its transparency, freeze-thaw stability, resistance to acid, high-temperature stability and rheological properties are analyzed, simultaneously its adding is studied the influence of noodles characteristic behind the bar, the result shows the transparency of sticking with paste liquid, freeze-thaw stability, resistance to acid, high thermal resistance and anti-shearing aspect all increase significantly, and adding after the noodles boil time and cooking loss aspect of the best to noodles has bigger improvement.
3, [autograph] crosslinked hydroxypropyl corn starch property research [author] Zou builds Li Lei [mechanism] Henan Department of Tourist Management of commercial higher junior college, 450045[prints name] grain and oil processing and food machinery .2006 (7) .-84-87[digest] this test is raw material with the W-Gum, it with the propylene oxide respectively etherifying agent, Trisodium trimetaphosphate is the crosslinked hydroxypropyl corn starch that linking agent has prepared different degree of substitution and degree of crosslinking, and to its transparency, freeze-thaw stability, resistance to acid, high-temperature stability and rheological properties are analyzed, simultaneously to after its adding noodles the influence of noodles characteristic being studied.The result shows, mucous transparency, freeze-thaw stability, resistance to acid, high thermal resistance and anti-shearing aspect all increase significantly, and these character make crosslinked hydroxypropyl corn starch at frozen product, acidic food with need the high temperature Application in Food that boils to have stronger competitive power.Add after the noodles boil time and cooking loss aspect of the best to noodles bigger improvement is arranged.
4, [application (patent) number] CN200310112684.6[applying date] the 2003.12.16[title] the gelatinization ternary compound modified starch and its production and application of a kind of etherificate-crosslinked-pre-gelatinization ternary compound modified starch and its production and application [application (patent right) people] a kind of etherificate of Southern Yangtze University's [summary]-crosslinked-in advance, belong to the starch denaturalization technical field.Product application of the present invention starch is carried out the method for etherificate, crosslinked, pre-gelatinization sex change simultaneously and makes, make it have the characteristic of etherificate, crosslinked, pre-gelatinized starch simultaneously.Product is used for peracid, high salt and frozen product in the thick stabilization foodstuffs industry, also can be used for the sizing agent of industry such as papermaking, weaving.Advantage of the present invention is that etherificate, three kinds of denaturation methods of crosslinked, pre-gelatinization are combined, the practicality of technological design science, and product performance are good, can partly substitute the higher pectin of present domestic price, xanthan gum etc., and are easy to utilize.[principal claim] claims 1, a kind of etherificate-crosslinked-pre-gelatinization ternary compound modified starch, it is characterized in that having used the preparation method who starch is carried out simultaneously etherificate, crosslinked, pre-gelatinization sex change, make it have the characteristic of etherification starch, cross-linking starch, pre-gelatinized starch simultaneously.2,, it is characterized in that also can be used for the sizing agent of industry such as papermaking, weaving as peracid, high salt and frozen product in the thick stabilization foodstuffs industry as the application of 1 described three former composite modified starchs.
5, [application (patent) number] CN200410036627.9[applying date] the 2004.04.23[title] a kind of composite modified starch and preparation method thereof [application (patent right) people] a kind of composite modified starch of Hao Qingyang [summary] and preparation method thereof, starch is starched with alcohol, water mixed liquid furnishing powder earlier, add alkali lye and linking agent again, make the reaction of starch and linking agent, add sodium chloroacetate and alkali lye then, carry out carboxymethylation reaction; Also can directly add sodium chloroacetate and linking agent in starch slurry, add alkali lye again, carry out carboxymethyl and crosslinking reaction, reaction is imported pre-gelatinization drying machine and is further reacted after finishing, and the drying and crushing packing obtains a kind of new modified starch.The present invention has integrated the advantage of methods such as pre-gelatinization, carboxymethyl etherification and crosslinked etherificate, and prepared composite modified starch has stable viscosity; Cold water solubles; Good water absorption, rehydration are strong; Anti-shearing force, anti-highly basic; Have higher freeze-stable and freeze-thaw stability; Not retrogradation; Characteristics such as good film-forming property.This method can produce full-bodied product by adjusting the quantity of linking agent, building whitewash and coating, petroleum drilling, toothpaste, ceramic making in use as tackiness agent; Produce low viscous product, as the agroforestry water-holding agent; Sanitary paper towel, diaper etc. are as absorption agent.[principal claim] principal claim: 1, a kind of composite modified starch, it is characterized in that it is made up of starch, linking agent, sodium hydroxide, sodium chloroacetate, alcohol, water, its basal component in the parts by weight proportioning is: 50～1000 parts in 50～1000 parts of water of 5～50 parts of alcohol of 1～20 part of sodium chloroacetate of 0.005～5 part of sodium hydroxide of 100 parts of linking agents of starch.
6, [application (patent) number] 02160795.8[applying date] the 2002.12.31[title] preparation method [application (patent right) people] Siping City Modistar Industry Co., Ltd.'s [summary] of pre-gelatinization hydroxypropyl Staragel 90V the present invention relates to be used for the modified starch field of foodstuffs industry, a kind of preparation method of pre-gelatinization hydroxypropyl Staragel 90V is disclosed, this method mainly comprises the preparation starch milk, alkalization, crosslinked, etherificate, neutralization, washing, dry, first product is transferred breast, pre-gelatinization, pulverize, screening, processing steps such as packing, pre-gelatinization hydroxypropyl Staragel 90V according to present method preparation, because cold water solubles and have high viscosity, not only effect is better than related products, and, the user does not need pre-treatment both can be directly used in food processing field, can be used as the thickening material of food cold machining process in food applications.
7, [piece of writing name] wheat crosslinked-preparation and property research [author] Miao Yongxia of the dual modified starch of carboxymethyl, party Leping [mechanism] He'nan University of Technology; Zhengzhou, chemical engineering institute of University Of Tianjin Henan [periodical name] grain and fodder industry, 2005 04 phases [summary] are raw material with the wheat starch, the employing Monochloro Acetic Acid is an etherifying agent, epoxy chloropropane is a linking agent, utilize Design-expert6.0.3 software, by the response surface Experiment Preparation crosslinked-the dual modified starch of carboxymethyl and obtain its preparation optimal conditions.To carboxymethyl starch, cross-linking starch, crosslinked-transparency, solubleness and the swelling power of the dual modified starch of carboxymethyl, freeze-thaw stability are studied.The result shows: and wheat is crosslinked-and the dual modified starch of carboxymethyl has the good characteristic of carboxymethyl starch and two kinds of single modified starches of cross-linking starch concurrently.
We can recognize from open source literature, multicomponent modified starch is at original Sumstar 190 at present, enzyme converted starch, cationic starch, phosphate ester starch, a lot of new products have been increased on hydroxypropylated starch and some the graft copolymerization starch, but the molecule of various starch varies, in some starch, more complicated chemical modification method such as oxidation, esterification, grafting is not easy to realize, this generally will just can realize sex change by the multistep operation, so those skilled in the art is according to different reactive groups, proportioning and processing condition, develop the product of each various tool property, it is more multi-functional that modified starch is had, for example except that as the additive for paper making, also can be used as weaving, industrial auxiliary agent such as food just more and more is subjected to scientific research person's attention.
Summary of the invention
The objective of the invention is to provide a kind of and can give several aspects of starch character, make multicomponent modified starch can take into account the suitability of multiple product by several complex denaturation methods.
The present invention is achieved in that
Product of the present invention is to be starting raw material with the starch slurry, with the A that produces separately: " etherificate-crosslinked-esterification " starch, B: " esterification-esterification " starch and C: " esterification-crosslinked " starch is in A: B: C=0.4-0.5: 0.3-0.4: 0.1-0.3 ratio premix, or A: B=0.3-0.4: 0.6-0.7 ratio premix, or A: C=0.5-0.7: 0.3-0.5 ratio premix, obtain starch at freeze-thaw stability, refrigerated stability, gelation, aspects such as water-retentivity have the product of better character, the technical parameter of described premix starch is: etherificate substitution value (DS): 0.03-0.08, esterification substitution value (DS): 0.01-0.03, peak viscosity 〉=2000BU, gelatinization point≤63.0 ℃ (reducing about 5 ℃) than ative starch, freeze-thaw stability 〉=3 time.
Technical scheme of the present invention is:
One, basic product
First kind of raw material: " etherificate-crosslinked-esterification " starch A
In ative starch slurry with salt and inhibitor, stirred 10-20 minute, the adjusting slurry pH value that adds dilute alkali again 9-11 adds linking agent a and etherifying agent, be warmed up to 40-50 ℃, reaction 5-10h keeps temperature of reaction constant, adds esterifying agent a then, continue reaction 1-2h at 45-50 ℃, reaction cools to below 30 ℃ after finishing, and regulates slurry pH value 6.0-6.5 with acid, gets finished product A through operations such as clear water dilution, swirler washing, dryings again.
Second kind of raw material: " esterification-esterification " starch B
Adjusting slurry pH value 8-10 (or adding inhibitor simultaneously) adds dilute alkali in the ative starch slurry, adding esterifying agent b again stirred 30 minutes, adding esterifying agent c reacts, temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour, cool to below 30 ℃ after reaction finishes, above-mentioned sex change slurry is added the acid pH value 6.0-6.5 that neutralizes, get finished product B through operations such as washing, dryings.
The third raw material: " esterification-crosslinked " starch C
Esterifying agent d and linking agent b were at first mixed stir process 24 hours, the solid linking agent is dissolved in fully is the transparence liquid drug in the liquid esterifying agent.In the ative starch slurry, add diluted alkaline adjusting slurry pH value 8.5-9.5, to mix medicine and adopt fed-batch mode to add in the farinaceous size, the joining day is controlled at 1-2h, simultaneously with diluted alkaline conditioned reaction pH value 8.5-9.5, temperature of reaction is controlled at below 35 ℃, and dosing finishes the back and stirred 10 minutes; Cool to below 30 ℃ after reaction finishes, above-mentioned sex change slurry is added the acid pH value 6.0-6.5 that neutralizes, get finished product C through operations such as washing, dryings.
Above-described starch adopts yam starch, tapioca (flour) or W-Gum.
Above-described inhibitor adopts sodium sulfate or yellow soda ash, and add-on is the 0.5-2% of over dry starch.
Above-described salt adopts sodium-chlor, and add-on is the 2-5% of over dry starch.
Above-described diluted alkaline adopts sodium hydroxide or potassium hydroxide aqueous solution.
Hydrochloric acid or aqueous sulfuric acid are adopted in above-described acid.
Above-described linking agent a adopts Trisodium trimetaphosphate, epoxy chloropropane, and add-on is the 0.2-1.5% of over dry starch.
Above-described linking agent b adopts hexanodioic acid or citric acid, and add-on is the 0.1-0.2% of over dry starch.
Above-described etherifying agent adopts propylene oxide, and add-on is the 2-5% of over dry starch.
Above-described esterifying agent a adopts tripoly phosphate sodium STPP, orthophosphoric acid salt or sodium polyphosphate, sodium tetrapolyphosphate for example, and five sodium polyphosphates, hexapolyphosphate sodium etc., add-on is the 1-4% of over dry starch.
Above-described esterifying agent b adopts tripoly phosphate sodium STPP, orthophosphoric acid salt or sodium polyphosphate, sodium tetrapolyphosphate for example, and five sodium polyphosphates, hexapolyphosphate sodium etc., add-on is the 1-4% of over dry starch.
Above-described esterifying agent c adopts vinyl acetate between to for plastic, and add-on is the 0.5-2% of over dry starch.
Above-described esterifying agent d adopts acetic acid or acetic anhydride, and add-on is the 1-3% of over dry starch.
Two, premix product
A: B: C=0.4-0.5: 0.3-0.4 in proportion: the 0.1-0.3 premix, the starch product that obtains having better freeze-thaw stability and gelation is applicable to low-temperature meat product.
A: B=0.3-0.4 in proportion: the 0.6-0.7 premix obtains having better elasticity and close-burning starch product is applicable to quick-frozen flour products such as quick-freezing boiled dumplings skin.
A: C=0.5-0.7 in proportion: the 0.3-0.5 premix, the starch product that obtains having better freeze-thaw stability, refrigerated stability and gelation is applicable to sour milk product.
Doing time in advance is no less than 20 minutes, is purpose to mix.
Premix temperature is a normal temperature.
Product of the present invention has remedied composite modified starch product deficiency in one aspect, good as the etherification starch freeze thawing, gelation is poor, characteristics such as the cross-linking starch gelation is good, freeze thawing difference are brought into play and complementary deficiency the advantage of various starch by premix, have reached the effect of synergy.
The present invention is applicable to the enterprise with modified starch working condition, adopts full wet process route and kneader or powder stirrer to produce, and production unit is not had particular requirement.
The present invention utilizes the complex denaturation of diversification and premix to handle to make that the modified starch product produces the suitable property of new processing, is applied to particularly low-temperature meat product production of food, play bonding, filling, freeze proof, strengthen better effect such as retentiveness.
Advantage of the present invention:
(1), adopt full wet chemistry denatured technology technology, with short production cycle, energy consumption is low, and is easy and simple to handle, the product stability height.
(2), the characteristics of utilizing institute to add pharmaceutical chemicals, rationally arrange reaction sequence, mutual catalyzed reaction, raising reaction efficiency.Under the effect of compound basic catalyst, improve etherificate and esterification efficient, obtain higher substitution degree.
(3), handle by premix and to make starch both have etherificate, esterification, group such as crosslinked, again with have the different in kind that these groups show with a part, embodied at aspects such as gelation, freeze-thaw stability and water-retentivitys.
Embodiment
Embodiment 1
The tapioca (flour) slurry, the degree of depth is 1000mm, and concentration of slurry is 18.5Be ', and starch-containing amount is 10 tons.1. in the tapioca (flour) slurry, add 300kgNaCl, stirred 20 minutes, hydro-oxidation sodium water solution adjusting slurry pH value 9-11, add 5-10kg Trisodium trimetaphosphate and 300kg propylene oxide, be warmed up to 45-50 ℃ and carry out reaction of degeneration 7-10h, add the 100-300kg tripoly phosphate sodium STPP then and continue reaction 1.5-2h, the farinaceous size temperature is dropped to below 30 ℃, with in the aqueous hydrochloric acid and slurry pH value 6.0-6.5, get finished product A through operations such as washings again.2. hydro-oxidation sodium water solution adjusting slurry pH value 8-9 in tapioca (flour) slurry, add the stirring of 200-400kg tripoly phosphate sodium STPP reacted in 30 minutes, adding the 100-200kg vinyl acetate between to for plastic again reacts, temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour, after reaction finishes with above-mentioned sex change slurry with the aqueous hydrochloric acid pH value 6.0 that neutralizes, get finished product B through operations such as washings.3. in the tapioca (flour) slurry, add sodium hydroxide or potassium hydroxide aqueous solution adjusting slurry pH value 8.5-9.5, adopt fed-batch mode to add in the starch slurry acetic anhydride and hexanodioic acid or citric acid mixing medicine, add dose 150-300kg, with aqueous sodium hydroxide solution conditioned reaction pH value 8.5-9.5, temperature of reaction is controlled at below 35 ℃, dosing finishes the back stirred 10 minutes, used in the aqueous hydrochloric acid and slurry pH value 5.0-6.5, got finished product C through operations such as washing, dryings.
Embodiment 2
Potato starch pulp, the degree of depth are 1200mm, and concentration of slurry is 18.5Be ', and starch-containing amount is 10 tons.1. in potato starch pulp, add 400kgNaCl, stirred 20 minutes, hydro-oxidation sodium water solution adjusting slurry pH value 9-10, add 12kg Trisodium trimetaphosphate and 400kg propylene oxide, be warmed up to 45-50 ℃ and carry out reaction of degeneration 7-8h, add the 200-400kg tripoly phosphate sodium STPP then and continue reaction 1.5h, the farinaceous size temperature is dropped to below 30 ℃, with in the aqueous sulfuric acid and slurry pH value 6.0-6.5, get finished product A through operations such as washings again.2. hydro-oxidation sodium water solution adjusting slurry pH value 8-9 in potato starch pulp, add the stirring of 200-400kg tripoly phosphate sodium STPP reacted in 30 minutes, adding the 150-200kg vinyl acetate between to for plastic again reacts, temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour, after reaction finishes with above-mentioned sex change slurry with hydrochloric acid or the aqueous sulfuric acid pH value 6.0 that neutralizes, get finished product B through operations such as washings.3. in potato starch pulp, add sodium hydroxide or potassium hydroxide aqueous solution adjusting slurry pH value 8.5-9, adopt fed-batch mode to add in the starch slurry with hexanodioic acid or citric acid mixing medicine the acetic anhydride of handling well, add dose 200-300kg, with aqueous sodium hydroxide solution conditioned reaction pH value 8.5-9, temperature of reaction is controlled at below 35 ℃, dosing finishes the back stirred 10 minutes, with in hydrochloric acid or the aqueous sulfuric acid and slurry pH value 5.0-6.5, got finished product C through operations such as washing, dryings.
Embodiment 3
The tapioca (flour) slurry, the degree of depth is 1000mm, and concentration of slurry is 18.5Be ', and starch-containing amount is 10 tons.1. in the tapioca (flour) slurry, add 200kg sodium-chlor and 200kg sodium sulfate, stirred 20 minutes, hydro-oxidation sodium or potassium hydroxide aqueous solution adjusting slurry pH value 9-10 add the 400kg propylene oxide, stirring at normal temperature 20 minutes, be warmed up to 45-50 ℃, add the 2-10kg epoxy chloropropane and carry out reaction of degeneration 7h, add the 100-300kg tripoly phosphate sodium STPP then and continue reaction 2h, the farinaceous size temperature is dropped to 30 ℃, with in the aqueous hydrochloric acid and slurry pH value 6.0-6.5, get finished product A through operations such as washings again.2. adding solid sodium carbonate 100-200kg in the tapioca (flour) slurry stirred 30 minutes, be warmed up to 40 ℃, add tripoly phosphate sodium STPP 50-200kg, stir reaction in 20 minutes, add the 100-300kg vinyl acetate between to for plastic again and react, temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour, after reaction finishes with above-mentioned sex change slurry with the aqueous hydrochloric acid pH value 6.0 that neutralizes, get finished product B through operations such as washings.3. in the tapioca (flour) slurry, add aqueous sodium hydroxide solution adjusting slurry pH value 8.5-9, adopt fed-batch mode to add in the starch slurry acetic anhydride and hexanodioic acid or citric acid mixing medicine, add dose 100-300kg, with aqueous sodium hydroxide solution conditioned reaction pH value 8.5-9, temperature of reaction is controlled at below 35 ℃, dosing finishes the back stirred 10 minutes, with in hydrochloric acid or the aqueous sulfuric acid and slurry pH value 5.0-6.5, got finished product C through operations such as washing, dryings.
Embodiment 4
Corn starch liquid, the degree of depth are 1000mm, and concentration of slurry is 18.5Be ', and starch-containing amount is 10 tons.1. in corn starch liquid, add 100-200kg sodium-chlor and 100-200kg sodium sulfate, stirred 20 minutes, hydro-oxidation sodium water solution adjusting slurry pH value 9-10 adds the 300kg propylene oxide, stirring at normal temperature 20 minutes, be warmed up to 48-50 ℃, add the 2-10kg epoxy chloropropane and carry out reaction of degeneration 10h, add the 100-200kg tripoly phosphate sodium STPP then and continue reaction 2h, the farinaceous size temperature is dropped to 30 ℃, with in the aqueous hydrochloric acid and slurry pH value 6.0-6.5, get finished product A through operations such as washings again.2. adding solid sodium carbonate 100-300kg in corn starch liquid stirred 30 minutes, be warmed up to 40 ℃, add hexapolyphosphate sodium 50-100kg, stir reaction in 20 minutes, add the 200kg vinyl acetate between to for plastic again and react, temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour, after reaction finishes with above-mentioned sex change slurry with the aqueous hydrochloric acid pH value 6.0 that neutralizes, get finished product B through operations such as washings.3. in corn starch liquid, add aqueous sodium hydroxide solution adjusting slurry pH value 8.5-9.5, adopt fed-batch mode to add in the starch slurry acetic acid and hexanodioic acid or citric acid mixing medicine, add dose 100-200kg, simultaneously with aqueous sodium hydroxide solution conditioned reaction pH value 8.5-9.5, temperature of reaction is controlled at below 35 ℃, dosing finishes the back stirred 10 minutes, with in hydrochloric acid or the aqueous sulfuric acid and slurry pH value 5.0-6.5, got finished product C through operations such as washing, dryings.
Premix embodiment 1
A: B: C=0.4-0.5: 0.3-0.4 in proportion: the 0.1-0.3 premix, the starch product that obtains having better freeze-thaw stability and gelation is applicable to low-temperature meat product.This premix starch has etherificate, esterification, crosslinked compatible mutually character, starch etherificate substitution value (DS): 0.041, and esterification substitution value (DS): 0.023, peak viscosity 2530BU, 59.5 ℃ of gelatinization points, freeze-thaw stability 〉=3 time.This starch has low gelatinization point, better freeze-thaw stability and gelation, can improve freeze-thaw stability, the water-retentivity of low-temperature meat product, play bonding, fill, strengthen effect such as retentiveness.Through contrast, has the better application performance than the organic phosphate starch that generally uses at present.
Premix embodiment 2
A: B=0.3-0.4 in proportion: the 0.6-0.7 premix, obtain having low gelatinization point, better elasticity and close-burning starch product, be applicable to goods such as quick-freezing boiled dumplings.This premix starch has the compatible mutually character of etherificate, esterification, starch etherificate substitution value (DS): 0.03, and esterification substitution value (DS): 0.027, peak viscosity 2230BU, 58.6 ℃ of gelatinization points, freeze-thaw stability 〉=3 time.This starch has low gelatinization point, better frost resistance and water-retentivity, and it is freezing not easy to crack that dumpling wrapper is had, and anti-boiling is transparent, characteristics such as good springiness.Through contrast, has the better application performance than the acetic acid esterification starch that generally uses at present.
Premix embodiment 3
A: C=0.5-0.7 in proportion: the 0.3-0.5 premix, the starch product that obtains having better freeze-thaw stability, refrigerated stability and gelation is applicable to sour milk product.This premix starch has etherificate, esterification, crosslinked mutually compatible character, starch etherificate substitution value (DS): 0.043, and esterification substitution value (DS): 0.018, peak viscosity 2170BU, 60.5 ℃ of gelatinization points, freeze-thaw stability 〉=3 time.This starch has low gelatinization point, better refrigerated stability and gelation, can improve stability in storage, the water-retentivity of sour milk product, plays thickening, increases solid content, strengthens retentiveness, effect such as prevent that whey from separating out.Through contrast, has the better application performance than the acetic ester cross-linking starch that generally uses at present.
Product of the present invention also can be used at weaving, papermaking, building materials or manufactured goods additive except being used for the foodstuffs industry.
Premix embodiment 4
B: C=0.7-0.8 in proportion: the 0.2-0.3 premix obtains having better elasticity and close-burning starch product is applicable to the building materials binding agent.This premix starch has esterification, crosslinked compatible mutually character, esterification substitution value (DS): 0.028, and peak viscosity 2230BU, 60.5 ℃ of gelatinization points.This starch product has low gelatinization point, viscosity higher, better cohesiveness and elasticity, uses after making glue, can replace all or part of formaldehyde, can improve timber or offset plate cohesive strength, makes it not easy to crack, and shortening set time; Glue is that raw material production belongs to health environment-friendly type product with starch.Through contrast, better application performance and environmental protection characteristic are arranged than the glutol glassware for drinking water that contains that generally uses at present.
Claims (6)
1. diversification premixing method modified starch, it is characterized in that: be the A that will produce separately: " etherificate-crosslinked-esterification " starch, B: " esterification-esterification " starch and C: " esterification-crosslinked " starch is in A: B: C=0.4-0.5: 0.3-0.4: 0.1-0.3 ratio premix, or A: B=0.3-0.4: 0.6-0.7 ratio premix, or A: C=0.5-0.7: the product that 0.3-0.5 ratio premix obtains.
2. diversification premixing method modified starch according to claim 1, it is characterized in that: the technical parameter of described premix starch product is: etherificate substitution value: 0.03-0.08, esterification substitution value: 0.01-0.03, peak viscosity 〉=2000BU, gelatinization point≤63.0 ℃, freeze-thaw stability 〉=3 time.
3. the production method of a diversification premixing method modified starch as claimed in claim 1, it is characterized in that: A: " etherificate-crosslinked-esterification " starch, B: " esterification-esterification " starch and C: " esterification-crosslinked " starch is done time in advance and is no less than 20 minutes, to mix is purpose, and premix temperature is a normal temperature.
4. diversification premixing method modified starch according to claim 1 is characterized in that: the preparation method of described " etherificate-crosslinked-esterification " starch A is:
In ative starch slurry with salt and inhibitor, stirred 10-20 minute, the adjusting slurry pH value that adds dilute alkali again 9-11 adds linking agent a and etherifying agent a, be warmed up to 40-50 ℃, reaction 5-10h keeps temperature of reaction constant, adds 100kg esterifying agent a then, continue reaction 1-2h at 45-50 ℃, cool to below 30 ℃ after reacting end, regulate slurry pH value 6.0-6.5, again through clear water dilution, washing, the dry finished product A that gets with acid;
Described linking agent a adopts Trisodium trimetaphosphate, epoxy chloropropane, and add-on is the 0.2-1.5% of over dry starch;
Described etherifying agent adopts propylene oxide, and add-on is the 2-5% of over dry starch;
Described inhibitor adopts sodium sulfate, yellow soda ash, and add-on is the 1-4% of over dry starch;
Described salt adopts sodium-chlor, and add-on is the 2-5% of over dry starch;
Described esterifying agent a adopts tripoly phosphate sodium STPP, orthophosphoric acid salt or sodium polyphosphate, and add-on is the 0.5-2% of over dry starch;
Hydrochloric acid or aqueous sulfuric acid are adopted in described acid;
Described diluted alkaline adopts sodium hydroxide or potassium hydroxide aqueous solution.
5. diversification premixing method modified starch according to claim 1 is characterized in that: the preparation method of described " esterification-esterification " starch B is:
The adjusting slurry pH value 8-10 that adds dilute alkali in ative starch slurry adds esterifying agent b stirring 30 minutes again, adds 100kg esterifying agent c and reacts, and temperature of reaction is controlled at 40-45 ℃, reaction times 1-2 hour; Or the adding inhibitor, add esterifying agent b again and react, after finishing, reaction cools to below 30 ℃, above-mentioned sex change slurry is added the acid pH value 6.0-6.5 that neutralizes, through washing, the dry finished product B that gets;
Described esterifying agent b adopts tripoly phosphate sodium STPP, orthophosphoric acid salt or sodium polyphosphate, and add-on is the 1-4% of over dry starch;
Described esterifying agent c adopts vinyl acetate between to for plastic, and add-on is the 0.5-2% of over dry starch;
Described inhibitor adopts sodium sulfate, yellow soda ash, and add-on is the 0.5-2% of over dry starch;
Described diluted alkaline adopts sodium hydroxide or potassium hydroxide aqueous solution;
Hydrochloric acid or aqueous sulfuric acid are adopted in described acid.
6. diversification premixing method modified starch according to claim 1 is characterized in that: the preparation method of described " esterification-crosslinked " starch C is:
Esterifying agent d and linking agent b were at first mixed stir process 24 hours, solid linking agent b is dissolved among the liquid esterifying agent d fully is the transparence liquid drug, in the ative starch slurry, add diluted alkaline adjusting slurry pH value 8.5-9.5, to mix medicine adopts fed-batch mode to add in the farinaceous size, joining day is controlled at 1-2h, with diluted alkaline conditioned reaction pH value 8.5-9.5, temperature of reaction is controlled at below 35 ℃, stirs 10 minutes simultaneously; Cool to below 30 ℃ after reaction finishes, above-mentioned sex change slurry is added the acid pH value 6.0-6.5 that neutralizes, through washing, the dry finished product C that gets;
Described linking agent b adopts hexanodioic acid or citric acid, and add-on is the 0.1-0.2% of over dry starch;
Described esterifying agent d adopts acetic acid or acetic anhydride, and add-on is the 1-3% of over dry starch;
Described diluted alkaline adopts sodium hydroxide or potassium hydroxide aqueous solution;
Hydrochloric acid or aqueous sulfuric acid are adopted in described acid.
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