CN102690360A - Preparation method of corn starch - Google Patents
Preparation method of corn starch Download PDFInfo
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- CN102690360A CN102690360A CN2011100711175A CN201110071117A CN102690360A CN 102690360 A CN102690360 A CN 102690360A CN 2011100711175 A CN2011100711175 A CN 2011100711175A CN 201110071117 A CN201110071117 A CN 201110071117A CN 102690360 A CN102690360 A CN 102690360A
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Abstract
A preparation method of corn starch. The method includes the steps of: soaking niblets; crushing the soaked niblets; separating out germs; grinding niblet tissues containing corn bran and endosperm after degerming; separating out fiber; separating the obtained crude starch milk to obtain gluten water and starch milk; and washing the starch milk. A treatment method of gluten water comprises concentration of the gluten water. The concentration method of gluten water includes the steps of: (1) carrying out a first condensation on gluten water to obtain a first concentrated phase, wherein conditions of the first condensation enable an obtained first water phase to contain less than 0.3 wt% of solid containing protein; and (2) carrying out a second condensation on the first concentrated phase to obtain a second concentrated phase and a second water phase, wherein conditions of the second condensation enable the second concentrated phase to contain more than 10 wt% of solid containing protein. The second concentrated phase obtained by the method of the invention has similar or higher concentration compared with that of a concentrate obtained by a prior art; and water quality of the obtained first water phase is superior.
Description
Technical field
The present invention relates to a kind of preparation method of W-Gum.
Background technology
The leaching process of starch is the chief component separating process of corn grain, and the separation of each integral part of corn grain has two kinds of dry method and wet methods, and lock out operation main be to grind, therefore, the branch of dry grinding and wet-milling is arranged.
Wet-milling is the general technology of current corn starch industry, is mainly the corn process fragmentation of dipping back, takes off embryo, correct grinding and screening, to tell plumule, fibrous residue, makes the process of rough milk of starch.After starch wearable riddler preface is extracted; The gained milk of starch still is a coarse starch milk, still contains a large amount of proteinaceous solid substances and soluble substance, and the concentration of powder slurry is also rarer; Need make with extra care and concentrate, for processing and deep processing at last provides purified smart milk of starch.
The purified method is to utilize the principle of spinning, and coarse starch milk is separated, and tells light phase and heavy phase; Light mutually for containing the water of proteinaceous solid substance, i.e. seitan water, heavy phase is a milk of starch; Remove soluble substance remaining in the milk of starch with the pure water washing again, promptly get smart milk of starch.And isolated seitan water utilizes the method for spinning to concentrate once more, obtains enriched material and process water, after enriched material is dehydrated, promptly gets the gluten protein powder.Separate the process water that obtains, directly cyclically utilizing is in the washing process of technique for soaking corn or milk of starch.
But; Adopt and to utilize the method for spinning to carry out the not enough so that proteinaceous solid substance of spissated technology once more to seitan water fully to separate among the preparation method of W-Gum of prior art; Separation efficiency is lower, causes the productive rate of gluten protein powder not high, and separates in the process water obtain and still contain a certain amount of proteinaceous solid substance; Not only can cause the productive rate of gluten protein powder to reduce; If after the direct cyclically utilizing of process water is in technique for soaking corn and plumule, the fibre washing technique, the immersion effect of corn and quality product also can variation, and influence the quality of smart milk of starch.
Summary of the invention
It is high and with after the direct cyclically utilizing of process water is in technique for soaking corn and plumule, the fibre washing technique to the objective of the invention is to overcome the productive rate of the gluten protein powder that the treatment process of the seitan water among the preparation method of the W-Gum that adopts prior art obtains; The immersion effect of corn and quality product variation and influence the defective of the quality of smart milk of starch; Provide a kind of and can either improve gluten protein powder productive rate and can be directly the process water reuse can be improved corn soaking effect and cyclically utilizing to the plumule of process water cyclically utilizing to technique for soaking corn, the starch washing effect of fibre washing technique again, improve the preparation method of W-Gum of the quality of smart milk of starch.
Contriver of the present invention finds, adopts the W-Gum preparation technology of prior art to utilize the method for spinning not enough so that proteinaceous solid substance is fully separated once more to seitan water, and separation efficiency is lower; The content of the proteinaceous solid substance in the enriched material that therefore obtains is not high; Cause the productive rate of gluten protein powder not high, in addition, also contain a large amount of solid substances in the process water that obtains after concentrating; If directly with the direct cyclically utilizing of process water to technique for soaking corn; Because the protein content in the process water is higher, therefore can't fully the soluble protein in the corn be soaked out and dissolve in the water, and influence follow-up separating technology; Equally; The direct cyclically utilizing of the process water that prior art obtains in plumule, the fibre washing technique after, also can't fully the soluble substance thorough washing in plumule, the fiber be come out, and can influence the quality of product.
To achieve these goals, the invention provides a kind of preparation method of W-Gum, this method comprises soaks corn grain; The corn grain that will pass through immersion carries out fragmentation, isolates plumule, and the corn grain tissue that contains maize peel and endosperm that will take off behind the embryo grinds; Isolate fiber; The coarse starch milk that obtains separated obtaining seitan water and milk of starch, and milk of starch is washed, wherein; The treatment process of said seitan water comprises seitan water concentrated, and said the spissated method of seitan water comprised:
(1) seitan water is carried out once concentration, obtain first concentrated phase and first water, the condition of once concentration makes the content of the proteinaceous solid substance of first aqueous phase that obtains less than 0.3 weight %;
(2) first concentrated phase is carried out secondary concentration, obtain second concentrated phase and second water, it is more than the 10 weight % that the condition of secondary concentration makes the content of proteinaceous solid substance in second concentrated phase that obtains.
In the preparation method of W-Gum provided by the invention; Adopt the method for secondary concentration, earlier seitan water is carried out once concentration, the content of the proteinaceous solid substance of first aqueous phase that control obtains is lower; Then; First concentrated phase is carried out secondary concentration, and the content of proteinaceous solid substance is higher in second concentrated phase that control obtains, thereby realizes effective separation of proteinaceous solid substance; After the proteinaceous solid substance in this second concentrated phase being separated and dehydrate, reach the purpose of the productive rate that improves the gluten protein powder greatly.Simultaneously; The content of the proteinaceous solid substance of first aqueous phase that control obtains is lower; First water that obtains is reached directly get back to the requirement that process system uses; That is, with said first water once more reuse circulation corn is soaked and plumule, fiber is washed, can reach basically and soak with fresh water and the effect of washing.The deficiency of the technology that the method that has remedied prior art is handled seitan water so that proteinaceous solid substance can fully separate.Compare with the method for the once concentration of prior art; The product that method of the present invention obtains the i.e. concentration of the enriched material that obtains of second concentrated phase (dense seitan) and prior art is suitable; Even it is higher; And the water quality of first water that obtains obviously is superior to the water that the once concentration of prior art obtains, and it is less relatively to carry out the volume of second water of secondary treatment, also handles more easily.
Embodiment
According to the present invention, the preparation method of said W-Gum comprises corn grain is soaked that the corn grain that will pass through immersion carries out fragmentation; Isolate plumule, the corn grain tissue that contains maize peel and endosperm that will take off behind the embryo grinds, and isolates fiber; The coarse starch milk that obtains separated obtaining seitan water and milk of starch, and milk of starch is washed, wherein; The treatment process of said seitan water comprises seitan water concentrated, and said the spissated method of seitan water comprised:
(1) seitan water is carried out once concentration, obtain first concentrated phase and first water, the condition of once concentration makes the content of the proteinaceous solid substance of first aqueous phase that obtains less than 0.3 weight %;
(2) first concentrated phase is carried out secondary concentration, obtain second concentrated phase and second water, it is more than the 10 weight % that the condition of secondary concentration makes the content of proteinaceous solid substance in second concentrated phase that obtains.
Under the preferable case, in step (1), it is 0.1-0.3 weight % that the condition of once concentration makes the content of the proteinaceous solid substance of first aqueous phase that obtains; In step (2), the condition of secondary concentration makes the content of proteinaceous solid substance in second concentrated phase that obtains reach 10-12 weight %.
Contriver of the present invention finds; With adopt once concentration among the preparation technology of the W-Gum of prior art after promptly obtain enriched material and process water method compare; When seitan water is carried out once concentration; The content of the proteinaceous solid substance of first aqueous phase that control obtains is preferably 0.1-0.3 weight % less than 0.3 weight %, can guarantee earlier that promptly first aqueous phase only contains a spot of proteinaceous solid substance; Then; When first concentrated phase that obtains after the once concentration was carried out secondary concentration, the content of proteinaceous solid substance was preferably 10-12 weight % in second concentrated phase that control obtains more than 10 weight %; Contain a large amount of proteinaceous solid substances in second concentrated phase that has promptly guaranteed again to obtain; That is to say, adopt method of the present invention that seitan water is concentrated after, can obtain simultaneously quality content higher, proteinaceous solid substance less can direct reuse water; And need not again the water that obtains to be carried out subsequent disposal, obtain directly carrying out the higher concentrated phase of proteinaceous solid content of next step gluten protein powder preparation simultaneously.
According to the present invention; The content of the proteinaceous solid substance of first aqueous phase that control obtains is less than 0.3 weight %; Be preferably 0.1-0.3 weight %; The concentration ratio of first concentrated phase that can obtain during once concentration through control, the concentration ratio of said first concentrated phase is the feed volume of once concentration seitan water and the ratio of the first concentrated phase volume; The concentration of proteinaceous solid substance is lower in first concentrated phase, so promptly can guarantee the first aqueous phase low percentages of protein, and therefore, under the preferable case, the concentration ratio of first concentrated phase can be 2-3: 1, and 2.3-2.8 more preferably: 1.Vice versa; The content of proteinaceous solid substance is more than 10 weight % in second concentrated phase that control obtains; Be preferably 10-12 weight %; The concentration ratio of second concentrated phase that can obtain during secondary concentration through control, the feed volume of said secondary concentration first concentrated phase and the ratio of the second concentrated phase volume; The concentration of the proteinaceous solid substance of second aqueous phase is higher, can guarantee that promptly protein contnt is higher in second concentrated phase, and therefore, under the preferable case, the concentration ratio of second concentrated phase can be 3-4: 1, and 3.3-3.7 more preferably: 1.
According to the present invention, the spissated method of seitan water can for example, be utilized the principle of spinning for various concentrated modes well known in the art, adopt separating machine that seitan water is concentrated, enriched material flows out from underflow, and stream flows out process water from the top.Therefore, the method for the invention preferably adopts the method for spinning to carry out said once concentration and said secondary concentration.
According to the present invention; Spissated condition generally comprises the rotating speed of spinning and the temperature of feed rate and spinning etc.; The equal broad of the adjustable extent of above-mentioned condition; Also promptly, the condition of once concentration is as long as guarantee the proteinaceous solid content of first aqueous phase, and the condition of preferred once concentration gets final product the concentration ratio of the concentrated phase of winning in preferred range of the present invention; Simultaneously, the condition of secondary concentration is as long as guarantee the content of proteinaceous solid substance in second concentrated phase, and the condition of preferred secondary concentration makes the concentration ratio of second concentrated phase in preferred range of the present invention, get final product.Because the size of different centrifugal separation equipments, diameter difference, rotating speed are also just different, therefore, can select suitable equipment according to the needs of reality, its rotating speed has also confirmed that with regard to corresponding the while also just can be selected suitable inlet amount according to actual needs.The temperature of spinning generally can be 35-45 ℃.
The method of the proteinaceous solid substance in said separation second concentrated phase can adopt ordinary method known in those skilled in the art, for example, can carry out solid-liquid separation or directly carry out filtering separation through whizzer.Its concrete operation method and condition are conventionally known to one of skill in the art, here repeat no more.For example; In embodiment of the present invention, can adopt plate-and-frame filter press to filter, filtering condition comprises sheet frame veneer model 125cm * 125cm, sheet frame MWP 0.4Mpa; Veneer filter cloth filtration area is generally 1.5 square metres, 758 model filter clothes.
According to the present invention, this method also comprises isolated proteinaceous solid substance from second concentrated phase and the step that dehydrates.
Said method that dehydrates and condition all can adopt method well known in the art and condition to carry out.For example, the exsiccant mode can be seasoning, forced air drying, the drying mode of various routines such as vacuum-drying.Said exsiccant condition can comprise that drying temperature is more than 100 ℃, as 100-150 ℃; Can be 0.5-1.5 hour time of drying.
In the present invention, the light water that contains proteinaceous solid substance matter mutually that obtains after referring to the corn coarse starch milk separated of said seitan water.
According to the present invention, the method that corn grain is soaked can adopt the method for well known to a person skilled in the art, for example, under 50-55 ℃, is that the sulfurous acid aqueous solution of 0.1-0.5 weight % contacts 48-52 hour with corn particle and concentration.Can make its each integral part loose with sulfurous acid soaking corn grain; Weaken mutual contact; Sulfurous acid can also destroy the protein net, makes the semipermeable partition of corn grain epidermis become permeable membrane, quickens and promote to permeate and diffusion; Make a large amount of water absorption and swellings of corn grain, softening, the great amount of soluble protein dissolution can further be processed into steeping water in soak solution.
According to the present invention, the corn grain that will pass through immersion takes off embryo, and the method for isolating plumule also can be carried out according to the method for well known to a person skilled in the art; For example, utilize corn degerming mill (TCM920), make the corn grain that gets into degerming mill under action of centrifugal force, get into the moving of band double wedge and decide between tooth plate; Because two dishes are done rotation relatively; And close outside dredging in recessed tooth is on dish, maize germ, scurf and endosperm are because of the fragmentation in various degree of the different quilts of physical property, and be separated from one another.Because the specific density of plumule and rest part is different, under action of centrifugal force, the free plumule is separated.
According to the present invention; The corn grain tissue that contains maize peel and endosperm that will take off behind the embryo grinds; Isolate the method for fiber and also can carry out, for example, utilize the impact grinding of pin type to grind according to the method for well known to a person skilled in the art; At moving pin that receives high speed rotating and the fixed strong bump in repeated multiple times ground of deciding pin, most starch and fiber get loose and dissociate out.The thickness slag ratio generally can be 2.5-3: 1.Though the starch through after grinding has been unbound state, but still mixes with fibrous residue, owing to varying in size of several kinds of material particles; The screening plant that therefore, can utilize different apertures with fiber by separating in the farinaceous size, in said farinaceous size; The size of starch granules is generally the 3-30 micron; The particle size of fine-fibered is generally more than 65 microns in the fibrous residue, and the robust fibre slag becomes big sheet, and the seitan particle size is generally the 1-2 micron.Said screening plant can be various screening plants, for example, and trommel, oscillating flat sieve, centrifugal screen etc.
According to the present invention, the coarse starch milk that obtains separated obtaining seitan water and milk of starch, and the method that milk of starch washs can be carried out for method well known in the art.For example, milk of starch and the isolating principle of seitan mainly utilize specific density and the particle size of these two kinds of materials different and separate, and for example, can adopt settling process or centrifuging to separate.
To further describe in detail the present invention through specific embodiment below, following examples only are used to explain the present invention, but are not used for limiting scope of the present invention.
Adopt disc separator that seitan water is concentrated perhaps among the following embodiment and carry out solid-liquid separation, concentrated phase flows out from underflow, and stream flows out water from the top; The model of used disc-type separating centrifuge is SDA260.
The measuring method of the concentration of the proteinaceous solid substance of aqueous phase that obtains after seitan water is concentrated is an Oven Method.
Adopt GB/T 5009.5-1985 to measure with the protein content in the feed that obtains behind the filtration cakes torrefaction (butt with feed is a benchmark).
Embodiment 1
Present embodiment is used to explain the preparation method of W-Gum provided by the invention.
(1) raw materials pretreatment
Maize raw material (water cut 14 weight %) through chapelet carry get into successively receiving sieve, tramp iron separator, plane rotation cleaning screen, except that cleaning sections such as stone, magnetic separation;
(2) soak
To purify and remove infusion system with the waterpower conveying after the back corn measures, and carry out adverse current with the sulfurous acid aqueous solution (mass percent concentration is 0.35 weight %) and soak.Soaking filling is 10, in 10 steeping tanks, adds 50 tons of maize raw materials after the above-mentioned purification respectively, and wherein, the steeping tank series connection is communicated with successively, and the time of immersion is 48 hours, and the temperature of immersion is 50 ± 2 ℃;
(3) take off embryo
Corn after soaking is got into the wet corn hopper by the wet corn transferpump through rockover remover; Get into the one-level degerming mill again; Corn is broken into the 4-6 lobe; Contain shaping corn amount and be no more than 1 weight %, and tell the plumule of the 75-89 weight % of plumule total amount, discharge the starch of the 20-25 weight % of total starch content simultaneously;
Corn after the fragmentation is pumped to the plumule primary cyclone with plumule, and the effusive plumule in separator top removes washing system, and the underflow thing gets into the secondary degerming mill; Corn is broken for the 10-12 lobe; In this slurry, do not contain whole kernel corn, the plumule that is in bonding state is no more than 0.3 weight %, and the slurry of process secondary breaking is pumped into secondary plumule cyclone separator through plumule; Top stream thing gets into one-level germ separation device again, and underflow slurry is gone into the fine grinding operation;
(4) grind
The underflow grout that process secondary cyclone separator is isolated behind the plumule passes through pressure curved sieve, and screen underflow is a coarse starch milk; Screen overflow gets into impact grinding (or pin mill) and carries out fine grinding, dissociates out with the free starch that itself and fiber are connect, and in the feasible slurry after grinding of the condition of pin mill, connects starch and is not more than 10 weight %;
Slurry after the fine grinding gets into the fiber wash groove, delivers to first step pressure curved sieve at these washing water with later washing the fibre.Screen underflow is isolated coarse starch milk, and through the countercurrent washing of the bent sieve of 6 stage pressures, washing process water adds before the last step sieve screen overflow again; Through compass screen surface, carrying the free starch that washs and moving forward step by step, before first step sieve in the rinse bath; Merge with the slurry after the fine grinding, get into first step pressure curved sieve jointly, tell coarse starch milk; The screen underflow coarse starch milk that this milk of starch and fine grinding fore worker are told converges, and gets into the starch separation circuit.Fiber on the compass screen surface, skin slag and washing water are gone against the stream, and,, after washing screening several times, discharge from the bent sieve of last step to each sieve is mobile later on from first sieve, dewater through screw extrusion press then;
(5) milk of starch is refining
Bent screening after sand separator, revolving filter are removed impurity, gets into elementary separating centrifuge (disc separator) from the thick starch that obtains from the fine grinding front and back, and it is rare seitan water that the overflow substance of discharging is flowed on the top, should carry out following processing by rare seitan water:
(1) presses 350m
3The total flux of/h is on average sent into rare seitan water (concentration of proteinaceous solid substance is 1.7 weight %) and simultaneously rare seitan water is carried out once concentration in two disc separators (total feed of rare seitan water is 350m
3/ h, each inlet amount is 175m
3/ h, the rotating speed of spinning are respectively 3400 rev/mins, and the temperature of spinning is 45 ℃), the total flux that obtains first water is 200m
3/ the h (content of the proteinaceous solid substance of first aqueous phase is 0.3 weight %) and the total flux of first concentrated phase are 150m
3(the concentrated phase flow of each separating machine is respectively 75m to/h
3/ h) (proteinaceous solid content is 3.8 weight % in first concentrated phase); First concentrated phase sent into once more carry out secondary concentration in the disc separator (feed rate of first concentrated phase is 150m
3/ h, the rotating speed of spinning are 3500 rev/mins, and the temperature of spinning is 45 ℃), obtaining the second water flow is 106m
3/ the h and the second concentrated phase flow are 44m
3/ h (proteinaceous solid content is 12.1 weight % in second concentrated phase);
(2) second concentrated phase that step (1) is obtained is inserted in the flame filter press and is filtered, and obtains filter cake (moisture 50 weight %); The filter cake that obtains is obtained feed (moisture content 10 weight %) 120 ℃ of oven dry, and the protein content that gets in the feed with the butt instrumentation is 62% (m/m);
The starch concentration that obtains from elementary separating centrifuge underflow is 19-20 ° of Be '; And the moisture about 60 weight % of purified starch breast after 12 grades of swirler-washings; Protein contnt is less than 0.35 weight %; Smart milk of starch obtains the wet starch of moisture 38-40 weight % after dehydration, wet starch is sent into pneumatic drier and is dried to the commodity starch finished product.
Embodiment 2
Present embodiment is used to explain the preparation method of W-Gum provided by the invention.
Method according to embodiment 1 prepares W-Gum, and different is that the treatment process of said rare seitan water comprises:
(1) presses 380m
3The total flux of/h is on average sent into rare seitan water (concentration of proteinaceous solid substance is 1.5 weight %) and simultaneously rare seitan water is carried out once concentration in two disc separators (total feed of rare seitan water is 380m
3/ h, each inlet amount is 190m
3/ h, the rotating speed of spinning are respectively 3300 rev/mins, and the temperature of spinning is 45 ℃), the total flux that obtains first water is 234m
3/ the h (content of the proteinaceous solid substance of first aqueous phase is 0.28 weight %) and the total flux of first concentrated phase are 146m
3(the concentrated phase flow of each separating machine is respectively 73m to/h
3/ h) (proteinaceous solid content is 3.5 weight % in first concentrated phase); First concentrated phase sent into once more carry out secondary concentration in the disc separator (feed rate of first concentrated phase is 146m
3/ h, the rotating speed of spinning are 3400 rev/mins, and the temperature of spinning is 45 ℃), obtaining the second water flow is 102m
3/ the h and the second concentrated phase flow are 44m
3/ h (proteinaceous solid content is 11 weight % in second concentrated phase);
(2) second concentrated phase that step (1) is obtained is inserted in the flame filter press and is filtered, and obtains filter cake (moisture 50 weight %); The filter cake that obtains is obtained feed (moisture content 10 weight %) 120 ℃ of oven dry, and the protein content that gets in the feed with the butt instrumentation is 60% (m/m).
Embodiment 3
Present embodiment is used to explain the preparation method of W-Gum provided by the invention.
Method according to embodiment 1 prepares W-Gum, and different is that the treatment process of said rare seitan water comprises:
(1) presses 360m
3The total flux of/h is on average sent into rare seitan water (concentration of proteinaceous solid substance is 1.6 weight %) and simultaneously rare seitan water is carried out once concentration in two disc separators (total feed of rare seitan water is 360m
3/ h, each inlet amount is 180m
3/ h, the rotating speed of spinning are respectively 3300 rev/mins, and the temperature of spinning is 45 ℃), the total flux that obtains first water is 231m
3/ the h (content of the proteinaceous solid substance of first aqueous phase is 0.31 weight %) and the total flux of first concentrated phase are 129m
3(the concentrated phase flow of each separating machine is respectively 64.5m to/h
3/ h) (content of proteinaceous solid substance is 3.9 weight % in first concentrated phase); First concentrated phase sent into once more carry out secondary concentration in the disc separator (feed rate of first concentrated phase is 129m
3/ h, the rotating speed of spinning are 3400 rev/mins, and the temperature of spinning is 45 ℃), obtaining the second water flow is 92m
3/ the h and the second concentrated phase flow are 37m
3/ h (content of proteinaceous solid substance is 12.3 weight % in second concentrated phase);
(2) second concentrated phase that step (1) is obtained is inserted in the flame filter press and is filtered, and obtains filter cake (moisture 50 weight %); The filter cake that obtains is obtained feed (moisture content 10 weight %) 120 ℃ of oven dry, and the protein content that gets in the feed with the butt instrumentation is 61% (m/m).
Embodiment 4
Present embodiment is used to explain the preparation method of W-Gum provided by the invention.
Method according to embodiment 1 prepares W-Gum, and different is that the treatment process of said rare seitan water comprises:
(1) presses 380m
3The total flux of/h is on average sent into rare seitan water (concentration of proteinaceous solid substance is 1.7 weight %) and simultaneously rare seitan water is carried out once concentration in two disc separators (total feed of rare seitan water is 380m
3/ h, each inlet amount is 190m
3/ h, the rotating speed of spinning are respectively 3300 rev/mins, and the temperature of spinning is 45 ℃), the total flux that obtains first water is 228m
3/ the h (content of the proteinaceous solid substance of first aqueous phase is 0.29 weight %) and the total flux of first concentrated phase are 152m
3(the concentrated phase flow of each separating machine is respectively 76m to/h
3/ h) (content of proteinaceous solid substance is 3.8 weight % in first concentrated phase); First concentrated phase sent into once more carry out secondary concentration in the disc separator (feed rate of first concentrated phase is 152m
3/ h, the rotating speed of spinning are 3400 rev/mins, and the temperature of spinning is 45 ℃), obtaining the second water flow is 110m
3/ the h and the second concentrated phase flow are 42m
3/ h (solid content is 11.8 weight % in second concentrated phase);
(2) second concentrated phase that step (1) is obtained is inserted in the vacuum-type drum filter and is filtered, and obtains filter cake (moisture 50 weight %); The filter cake that obtains is obtained feed (moisture content 10 weight %) 120 ℃ of oven dry, and the protein content that gets in the feed with the butt instrumentation is 61% (m/m).
Comparative Examples 1
This Comparative Examples is used to explain the preparation method of the W-Gum of prior art.
Method according to embodiment 1 prepares W-Gum, and different is that the treatment process of said rare seitan water comprises:
(1) presses 350m
3The flow of/h is on average sent into total rare seitan water (proteinaceous solid concentration is 1.7 weight %) and simultaneously seitan water is concentrated in two disc separators that (the combined feed total feed flow of seitan water is 350m
3/ h, each inlet amount is 175m
3/ h, the rotating speed of spinning are respectively 3300 rev/mins, and the temperature of spinning is 45 ℃), the total flux that obtains process water is 310m
3(the process water flow of each separating machine is 155m to/h
3/ h) (proteinaceous solid content is 0.76 weight % in the process water) and the total flux of enriched material are 40m
3(the enriched material flow of each separating machine is 20m to/h
3/ h) (proteinaceous solid content is 9 weight % in the enriched material);
(2) enriched material that step (1) is obtained is inserted in the flame filter press and is filtered, and obtains filter cake (moisture 50 weight %); The filter cake that obtains is obtained feed (moisture content 10 weight %) 120 ℃ of oven dry, and the protein content that gets in the feed with the butt instrumentation is 55% (m/m).
Contrast by the foregoing description 1-4 and Comparative Examples 1 can be found out; Adopt the preparation method of W-Gum of the present invention effectively to concentrate to seitan water; And be met the process water (proteinaceous solid content is less than 0.3 weight % in first water) of direct reuse standard simultaneously and contain the higher enriched material of proteinaceous solid content (proteinaceous solid content is greater than 11 weight % in second concentrated phase); On the one hand; Process water reuse circulation once more soaks corn and plumule, fiber is washed, and on the other hand, can improve the productive rate of gluten protein powder.
Claims (9)
1. the preparation method of a W-Gum, this method comprises soaks corn grain, and the corn grain that will pass through immersion carries out fragmentation; Isolate plumule, the corn grain tissue that contains maize peel and endosperm that will take off behind the embryo grinds, and isolates fiber; The coarse starch milk that obtains separated obtaining seitan water and milk of starch, and milk of starch is washed, it is characterized in that; The treatment process of said seitan water comprises seitan water concentrated, and said the spissated method of seitan water comprised:
(1) seitan water is carried out once concentration, obtain first concentrated phase and first water, the condition of once concentration makes the content of the proteinaceous solid substance of first aqueous phase that obtains less than 0.3 weight %;
(2) first concentrated phase is carried out secondary concentration, obtain second concentrated phase and second water, it is more than the 10 weight % that the condition of secondary concentration makes the content of proteinaceous solid substance in second concentrated phase that obtains.
2. method according to claim 1; Wherein, It is 0.1-0.3 weight % that the condition of once concentration makes the content of the proteinaceous solid substance of first aqueous phase that obtains, and it is 10-12 weight % that the condition of secondary concentration makes the content of proteinaceous solid substance in second enriched material that obtains.
3. method according to claim 1 and 2, wherein, it is 2-3 that the condition of once concentration makes the concentration ratio of first concentrated phase: 1, the concentration ratio of said first concentrated phase is the feed volume of once concentration seitan water and the ratio of the first concentrated phase volume.
4. method according to claim 3, wherein, it is 2.3-2.8 that the condition of once concentration makes the concentration ratio of first concentrated phase: 1.
5. method according to claim 1 and 2, wherein, the condition of secondary concentration makes that the concentration ratio of second concentrated phase is 3-4: 1, the concentration ratio of said second concentrated phase is the feed volume of secondary concentration first concentrated phase and the ratio of the second concentrated phase volume.
6. method according to claim 5, wherein, the condition of secondary concentration makes that the concentration ratio of second concentrated phase is 3.3-3.7: 1.
7. method according to claim 1 and 2, wherein, the method for once concentration and secondary concentration is the method for spinning.
8. method according to claim 1, wherein, this method also comprises the step that isolated proteinaceous solid substance from second concentrated phase is dehydrated.
9. method according to claim 1, wherein, the method that corn grain is soaked is included under 50-55 ℃, is that the sulfurous acid aqueous solution of 0.1-0.5 weight % contacts 48-52 hour with corn particle and concentration.
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| CN201110071117.5A CN102690360B (en) | 2011-03-23 | 2011-03-23 | Preparation method of corn starch |
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| CN201110071117.5A CN102690360B (en) | 2011-03-23 | 2011-03-23 | Preparation method of corn starch |
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| CN102690360B CN102690360B (en) | 2014-06-25 |
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| CN201110071117.5A Active CN102690360B (en) | 2011-03-23 | 2011-03-23 | Preparation method of corn starch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059145A (en) * | 2012-12-22 | 2013-04-24 | 泰安弘兴玉米开发有限公司 | Method for producing corn protein powder |
| CN103755818A (en) * | 2013-12-26 | 2014-04-30 | 河南天豫薯业股份有限公司 | Impurity removal production process of sweet potato starch |
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|---|---|---|---|---|
| EP0848014A2 (en) * | 1996-12-13 | 1998-06-17 | Costimex S.A. | Process for producing maize starch |
| JP2868818B2 (en) * | 1990-01-08 | 1999-03-10 | 日本食品化工株式会社 | Treatment of corn starch extraction residue |
| CN101885779A (en) * | 2010-06-30 | 2010-11-17 | 潍坊盛泰药业有限公司 | Method for recycling process water in production of cornstarch |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2868818B2 (en) * | 1990-01-08 | 1999-03-10 | 日本食品化工株式会社 | Treatment of corn starch extraction residue |
| EP0848014A2 (en) * | 1996-12-13 | 1998-06-17 | Costimex S.A. | Process for producing maize starch |
| CN101885779A (en) * | 2010-06-30 | 2010-11-17 | 潍坊盛泰药业有限公司 | Method for recycling process water in production of cornstarch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059145A (en) * | 2012-12-22 | 2013-04-24 | 泰安弘兴玉米开发有限公司 | Method for producing corn protein powder |
| CN103755818A (en) * | 2013-12-26 | 2014-04-30 | 河南天豫薯业股份有限公司 | Impurity removal production process of sweet potato starch |
| CN103755818B (en) * | 2013-12-26 | 2016-05-04 | 河南天豫薯业股份有限公司 | A kind of starch from sweet potato removal of impurities production technology |
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| CN102690360B (en) | 2014-06-25 |
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Application publication date: 20120926 Assignee: State Grain Reserve Wuhan Scientific Research and Design Institute Assignor: Cofco Group Co., Ltd. Contract record no.: 2015420000027 Denomination of invention: Method for preparing corn starch Granted publication date: 20140625 License type: Exclusive License Record date: 20150311 |
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Address after: COFCO Plaza No. 8 Beijing Chaoyang District City 100020 Chaoyangmen South Street Co-patentee after: State's grain Wuhan company limited of scientific research designing institute Patentee after: Cofco Group Co., Ltd. Address before: COFCO Plaza No. 8 Beijing Chaoyang District City 100020 Chaoyangmen South Street Co-patentee before: State Grain Reserve Wuhan Scientific Research and Design Institute Patentee before: Cofco Group Co., Ltd. |