CN105316376B - A kind of processing method of starchy material - Google Patents
A kind of processing method of starchy material Download PDFInfo
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- CN105316376B CN105316376B CN201410332156.XA CN201410332156A CN105316376B CN 105316376 B CN105316376 B CN 105316376B CN 201410332156 A CN201410332156 A CN 201410332156A CN 105316376 B CN105316376 B CN 105316376B
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Abstract
The invention discloses a kind of processing methods of starchy material, method includes the following steps: 1) farinaceous size obtained by starchy material is mixed with partial starch enzyme, obtain mixture, the mixture is contacted with steam, the condition of contact makes the temperature of the mixture after contacting with steam be 105-115 DEG C, and is kept for 5-8 minutes at such a temperature；2) mixture after the contacting with steam of step 1) is flashed, it is cooled to 95-98 DEG C, and it is mixed with the amylase of remainder, it is digested, wherein, the weight ratio of the dosage of the amylase of the remainder in the dosage Yu step 2) of the partial starch enzyme in step 1) is 1:0.3-0.7.By above technical scheme, the method for the present invention can reduce the DE value of residual content of starch and enzymatic hydrolysis clear liquid in enzymatic hydrolysis residue, to improve starch utilization ratio, thoroughly, moreover, the method for the present invention improves the light transmittance of enzymatic hydrolysis clear liquid, hydrolysis result is significantly improved for liquefaction.
Description
Technical field
The present invention relates to a kind of processing methods of starchy material.
Background technique
Domestic enterprise carries out pretreated method to starchy material (by taking corn as an example) at present are as follows: water is added in corn flour
In size mixing to obtain slurries, then, the pH value that addition calcium hydroxide adjusts slurries is 6.0-6.5, and amylase is added, primary to spray
To 80-95 DEG C, maintains to carry out filters pressing after iodine examination is qualified, liquefaction clear liquid is made.
The above method has the following deficiencies: that (1) amylase is difficult to be uniformly mixed with corn flour, and liquefaction effect is unstable.(2)
Starch utilization ratio is low.(3) liquefaction is not thorough, and sugaring grain consumption is high, although joined more amylase, starchy material
Still it is difficult to liquefy, even if finally making the examination of liquefier iodine qualified reluctantly, but liquefier filters pressing is difficult, and filter residue viscosity is big, aqueous
Amount is high, part liquid glucose can not only be brought into filter residue, while also causing the waste of amylase.
Summary of the invention
It is an object of the invention to overcome drawbacks described above in the prior art, a kind of can reduce in enzymatic hydrolysis residue is provided
The starchy material processing method of residual content of starch, the DE value for reducing enzymatic hydrolysis clear liquid and the light transmittance for improving enzymatic hydrolysis clear liquid.
The present inventor has found that starchy material is really dissolved in 100-160 DEG C of ability, but existing under study for action
The complete or partial inactivation that will cause amylase in technology due to considering high temperature will not then use so high gelatinization point, and
It is first primary in lower temperature injection, and maintains the long period, then primary in higher temperature fill-before-fire.The present inventor's warp
Research is crossed, the existing technique sprayed twice is changed, using primary injection and technique enzyme twice, passes through control gelatinization temperature
Degree and time can not only make gelatinization thoroughly to a certain range, but also not will lead to amylase inactivation, while can also reduce gelatinization mucus
Viscosity；Maintain temperature to the optimum temperature of amylase by the way that amylase and control liquefaction is added portionwise, so that amylase be made to fill
Divide and play a role, obtains good hydrolysis result, then complete the present invention.
The present invention provides a kind of processing methods of starchy material, method includes the following steps:
(1) farinaceous size obtained by starchy material is mixed with partial starch enzyme, obtains mixture, by the mixture
It is contacted with steam, the condition of contact makes the temperature of the mixture after contacting with steam be 105-115 DEG C, and protects at such a temperature
It holds 5-8 minutes；
(2) mixture after the contacting with steam of step (1) is flashed, is cooled to 95-98 DEG C, and the shallow lake with remainder
The mixing of powder enzyme, is digested,
Wherein, the dosage of the partial starch enzyme in step (1) and the dosage of the amylase of the remainder in step (2)
Weight ratio is 1:0.3-0.7.
By above technical scheme, the method for the present invention can reduce the residual content of starch in enzymatic hydrolysis residue and digest clear liquid
DE value, to improve starch utilization ratio, liquefaction thoroughly, moreover, the method for the present invention improves the light transmittance of enzymatic hydrolysis clear liquid, is digested
Significant effect improves.
In a preferred embodiment of the invention, by adjusting liquefaction process, it can be realized the higher (32- of dry matter content
40 weight %) farinaceous size efficient liquefaction, form sediment guaranteeing that preferably liquefaction and saccharification result under the premise of save preparation
Water consumption during slurry liquid (sizing mixing) (for consuming the production line of 130,000 tons of starchy materials year, at least saves 4.5 every year
Ten thousand tons).
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, term " DE value " refers to that reduced sugar (with glucose meter) accounts for
The percentage of feed liquid dry matter.
The processing method of starchy material provided by the invention the following steps are included:
(1) farinaceous size obtained by starchy material is mixed with partial starch enzyme, obtains mixture, by the mixture
It is contacted with steam, the condition of contact makes the temperature of the mixture after contacting with steam be 105-125 DEG C of (preferably 110-120
DEG C), and 5-8 minutes (preferably 6-7 minutes) is kept at such a temperature；
(2) mixture after the contacting with steam of step (1) is flashed, is cooled to 95-98 DEG C, and the shallow lake with remainder
The mixing of powder enzyme, is digested,
Wherein, the dosage of the partial starch enzyme in step (1) and the dosage of the amylase of the remainder in step (2)
Weight ratio is 1:0.3-0.7 (preferably 1:0.4-0.6).
In the present invention, the amylase of the remainder in mixture and step (2) after being contacted with steam of step (1)
Mixing can carry out after material is cooled to 95-98 DEG C, can also carry out before material is cooled to 95-98 DEG C, but preferably
It is carried out before material is cooled to 95-98 DEG C, that is, before being flashed, the amylase that remainder is added makes itself and step (1)
Contacted with steam after mixture mixing, then flashed and digested again.
According to the present invention, the dosage of the amylase in right amount preferably, comprehensive hydrolysis result and cost consideration, relative to per ton
Starchy material in terms of dry weight, total dosage of the amylase are 400-450g, preferably 420-450g.
Amylase is the general name for referring to the class of enzymes of starch-splitting glycosidic bond, and the amylase generally comprises alphalise starch
Enzyme, beta amylase, carbohydrase and isoamylase.
Alpha-amylase is also known as starch Isosorbide-5-Nitrae-dextromase, it can arbitrarily, irregularly cut the α -1 inside starch chain,
Starch Hydrolysis is maltose, the oligosaccharides containing 6 glucose units and with the oligosaccharides of branch by 4- glycosidic bond.Produce this enzyme
Microorganism mainly have hay bacillus, aspergillus niger, aspergillus oryzae and head mold.
Beta amylase is also known as starch Isosorbide-5-Nitrae-maltoside enzyme, can cut Isosorbide-5-Nitrae-glucosides from starch molecule non reducing end
Key generates maltose.This enzyme effect is maltose and limit dextrin in the product of starch.This enzyme is mainly by aspergillus, head mold and interior
The mould generation of spore.
Carbohydrase is also known as starch α-Isosorbide-5-Nitrae-glucuroide, this enzyme effect is in the non reducing end of starch molecule, with Portugal
Grape sugar is unit, successively acts on α-Isosorbide-5-Nitrae-glycosidic bond in starch molecule, generates glucose.Carbohydrase acts on amylopectin
Product afterwards has glucose and the oligosaccharides with α -1,6- glycosidic bond；Product almost all after acting on amylose is grape
Sugar.This enzyme producing strains is mainly aspergillus niger (left U.S. aspergillus, aspergillus awamori), head mold (snow-white enzyme, Rhizopus delemar), quasi- interior spore
Mould, monascus.
Isoamylase is also known as starch α -1, and 6- glucuroide, branching enzyme, this enzyme effect is in branched amylopectin molecules branching-point
The entire side chain of amylopectin is cut and becomes amylose by the α -1,6- glycosidic bond at place.This enzyme producing strains mainly dislikes gas bar
The bacteriums such as bacterium, bacillus and certain Pseudomonas.
According to the present invention it is preferred to use alpha-amylase and/or isoamylase.In alpha-amylase, it is mostly used high temperature resistant at present
Alpha-amylase, Thermostable α-Amylase have fabulous heat resistance, are using bacillus licheniformis through deep drainpipe, extraction etc.
Process refines, and α-Isosorbide-5-Nitrae glucoside bond inside energy random hydrolysis starch, glycogen and its degradation product makes colloidal starch molten
The viscosity of liquid declines rapidly, generates soluble dextrins and oligosaccharide, excessive hydrolysis can produce a small amount of glucose and maltose.Cause
This, most preferably with Thermostable α-Amylase in the present invention.
According to the present invention, by starchy material obtain farinaceous size method can using well known to a person skilled in the art
Smashed product and water are mixed to get farinaceous size for example, crushing starchy material by various conventional methods.It will form sediment
The condition and mode that silty raw material crushes are not particularly limited, as long as starchy material can be made sufficiently broken, preferably
In the case of, the average grain diameter of obtained smashed product is 10-50 microns.Smashed product and water are mixed to get starch
During slurries, the dosage of water is not particularly limited, and in terms of the dry weight of starchy material, controls the concentration of the farinaceous size
Preferably 32-40 weight %, more preferably 35-40 weight %.It was found by the inventors of the present invention that passing through the above preferred liquefaction item
The enzymatic hydrolysis of the farinaceous size to higher concentration (32-40 weight %) can be better achieved in part, thus guaranteeing preferably liquefaction
With under the premise of saccharification result save size mixing during water consumption (for consuming the production line of 130,000 tons of starchy materials year,
4.5 ten thousand tons are at least saved every year).The pH value of the farinaceous size can be 5.6-5.8.
According to the present invention, in step (1), to the mixing of farinaceous size and amylase, there is no particular limitation, but warm
Spend the more slightly higher mixing for being conducive to the two and subsequent gelatinization, it is preferable that mixed temperature is 50-60 DEG C.In step (1)
In, farinaceous size and the selectable range for the condition that the mixture of amylase is contacted with steam are wider, as long as forming sediment after guaranteeing contact
The mixture of slurry liquid and amylase can respectively reach its suitable temperature, for example, the mixture is contacted with steam
Condition include contact temperature, the usage ratio of steam and mixture and time of contact etc..Under preferable case, in step
(1) in, the condition of contact includes that the temperature of steam is 150-200 DEG C, and the weight ratio of steam and mixture is 0.02-0.1:1, is connect
The time of touching is 1-5 seconds；In more preferable situation, the energy and cost are comprehensively considered, in step (1), the temperature of steam is 160-
180 DEG C, the ratio of steam and mixture is 0.04-0.06:1, and the time of contact is 1-3 seconds.
Wherein, the mode for contacting farinaceous size with steam with the mixture of amylase is not particularly limited, preferable case
Under, it can be in injector known in those skilled in the art (for example, the long water heater of million smooth injectors or day.) in sprayed
Contact, that is, by the mixture and steam of farinaceous size and amylase be ejected into simultaneously, quickly in injector carry out moment connect
Touching.
According to the present invention, in step (2), starch molecule is made by quick temperature change bring in order to preferably reach
Expansion it is more abundant so that the purpose of bulky grain starch swelling fracture starch granule can be made, and make amylase with
The contact effect of starch granules is more preferable, to reach more preferably hydrolysis result, the present invention by the way of the flash distillation by step (1) with
Mixture after steam contact is cooled to 95-98 DEG C, and preferably, during continuous production by flash distillation after obtained steam
In return step (1), for contacting with mixture, the reuse of steam can substantially reduce production cost.In addition, being obtained after flash distillation
Condensed water can also to be used to prepare farinaceous size in return step (1), that is, for starchy material is crushed after obtain
Smashed product mixing is to be prepared farinaceous size.Wherein, flash distillation refers to that the saturated water of high pressure enters the container of relatively low pressure
In after due to pressure the unexpected saturated steam and saturated water reduced under the container pressure for making these saturated waters become a part.
According to the present invention, the selectable range of the condition of the flash distillation is wider, as long as being allowed to cool down after achieving the purpose that flash distillation, example
Such as, the mode of the flash distillation can be atmospheric flashing, or vacuum flashing (vacuum flash), present invention preferably uses vacuum
The method of flash distillation, the condition of the flash distillation include that the pressure of flash distillation can be -0.06MPa to -0.09MPa, and the time of flash distillation can
Think 5-15 seconds.
According to the present invention, the step of maintenance that needs to liquefy after flash distillation is digested, it is preferable that in step (2), the enzymatic hydrolysis
Condition include: pH value be 5.5-7, more preferably 5.8-6.2, the time be 60-150 minutes, more preferably 90-120 minutes.
According to the present invention, in order to make starchy material be converted into monosaccharide as much as possible, the method further preferably includes that will walk
Suddenly the liquefier obtained after enzymatic hydrolysis in (2) is saccharified.
Wherein, the condition of the saccharification is not particularly limited, the temperature of the saccharification is preferably 60-70 DEG C.It is described
The pH value of saccharification is preferably 4.2-4.4.The time of the saccharification is preferably 36-48h.The dosage of carbohydrase used in being saccharified can be
The saccharification enzyme dosage of this field routine, it is preferable that relative to the dry matter in farinaceous size per ton, the amount for the carbohydrase used that is saccharified
For 550-650g.
Wherein, carbohydrase is also known as starch α-Isosorbide-5-Nitrae-glucuroide, this enzyme effect in the non reducing end of starch molecule,
As unit of glucose, α-Isosorbide-5-Nitrae-glycosidic bond in starch molecule is successively acted on, generates glucose.Carbohydrase acts on branch
Product after starch has glucose and the oligosaccharides with α -1,6- glycosidic bond；Product almost all after acting on amylose is
Glucose.The carbohydrase can be commercially available.
The mode of the saccharification is not required particularly, the usual manner for being referred to this field carries out, for example, by institute
It obtains liquefier to be added in saccharifying tank, carbohydrase is added and simultaneously stirs, DE value is generally reached into 98-98.8% as saccharification terminal.
According to the present invention, the method can also include being separated by solid-liquid separation the saccharified liquid obtained after saccharification, and will divide
Liquid phase (liquid glucose) from acquisition is concentrated, to obtain syrup.Relative to existing processing method, method of the invention can be located
The higher farinaceous size of dry matter content is managed, the water consumption for step of sizing mixing not only has been saved, also helps and saves concentration step
Energy consumption.
According to the present invention, the starchy material can for it is well known in the art it is various can be used for digest, fermentation preparation
The raw material containing starch of citric acid, for example, it can be selected from least one of corn, potato (such as cassava), wheat and sorghum,
Moisture content is preferably smaller than 16 weight % in the starchy material.
The present invention will be described in detail by way of examples below.In following embodiment, the starchy material used is
The maize raw material that the average particle size obtained after corn (moisture content is 13 weight %) is crushed is 10 microns；The measurement of light transmittance
Method reference standard QB/T2319-1997, instrument are spectrum SP-752 ultraviolet-uisible spectrophotometer (Shanghai spectral instrument
Co., Ltd), light transmittance is higher, illustrates that the turbidity of liquid glucose is lower, liquid glucose is purer；DE value titrates detection method using fehling reagent
It measures.In following embodiment, test method without specific conditions, it carries out according to normal conditions.
Embodiment 1
(1) it is 35 weight % that dry matter content is added with water into starchy material, obtains farinaceous size, at 50 DEG C,
Obtained farinaceous size (pH value is adjusted to 6.0) is mixed with the alpha-amylase of 71 weight % of the total weight for accounting for alpha-amylase
(alpha-amylase that 420g is added in dry matter per ton), obtains mixture, by the mixture and 170 DEG C of steam in injector into
Row injection contact (weight ratio of steam and mixture is 0.05:1), the time of contact is 2 seconds, so that mixed after contacting with steam
The temperature for closing object is 110 DEG C, and is kept for 7 minutes at such a temperature；
(2) mixture after contacting above-mentioned steps with steam is flashed (pressure is -0.06MPa, and the time is 10 seconds)
It is mixed to 95 DEG C, and with the alpha-amylase of 29 weight % of the total weight for accounting for alpha-amylase, adjusting pH value to 6.0, and in the temperature
Degree is lower to be kept for 100 minutes；And in the step of contacting the steam obtained after flash distillation return above-mentioned first time with steam, by condensed water
Continue on for mixing with the crushed products of corn in return step (1)；
(3) saccharifying tank is added in the liquefier (DE value is 14%) obtained step (2), under 60 DEG C, pH value 4.4, is added
Carbohydrase (carbohydrase of 550g is added in 4060 compounded saccharifying enzymes of Genencor Company's production, dry matter per ton), stirs 48h, i.e.,
To saccharification terminal (DE value is 98.5%)；
(4) saccharified liquid obtained after saccharification is subjected to filters pressing, the light transmittance for measuring the liquid phase (liquid glucose) that filters pressing obtains is
98.3%.
Embodiment 2
(1) it is 40 weight % that dry matter content is added with water into starchy material, obtains farinaceous size, at 60 DEG C,
Obtained farinaceous size (pH value is adjusted to 7.0) is mixed with the alpha-amylase of 62.5 weight % of the total weight for accounting for alpha-amylase
(alpha-amylase that 450g is added in dry matter per ton), obtains mixture, by the mixture and 160 DEG C of steam in injector into
Row injection contact (weight ratio of steam and mixture is 0.06:1), the time of contact is 3 seconds, so that mixed after contacting with steam
The temperature for closing object is 120 DEG C, and is kept for 6 minutes at such a temperature；
(2) mixture after contacting above-mentioned steps with steam is flashed (pressure is -0.09MPa, and the time is 5 seconds) extremely
98 DEG C, and mixed with the alpha-amylase of 37.5 weight % of the total weight for accounting for alpha-amylase, adjusting pH value to 6.2, and in the temperature
Degree is lower to be kept for 120 minutes；And in the step of contacting the steam obtained after flash distillation return above-mentioned first time with steam, by condensed water
Continue on for mixing with the crushed products of corn in return step (1)；
(3) saccharifying tank is added in the liquefier (DE value is 16%) obtained step (2), under 70 DEG C, pH value 4.2, is added
Carbohydrase (carbohydrase of 600g is added in 4060 compounded saccharifying enzymes of Genencor Company's production, dry matter per ton), stirs 36h, i.e.,
To saccharification terminal (DE value is 98.8%)；
(4) saccharified liquid obtained after saccharification is subjected to filters pressing, the light transmittance for measuring the liquid phase (liquid glucose) that filters pressing obtains is
99%.
Embodiment 3
(1) it is 38 weight % that dry matter content is added with water into starchy material, obtains farinaceous size, at 55 DEG C,
Obtained farinaceous size (pH value is adjusted to 5.8) is mixed with the alpha-amylase of 65 weight % of the total weight for accounting for alpha-amylase
(alpha-amylase that 430g is added in dry matter per ton), obtains mixture, by the mixture and 180 DEG C of steam in injector into
Row injection contact (weight ratio of steam and mixture is 0.04:1), the time of contact is 1 second, so that mixed after contacting with steam
The temperature for closing object is 115 DEG C, and is kept for 6.5 minutes at such a temperature；
(2) mixture after contacting above-mentioned steps with steam is flashed (pressure is -0.07MPa, and the time is 15 seconds)
It is mixed to 97 DEG C, and with the alpha-amylase of 35 weight % of the total weight for accounting for alpha-amylase, adjusting pH value to 5.8, and in the temperature
Degree is lower to be kept for 90 minutes；And in the step of contacting the steam obtained after flash distillation return above-mentioned first time with steam, by condensed water
Continue on for mixing with the crushed products of corn in return step (1)；
(3) saccharifying tank is added in the liquefier (DE value is 12%) obtained step (2), under 62 DEG C, pH value 4.3, is added
Carbohydrase (carbohydrase of 650g is added in 4060 compounded saccharifying enzymes of Genencor Company's production, dry matter per ton), stirs 42h, i.e.,
To saccharification terminal (DE value is 98.5%)；
(4) saccharified liquid obtained after saccharification is subjected to filters pressing, the light transmittance for measuring the liquid phase (liquid glucose) that filters pressing obtains is
99.2%.
Embodiment 4
Starchy material is handled according to the method for embodiment 3, unlike, dry matter is added with water into starchy material
Content be 30 weight %, the DE value of the liquefier of acquisition is 17%, and the DE value after saccharification is 96.9%, measures what filters pressing obtained
The light transmittance of liquid phase (liquid glucose) is 96.7%.
Embodiment 5
Starchy material is handled according to the method for embodiment 3, unlike, after being contacted in rate-determining steps (1) with steam
The temperature of mixture is 130 DEG C, and the DE value of the liquefier of acquisition is 19%, and the DE value after saccharification is 95.8%, measures filters pressing and obtains
The light transmittance of the liquid phase (liquid glucose) arrived is 90.4%.
Embodiment 6
Starchy material is handled according to the method for embodiment 3, unlike, another part alphalise starch is added in step (2)
The time kept after enzyme is 3h, and the DE value of the liquefier of acquisition is 20%, and the DE value after saccharification is 94.6%, measures filters pressing and obtains
Liquid phase (liquid glucose) light transmittance be 94%.
Comparative example 1
Starchy material is handled according to the method for embodiment 3, unlike, alpha-amylase used in step (1) and step
Suddenly the weight ratio of alpha-amylase used in (2) is 1:1, and the DE value of the liquefier of acquisition is 17%, and the DE value after saccharification is
93%, the light transmittance for measuring the liquid phase (liquid glucose) that filters pressing obtains is 96%.
As can be seen from the above embodiments, it is liquefied thoroughly using the method for the present invention, starch utilization ratio is high, the light transmission after saccharification
Rate and DE value are higher.
Comparing embodiment 3 and comparative example 1 can be seen that dosage and step (2) of the partial starch enzyme in rate-determining steps (1)
In the weight ratio of dosage of amylase of remainder higher light transmittance can be obtained in the framework of the present definition
With DE value.By embodiment 3 as can be seen that controlling the content and liquefaction condition of dry matter in farinaceous size compared with embodiment 4-6
The DE value and light transmittance of liquid glucose can be further increased in the preferred scope that the present invention limits.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (6)
1. a kind of processing method of starchy material, which is characterized in that method includes the following steps:
(1) farinaceous size obtained by starchy material is mixed with partial starch enzyme, obtains mixture, by the mixture and steamed
Vapour contact, the condition of contact makes the temperature of the mixture after contacting with steam be 115-120 DEG C, and keeps 6- at such a temperature
7 minutes；
(2) mixture after the contacting with steam of step (1) is flashed, is cooled to 95-98 DEG C, and the amylase with remainder
Mixing, is digested,
Wherein, the weight of the dosage of the amylase of the dosage of the partial starch enzyme in step (1) and the remainder in step (2)
Than for 1:0.4-0.6；The condition contacted with steam includes that the temperature of steam is 160-180 DEG C, the weight ratio of steam and mixture
For 0.04-0.06:1, the time of contact is 1-3 seconds；
In terms of the dry weight of starchy material, the concentration for controlling the farinaceous size is 38-40 weight %；
The starchy material is corn.
2. according to the method described in claim 1, wherein, relative to the starchy material per ton in terms of dry weight, the amylase
Total dosage be 400-450g.
3. according to the method described in claim 1, wherein, relative to the starchy material per ton in terms of dry weight, the amylase
Total dosage be 420-450g.
4. according to the method described in claim 1, including by starchiness by the method that starchy material obtains farinaceous size wherein
Raw material crushes, and smashed product and water are mixed to get farinaceous size, in terms of the dry weight of starchy material, control the starch
The concentration of slurries is 38-40 weight %；The average grain diameter of smashed product is 10-50 μm.
5. according to the method described in claim 1, wherein, in step (2), the steam return step (1) that will be obtained after flash distillation
In for being contacted with mixture, farinaceous size will be used to prepare in the condensed water return step (1) obtained after flash distillation.
6. according to the method described in claim 1, wherein, in step (2), the condition of the enzymatic hydrolysis includes: that pH value is 5.5-
7, the time is 90-120 minutes.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101665843A (en) * | 2008-09-01 | 2010-03-10 | 石济民 | Method for preparing barley maltsyrup by using wheat flour |
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| MXPA01010889A (en) * | 2000-02-28 | 2002-06-21 | Grain Processing Corp | High purity maltose process and products. |
| CN102399844A (en) * | 2011-11-03 | 2012-04-04 | 中粮生物化学（安徽）股份有限公司 | Production method of glucose |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101665843A (en) * | 2008-09-01 | 2010-03-10 | 石济民 | Method for preparing barley maltsyrup by using wheat flour |
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| Title |
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| Simultaneous liquefaction,saccharification, and lactic acid fermentation on barley starch;Y.-Y. Linko;《Enzyme and Microbial Technology》;19960831;第19卷(第2期);第118-123页 |
| 玉米原料酒精厂液化糖化工艺;薛侠;《酿酒科技》;19990531(第95期);第53-54页 |
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