CN107568707A - One kind hydrogenation oligosaccharide and preparation method thereof - Google Patents
One kind hydrogenation oligosaccharide and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to one kind hydrogenation oligosaccharide and preparation method thereof.Oligosaccharide is hydrogenated, component is as follows：Sorbierite, maltitol, maltotriose alcohol, maltotetraose alcohol, it is more than maltopentaose alcohol.Present invention firstly discloses the hydrogenation oligosaccharide that main component is mainly accounted for by high molecular alcohol mixture, compared with table sugar alcohol, mouthfeel is soft, and sugariness is low；The product be difficult in animal body by mould, saccharomycete and lactic acid bacteria utilize, can anti-caries, do not influence blood glucose rise and insulin level, diabetes patient is edible.
Description
Technical field
The present invention relates to one kind hydrogenation oligosaccharide and preparation method thereof, belong to starch sugar derivatives preparing technical field.
Background technology
Because the unreasonable such as fat of dietary structure takes the photograph the excessive reason of people's amount, various common diseases such as hypertension, glycosuria are caused
Disease, the increase of the illness rate of obesity, resident's nutrition can not be ignored with health problem.Sugar alcohol as low calorie foods sweetener, with
And there is higher stability to acid, heat, it is not easy to Maillard reaction occurs, as sugar substitute, is widely used in food
In industry.
United States Patent (USP) US11547211 discloses a kind of method, and for the glucidtemns that ferments, glucidtemns contains 80
The glucose oligomer of the degree of polymerization 2 to 10 of~98 weight % glucose and 1~9 weight % non-fermented, non-fermented glucose
Oligomer includes isomaltose.
Chinese patent literature CN104136621A (application number 201380007104.9) discloses a kind of for preparing solidification
Or the method for crystal maltitol.Methods described includes following consecutive steps：Starch milk is liquefied；By the liquefied starch milk
In the case where alpha-amylase, beta amylase and debranching enzyme selected from amylopectase, isoamylase and its mixture be present
It is saccharified, the debranching enzyme is preferably amylopectase；And further add maltogenic alpha-amylase enzyme and/or different starch
Enzyme, to obtain the syrup containing maltose, the syrup bag is containing the maltose based on dry meter at least 85% and based on dry
Matter meter is less than 1.5% glucose, is based preferably on the glucose that dry meter is less than 1%；Then maltose is contained to described
Syrup carry out molecule screening, to obtain fraction (A), the fraction includes the dry meter at least 95% based on fraction (A)
Maltose；And by fraction (A) catalytic hydrogenation, to obtain the product liquid (B) rich in maltitol.Finally, the liquid is made
Enriched product solidifies or crystallization, to prepare solidification or crystal maltitol.
The product main component of above-mentioned technical proposal is D-sorbite, mannitol, erythrose alcohol, maltitol, lactose
Alcohol, xylitol etc., but these sugar alcohols being widely used are mainly single unit alcohol or disaccharide alcohol, sugar alcohol molecular weight compared with
Small, sweet taste is close or relatively low compared with sucrose, and sugariness is higher, and along with requirement of the consumer to low sweet tea, current sugar alcohol is still not
Can meet the needs of market.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides one kind hydrogenation oligosaccharide and preparation method thereof.Prepared by the present invention
Hydrogenation oligosaccharide is high molecular alcohol mixture, and sugariness is relatively low, and sweet taste is gentle, and without miscellaneous taste, the upgrading products as sugar alcohol can
It is widely used in luxury food field.
One kind hydrogenation oligosaccharide, component is as follows, is mass percent：
Sorbierite 0.1~8%, maltitol 0.1~12%, maltotriose alcohol 5~20%, maltotetraose alcohol 11~
24%, more than maltopentaose alcohol 43~84%.
According to currently preferred, the hydrogenation oligosaccharide, component is as follows, is mass percent：
Sorbierite 2~5%, maltitol 3~6%, maltotriose alcohol 10~20%, maltotetraose alcohol 13~24%, wheat
More than the sugar alcohol of bud five 57~72%.
A kind of preparation method for hydrogenating oligosaccharide, comprises the following steps：
(1) using cornstarch as raw material, the Baume degrees of starch milk 16~17 is adjusted, adds high temperature α α-amylase transient liquefactions, is added
Medium temperature starch enzymatic conversion, oligosaccharide is made；
(2) add water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 55~65%, be warming up to 55~65
DEG C, using calcium type resin cation as separation resin, material water volume ratio is 1:(1~1.5), post separation is crossed, the widow after purification is made
Glycan liquid；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 40~50%, adjusts pH value extremely
7.8~8.2, under conditions of 8.0~8.4MPa of Hydrogen Vapor Pressure, 128~132 DEG C of temperature, through Raney's nickel catalyst catalytic hydrogenation
2.5~4.5h is reacted, high-purity hydrogenation oligosaccharide is made；
(4) by high-purity made from step (3) hydrogenate oligosaccharide through decolourizing, filtering, desalination, vacuum concentration, hydrogenation is made
Oligosaccharide.
According to currently preferred, in the step (1), the addition of high temperature α α-amylases is every gram of cornstarch butt
Raw material adds 10~20U.
According to currently preferred, in the step (1), liquefaction condition is sprayed for the first time to be liquefied using secondary injection
Condensing temperature is 100~110 DEG C, and it is 121~140 DEG C that second, which is sprayed condensing temperature,.
According to currently preferred, in the step (1), the addition of medium temperature amylase is former for every gram of cornstarch butt
12~24U of material addition.
According to currently preferred, in the step (1), saccharification condition is 50~80 DEG C, 3~8 hours time；
According to currently preferred, in the step (2), the water is two-pass reverse osmosis water；Calcium type resin cation
Eluant, eluent is two-pass reverse osmosis water.
According to currently preferred, in the step (3), the addition of Raney's nickel catalyst for feed liquid quality 0.4~
0.6%；It is further preferred that the addition of the Raney's nickel catalyst is the 0.5% of feed liquid quality.
According to currently preferred, in the step (3), pH value regulator is sodium hydroxide.
According to currently preferred, in the step (4), decolourize to be entered using the activated carbon for accounting for feed liquid butt quality 1%
20~40min of row decoloring reaction；It is filtered into and is filtered using plate and frame filter press.
According to currently preferred, in the step (4), desalination is ion exchange desalination, and flow velocity is：3 times of resin volumes/
Hour, 35~55 DEG C of temperature, pass sequentially through strong acid positive resin-weak base negative resin-strong acid positive resin.
According to currently preferred, in the step (4), it is concentrated in vacuo dense to carry out vacuum using quadruple effect falling film evaporator
Contracting, condition are：0.06~0.09MPa of vacuum, 50~85 DEG C of feed temperature, feed concentration is concentrated into as 70~75%.
Beneficial effect
1st, present invention firstly discloses the hydrogenation oligosaccharide that main component is mainly accounted for by high molecular alcohol mixture, with table sugar
Alcohol is compared, and mouthfeel is soft, and sugariness is low；The product is difficult to be utilized by mould, saccharomycete and lactic acid bacteria in animal body, can preventing decayed tooth
Tooth, does not influence blood glucose rise and insulin level, and diabetes patient is edible；
2nd, hydrogenation oligosaccharide prepared by the present invention can suppress storage of the fat in human body, have emulsion stability, taste
It is similar with fat, it can be used as fat substitute, to produce low-calorie diet；
3rd, the present invention accounts for master by the optimization to saccharification condition and chromatographic separation condition, finally obtained high molecular alcohol mixture
The hydrogenation oligosaccharide of composition is wanted, applied to there is good hygroscopicity and performance of keeping humidity simultaneously in food industry, and with preferable
Heat-resisting, acid resistance can effectively extend the goods shelf-life while products taste is improved.
Embodiment
The present invention will be described further by embodiment below, the description of these embodiments is not to the present invention's
Content limits.It should be understood by those skilled in the art that the equivalent substitution made to present invention, or be correspondingly improved, still
Belong within protection scope of the present invention.
Biological reagent source
High temperature alpha amylase is purchased from Genencor Company；
Medium temperature amylase is purchased from imperial Coulter Corp.
Embodiment 1
A kind of preparation method for hydrogenating oligosaccharide, comprises the following steps：
(1) using cornstarch as raw material, the Baume degrees of starch milk 17 is adjusted, adds 10U's by every gram of cornstarch butt raw material
Ratio adds high temperature α α-amylases, is liquefied using secondary injection, and it is 100 DEG C to spray condensing temperature for the first time, second of injection liquefaction
Temperature is 140 DEG C, and the ratio that 20U is then added in every gram of cornstarch butt raw material adds medium temperature amylase, 50 DEG C, saccharification 5
Hour, oligosaccharide is made；
(2) add two-pass reverse osmosis water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 60%, be warming up to
60 DEG C, using calcium type resin cation as separation resin, using two-pass reverse osmosis water as eluant, eluent, material water volume ratio is 1:1.25 (phase
The volume ratio of commensurate), post separation is crossed, the oligomerization liquid glucose after purification is made；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 45%, sodium hydroxide adjusts pH
Value adds Raney's nickel catalyst to 8.0, by the 0.5% of feed liquid quality, excludes air 3 times with nitrogen, is then excluded again with hydrogen
Nitrogen, density of hydrogen is reached more than 99%, under conditions of Hydrogen Vapor Pressure 8.2MPa, 130 DEG C of temperature, start high pressure sealing and stir
Device is mixed, rotating speed 220r/min, constantly hydrogenation keep Hydrogen Vapor Pressure, promote hydro-reduction to act on, be catalyzed through Raney's nickel catalyst
Hydrogenation reaction 3h, when being passed through hydrogen and no longer being absorbed, content of reducing sugar is determined with 3.5- dinitrosalicylic Acid Colorimetries, when also
When raw sugar reaches 0.5wt%, terminating reaction, high-purity hydrogenation oligosaccharide is made；
(4) activated carbon is added in the ratio of feed liquid butt quality 1% into high-purity hydrogenation oligosaccharide made from step (3)
Decoloring reaction 30min, is then filtered through plate and frame filter press；Then with the flow velocity of 3 times of resin volume/hours, in temperature 45 C
Under the conditions of, desalting processing is once carried out by strong acid positive resin-weak base negative resin-strong acid positive resin；
Feed liquid Jing Guo desalting processing is carried out through quadruple effect falling film evaporator to be concentrated in vacuo to 72%, vacuum 0.08MPa,
70 DEG C of feed temperature；Hydrogenation oligosaccharide is made.
After testing, oligosaccharide is hydrogenated, component is as follows, is mass percent：
Sorbierite 2%, maltitol 3%, maltotriose alcohol 18%, maltotetraose alcohol 20%, more than maltopentaose alcohol
57%.
Embodiment 2
A kind of preparation method for hydrogenating oligosaccharide, comprises the following steps：
(1) using cornstarch as raw material, the Baume of starch milk 17 is adjusted, is added in every gram of cornstarch butt raw material 15U ratio
α α-amylases are increased temperature, are liquefied using secondary injection, it is 110 DEG C to spray condensing temperature for the first time, and second of injection condensing temperature is
130 DEG C, the ratio that 18U is then added in every gram of cornstarch butt raw material adds medium temperature amylase, is saccharified 6 under the conditions of 60 DEG C
Hour, oligosaccharide is made；
(2) add two-pass reverse osmosis water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 55%, be warming up to
65 DEG C, using calcium type resin cation as separation resin, using two-pass reverse osmosis water as eluant, eluent, material water volume ratio is 1:1.25 mistake
Post separation, the oligomerization liquid glucose after purification is made；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 40%, sodium hydroxide adjusts pH
Value adds Raney's nickel catalyst to 8.2, by the 0.5% of feed liquid quality, excludes air 3 times with nitrogen, is then excluded again with hydrogen
Nitrogen, density of hydrogen is reached more than 99%, under conditions of Hydrogen Vapor Pressure 8.2MPa, 130 DEG C of temperature, start high pressure sealing and stir
Device is mixed, rotating speed 220r/min, constantly hydrogenation keep Hydrogen Vapor Pressure, promote hydro-reduction to act on, be catalyzed through Raney's nickel catalyst
Hydrogenation reaction 2.5h, when being passed through hydrogen and no longer being absorbed, content of reducing sugar is determined with 3.5- dinitrosalicylic Acid Colorimetries, when
When reduced sugar reaches 0.5wt%, terminating reaction, high-purity hydrogenation oligosaccharide is made；
(4) activated carbon is added in the ratio of feed liquid butt quality 1% into high-purity hydrogenation oligosaccharide made from step (3)
Decoloring reaction 20min, is then filtered through plate and frame filter press；Then with the flow velocity of 3 times of resin volume/hours, in 55 DEG C of temperature
Under the conditions of, desalting processing is once carried out by strong acid positive resin-weak base negative resin-strong acid positive resin；
Feed liquid Jing Guo desalting processing is carried out through quadruple effect falling film evaporator to be concentrated in vacuo to 70%, vacuum 0.09MPa,
50 DEG C of feed temperature, hydrogenation oligosaccharide is made.
After testing, oligosaccharide is hydrogenated, component is as follows, is mass percent：
Sorbierite 3%, maltitol 5%, maltotriose alcohol 10%, maltotetraose alcohol 15%, more than maltopentaose alcohol
67%.
Embodiment 3
A kind of preparation method for hydrogenating oligosaccharide, comprises the following steps：
(1) using cornstarch as raw material, the Baume of starch milk 16 is adjusted, 20U ratio is added by every gram of cornstarch butt raw material
Example addition high temperature α α-amylases, are liquefied using secondary injection, and it is 105 DEG C to spray condensing temperature for the first time, second of injection liquefaction temperature
Spend for 130 DEG C, the ratio that 24U is then added in every gram of cornstarch butt raw material adds medium temperature amylase, under the conditions of 80 DEG C
Saccharification 8 hours, oligosaccharide is made；
(2) add two-pass reverse osmosis water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 65%, be warming up to
55 DEG C, using calcium type resin cation as separation resin, using two-pass reverse osmosis water as eluant, eluent, material water volume ratio is 1:1.25 mistake
Post separation, the oligomerization liquid glucose after purification is made；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 50%, sodium hydroxide adjusts pH
Value adds Raney's nickel catalyst to 7.8, by the 0.5% of feed liquid quality, excludes air 3 times with nitrogen, is then excluded again with hydrogen
Nitrogen, density of hydrogen is reached more than 99%, under conditions of Hydrogen Vapor Pressure 8.2MPa, 130 DEG C of temperature, start high pressure sealing and stir
Device is mixed, rotating speed 220r/min, constantly hydrogenation keep Hydrogen Vapor Pressure, promote hydro-reduction to act on, be catalyzed through Raney's nickel catalyst
Hydrogenation reaction 4.5h, when being passed through hydrogen and no longer being absorbed, content of reducing sugar is determined with 3.5- dinitrosalicylic Acid Colorimetries, when
When reduced sugar reaches 0.5wt%, terminating reaction, high-purity hydrogenation oligosaccharide is made；
(4) activated carbon is added in the ratio of feed liquid butt quality 1% into high-purity hydrogenation oligosaccharide made from step (3)
Decoloring reaction 40min, is then filtered through plate and frame filter press；Then with the flow velocity of 3 times of resin volume/hours, in 35 DEG C of temperature
Under the conditions of, desalting processing is once carried out by strong acid positive resin-weak base negative resin-strong acid positive resin；
Feed liquid Jing Guo desalting processing is carried out through quadruple effect falling film evaporator to be concentrated in vacuo to 75%, vacuum 0.06MPa,
85 DEG C of feed temperature, hydrogenation oligosaccharide is made.
After testing, oligosaccharide is hydrogenated, component is as follows, is mass percent：
Sorbierite 5%, maltitol 6%, maltotriose alcohol 10%, maltotetraose alcohol 13%, more than maltopentaose alcohol
66%.
Comparative example 1
Chinese patent literature CN104136621A (application number 201380007104.9) discloses a kind of for preparing solidification
Or the method for crystal maltitol.The product finally given according to the preparation method is detected, it is as a result as follows：
Sorbierite 1.1%, maltitol 95.8%, maltotriose alcohol 1.5%, maltotetraose alcohol 1.2%, other 0.4%.
Comparative example 2
A kind of preparation method for hydrogenating oligosaccharide, comprises the following steps：
(1) using cornstarch as raw material, the Baume degrees of starch milk 17 is adjusted, in every gram of cornstarch butt raw material 15U ratio
High temperature α α-amylases are added, are liquefied using secondary injection, it is 110 DEG C to spray condensing temperature for the first time, sprays condensing temperature for the second time
For 130 DEG C, the ratio that 18U is then added in every gram of cornstarch butt raw material adds fungal amylase, sugared under the conditions of 60 DEG C
Change 6 hours, oligosaccharide is made；
(2) add two-pass reverse osmosis water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 55%, be warming up to
50 DEG C, using calcium type resin cation as separation resin, using two-pass reverse osmosis water as eluant, eluent, material-water ratio 1：1.5, post separation is crossed,
The oligomerization liquid glucose after purification is made；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 40%, sodium hydroxide adjusts pH
Value adds Raney's nickel catalyst to 8.2, by the 0.5% of feed liquid quality, excludes air 3 times with nitrogen, is then excluded again with hydrogen
Nitrogen, density of hydrogen is reached more than 99%, under conditions of Hydrogen Vapor Pressure 8.2MPa, 130 DEG C of temperature, start high pressure sealing and stir
Device is mixed, rotating speed 220r/min, constantly hydrogenation keep Hydrogen Vapor Pressure, promote hydro-reduction to act on, be catalyzed through Raney's nickel catalyst
Hydrogenation reaction 2.5h, when being passed through hydrogen and no longer being absorbed, content of reducing sugar is determined with 3.5- dinitrosalicylic Acid Colorimetries, when
When reduced sugar reaches 0.5wt%, terminating reaction, high-purity hydrogenation oligosaccharide is made；
(4) activated carbon is added in the ratio of feed liquid butt quality 1% into high-purity hydrogenation oligosaccharide made from step (3)
Decoloring reaction 20min, is then filtered through plate and frame filter press；Then with the flow velocity of 3 times of resin volume/hours, in 55 DEG C of temperature
Under the conditions of, desalting processing is once carried out by strong acid positive resin-weak base negative resin-strong acid positive resin；
Feed liquid Jing Guo desalting processing is carried out through quadruple effect falling film evaporator to be concentrated in vacuo to 70%, vacuum 0.09MPa,
50 DEG C of feed temperature, hydrogenation oligosaccharide is made.
After testing, oligosaccharide is hydrogenated, component is as follows, is mass percent：
Sorbierite 20%, maltitol 45%, maltotriose alcohol 10%, maltotetraose alcohol 7%, more than maltopentaose alcohol
18%.
Experimental example
Embodiment 1, embodiment 2, the gained of embodiment 3 hydrogenation oligosaccharide and the products obtained therefrom of comparative example 1 are applied to the moon respectively
In cake preparation process, other raw material all sames used are prepared, difference is that moon cake 1, moon cake 2, moon cake 3 and moon cake 4 are distinguished
Embodiment 1, embodiment 2, embodiment 3 and the products obtained therefrom of comparative example 1 of phase homogenous quantities are added, adding proportion is moon cake quality
25%.
The assay method of sugariness；With sucrose come the benchmark made comparisons, and its sweet taste multiple is defined as 1.First, sugarcane
Sugar is made into less than 1% standard comparing solution, it would be desirable to which the material for determining sweet taste multiple is dissolved in water, and constantly changing, it is dense
Two kinds of solution are subjected to trial test contrast while spending, make level of sweetness that measured object is presented in a certain concentration just with standard sugarcane
Sugar aqueous solution is identical, now, standard sucrose concentration of aqueous solution and measured object concentration value ratio, be exactly measured object sweet taste multiple.
The detection reference of moisture retention《The measure of moisture in GB 5009.3-2010 national food safety standard food》In
The regulation of one method direct drying method is carried out, and the moisture determined after 24h is higher, and explanation moisture retention is better.
The detection of heat
Shelf-life detection is carried out according to method as defined in the acceleration shelf life method of testing (ASLT) commonly used in food,
After testing, the coherent detection index of prepared moon cake is as shown in table 1：
Table 1
It can be seen that from upper table, embodiment 1, embodiment 2, the products obtained therefrom of embodiment 3 are accounted for mainly by high molecular alcohol mixture
The hydrogenation oligosaccharide composition of composition, and the products obtained therefrom of comparative example 1 is mainly made up of maltitol.Because hydrogenation oligosaccharide has
Emulsion stability, taste is similar with fat, can be used as fat substitute, thus moon cake 1, moon cake 2, moon cake 3 compared with moon cake 4 not
Only calorie value reduces a lot, and compared with table sugar alcohol, mouthfeel is soft, and sugariness is low；In animal body it is difficult to by mould, yeast
Bacterium and lactic acid bacteria utilize, and do not influence blood glucose rise and insulin level, have good hygroscopicity and performance of keeping humidity, and have compared with
Good heat-resisting, acid resistance, therefore obtained moon cake sweet taste is pure gentle, have outside anti-caries and the traditional advantage such as low in calories,
Also with low sugariness, humidity-preserving type and shelf-life etc. also with suitable advantage.
Claims (10)
1. one kind hydrogenation oligosaccharide, it is characterised in that component is as follows, is mass percent：
Sorbierite 0.1~8%, maltitol 0.1~12%, maltotriose alcohol 5~20%, maltotetraose alcohol 11~24%, wheat
More than the sugar alcohol of bud five 43~84%.
2. hydrogenation oligosaccharide as claimed in claim 1, it is characterised in that the hydrogenation oligosaccharide, component is as follows, is quality
Percentage：
Sorbierite 2~5%, maltitol 3~6%, maltotriose alcohol 10~20%, maltotetraose alcohol 13~24%, malt five
More than sugar alcohol 57~72%.
3. the preparation method of the hydrogenation oligosaccharide of claim 1 or 2, it is characterised in that comprise the following steps：
(1) using cornstarch as raw material, the Baume degrees of starch milk 16~17 is adjusted, adds high temperature α α-amylase transient liquefactions, adds medium temperature
Starch enzymatic conversion, oligosaccharide is made；
(2) add water to adjust syrup weight/mass percentage composition oligosaccharide made from step (1) to be 55~65%, be warming up to 55~65 DEG C,
Using calcium type resin cation as separation resin, material water volume ratio is 1:(1~1.5), post separation is crossed, the oligosaccharide after purification is made
Liquid；
(3) the oligomerization liquid glucose after the obtained purification of step (2) is adjusted into syrup weight/mass percentage composition 40~50%, adjusts pH value to 7.8
~8.2, under conditions of 8.0~8.4MPa of Hydrogen Vapor Pressure, 128~132 DEG C of temperature, through Raney's nickel catalyst catalytic hydrogenation reaction
2.5~4.5h, high-purity hydrogenation oligosaccharide is made；
(4) by high-purity made from step (3) hydrogenate oligosaccharide through decolourizing, filtering, desalination, vacuum concentration, hydrogenation oligomerization is made
Sugar.
4. preparation method as claimed in claim 3, it is characterised in that in the step (1), the addition of high temperature α α-amylases
10~20U is added for every gram of cornstarch butt raw material.
5. preparation method as claimed in claim 3, it is characterised in that in the step (1), liquefaction condition is to use secondary spray
Liquefaction is penetrated, it is 100~110 DEG C to spray condensing temperature for the first time, and it is 121~140 DEG C that second, which is sprayed condensing temperature,.
6. preparation method as claimed in claim 3, it is characterised in that in the step (1), the addition of medium temperature amylase is
Every gram of cornstarch butt raw material adds 12~24U；
Preferably, in the step (1), saccharification condition is 50~80 DEG C, 3~8 hours time.
7. preparation method as claimed in claim 3, it is characterised in that in the step (2), the water is two-pass reverse osmosis
Water；The eluant, eluent of calcium type resin cation is two-pass reverse osmosis water.
8. preparation method as claimed in claim 3, it is characterised in that in the step (3), the addition of Raney's nickel catalyst
For the 0.4~0.6% of feed liquid quality；It is further preferred that the addition of the Raney's nickel catalyst is feed liquid quality
0.5%；
Preferably, in the step (3), pH value regulator is sodium hydroxide.
9. preparation method as claimed in claim 3, it is characterised in that in the step (4), decolourize to account for feed liquid butt to use
The activated carbon of quality 1% carries out 20~40min of decoloring reaction；It is filtered into and is filtered using plate and frame filter press；
Preferably, in the step (4), desalination is ion exchange desalination, and flow velocity is：3 times of resin volume/hours, temperature 35~
55 DEG C, pass sequentially through strong acid positive resin-weak base negative resin-strong acid positive resin.
10. preparation method as claimed in claim 3, it is characterised in that in the step (4), be concentrated in vacuo as using quadruple effect
Falling film evaporator is concentrated in vacuo, and condition is：0.06~0.09MPa of vacuum, 50~85 DEG C of feed temperature, is concentrated into feed liquid
Concentration is 70~75%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502037A (en) * | 2021-08-16 | 2021-10-15 | 苏州科宁多元醇有限公司 | Novel polyhydric sugar alcohol plasticizer, preparation method thereof and application thereof in preparation of starch-based degradable material |
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