CN108546723A - Method for preparing feed-grade fructooligosaccharide containing trace elements by taking sugarcane juice as raw material - Google Patents
Method for preparing feed-grade fructooligosaccharide containing trace elements by taking sugarcane juice as raw material Download PDFInfo
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- CN108546723A CN108546723A CN201810357480.5A CN201810357480A CN108546723A CN 108546723 A CN108546723 A CN 108546723A CN 201810357480 A CN201810357480 A CN 201810357480A CN 108546723 A CN108546723 A CN 108546723A
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- fructooligosaccharide
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- cane juice
- enzymatic conversion
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- FTSSQIKWUOOEGC-RULYVFMPSA-N fructooligosaccharide Chemical compound OC[C@H]1O[C@@](CO)(OC[C@@]2(OC[C@@]3(OC[C@@]4(OC[C@@]5(OC[C@@]6(OC[C@@]7(OC[C@@]8(OC[C@@]9(OC[C@@]%10(OC[C@@]%11(O[C@H]%12O[C@H](CO)[C@@H](O)[C@H](O)[C@H]%12O)O[C@H](CO)[C@@H](O)[C@@H]%11O)O[C@H](CO)[C@@H](O)[C@@H]%10O)O[C@H](CO)[C@@H](O)[C@@H]9O)O[C@H](CO)[C@@H](O)[C@@H]8O)O[C@H](CO)[C@@H](O)[C@@H]7O)O[C@H](CO)[C@@H](O)[C@@H]6O)O[C@H](CO)[C@@H](O)[C@@H]5O)O[C@H](CO)[C@@H](O)[C@@H]4O)O[C@H](CO)[C@@H](O)[C@@H]3O)O[C@H](CO)[C@@H](O)[C@@H]2O)[C@@H](O)[C@@H]1O FTSSQIKWUOOEGC-RULYVFMPSA-N 0.000 title claims abstract description 67
- 229940107187 fructooligosaccharide Drugs 0.000 title claims abstract description 67
- 240000000111 Saccharum officinarum Species 0.000 title claims abstract description 53
- 235000007201 Saccharum officinarum Nutrition 0.000 title claims abstract description 53
- 235000011389 fruit/vegetable juice Nutrition 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002994 raw material Substances 0.000 title claims abstract description 21
- 235000013619 trace mineral Nutrition 0.000 title claims abstract description 21
- 239000011573 trace mineral Substances 0.000 title claims abstract description 21
- 230000002255 enzymatic effect Effects 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000006188 syrup Substances 0.000 claims abstract description 8
- 235000020357 syrup Nutrition 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 4
- 238000001291 vacuum drying Methods 0.000 claims abstract description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 21
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 108090000790 Enzymes Proteins 0.000 abstract description 3
- 102000004190 Enzymes Human genes 0.000 abstract description 3
- 108010042889 Inulosucrase Proteins 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000035484 reaction time Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012295 chemical reaction liquid Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 229930006000 Sucrose Natural products 0.000 description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 4
- 239000005720 sucrose Substances 0.000 description 4
- 229930091371 Fructose Natural products 0.000 description 2
- 239000005715 Fructose Substances 0.000 description 2
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 description 2
- 240000008892 Helianthus tuberosus Species 0.000 description 2
- 235000003230 Helianthus tuberosus Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- -1 FTase Proteins 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/18—Preparation of compounds containing saccharide radicals produced by the action of a glycosyl transferase, e.g. alpha-, beta- or gamma-cyclodextrins
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention discloses a method for preparing feed-grade fructooligosaccharide containing trace elements by taking sugarcane juice as a raw material, which comprises the steps of directly squeezing sugarcane into the sugarcane juice, filtering the sugarcane juice to remove impurities, and then carrying out pretreatment; adding fructosyltransferase to carry out enzymatic conversion reaction to generate fructooligosaccharide sugar solution, wherein the temperature of the enzymatic conversion reaction is 40-60 ℃, and the enzymatic conversion reaction time is 12-26 h; stopping the enzyme conversion reaction when the proportion of the fructooligosaccharide sugar liquid in the solid matter reaches 35-45%, and separating the fructosyltransferase by using a rotary vibrating screen to obtain the fructooligosaccharide sugar liquid; and (3) carrying out vacuum concentration on the obtained fructooligosaccharide sugar solution to obtain fructooligosaccharide syrup with the purity of more than 35 percent or carrying out vacuum drying treatment on the fructooligosaccharide syrup to prepare solid fructooligosaccharide powder with the water content of less than 5 percent. Compared with the prior art, the invention has the advantages of cheap and easily-obtained raw materials in the whole production process, simplified and easily-implemented process, convenient operation and low cost, and can meet the requirements of industrial mass production; the production cost of fructooligosaccharide for feed is reduced; reducing pollution and fully retaining trace elements.
Description
Technical field
The present invention relates to fructooligosaccharide production technical fields, especially a kind of to be prepared containing trace element by raw material of sugar-cane juice
Feed grade fructooligosaccharide method.
Background technology
The domestic feed grade fructooligosaccharide for preparing is to use sucrose, jerusalem artichoke or Jerusalem artichoke for raw material at present, and these preparation methods lack
Point is that the raw material of use is somewhat expensive or complex process, production cost are higher, and energy consumption waste is big；Production process generates the productions such as molasses
Object wastes plant-derived trace element, increases environmental pollution.
Invention content
The invention aims to overcome the deficiency of the above-mentioned prior art, a kind of prepared as raw material using sugar-cane juice is provided and is contained
The method of the feed grade fructooligosaccharide of trace element, this method is fully to sugar-cane juice all of retaining original trace element, no dirt
Dye；Improve sugar industry deep processing, low production cost.
In order to achieve the above objectives, the present invention is implemented according to following technical scheme：
In the method that sugar-cane juice prepares the feed grade fructooligosaccharide containing trace element as raw material, include the following steps：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing；
Fructooligosaccharide sugar is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction
Liquid, 40 DEG C~60 DEG C of enzymatic conversion reaction temperature, 12h~26h between enzymatic conversion is seasonable；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 35~45%, stops enzymatic conversion reaction, shaken with rotation
Transfructosylase is carried out isolated fructooligosaccharide liquid glucose by sieve, and the transfructosylase refrigeration after separation is spare；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.09~-
When 0.05MPa, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 70 DEG C in 0.01~0.3Mpa
~95 DEG C carry out being concentrated into solution concentration and reach 65~75%DS, obtain the fructooligosaccharide syrup that purity is more than 35%.
In addition, technical scheme of the present invention can also include Step 5: fructooligosaccharide slurry is passed through vacuum drying treatment, preparation
It is less than 5% solid fructooligosaccharide powder at moisture.
As the preferred embodiment of the present invention, the pretreatment in the step 1 is：By a concentration of adjustment 20 of sugar-cane juice~
50Brix, and it is 4.0~8.0 to adjust pH value, temperature is 50 DEG C~95 DEG C.
As the preferred embodiment of the present invention, the pH value of sugar-cane juice is adjusted in the step 1 with sodium bicarbonate
As the preferred embodiment of the present invention, 12h between enzymatic conversion is seasonable in the step 2~for 24 hours.
As the preferred embodiment of the present invention, 16h~26h between enzymatic conversion is seasonable in the step 2.
Compared with prior art, the entire production process raw material of the present invention is inexpensive easily takes, and technique simplification is easy, easy to operate,
It is of low cost, the requirement of industrialized production can be met；Reduce feeding fructooligosaccharide production cost；Reduce pollution, trace element entirely
Portion retains.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Specific implementation mode
With reference to specific embodiment, the invention will be further described, in the illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
The present embodiment be after pretreatment sugar-cane juice by transfructosylase (Fructosyltransferase, FTase,
Enzyme classification number is【EC、2、4、l、91】) catalysing sucrose molecule generation fructooligosaccharide, wherein sucrose (being indicated with symbol GF) is by glucose
(being indicated with symbol G) and fructose (being indicated with symbol F) are formed, and solution passes through the effect of above-mentioned enzyme, each sucrose molecule
Fructooligosaccharide GF2, GF3, GF4 are formed in conjunction with 2~4 fructose molecules, specific embodiment is as follows.
Embodiment 1
As shown in Figure 1, the side for preparing the feed grade fructooligosaccharide containing trace element using sugar-cane juice as raw material of the present embodiment
Method includes the following steps：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing, pre-processes specific side
Method is：By a concentration of adjustment 20Brix of sugar-cane juice, it is 4.0 to be used in combination sodium bicarbonate to adjust pH value, and temperature is 50 DEG C；
Fructooligosaccharide sugar is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction
Liquid, 40 DEG C of enzymatic conversion reaction temperature, 12h between enzymatic conversion is seasonable；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 35%, stop enzymatic conversion reaction, it will with spin vibration sieve
Transfructosylase carries out isolated fructooligosaccharide liquid glucose, and the transfructosylase refrigeration after separation is spare；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.09MPa
When, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 70 DEG C DEG C and be concentrated into 0.01Mpa
Solution concentration reaches 65%DS, obtains the fructooligosaccharide syrup that purity is more than 35%.
Embodiment 2
As shown in Figure 1, the side for preparing the feed grade fructooligosaccharide containing trace element using sugar-cane juice as raw material of the present embodiment
Method includes the following steps：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing, pre-processes specific side
Method is：By a concentration of adjustment 50Brix of sugar-cane juice, it is 8.0 to be used in combination sodium bicarbonate to adjust pH value, and temperature is 95 DEG C；
Fructooligosaccharide sugar is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction
Liquid, enzymatic conversion reaction temperature 60 C, between enzymatic conversion is seasonable for 24 hours；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 45%, stop enzymatic conversion reaction, it will with spin vibration sieve
Transfructosylase carries out isolated fructooligosaccharide liquid glucose, and the transfructosylase refrigeration after separation is spare；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.05MPa
When, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 95 DEG C and carry out being concentrated into solution in 0.3Mpa
Concentration reaches 75%DS, obtains the fructooligosaccharide syrup that purity is more than 35%.
Embodiment 3
As shown in Figure 1, the side for preparing the feed grade fructooligosaccharide containing trace element using sugar-cane juice as raw material of the present embodiment
Method includes the following steps：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing, pre-processes specific side
Method is：By a concentration of adjustment 35Brix of sugar-cane juice, it is 5 to be used in combination sodium bicarbonate to adjust pH value, and temperature is 75 DEG C；
Fructooligosaccharide sugar is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction
Liquid, enzymatic conversion reaction temperature 50 C, 16h between enzymatic conversion is seasonable；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 40%, stop enzymatic conversion reaction, it will with spin vibration sieve
Transfructosylase carries out isolated fructooligosaccharide liquid glucose, and the transfructosylase refrigeration after separation is spare；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.07MPa
When, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 80 DEG C and carry out being concentrated into solution in 0.1Mpa
Concentration reaches 70%DS, obtains the fructooligosaccharide syrup that purity is more than 35%.
Embodiment 4
As shown in Figure 1, the side for preparing the feed grade fructooligosaccharide containing trace element using sugar-cane juice as raw material of the present embodiment
Method includes the following steps：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing, pre-processes specific side
Method is：By a concentration of adjustment 35Brix of sugar-cane juice, it is 5 to be used in combination sodium bicarbonate to adjust pH value, and temperature is 75 DEG C；
Fructooligosaccharide sugar is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction
Liquid, enzymatic conversion reaction temperature 50 C, 26h between enzymatic conversion is seasonable；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 40%, stop enzymatic conversion reaction, it will with spin vibration sieve
Transfructosylase carries out isolated fructooligosaccharide liquid glucose, and the transfructosylase refrigeration after separation is spare；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.07MPa
When, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 80 DEG C and carry out being concentrated into solution in 0.1Mpa
Concentration reaches 70%DS, obtains the fructooligosaccharide syrup that purity is more than 35%.
Embodiment 5
After obtaining the concentration of fructooligosaccharide liquid glucose, fructooligosaccharide slurry is passed through into vacuum drying treatment, moisture is prepared into and is less than
5% solid fructooligosaccharide powder.
Summary, the entire production process raw material of the present invention is inexpensive easily to be taken, and technique simplification is easy, easy to operate, of low cost, can
Meet the requirement of industrialized production；Reduce feeding fructooligosaccharide production cost；Reduce pollution, trace element all retains.
Technical scheme of the present invention is not limited to the limitation of above-mentioned specific embodiment, every to do according to the technique and scheme of the present invention
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (6)
1. the method for preparing the feed grade fructooligosaccharide containing trace element as raw material using sugar-cane juice, which is characterized in that including following
Step：
Step 1: sugarcane is directly squeezed into sugar-cane juice, pre-processed after sugar-cane juice filtering and impurity removing；
Fructooligosaccharide liquid glucose is generated Step 2: transfructosylase is added into pretreated sugar-cane juice and carries out enzymatic conversion reaction,
40 DEG C~60 DEG C of enzymatic conversion reaction temperature, 12h~26h between enzymatic conversion is seasonable；
Step 3: when the ratio that fructooligosaccharide liquid glucose accounts for solid content reaches 35~45%, stop enzymatic conversion reaction, it will with spin vibration sieve
Transfructosylase carries out isolated fructooligosaccharide liquid glucose；
Step 4: will obtain fructooligosaccharide liquid glucose is added inspissator, start inspissator, when inspissator vacuum reaches -0.09~-
When 0.05MPa, steam valve is opened, working steam pressure control at this time makes evaporating temperature reach 70 DEG C in 0.01~0.3Mpa
~95 DEG C carry out being concentrated into solution concentration and reach 65~75%DS, obtain the fructooligosaccharide syrup that purity is more than 35%.
2. the method according to claim 1 that the feed grade fructooligosaccharide containing trace element is prepared as raw material using sugar-cane juice,
It is characterized in that：Further include being prepared into moisture consolidating less than 5% Step 5: by fructooligosaccharide slurry by vacuum drying treatment
Body fructooligosaccharide powder.
3. the method according to claim 1 that the feed grade fructooligosaccharide containing trace element is prepared as raw material using sugar-cane juice,
It is characterized in that：Pretreatment in the step 1 is：By a concentration of 20~50Brix of adjustment of sugar-cane juice, and adjusts pH value and be
4.0~8.0, temperature is 50 DEG C~95 DEG C.
4. the method according to claim 1 that the feed grade fructooligosaccharide containing trace element is prepared as raw material using sugar-cane juice,
It is characterized in that：The pH value of sugar-cane juice is adjusted in the step 1 with sodium bicarbonate.
5. the method according to claim 1 that the feed grade fructooligosaccharide containing trace element is prepared as raw material using sugar-cane juice,
It is characterized in that：12h between enzymatic conversion is seasonable in the step 2~for 24 hours.
6. the method according to claim 1 that the feed grade fructooligosaccharide containing trace element is prepared as raw material using sugar-cane juice,
It is characterized in that：16h~26h between enzymatic conversion is seasonable in the step 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810357480.5A CN108546723A (en) | 2018-04-20 | 2018-04-20 | Method for preparing feed-grade fructooligosaccharide containing trace elements by taking sugarcane juice as raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810357480.5A CN108546723A (en) | 2018-04-20 | 2018-04-20 | Method for preparing feed-grade fructooligosaccharide containing trace elements by taking sugarcane juice as raw material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110122671A (en) * | 2019-05-10 | 2019-08-16 | 味氏（广东）生物科技股份有限公司 | The preparation method of oligosaccharide kind feed addictive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103053794A (en) * | 2013-01-24 | 2013-04-24 | 量子高科(中国)生物股份有限公司 | Method for preparing prebiotics fermented feed by using bagasse and molasses |
| CN103074397A (en) * | 2013-01-24 | 2013-05-01 | 量子高科(中国)生物股份有限公司 | Method for preparing fructo oligosaccharides by using sugarcane juices |
| CN103333934A (en) * | 2013-06-17 | 2013-10-02 | 量子高科(中国)生物股份有限公司 | A kind of preparation method of sugarcane oligofructose goods |
-
2018
- 2018-04-20 CN CN201810357480.5A patent/CN108546723A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103053794A (en) * | 2013-01-24 | 2013-04-24 | 量子高科(中国)生物股份有限公司 | Method for preparing prebiotics fermented feed by using bagasse and molasses |
| CN103074397A (en) * | 2013-01-24 | 2013-05-01 | 量子高科(中国)生物股份有限公司 | Method for preparing fructo oligosaccharides by using sugarcane juices |
| CN103333934A (en) * | 2013-06-17 | 2013-10-02 | 量子高科(中国)生物股份有限公司 | A kind of preparation method of sugarcane oligofructose goods |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110122671A (en) * | 2019-05-10 | 2019-08-16 | 味氏（广东）生物科技股份有限公司 | The preparation method of oligosaccharide kind feed addictive |
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