CN109744316A - A kind of demulsification sugar-milk preparation method based on separation membrane technology - Google Patents

A kind of demulsification sugar-milk preparation method based on separation membrane technology Download PDF

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CN109744316A
CN109744316A CN201910058861.8A CN201910058861A CN109744316A CN 109744316 A CN109744316 A CN 109744316A CN 201910058861 A CN201910058861 A CN 201910058861A CN 109744316 A CN109744316 A CN 109744316A
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dialysis
lactose
permeate
milk
inorganic salts
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潘杰峰
张宏杰
沈江南
赵雪婷
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The invention discloses a kind of preparation methods of demulsification sugar-milk based on separation membrane technology, pass through coupling micro-filtration, ultrafiltration, electrodialysis, nanofiltration these four membrane technologies, most components in milk are retained by micro-filtration and ultrafiltration first, the solution of transmission is the aqueous solution containing lactose, inorganic salts, after recycling inorganic salts with electrodialysis, obtain the desalination solution containing lactose and a small amount of inorganic salts, the desalination solution is after journey nanofiltration separation to retain lactose, component recombination other than lactose is obtained de-lactosed milk powder by spray drying by the removing for completing lactose.By means of the present invention, lactose retention up to 95.85%, the present invention not only realizes the production of de-lactosed milk powder, the water added in production process simultaneously can effective recycling and reusing, lactose also passes through nanofiltration recycling, i.e. this method can make environmentally protective in whole process, generate the waste with raw material without by-product, and process is not added chemical substance and will not be impacted to the mouthfeel of milk.

Description

A kind of demulsification sugar-milk preparation method based on separation membrane technology
Technical field
The present invention relates to a kind of demulsification sugar-milk preparation methods based on separation membrane technology.
Background technique
Protein and minerals rich in milk, and milk is the best source of human calcium, is known as " white blood Liquid ".However, there are this lactose, this is extremely inconvenient for the crowd for largely having lactose intolerance in milk.Due to patient Enteron aisle in cannot secrete the enzyme to reduce lactose, and make lactose digestion, absorb, be human body used in.Lactose can be in enteron aisle by thin Bacterium, which is decomposed, becomes lactic acid, to destroy the alkaline environment of enteron aisle, and intestinal secretion is made to go out a large amount of alkaline digest liquid to neutralize cream Acid.So being easy to happen laxativeness.Demulsification sugar-milk on current market, which substantially passes through enzymatic hydrolysis lactose method, is worth de- The disadvantages of lactose milk, however involving great expense due to enzyme, and free lactase difficulty recycling, enzyme easy in inactivation.
Summary of the invention
For above-mentioned technical problem of the existing technology, the purpose of the present invention is to provide one kind based on separation membrane technology Demulsification sugar-milk preparation method.
The preparation method of a kind of de-lactosed milk powder based on separation membrane technology, it is characterised in that including following step It is rapid:
1) milk after pasteurize is subjected to dialysis for several times by microfiltration membranes and sloughs fatty ingredient, obtain containing it is fatty, First trapped fluid of casein micelles and the first permeate containing lactalbumin, lactose, inorganic salts, small molecule cellulose;
2) the first permeate obtained by step 1) is subjected to dialysis for several times by ultrafiltration membrane and retains lactalbumin, obtained containing whey egg The second white trapped fluid and the second permeate containing lactose, inorganic salts, small molecule cellulose;
3) the second permeate obtained by step 2 is subjected to desalting processing by electrodialysis, obtains the concentrate of enrichment inorganic salts and contained There is the desalination solution of lactose, small molecule cellulose, contains in the desalination solution and do not remove complete inorganic salts on a small quantity;
4) the separating again by nanofiltration membrane progress inorganic salts and lactose of desalination solution obtained by step 3), obtains containing lactose, small point The third trapped fluid of subbundle element and third permeate containing a small amount of inorganic salts, the third permeate can be re-circulated to step In rapid ultrafiltration dialysis 2), inorganic salts are recycled;
5) concentrate obtained by the second trapped fluid obtained by the first trapped fluid obtained by step 1), step 2 and step 3) is merged To demulsification sugar-milk, the demulsification sugar-milk is obtained into de-lactosed milk powder by spray drying.
A kind of preparation method of de-lactosed milk powder based on separation membrane technology, it is characterised in that step 1) process bar Family name sterilization after milk by microfiltration membranes carry out dialysis number be 5 times, detailed process is as follows: the milk pass through microfiltration membranes into When preceding 4 dialysis of row, the trapped fluid that each dialysis obtains is diluted with 1.5 ~ 5 times of deionized water, then passes through microfiltration membranes Dialysis next time is carried out, wherein milk is without dilution when the 1st dialysis;Merging the permeate that 1 ~ 5 dialysis obtains is institute The first permeate containing lactalbumin, lactose, inorganic salts, small molecule cellulose stated, the trapped fluid obtained after the 5th dialysis As described the first trapped fluid containing fat, casein micelles.
The preparation method of a kind of de-lactosed milk powder based on separation membrane technology, it is characterised in that step 2 first is saturating It is 4 times that liquid, which is crossed, by the number that ultrafiltration membrane carries out dialysis, and detailed process is as follows: before first permeate is carried out by ultrafiltration membrane When 3 dialysis, the trapped fluid that each dialysis obtains is diluted with 1.5-5 times of deionized water, then is carried out by ultrafiltration membrane Dialysis next time, wherein the first permeate is without dilution when the 1st dialysis;Merging the permeate that 1 ~ 4 dialysis obtains is Second permeate containing lactose, inorganic salts, small molecule cellulose, the trapped fluid obtained after the 4th dialysis is institute The second trapped fluid containing lactalbumin stated.
The preparation method of a kind of de-lactosed milk powder based on separation membrane technology, it is characterised in that micro- in step 1) Filter membrane is hollow-fibre membrane, ceramic membrane, plate membrane or rolled membrane module.
The preparation method of a kind of de-lactosed milk powder based on separation membrane technology, it is characterised in that super in step 2 Filter membrane is plate membrane, rolled film, hollow-fibre membrane or ceramic film component.
A kind of preparation method of de-lactosed milk powder based on separation membrane technology, it is characterised in that receiving in step 4) Filter membrane is plate membrane or rolled membrane module.
The preparation method of a kind of de-lactosed milk powder based on separation membrane technology, it is characterised in that de- obtained by step 5) The lactose residual quantity of lactose milk powder product is below 5%.
Compared with the existing technology, the beneficial effect that the present invention obtains is:
The present invention using a kind of completely new demulsification sugar-milk preparation method, by coupling micro-filtration, ultrafiltration, electrodialysis, nanofiltration this Four kinds of membrane technologies, by means of the present invention lactose retention are up to 95.85%, and the present invention not only realizes the life of de-lactosed milk powder Produce, at the same the water added in production process can effective recycling and reusing, lactose also pass through nanofiltration recycling, i.e., this method can make Whole process is environmentally protective, without by-product generate with the waste of raw material, and process do not add chemical substance will not be to milk Mouthfeel impact.
Specific embodiment
The preferred embodiment of the present invention is described in detail below, so that contents of the present invention feature is easy to by this field In researcher understand, to make more full and accurate define to protection scope of the present invention.
In following embodiment, the milk raw material of use is available from Zhejiang beauty and is good for dairy industry Co., Ltd after pasteurize Milk.The testing standard of lactose concn is GB/T5413.5-2010.
Protein concentration uses Coomassie brilliant blue test method, test process are as follows: by the sample liquid containing protein and examines horse After the mixing of this brilliant blue reagent, mixed liquor tests light absorption value by spectrophotometer, and then tests out content (this method of protein Test the total content of all proteins).
Embodiment 1
Step 1: by milk of the 968g after pasteurize by PVC hollow-fibre membrane that molecular cut off is 100KDa into Fatty ingredient is sloughed in 5 dialysis of row, when the milk carries out preceding 4 dialysis by PVC hollow-fibre membrane, what each dialysis obtained Trapped fluid is diluted with 738g deionized water, then carries out dialysis next time by PVC hollow-fibre membrane, wherein the 1st infiltration Milk is without dilution when analysis (when carrying out preceding 4 dialysis, each dialysis obtains trapped fluid about 200g);Merge 1 ~ 5 dialysis Obtained permeate (total amount after permeate merges is 3256.8g), obtains containing lactalbumin, lactose, inorganic salts, small molecule First permeate of the relatively small substance such as cellulose, dietary fiber;The trapped fluid 662g obtained after the 5th dialysis is collected, i.e., For the first trapped fluid containing fat, casein micelles;
Step 2: the PES plate membrane that the first permeate of 3256.8g that step 1 obtains is 10KDa with molecular cut off is existed Carried out under 0.1mpa pressure and 6L/min flow velocity 4 dialysis retention lactalbumin, first permeate by PES plate membrane into Row 3 times dialysis when, the trapped fluid that each dialysis obtains is diluted with 2379g deionized water, then by PES plate membrane into Row dialysis next time, wherein (when carrying out 3 times dialysis, each dialysis obtains the first permeate without dilution when the 1st dialysis Trapped fluid about 900g);Merge the permeate (total amount after permeate merges is 9230.3g) that 1 ~ 4 dialysis obtains, is contained There is the second permeate of lactose, inorganic salts, small molecule cellulose;The trapped fluid 1160.5g obtained after the 4th dialysis is collected, is obtained To the second trapped fluid containing the relatively large substance such as lactalbumin, dietary fiber;
Step 3: the second permeate of 9230.3g that step 2 obtains is subjected to electrodialysis desalination processing (operation item with electrodialysis plant Part are as follows: the second permeate is added in the diluting compartment of electrodialysis plant, and addition 500g is pure in the enriched chamber of electrodialysis plant Water, electrodialysis carry out under 30V voltage and 40L/h flow velocity), obtain the concentrate 797.6g(containing most of inorganic salts from Son migration intermediate ion can be migrated together with the water of part, therefore enriched chamber's quality will increase) and contain remaining lactose, small point The desalination solution 8901.6g of subbundle element and fraction inorganic salts;
Step 4: desalination solution that step 3 obtains is separated into (operating condition by what PA nanofiltration membrane carried out inorganic salts and lactose again Are as follows: pressure 10bar, flow velocity 7L/min, 25 ± 5 DEG C of temperature), obtain the third trapped fluid containing lactose, small molecule cellulose 886.3g(, that is, lactose concentrate is detected in lactose concentrate substantially without protein residues) and third containing a small amount of inorganic salts it is saturating Cross liquid 8015g(i.e. inorganic salt solution), the third permeate can be re-circulated to during the ultra-filtration and separation of step 2, with Inorganic salts are recycled;
Step 5: by step 1 containing containing lactalbumin, meals in fat, the first trapped fluid of casein micelles, step 2 The concentrate containing most of inorganic salts in second trapped fluid of the relatively large substance of food fiber etc., step 3 merges, and obtains To demulsification sugar-milk 2620.1g;
Step 6: demulsification sugar-milk obtained in step 5 being obtained into lactose quality by XINW-015 experiment type spray drier and is contained The de-lactosed milk powder 43.3g that amount is 0.16%.
Embodiment 2
Step 1: by milk of the 1936g after pasteurize by PVC hollow-fibre membrane that molecular cut off is 100KDa into Fatty ingredient is sloughed in 5 dialysis of row, when the milk carries out preceding 4 dialysis by PVC hollow-fibre membrane, what each dialysis obtained Trapped fluid is diluted with 1438g deionized water, then carries out dialysis next time by PVC hollow-fibre membrane, wherein the 1st infiltration Milk is without dilution when analysis (when carrying out preceding 4 dialysis, each dialysis obtains trapped fluid about 400g);Merge 1 ~ 5 dialysis Obtained permeate (total amount after permeate merges is 7018.6g), obtains containing lactalbumin, lactose, inorganic salts, small molecule First permeate of the relatively small substance such as cellulose, dietary fiber;The trapped fluid 663.4g obtained after the 5th dialysis is collected, As the first trapped fluid containing fat, casein micelles;
Step 2: the PES plate membrane that the first permeate of 7018.6g that step 1 obtains is 10KDa with molecular cut off is existed Carried out under 0.1mpa pressure and 6L/min flow velocity 4 dialysis retention lactalbumin, first permeate by PES plate membrane into Row 3 times dialysis when, the trapped fluid that each dialysis obtains is diluted with 4732g deionized water, then by PES plate membrane into Row dialysis next time, wherein (when carrying out 3 times dialysis, each dialysis obtains the first permeate without dilution when the 1st dialysis Trapped fluid about 1000g);Merge the permeate (total amount after permeate merges is 20057.6g) that 1 ~ 4 dialysis obtains, obtains The second permeate containing lactose, inorganic salts, small molecule cellulose;The trapped fluid 1153.7g obtained after the 4th dialysis is collected, Obtain the second trapped fluid containing the relatively large substance such as lactalbumin, dietary fiber;
Step 3: the second permeate of 20057.6g that step 2 obtains is subjected to electrodialysis desalination processing (operation with electrodialysis plant Condition are as follows: the second permeate is added in the diluting compartment of electrodialysis plant, and 500g is added in the enriched chamber of electrodialysis plant Pure water, electrodialysis carry out under 30V voltage and 40L/h flow velocity), it obtains the concentrate 800.7g containing most of inorganic salts and contains There is the desalination solution 19726.8g of remaining lactose, small molecule cellulose and fraction inorganic salts;
Step 4: desalination solution that step 3 obtains is separated into (operating condition by what PA nanofiltration membrane carried out inorganic salts and lactose again Are as follows: pressure 10bar, flow velocity 7L/min, 25 ± 5 DEG C of temperature), obtain the third trapped fluid containing lactose, small molecule cellulose 903.5g(, that is, lactose concentrate is detected in lactose concentrate substantially without protein residues) and third containing a small amount of inorganic salts it is saturating Cross liquid 18823.3g(i.e. inorganic salt solution), the third permeate can be re-circulated to during the ultra-filtration and separation of step 2, Inorganic salts to be recycled;
Step 5: by step 1 containing containing lactalbumin, meals in fat, the first trapped fluid of casein micelles, step 2 The concentrate containing most of inorganic salts in second trapped fluid of the relatively large substance of food fiber etc., step 3 merges, and obtains To demulsification sugar-milk 2617.8g;
Step 6: demulsification sugar-milk obtained in step 5 being obtained into lactose quality by XINW-015 experiment type spray drier and is contained The skimmed milk power 87.2g that amount is 0.17%.
Embodiment 3
Step 1: by milk of the 4840g after pasteurize by PVC hollow-fibre membrane that molecular cut off is 100KDa into Fatty ingredient is sloughed in 5 dialysis of row, when the milk carries out preceding 4 dialysis by PVC hollow-fibre membrane, what each dialysis obtained Trapped fluid is diluted with 3878g deionized water, then carries out dialysis next time by PVC hollow-fibre membrane, wherein the 1st infiltration Milk is without dilution when analysis (when carrying out preceding 4 dialysis, each dialysis obtains trapped fluid about 1000g);Merge 1 ~ 5 dialysis Obtained permeate (total amount after permeate merges is 18684.5g), obtains containing lactalbumin, lactose, inorganic salts, small point First permeate of the relatively small substances such as subbundle element, dietary fiber;The trapped fluid 1662g obtained after the 5th dialysis is collected, As the first trapped fluid containing fat, casein micelles;
Step 2: the PES plate membrane that the first permeate of 18684.5g that step 1 obtains is 10KDa with molecular cut off is existed Carried out under 0.1mpa pressure and 6L/min flow velocity 4 dialysis retention lactalbumin, first permeate by PES plate membrane into When row 3 times dialysis, the trapped fluid that each dialysis obtains is diluted with 12832g deionized water, then passes through PES plate membrane Dialysis next time is carried out, wherein (when carrying out 3 times dialysis, each dialysis obtains the first permeate without dilution when the 1st dialysis To trapped fluid about 1000g);Merge the permeate (total amount after permeate merges is 56003.8g) that 1 ~ 4 dialysis obtains, obtains To the second permeate containing lactose, inorganic salts, small molecule cellulose;Collect the trapped fluid obtained after the 4th dialysis 1173.4g obtains the second trapped fluid containing the relatively large substance such as lactalbumin, dietary fiber;
Step 3: the second permeate of 56003.8g that step 2 obtains is subjected to electrodialysis desalination processing (operation with electrodialysis plant Condition are as follows: the second permeate is added in the diluting compartment of electrodialysis plant, and 500g is added in the enriched chamber of electrodialysis plant Pure water, electrodialysis carry out under 30V voltage and 40L/h flow velocity), it obtains the concentrate 796.8g containing most of inorganic salts and contains There is the desalination solution 55677.8g of remaining lactose, small molecule cellulose and fraction inorganic salts;
Step 4: desalination solution that step 3 obtains is separated into (operating condition by what PA nanofiltration membrane carried out inorganic salts and lactose again Are as follows: pressure 10bar, flow velocity 7L/min, 25 ± 5 DEG C of temperature), obtain the third trapped fluid containing lactose, small molecule cellulose 916.7g(, that is, lactose concentrate is detected in lactose concentrate substantially without protein residues) and third containing a small amount of inorganic salts it is saturating Cross liquid 54761g(i.e. inorganic salt solution), the third permeate can be re-circulated to during the ultra-filtration and separation of step 2, with Inorganic salts are recycled;
Step 5: by step 1 containing containing lactalbumin, meals in fat, the first trapped fluid of casein micelles, step 2 The concentrate containing most of inorganic salts in second trapped fluid of the relatively large substance of food fiber etc., step 3 merges, and obtains To demulsification sugar-milk 3632.2g;
Step 6: demulsification sugar-milk obtained in step 5 being obtained into lactose quality by XINW-015 experiment type spray drier and is contained The skimmed milk power 214.5g that amount is 0.19%.

Claims (7)

1. a kind of preparation method of the de-lactosed milk powder based on separation membrane technology, it is characterised in that the following steps are included:
1) milk after pasteurize is subjected to dialysis for several times by microfiltration membranes and sloughs fatty ingredient, obtain containing it is fatty, First trapped fluid of casein micelles and the first permeate containing lactalbumin, lactose, inorganic salts, small molecule cellulose;
2) the first permeate obtained by step 1) is subjected to dialysis for several times by ultrafiltration membrane and retains lactalbumin, obtained containing whey egg The second white trapped fluid and the second permeate containing lactose, inorganic salts, small molecule cellulose;
3) the second permeate obtained by step 2 is subjected to desalting processing by electrodialysis, obtains the concentrate of enrichment inorganic salts and contained There is the desalination solution of lactose, small molecule cellulose, contains in the desalination solution and do not remove complete inorganic salts on a small quantity;
4) the separating again by nanofiltration membrane progress inorganic salts and lactose of desalination solution obtained by step 3), obtains containing lactose, small point The third trapped fluid of subbundle element and third permeate containing a small amount of inorganic salts, the third permeate can be re-circulated to step In rapid ultrafiltration dialysis 2), inorganic salts are recycled;
5) concentrate obtained by the second trapped fluid obtained by the first trapped fluid obtained by step 1), step 2 and step 3) is merged To demulsification sugar-milk, the demulsification sugar-milk is obtained into de-lactosed milk powder by spray drying.
2. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 1, it is characterised in that Milk of the step 1) after pasteurize is 5 times by the number that microfiltration membranes carry out dialysis, and detailed process is as follows: the milk When carrying out preceding 4 dialysis by microfiltration membranes, the trapped fluid that each dialysis obtains is diluted with 1.5 ~ 5 times of deionized water, Dialysis next time is carried out by microfiltration membranes again, wherein milk is without dilution when the 1st dialysis;Merge what 1 ~ 5 dialysis obtained Permeate is first permeate containing lactalbumin, lactose, inorganic salts, small molecule cellulose, after the 5th dialysis Obtained trapped fluid is first trapped fluid containing fat, casein micelles.
3. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 2, it is characterised in that The first permeate of step 2 is 4 times by the number that ultrafiltration membrane carries out dialysis, and detailed process is as follows: first permeate passes through When ultrafiltration membrane carries out 3 times dialysis, the trapped fluid that each dialysis obtains is diluted with 1.5-5 times of deionized water, then is led to It crosses ultrafiltration membrane and carries out dialysis next time, wherein the first permeate is without dilution when the 1st dialysis;Merge 1 ~ 4 dialysis to obtain Permeate be second permeate containing lactose, inorganic salts, small molecule cellulose, obtained after the 4th dialysis Trapped fluid is second trapped fluid containing lactalbumin.
4. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 1, it is characterised in that Microfiltration membranes in step 1) are hollow-fibre membrane, ceramic membrane, plate membrane or rolled membrane module.
5. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 1, it is characterised in that Ultrafiltration membrane in step 2 is plate membrane, rolled film, hollow-fibre membrane or ceramic film component.
6. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 1, it is characterised in that Nanofiltration membrane in step 4) is plate membrane or rolled membrane module.
7. a kind of preparation method of de-lactosed milk powder based on separation membrane technology according to claim 1, it is characterised in that The lactose residual quantity of de-lactosed milk powder product obtained by step 5) is below 5%.
CN201910058861.8A 2019-01-22 2019-01-22 A kind of demulsification sugar-milk preparation method based on separation membrane technology Pending CN109744316A (en)

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CN111919908A (en) * 2020-07-07 2020-11-13 石家庄君乐宝乳业有限公司 Preparation method of desalted whey powder
CN112088941A (en) * 2019-06-17 2020-12-18 内蒙古蒙牛乳业(集团)股份有限公司 De-lactose dairy product and preparation method thereof
CN112088942A (en) * 2019-06-17 2020-12-18 内蒙古蒙牛乳业(集团)股份有限公司 Strained dairy product added with quinoa particles and preparation method thereof
CN112544714A (en) * 2020-12-08 2021-03-26 光明乳业股份有限公司 Method for preparing carbohydrate-free milk by using raw milk and carbohydrate-free milk
CN112931620A (en) * 2021-04-02 2021-06-11 元气森林(北京)食品科技集团有限公司 Device system and method for preparing dairy product
CN113519627A (en) * 2021-07-15 2021-10-22 青岛圣桐营养食品有限公司 Lactose-free milk powder with low browning
CN114343020A (en) * 2021-12-14 2022-04-15 南京工业大学 Process for removing lactose from milk
CN114539433A (en) * 2021-12-29 2022-05-27 北京三元食品股份有限公司 Preparation method of lacto-oligosaccharide, and oligosaccharide powder and food prepared by same
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CN112088941A (en) * 2019-06-17 2020-12-18 内蒙古蒙牛乳业(集团)股份有限公司 De-lactose dairy product and preparation method thereof
CN112088942A (en) * 2019-06-17 2020-12-18 内蒙古蒙牛乳业(集团)股份有限公司 Strained dairy product added with quinoa particles and preparation method thereof
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CN112544714A (en) * 2020-12-08 2021-03-26 光明乳业股份有限公司 Method for preparing carbohydrate-free milk by using raw milk and carbohydrate-free milk
CN112931620A (en) * 2021-04-02 2021-06-11 元气森林(北京)食品科技集团有限公司 Device system and method for preparing dairy product
CN113519627A (en) * 2021-07-15 2021-10-22 青岛圣桐营养食品有限公司 Lactose-free milk powder with low browning
WO2023057585A1 (en) 2021-10-06 2023-04-13 Arla Foods Amba A method of producing mineralised, lactose-reduced milk product and the milk product resulting from the method
CN114343020A (en) * 2021-12-14 2022-04-15 南京工业大学 Process for removing lactose from milk
CN114343020B (en) * 2021-12-14 2023-10-24 南京工业大学 Process for removing lactose from milk
CN114539433A (en) * 2021-12-29 2022-05-27 北京三元食品股份有限公司 Preparation method of lacto-oligosaccharide, and oligosaccharide powder and food prepared by same
WO2023124706A1 (en) * 2021-12-29 2023-07-06 北京三元食品股份有限公司 Method for preparing milk oligosaccharide, oligosaccharide powder prepared using same, and food
CN115191488A (en) * 2022-05-13 2022-10-18 湖南袁氏农牧科技发展有限公司 Formula milk powder for improving immunity of children and preparation method thereof
CN116406702A (en) * 2023-06-12 2023-07-11 内蒙古蒙牛乳业(集团)股份有限公司 Milk and preparation method thereof
CN116406702B (en) * 2023-06-12 2023-09-01 内蒙古蒙牛乳业(集团)股份有限公司 Milk and preparation method thereof
CN117481198A (en) * 2024-01-02 2024-02-02 内蒙古蒙牛乳业(集团)股份有限公司 Membrane separation recombination method for core nutritional ingredients of infant milk product and application of membrane separation recombination method

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