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 PDFInfo
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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
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%.
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