CN113057227A - Method for preparing desalted whey powder for sheep - Google Patents
Method for preparing desalted whey powder for sheep Download PDFInfo
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- CN113057227A CN113057227A CN202110443276.7A CN202110443276A CN113057227A CN 113057227 A CN113057227 A CN 113057227A CN 202110443276 A CN202110443276 A CN 202110443276A CN 113057227 A CN113057227 A CN 113057227A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C21/00—Whey; Whey preparations
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C7/00—Other dairy technology
- A23C7/04—Removing unwanted substances other than lactose or milk proteins from milk
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Abstract
A method for preparing desalted whey powder for sheep relates to the field of food. The invention aims to solve the problems of poor desalting effect of the whey powder, particularly poor treatment effect of ash in the goat whey powder, and the invention prepares the goat whey powder, stirs, shears and homogenizes the goat whey powder, uses LX108 type cation exchange resin for desalting, uses LR08-08 type electrodialysis membrane for desalting, and finally uses LX-6702 type anion exchange resin for desalting, evaporation concentration and spray drying. After the treatment of the ion exchange coupling electrodialysis process, the mass fraction of ash is reduced from 7.44% to 0.98%, the salt rejection rate is 86.83%, the level of desalted goat whey powder D90 is achieved, the total solid content is reduced from 19.56% to 16.46%, and the loss rate is 15.85% and is at an acceptable level. The invention is applied to the field of milk powder.
Description
Technical Field
The invention relates to the field of food, and in particular relates to a method for preparing desalted whey powder for sheep.
Background
The whey powder is an important raw material in the production of the infant formula milk powder, and the infant formula milk powder can be closer to breast milk by adding the whey powder to adjust the protein proportion. In recent years, the infant formula goat milk powder is increasingly favored by consumers due to the characteristics of easy absorption, low sensitization, closer nutritional ingredients to breast milk and the like, and similarly, the goat whey powder is also a main raw material for producing the infant formula goat milk powder. However, for infants, the mineral content of the goat whey powder is high, and the kidney burden of the infants is increased. Therefore, the desalted sheep whey powder must be prepared by desalting excess minerals through a desalting process. At present, the literature reports that the desalting process applied to whey powder mainly comprises the following steps: ion exchange, electrodialysis, nanofiltration, etc. All the desalting methods reported in the literature are bovine whey powder. At present, no research report for desalting by taking sheep whey powder as a raw material is clear. Moreover, the ash content in the goat milk is higher than that of cow milk in literature reports and actual production, and the desalting of the goat whey powder is possibly more difficult. Most of the desalted goat whey powder used by domestic enterprises depends on import, and a few of the desalted goat whey powder adopts imported equipment and technology to perform self-desalting. Import equipment is expensive, and the performance of the import equipment is not well exerted due to the foreign technology blockage. The localization of the desalted sheep whey process is a difficult problem in the dairy industry.
Disclosure of Invention
The invention aims to solve the problems of poor desalting effect of goat whey powder, particularly poor treatment effect of ash in the goat whey powder, and provides a method for preparing the goat desalted whey powder.
The invention relates to a method for preparing desalted whey powder for sheep, which comprises the following steps:
after the salt-containing sheep whey powder is subjected to batching, stirring, shearing and homogenizing, adopting LX108 type cation exchange resin for desalting treatment under the conditions of 4000-10000 g of feeding amount and 15-22.5% of feeding progress; desalting by using an LR08-08 type electrodialysis membrane under the conditions of 6000-15000 g of feeding amount, 15-20% of feeding progress, 20V of initial voltage and 20-35 ℃ of treatment temperature; and finally, carrying out desalination treatment by using LX-6702 type anion exchange resin under the conditions of 4000-10000 g of feeding amount and 15-22.5% of feeding progress, evaporating for concentration, and carrying out spray drying to finish the method for preparing the desalted whey powder for sheep.
Further, the conditions for the desalting treatment by the LX108 type cation exchange resin were: the feed rate was 6000g, and the feed rate was 20%.
Further, the conditions for desalting by the LR08-08 type electrodialysis membrane were: the feed rate was 9000g, the feed rate was 20%, the initial voltage was 20V, and the treatment temperature was 30 ℃.
Further, conditions for desalting treatment by the LX-6702 type anion exchange resin are as follows: the feed rate was 4000g and the feed rate was 20%.
Further, the LX108 type cation exchange resin is 500mL LX108 type cation exchange resin.
Further, the LX-6702 type anion exchange resin is 500mL LX-6702 type anion exchange resin.
The invention has the following beneficial effects:
the mass fraction of ash in the goat whey powder treated by the ion exchange coupling electrodialysis process is reduced from 7.44% to 0.98%, the desalination rate is 86.83%, the level of the desalted goat whey powder D90 is achieved, the total solid content is reduced from 19.56% to 16.46%, and the loss rate is 15.85% and is at an acceptable level.
The ash content of the goat whey powder is higher than that of cow whey powder, the ion exchange coupling electrodialysis desalination process for the goat whey powder is stable and feasible, the method can be applied to actual industrial production, the domestication of the desalted goat whey powder can be completely realized, and the blank in the aspects of domestic goat whey powder desalination technology and process is filled. The invention adopts the ion exchange coupling electrodialysis process to desalt the goat whey powder, can be applied to practical production, and can realize localization of the desalted goat whey powder after mass production.
Detailed Description
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
To make the objects, aspects and advantages of the embodiments of the present invention more apparent, the following detailed description clearly illustrates the spirit of the disclosure, and any person skilled in the art, after understanding the embodiments of the disclosure, may make changes and modifications to the technology taught by the disclosure without departing from the spirit and scope of the disclosure.
The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention.
Example 1
1. Material
1.1 starting materials and reagents
Sheep whey powder (conductivity 12.65mS/cm, main components and ion content shown in Table 1), import non-desalted type, purified water (self-made), sodium hydroxide (for food industry), hydrochloric acid (analytically pure), nitric acid (analytically pure), citric acid (analytically pure).
TABLE 1 whey powder main ingredient and ion content
1.2 instruments and devices
OS40-S type mixing stirrer (Shanghai Hongzhi instruments and equipments Co., Ltd.), JRJ200-SH type digital display shearing emulsifying stirrer (Shanghai analysis practice Co., Ltd.), HH-6 type electric heating constant temperature water bath pot (Beijing Haitian you good science and technology Co., Ltd.), AH2020 type homogenizer (Shanghai Langgu Yu intelligentized science and technology Co., Ltd.), self-made ion exchange resin column, self-made electrodialysis small test equipment, Y-JN-80L type single-effect evaporation tank (Shanghai Yu inkstone machinery Co., Ltd.), BNK-8KG type spray dryer (Changzhou City drying equipment factory Co., Ltd.), DDSJ-308A type conductivity meter (Shanghai apparatus electronic science Co., Ltd.), and PHS-3C type pH meter (Zhenzhou Baojing electronics Co., Ltd.).
2. Method of producing a composite material
2.1 selection of ion exchange resin and electrodialysis Membrane
Cation exchange resin: 001 × 7 type, 001 × 12 type, LX-106 type, LX108 type. Water washing, salt leaching, alkali leaching, acid leaching and other pre-treatments for later use. The raw materials are mixed, stirred, sheared and homogenized, and desalted by using 500mL of cation exchange resin according to the feeding rate of 5000g and 15 percent of feeding progress. The desalting rate, protein loss rate and total solid loss rate of various types of cation exchange resins are compared, and the removal rates of calcium, magnesium, sodium, potassium, phosphorus, chlorine, nitrate and nitrite are compared.
Electrodialysis membrane type: LR01-01, LR03-06, and LR 08-08. After the raw materials are treated by cation exchange resin, an electrodialysis membrane is applied to treat the raw materials according to the feeding speed of 3000g of the raw materials of 15 percent, the treatment temperature is 25 ℃, and the initial voltage is 20V. Comparing the total solid yield, total protein yield, total lactose yield and total salt rejection rate of different types of electrodialysis membranes.
Anion exchange resin: type 201 x 7, type 201 x10, type D401, type LX-670, type LX-6702, type LX-94S, type LX-2010S. Water washing, salt leaching, acid leaching, alkali leaching and the like for later use. After the raw material was treated with cation exchange resin and electrodialysis, desalting treatment was performed using 500mL of anion exchange resin at a feed rate of 15% of the feed rate of 5000 g. Comparing the loss rate of vitamin B2, salt rejection rate, protein loss rate, total solid loss rate, and the removal rate of calcium, magnesium, sodium, potassium, phosphorus, chlorine, nitrate and nitrite.
After the above operation, finally, LX108 type was selected as the cation exchange resin of this example, LR08-08 type was selected as the electrodialysis membrane of this example, and LX-6702 type was selected as the anion exchange resin of this example.
2.2 optimization of Process conditions
The process route of the embodiment: whey powder → ingredient stirring shearing homogenization → ion exchange deionization → electrodialysis desalination → ion exchange deionization → evaporation concentration → spray drying.
After the sheep whey powder is blended, stirred, sheared and homogenized, the feed with the feed amount of 4000, 6000, 8000 and 10000g and 15 percent is respectively applied to 500mL LX108 type cation exchange resin for desalination; a500 mL LX108 type cation exchange resin was used for desalting at a feed rate of 15%, 17.5%, 20%, 22.5% of 8000 g. And comparing the desalting rate, the total solid loss rate and the time efficiency after treatment to determine the better feeding amount and feeding schedule.
After the raw material is treated by the cation exchange resin, the raw material is treated by an LR08-08 type electrodialysis membrane with the feeding rate of 12000g and the feeding rate of 20 percent, the initial voltage is 20V, and the treatment temperature is 20, 25, 30 and 35 ℃. Treatment with LR08-08 type electrodialysis membranes at 6000, 9000, 12000g and 15000g feed rates 15% feed schedule; treatment was carried out with a feed rate of 12000g at 15%, 17.5%, 20%, 22.5% feed rate using an LR08-08 electrodialysis membrane. And comparing the desalting rate, the total solid loss rate and the time efficiency after treatment, and determining the better treatment temperature, feeding amount and feeding schedule.
After the raw materials are treated by cation exchange resin and electrodialysis, 500mL of LX-6702 type anion exchange resin is applied for desalination according to the feeding rate of 4000, 6000, 8000 and 10000g of 15 percent. Desalting was carried out using 500mL of LX6702 type anion exchange resin at a feed rate of 15%, 17.5%, 20%, 22.5% in 5000 g. And comparing the desalting rate, the total solid loss rate and the time efficiency after treatment to determine the better feeding amount and feeding schedule.
2.3 measurement method
The ash content, protein, moisture, calcium, magnesium, sodium, potassium, phosphorus, chlorine, nitrate, nitrite and vitamin B2 are all measured by using the current national standard for effective food safety.
The salt rejection rate is (mass fraction of ash before treatment-mass fraction of ash after treatment)/mass fraction of ash before treatment × 100%, and the loss rate/rejection rate is (initial mass fraction-mass fraction after treatment)/initial mass fraction × 100%.
2.4 optimized technical solution
The technical scheme optimized by comparison screening is as follows: the sheep whey powder is subjected to batching, stirring, shearing and homogenizing, desalting treatment is carried out by using LX108 type cation exchange resin at 6000g of feeding rate of 20 percent, desalting treatment is carried out by using an LR08-08 type electrodialysis membrane at 9000g of feeding rate of 20 percent and initial voltage of 20V at the treatment temperature of 30 ℃, desalting treatment is carried out by using LX-6702 type anion exchange resin at 4000g of feeding rate of 20 percent, and then evaporating, concentrating and spray drying are carried out. Comparing the mass fraction of ash and the total solid content (see table 1 and table 2) after the raw material and 20% feeding schedule anion exchange resin treatment, it can be seen that the mass fraction of ash after the treatment of the ion exchange coupling electrodialysis process is reduced from 7.44% to 0.98%, the desalination rate is 86.83%, the desalted goat whey powder D90 level is reached, the total solid content is reduced from 19.56% to 16.46%, and the loss rate is 15.85% and is at an acceptable level.
TABLE 2 main indices of anion exchange resin after treatment of four feed schedules
Claims (6)
1. A method for preparing desalted whey powder for sheep is characterized by comprising the following steps:
after the salt-containing sheep whey powder is subjected to batching, stirring, shearing and homogenizing, adopting LX108 type cation exchange resin for desalting treatment under the conditions of 4000-10000 g of feeding amount and 15-22.5% of feeding progress; desalting by using an LR08-08 type electrodialysis membrane under the conditions of 6000-15000 g of feeding amount, 15-20% of feeding progress, 20V of initial voltage and 20-35 ℃ of treatment temperature; and finally, carrying out desalination treatment by using LX-6702 type anion exchange resin under the conditions of 4000-10000 g of feeding amount and 15-22.5% of feeding progress, evaporating for concentration, and carrying out spray drying to finish the method for preparing the desalted whey powder for sheep.
2. The method for preparing desalted whey powder for sheep as claimed in claim 1, wherein the desalting conditions of LX108 type cation exchange resin are as follows: the feed rate was 6000g, and the feed rate was 20%.
3. The method for preparing the desalted whey powder for sheep as claimed in claim 1, wherein the desalting condition of the LR08-08 type electrodialysis membrane is as follows: the feed rate was 9000g, the feed rate was 20%, the initial voltage was 20V, and the treatment temperature was 30 ℃.
4. The method for preparing desalted whey powder for sheep as claimed in claim 1, wherein the conditions for desalting treatment with LX-6702 type anion exchange resin are as follows: the feed rate was 4000g and the feed rate was 20%.
5. The method of claim 1, wherein the LX108 type cation exchange resin is 500mL LX108 type cation exchange resin.
6. The method for preparing desalted whey powder for sheep as claimed in claim 1, wherein said LX-6702 type anion exchange resin is 500mL LX-6702 type anion exchange resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110443276.7A CN113057227A (en) | 2021-04-23 | 2021-04-23 | Method for preparing desalted whey powder for sheep |
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| CN202110443276.7A CN113057227A (en) | 2021-04-23 | 2021-04-23 | Method for preparing desalted whey powder for sheep |
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| CN113057227A true CN113057227A (en) | 2021-07-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011037154A1 (en) * | 2009-09-25 | 2011-03-31 | 森永乳業株式会社 | Method for manufacturing desalted whey |
| CN106387090A (en) * | 2016-08-31 | 2017-02-15 | 北安宜品努卡乳业有限公司 | Pure sheep high fat desalted whey powder and preparation method thereof |
-
2021
- 2021-04-23 CN CN202110443276.7A patent/CN113057227A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011037154A1 (en) * | 2009-09-25 | 2011-03-31 | 森永乳業株式会社 | Method for manufacturing desalted whey |
| CN106387090A (en) * | 2016-08-31 | 2017-02-15 | 北安宜品努卡乳业有限公司 | Pure sheep high fat desalted whey powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘秀清等: "离子交换耦合电渗析制备脱盐羊乳清粉工艺研究", 《中国乳品工业》 * |
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Application publication date: 20210702 |