CN111802457A - Triple deodouring method for processing goat milk - Google Patents
Triple deodouring method for processing goat milk Download PDFInfo
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- 235000020251 goat milk Nutrition 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001954 sterilising effect Effects 0.000 claims abstract description 45
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 45
- 238000001704 evaporation Methods 0.000 claims abstract description 37
- 230000008020 evaporation Effects 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 102000004169 proteins and genes Human genes 0.000 claims description 7
- 108090000623 proteins and genes Proteins 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 241000283707 Capra Species 0.000 abstract 1
- 230000002496 gastric effect Effects 0.000 abstract 1
- 241001494479 Pecora Species 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 238000009928 pasteurization Methods 0.000 description 9
- 235000013336 milk Nutrition 0.000 description 7
- 239000008267 milk Substances 0.000 description 7
- 210000004080 milk Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 239000001131 (4R)-4-methylnonanoic acid Substances 0.000 description 1
- 239000001706 (4R)-4-methyloctanoic acid Substances 0.000 description 1
- FPIPGXGPPPQFEQ-UHFFFAOYSA-N 13-cis retinol Natural products OCC=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-UHFFFAOYSA-N 0.000 description 1
- WQTZCQIRCYSUBQ-UHFFFAOYSA-N 4-Methylnonanoic acid Chemical compound CCCCCC(C)CCC(O)=O WQTZCQIRCYSUBQ-UHFFFAOYSA-N 0.000 description 1
- LEGGANXCVQPIAI-UHFFFAOYSA-N 4-methyl-octanoic acid Chemical compound CCCCC(C)CCC(O)=O LEGGANXCVQPIAI-UHFFFAOYSA-N 0.000 description 1
- 208000035143 Bacterial infection Diseases 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- FPIPGXGPPPQFEQ-BOOMUCAASA-N Vitamin A Natural products OC/C=C(/C)\C=C\C=C(\C)/C=C/C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-BOOMUCAASA-N 0.000 description 1
- 229930003270 Vitamin B Natural products 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000013350 formula milk Nutrition 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 235000019155 vitamin A Nutrition 0.000 description 1
- 239000011719 vitamin A Substances 0.000 description 1
- 235000019156 vitamin B Nutrition 0.000 description 1
- 239000011720 vitamin B Substances 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 229940045997 vitamin a Drugs 0.000 description 1
Classifications
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Dairy Products (AREA)
Abstract
The invention discloses a triple de-odoring method for processing goat milk, relates to the technical field of goat milk processing, and solves the problems that in the prior art, sterilization is not thorough, the de-odoring effect is poor, and the requirements of low-age babies cannot be met. The process of the invention comprises: preheating raw goat milk to 50-60 ℃; then sending the preheated goat milk into a de-odoring tank for negative pressure de-odoring to finish primary de-odoring and sterilization treatment; homogenizing the goat milk after the first de-odoring, then carrying out low vacuum concentration to obtain concentrated goat milk, carrying out double de-odoring, carrying out high temperature sterilization on the concentrated goat milk after the double de-odoring, sending to a flash evaporation sterilization de-odoring tank for flash evaporation de-odoring and sterilization, and obtaining the goat milk without the goat odor. According to the invention, the goat milk is thoroughly deodorized and sterilized by a triple mutton smell removing process, so that the produced goat milk powder can meet the gastrointestinal requirements of the baby of low age, and meet the diversified pursuit of modern mothers.
Description
Technical Field
The invention belongs to the technical field of dairy product processing, and particularly relates to a triple de-odoring method for goat milk processing.
Background
In recent years, the goat milk powder is popular with Chinese people due to the characteristics of easy absorption, low sensitization and the like. In the production process of the goat milk powder, the mutton smell removing technology is the key influencing the taste and quality of the goat milk powder in the later period. Enterprises can be concerned with the territory of the goat milk powder, the mutton smell removing technology has no success, but few enterprises can have new breakthrough on the mutton smell removing technology, so that the quality and the nutritional value of the goat milk powder are greatly reduced.
The prior art with publication number CN 101077091a provides a method for removing the smell of goat milk, which adopts a treatment process of reducing pressure at two ends to remove the smell of goat milk: preheating raw goat milk to 97-99 ℃ for sterilization, then performing two-stage de-odoring under reduced pressure, condensing vacuum de-odored gas to separate milk-flavored fat, and statically mixing the milk-flavored fat and the de-odored goat milk under high pressure to prepare the goat milk without the odor smell, namely completing the goat milk de-odoring treatment operation. The operation method solves the problem that dairy processing enterprises can not solve for many years, can remove the mutton smell in the goat milk, can keep the original quality and nutrition of the goat milk, successfully realizes the industrial production of the goat milk, and fills the market blank.
However, in practical operation, the method for removing the smell of goat milk has the following defects:
1. in the process of mixing the milk-flavored fat and the de-odorized goat milk, the high-pressure static mixing equipment and the equipment involved in the transfer process are repeatedly sterilized and isolated from air, the production environment is extremely harsh, the number of times of sterilization treatment is reduced, even certain air is mixed into the sterilization treatment, the number of bacteria in a finished product can be greatly increased, and the production cost is greatly increased in order to obtain the de-odorized goat milk with excellent quality;
2. the de-odoring milk prepared by the method has the advantages that the de-odoring effect is reduced and the removed odorous smell is recycled into the de-odoring milk because the milk-flavored fat of the odorous gas is mixed into the de-odoring milk; on the other hand, it is not suitable for the mother's choice, who does not want the child to ingest too much fat;
3. the whole process treatment is weak in sterilization, and the produced milk powder is not suitable for the intestines and stomach of young babies, so that the produced goat milk powder is not suitable for the young babies to eat.
Disclosure of Invention
The invention aims to provide a triple de-odoring method for processing goat milk, and solves the problems that in the prior art, sterilization is not thorough, the de-odoring effect is poor, and the requirements of low-age babies cannot be met.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a triple de-odoring method for processing goat milk comprises the following steps:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: feeding preheated raw goat milk into a sterilizer for heating and sterilization treatment, conveying the sterilized raw goat milk to a vacuum de-odoring tank with the vacuum degree of 50-70 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the goat milk to a separator, setting the temperature of the separator to be 50-55 ℃, performing degerming de-odoring separation, returning the goat milk to the sterilizer at the temperature of 120-140 ℃ for 4-10 seconds, and completing primary de-odoring;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to the first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 50-70 KPa, and discharging the extracted goat milk odor through a de-odoring condensing tank to finish the second de-odoring;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated goat milk to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated goat milk for at least 60 seconds at the temperature of 65-85 ℃ through a protein holding tube, conveying the double de-odorized concentrated goat milk to a flash evaporation sterilization de-odorizing tank, carrying out flash evaporation for 2-4 seconds at the temperature of 140-145 ℃, wherein the vacuum degree is 60-80 KPa, and condensing and discharging the de-odorized goat milk through a pipeline to finish de-odorizing.
Preferably, in the step (2), the preheated raw goat milk is sent to a pasteurizing machine and heated to 60-65 ℃ for sterilization treatment.
Preferably, in the step (2), the vacuum degree of the vacuum de-odoring tank is 55-60 KPa.
Preferably, in the step (3), the evaporation temperature of the vacuum concentration evaporator is 75-78 ℃, the amount of evaporated water is 25-30 tons/hour, and the vacuum degree is 55-60 KPa.
Preferably, in the step (3), the mass percentage of the concentrated goat milk solid after double de-odoring is 45-55%.
Preferably, in the step (4), the flash evaporation temperature of the flash evaporation sterilization de-odoring tank is 142 +/-1 ℃, and the vacuum degree is 55-60 KPa.
Compared with the prior art, the invention has the following beneficial effects:
(1) the sterilization process comprises multiple times of pasteurization treatment and 145 ℃ flash evaporation sterilization treatment of a flash evaporation sterilization de-odoring tank, the treatment temperature is from low to high, bacteria with different temperature adaptability are killed in batches, the sterilization is thorough, the number of bacteria in the produced goat milk powder is greatly reduced, and the eating requirements of the young babies are met. Therefore, the goat milk powder treated by the de-odoring treatment method provided by the invention can be used for producing edible milk powder for the babies with the low ages of the months.
(2) The invention comprises triple de-odoring, and comprises the de-odoring treatment of a flash evaporation sterilization de-odoring tank in addition to negative pressure de-odoring, so that not only is thorough sterilization realized, but also stubborn de-odoring is thoroughly eliminated, the peculiar smell of goat milk is greatly reduced, and the baby prefers to drink.
(3) According to the de-odoring treatment process provided by the invention, due to the high-temperature sterilization de-odoring treatment of the final flash evaporation sterilization de-odoring tank, the number of bacteria in de-odoring goat milk powder is not increased due to the transfer of materials in the production process and the bacterial infection condition of equipment, the requirements on the equipment and the production environment are relaxed, and the production cost of the whole process is greatly reduced.
Detailed Description
The present invention is further illustrated by the following examples, which include, but are not limited to, the following examples.
The invention provides a goat milk de-odoring treatment method, which is suitable for a milk source pretreatment process of formula milk powder to obtain a sterile and non-odorous front-end milk source.
Example 1
The raw goat milk is subjected to the following de-odoring treatment:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: sending preheated raw goat milk into a pasteurization machine, heating to 60-65 ℃ for sterilization treatment, conveying the sterilized raw goat milk into a vacuum de-odoring tank with the vacuum degree of 55-60 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the goat milk into a separator, setting the temperature of the separator at 50-55 ℃, performing sterilization de-odoring separation, returning the separator to the pasteurization machine at 125-130 ℃ for 4-10 seconds, and completing the primary de-odoring;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 55-60 KPa, discharging the concentrated goat milk subjected to de-odoring through a de-odoring condensing tank to finish double de-odoring, wherein the mass percentage of the solid matters of the concentrated goat milk subjected to double de-odoring is 45%;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated sheep to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated sheep for 60 seconds at the temperature of 70-75 ℃ through a protein holding tube, conveying the double de-odorized concentrated sheep to a flash evaporation sterilization de-odorization tank, performing flash evaporation for 4 seconds at the temperature of 142 +/-1 ℃, wherein the vacuum degree is 55-60 KPa, and condensing and discharging the de-odorized goat milk without the mutton smell of the goat milk through a pipeline to finish de-odorization.
Example 2
The same batch of raw goat milk as in example 1 was subjected to the following deodouring treatment:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: sending preheated raw goat milk into a pasteurization machine, heating to 60-65 ℃ for sterilization treatment, conveying the sterilized raw goat milk into a vacuum de-odoring tank with the vacuum degree of 60-70 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the goat milk into a separator, setting the temperature of the separator at 50-55 ℃, performing sterilization de-odoring separation, returning the separator to the pasteurization machine at 125-130 ℃ for 4-10 seconds, and completing the primary de-odoring;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 60-70 KPa, discharging the concentrated goat milk subjected to de-odoring through a de-odoring condensing tank to finish double de-odoring, wherein the mass percentage of the solid matters of the concentrated goat milk subjected to double de-odoring is 48%;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated sheep to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated sheep for 60 seconds at the temperature of 70-75 ℃ through a protein holding tube, conveying the double de-odorized concentrated sheep to a flash evaporation sterilization de-odorization tank, performing flash evaporation for 4 seconds at the temperature of 142 +/-1 ℃, wherein the vacuum degree is 60-70 KPa, and condensing and discharging the de-odorized goat milk without the mutton smell of the goat milk through a pipeline to finish de-odorization.
Example 3
The same batch of raw goat milk as in example 1 was subjected to the following deodouring treatment:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: sending preheated raw goat milk into a pasteurization machine, heating to 60-65 ℃ for sterilization treatment, conveying the sterilized raw goat milk into a vacuum de-odoring tank with the vacuum degree of 55-60 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the goat milk into a separator, setting the temperature of the separator at 50-55 ℃, performing sterilization de-odoring separation, returning the separator to the pasteurization machine at 130-140 ℃ for 4-10 seconds, and completing the primary de-odoring;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 55-60 KPa, discharging the concentrated goat milk subjected to de-odoring through a de-odoring condensing tank to finish double de-odoring, wherein the mass percentage of the solid matters of the concentrated goat milk subjected to double de-odoring is 50%;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated sheep to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated sheep for 60 seconds at the temperature of 80-85 ℃ through a protein holding tube, conveying the double de-odorized concentrated sheep to a flash evaporation sterilization de-odorization tank, performing flash evaporation for 4 seconds at the temperature of 142 +/-1 ℃, wherein the vacuum degree is 55-60 KPa, and condensing and discharging the de-odorized goat milk without the mutton smell of the goat milk through a pipeline to finish de-odorization.
Example 4
The same batch of raw goat milk as in example 1 was subjected to the following deodouring treatment:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: sending preheated raw goat milk into a pasteurization machine, heating to 60-65 ℃ for sterilization treatment, conveying the sterilized raw goat milk into a vacuum de-odoring tank with the vacuum degree of 60-70 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the goat milk into a separator, setting the temperature of the separator at 50-55 ℃, performing sterilization de-odoring separation, returning the separator to the pasteurization machine at 130-140 ℃ for 4-10 seconds, and completing the primary de-odoring;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 60-70 KPa, discharging the concentrated goat milk subjected to de-odoring through a de-odoring condensing tank to finish double de-odoring, wherein the mass percentage of the solid matters of the concentrated goat milk subjected to double de-odoring is 55%;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated sheep to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated sheep for 60 seconds at the temperature of 80-85 ℃ through a protein holding tube, conveying the double de-odorized concentrated sheep to a flash evaporation sterilization de-odorization tank, performing flash evaporation for 2 seconds at the temperature of 145 +/-1 ℃, wherein the vacuum degree is 60-70 KPa, and condensing and discharging the de-odorized goat milk without the mutton smell of the goat milk through a pipeline to finish de-odorization.
Comparison example (prior art)
The same batch of raw goat milk as in example 1 was subjected to the following deodouring treatment:
(1) preheating: firstly, preheating raw goat milk to 43 ℃ from the temperature of 4-15 ℃ by using vacuum mutton smell gas obtained by a primary de-odoring tower and the top of a secondary de-odoring tower, then preheating to 97-99 ℃ by using the heat of the de-odoring goat milk obtained by the secondary de-odoring tower, and keeping the temperature at the temperature for 20 seconds;
(2) removing the smell of mutton for one time: feeding preheated raw goat milk into a primary de-odoring tower for pressure reduction de-odoring, wherein the surface display pressure of the primary de-odoring tower is-0.05 MPa, the tower kettle temperature is 83 ℃, the tower top temperature is 96 ℃, and vacuum de-odoring gas is obtained at the tower top;
(3) and (3) secondary smell removal: conveying goat milk in a tower kettle of the primary de-odoring tower to a secondary de-odoring tower, wherein the surface display pressure of the secondary de-odoring tower is-0.06 MPa, the temperature of the tower kettle is 73 ℃, the temperature of the tower top is 81 ℃, and vacuum de-odoring gas is obtained at the tower top;
(4) separating milk-flavor fat: condensing vacuum mutton smell gases obtained by the primary de-odoring tower and the secondary de-odoring tower to 58 ℃ under the pressure of-0.05 MPa, separating the vacuum mutton smell gases into milk-flavored fat and vacuum mutton smell gases, discharging the vacuum mutton smell gases from a vacuum pump, and conveying the milk-flavored fat to a high-pressure static mixer;
(5) static mixing of milk-flavored fat and de-odorized goat milk under high pressure: and cooling the goat milk obtained in the secondary de-odorizing tower kettle to 8-10 ℃ by using ice water, then sending the cooled goat milk into a high-pressure static mixer, and uniformly mixing the milk-flavored fat and the goat milk at 20MPa and 54 ℃ to obtain the goat milk without the mutton smell.
Detecting the result of comparison
The components of the goat milk with the smell removed produced in the 5 cases are detected, and the detection results are shown in the following table:
| component (A) | Example 1 | Example 1 | Example 3 | Example 4 | Comparative example |
| Acidity (° T) | 11.69 | 11.66 | 11.68 | 11.65 | 11.54 |
| Dry matter (%) | 25.3 | 25.7 | 26.8 | 27.5 | 13.2 |
| Fat (%) | 4.85 | 4.54 | 4.58 | 4.52 | 4.87 |
| Total number of colonies (MPN/100g) | 21 | 23 | 15 | 12 | 65 |
| Fatty acid (%) | 0.07 | 0.05 | 0.06 | 0.05 | 0.21 |
| Protein (%) | 3.66 | 3.67 | 3.65 | 3.68 | 2.55 |
| Calcium (mg/100g) | 403.5 | 403.9 | 404.2 | 402.9 | 213.2 |
| Iron (mg/100g) | 185.3 | 187.4 | 185.7 | 184.5 | 105.9 |
| Phosphorus (mg/100g) | 191.8 | 190.8 | 193.2 | 189.2 | 102.1 |
| Vitamin A (ug/100g) | 78 | 82 | 81 | 84 | 35 |
| Vitamin B (ug/100g) | 457 | 452 | 453 | 459 | 262 |
| Vitamin C (ug/100g) | 85.1 | 85.9 | 85.1 | 87.1 | 38.2 |
| Lactose (%) | 8.79 | 8.78 | 8.79 | 8.77 | 4.39 |
| Thermal energy (J/100)mg) | 1513 | 1502 | 1507 | 1500 | 1205 |
As is known, fatty acids such as 4-methyloctanoic acid, 4-methylnonanoic acid and partial low-carbon chain free fatty acid are main sources of the mutton smell and the goat milk smell, and the table shows that the total amount of the fatty acids in the examples 1 to 4 is far lower than that in the comparative example, so that the mutton smell is removed more thoroughly by the mutton smell removing method provided by the invention.
Compared with the prior art, the invention has obvious technical progress, well overcomes the related technical difficulties, improves the technical means of removing the smell of the goat milk to a new height, realizes innovation, conforms to the trend of technological development, and meets the actual requirements of people on goat milk eating at present.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, and all the technical problems solved by the present invention should be consistent with the present invention, if they are not substantially modified or retouched in the spirit and concept of the present invention.
Claims (6)
1. A triple de-odoring method for processing goat milk is characterized by comprising the following steps:
(1) preheating: preheating raw goat milk to 50-60 ℃;
(2) firstly, de-odoring the mutton at once: feeding preheated raw goat milk into a sterilizer for heating and sterilization treatment, conveying the sterilized raw goat milk to a vacuum de-odorizing tank with the vacuum degree of 50-70 KPa, removing the goat milk odor, condensing and discharging the goat milk through a pipeline, conveying the de-odorized goat milk to a separator, setting the temperature of the separator to be 50-55 ℃, performing sterilization de-odorizing separation, returning the de-odorized goat milk to the sterilizer for 4-10 seconds at 120-140 ℃, and completing primary de-odorizing;
(3) removing the smell of mutton in a double-layer mode: conveying the goat milk subjected to the first de-odoring to a batching system, homogenizing by 10-20 Mpa, conveying to a vacuum concentration evaporator, evaporating at 70-80 ℃, wherein the evaporation water amount is 18-40 tons/hour, the vacuum degree is 50-70 KPa, and discharging the extracted goat milk odor through a de-odoring condensing tank to finish the second de-odoring;
(4) triple de-odoring: and (2) conveying the double de-odorized concentrated goat milk to an ultrahigh-temperature instantaneous sterilization machine, keeping the double de-odorized concentrated goat milk for at least 60 seconds at the temperature of 65-85 ℃ through a protein holding tube, conveying the double de-odorized concentrated goat milk to a flash evaporation sterilization de-odorizing tank, carrying out flash evaporation for 2-4 seconds at the temperature of 140-145 ℃, wherein the vacuum degree is 60-80 KPa, and condensing and discharging the de-odorized goat milk through a pipeline to finish de-odorizing.
2. The triple de-odoring method for processing goat milk according to claim 1, wherein in the step (2), the preheated raw goat milk is sent to a pasteurizer and heated to 60-65 ℃ for sterilization treatment.
3. The triple de-odoring method for processing goat milk according to claim 1, wherein in the step (2), the vacuum degree of a vacuum de-odoring tank is 55-60 KPa.
4. The triple de-odoring method for processing goat milk according to claim 1, wherein in the step (3), the evaporation temperature of a vacuum concentration evaporator is 75-78 ℃, the evaporation water amount is 25-30 tons per hour, and the vacuum degree is 55-60 KPa.
5. The triple de-odoring method for processing goat milk according to claim 1, wherein in the step (3), the mass percentage of the solid concentrated goat milk after double de-odoring is 45-55%.
6. The triple de-odoring method for processing goat milk according to claim 1, wherein in the step (4), the flash evaporation temperature of a flash evaporation sterilization de-odoring tank is 142 +/-1 ℃, and the vacuum degree is 55-60 KPa.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112438312A (en) * | 2020-11-18 | 2021-03-05 | 榆林学院 | Goat milk smell removing method |
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| CN101107943A (en) * | 2007-08-20 | 2008-01-23 | 澳芝妙乳业（北京）有限公司 | Physics the goat milk smell doffing method |
| CN102326624A (en) * | 2011-05-31 | 2012-01-25 | 大连九羊食品有限公司 | Method for deodorizing goat milk at low temperature |
| CN107318978A (en) * | 2017-08-28 | 2017-11-07 | 纽鸿（大连）乳品科技股份有限公司 | Goat milk flavor removing method |
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| CN101107943A (en) * | 2007-08-20 | 2008-01-23 | 澳芝妙乳业（北京）有限公司 | Physics the goat milk smell doffing method |
| CN102326624A (en) * | 2011-05-31 | 2012-01-25 | 大连九羊食品有限公司 | Method for deodorizing goat milk at low temperature |
| CN107318978A (en) * | 2017-08-28 | 2017-11-07 | 纽鸿（大连）乳品科技股份有限公司 | Goat milk flavor removing method |
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| CN112438312A (en) * | 2020-11-18 | 2021-03-05 | 榆林学院 | Goat milk smell removing method |
| CN112438312B (en) * | 2020-11-18 | 2023-10-31 | 陕西榆大科技发展有限公司 | Goat milk smell removing method |
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Application publication date: 20201023 |