CN107771930A - A kind of preparation technology of milk - Google Patents

A kind of preparation technology of milk Download PDF

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Publication number
CN107771930A
CN107771930A CN201610734916.9A CN201610734916A CN107771930A CN 107771930 A CN107771930 A CN 107771930A CN 201610734916 A CN201610734916 A CN 201610734916A CN 107771930 A CN107771930 A CN 107771930A
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CN
China
Prior art keywords
milk
storage case
concentrated
air
seal storage
Prior art date
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Pending
Application number
CN201610734916.9A
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Chinese (zh)
Inventor
刘丽
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Individual
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Individual
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Priority to CN201610734916.9A priority Critical patent/CN107771930A/en
Publication of CN107771930A publication Critical patent/CN107771930A/en
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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
    • A23C1/00—Concentration, evaporation or drying
    • 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
    • A23C1/00—Concentration, evaporation or drying
    • A23C1/06—Concentration by freezing out the water
    • A23C1/08—Freeze-drying
    • 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
    • A23C3/00—Preservation of milk or milk preparations
    • 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
    • A23C3/00—Preservation of milk or milk preparations
    • A23C3/04—Preservation of milk or milk preparations by freezing or cooling
    • A23C3/045—Freezing in loose unpacked form

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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 kind of preparation technology of milk, concentrated including fresh milk, high-pressure pulse electric processing, pasteurize, five steps of water sublimed and bag distribution packaging, fresh milk is concentrated to finite concentration, after carrying out pasteurize, into vacuum refrigeration equipment, moisture content is distilled, remove the moisture content in liquid milk, moisture in milk powder is less than 5%, make the active nutrient component in fresh milk do not suffer a loss or lose it is minimum.Used vacuum refrigeration equipment can realize fast-refrigerating, and energy consumption is low, can to concentrated milk carry out fast-refrigerating after and steady temperature, it is ensured that the freshness of concentrated milk.Drying device can be detected voluntarily to the air humidity and temperature of the box house of the dairy product of storage, and the refrigeration that can be circulated to the air of box house and dehumidifying.

Description

A kind of preparation technology of milk
Technical field
The present invention relates to milk powder to process preparing technical field, specially a kind of preparation technology of milk.
Background technology
Milk powder is using fresh milk or goat milk as raw material, using the method for heating spray drying, removes almost all in breast Moisture after manufactured powder, it is convenient to preserve, and is easy to carry.Milk powder easily reconstitutes, nutritious.Instant milk powder is than common Milk powder particles are big and loose, and wettability is good, and decentralization is high.When reconstituting, i.e., it can also be dissolved rapidly using warm water.
Milk powder producing process is at present using preferably at most spray drying process, and some designs are to use vacuum evaporating pot, first by ox Milk is condensed into pie, then re-dry powder；Some designs are then the rollers that the milk after initial concentration is spread out in heating On, peel the thin milk film ironed powder processed etc. again.Spray drying process is that American Pa Xi invented in 1877.This method It is first to carry out milk the various PROCESS FOR TREATMENTs such as to sterilize, is then concentrated in vacuo to the 1/4 of original volume, turns into concentrated milk again with vaporific It is sprayed onto in the hothouse of hot-air, powder, then quick cooling sieving is made after dehydration, you can be packaged as finished product.This method Still it is used because energy consumption cost is as little as modern.Its birth promoted milk powder manufacturing industry early 20th century great development.Cross herein Cheng Zhong, because drying temperature is 135 DEG C, the effective active nutritional ingredient in fresh milk makes the work in fresh milk because high temperature damages Property nutritional ingredient is lost.
The content of the invention
Fresh milk is concentrated to finite concentration it is an object of the invention to provide one kind, after carrying out pasteurize, into vacuum Freezing equipment, moisture content is distilled, remove the moisture content in liquid milk, the moisture in milk powder is less than 5%, make the active nutritional in fresh milk Minimum processing technology is not suffered a loss or lost to composition, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of preparation technology of milk, including following step Suddenly：
Step（1）, fresh milk concentration, raw milk is poured into high pressure homogenizer, passed through in the environment of 30~45 DEG C, 30~40Mpa Quadruple effect concentration technology, concentrated milk is made, the solid concentration of concentrated milk is 40~50wt%；
Step（2）, high-pressure pulse electric processing：Concentration milk after high-pressure homogeneous is subjected to high-voltage pulse electric through PEF equipment Field processing, impulse waveform is square wave；
Step（3）, pasteurize, after concentrated milk is carried out into filter centrifugation purified treatment, carried out in the environment of being 72 DEG C in temperature Time is a 15s pasteurize, and it is the two of 15s to carry out the time after concentrated milk's homogeneous of gained in the case where temperature is 75 DEG C of environment Secondary pasteurize；
Step（4）, water sublimed, concentrated milk was cooled to 0~15 DEG C through 36 hours, is put into vacuum refrigeration equipment and carries out 8~10 The water sublimed of hour, the moisture content in concentrated milk is removed, taken out when moisture is less than 5%, it is small that 2~5 are placed in drying device When, form finished product milk powder；
Step（5）, bag distribution packaging, packing container is vacuumized after gained finished product milk powder is dispensed, makes the residual in packing container Amount of oxygen is less than vessel volume percentage 3%.
Preferably, step（2）Mesohigh impulse electric field treatment conditions are：25-35kV/cm, pulse width are 2-10 μ s, arteries and veins It is 100-2000Hz to rush frequency, and flow velocity 80-120L/h, number of processes is 2 times.
Preferably, step（4）In vacuum refrigeration equipment structure be including rectangular-shaped type pipe, casing and compressor, it is described Rectangular-shaped type pipe fits to form the first heat transfer zone with bottom half, and the side of the rectangular-shaped type pipe is through in aluminium foil and casing The second heat transfer zone is formed between wall, the outside of the aluminium foil is coated with heat-insulating material, and the rectangular-shaped type pipe is connected with compressor Form heat transfer circulation system.
Preferably, step（4）In drying device structure be to include seal storage case, air inlet, gas outlet, refrigeration machine Group, processing unit, wind-guiding fan, aerial temperature and humidity detector, control cabinet, airway tube are air-dried, the seal storage case is length Square hutch, air inlet is provided with one end of seal storage case, and the other end of seal storage case is provided with gas outlet, The side refrigeration unit of seal storage case is connected by airway tube with air inlet, and place is air-dried in the opposite side of seal storage case Reason device is connected by airway tube with gas outlet, and wind-guiding fan is provided with the airway tube between air inlet and refrigeration unit, Aerial temperature and humidity detector is installed in seal storage case, control cabinet, refrigeration unit, sky are installed in the front of seal storage case Gas drying process device, wind-guiding fan, aerial temperature and humidity detector are connected by wire with control cabinet, refrigeration unit and are air-dried Processing unit is connected by airway tube.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）Fresh milk is concentrated to finite concentration by the present invention, and after carrying out pasteurize, into vacuum refrigeration equipment, moisture content is distilled, The moisture content in liquid milk is removed, the moisture in milk powder is less than 5%, the active nutrient component in fresh milk is not suffered a loss or is lost most It is low.
（2）Vacuum refrigeration equipment in invention can realize fast-refrigerating, and energy consumption is low, concentrated milk can be carried out quick After refrigeration and steady temperature, it is ensured that the freshness of concentrated milk.
（3）Drying device in the present invention can be voluntarily to the air humidity and temperature of the box house of the dairy product of storage Degree is detected, and the refrigeration that can be circulated to the air of box house and dehumidifying.
Brief description of the drawings
Fig. 1 is present invention process flow chart；
Fig. 2 is vacuum refrigeration equipment structural representation；
Fig. 3 is drying device structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：A kind of preparation technology of milk, comprises the following steps：
Step（1）, fresh milk concentration, raw milk is poured into high pressure homogenizer, passed through in the environment of 30~45 DEG C, 30~40Mpa Quadruple effect concentration technology, concentrated milk is made, the solid concentration of concentrated milk is 40~50wt%；
Step（2）, high-pressure pulse electric processing：Concentration milk after high-pressure homogeneous is subjected to high-voltage pulse electric through PEF equipment Field processing, impulse waveform is square wave；
Step（3）, pasteurize, after concentrated milk is carried out into filter centrifugation purified treatment, carried out in the environment of being 72 DEG C in temperature Time is a 15s pasteurize, and it is the two of 15s to carry out the time after concentrated milk's homogeneous of gained in the case where temperature is 75 DEG C of environment Secondary pasteurize；
Step（4）, water sublimed, concentrated milk was cooled to 0~15 DEG C through 36 hours, is put into vacuum refrigeration equipment and carries out 8~10 The water sublimed of hour, the moisture content in concentrated milk is removed, taken out when moisture is less than 5%, it is small that 2~5 are placed in drying device When, form finished product milk powder；
Step（5）, bag distribution packaging, packing container is vacuumized after gained finished product milk powder is dispensed, makes the residual in packing container Amount of oxygen is less than vessel volume percentage 3%.
Fresh milk is concentrated to finite concentration, after carrying out pasteurize, into vacuum refrigeration equipment, moisture content distilled, is removed Moisture content in liquid milk, moisture in milk powder is less than 5%, make the active nutrient component in fresh milk do not suffer a loss or lose it is minimum.
And step（2）Mesohigh impulse electric field treatment conditions are：25-35kV/cm, pulse width are 2-10 μ s, pulse Frequency is 100-2000Hz, and flow velocity 80-120L/h, number of processes is 2 times.
As shown in Fig. 2 in step（4）In vacuum refrigeration equipment structure be, including rectangular-shaped type pipe 1, casing 2 and compression Machine 3, rectangular-shaped type pipe 1 fit to form the first heat transfer zone 4 with the bottom of casing 2, and the side of rectangular-shaped type pipe 1 is through aluminium foil 5 and case The second heat transfer zone 6 is formed between the inwall of body 2, the outside of aluminium foil 5 is coated with heat-insulating material, rectangular-shaped type pipe 1 and the phase of compressor 3 Company forms heat transfer circulation system.Fast-refrigerating can be realized, and energy consumption is low, can be to after concentrated milk's progress fast-refrigerating and constant Temperature, it is ensured that the freshness of concentrated milk
Step（4）In drying device structure be to include seal storage case 7, air inlet 8, gas outlet 9, refrigeration unit 10, air Drying process device 11, wind-guiding fan 12, aerial temperature and humidity detector 13, control cabinet 14, airway tube 15, as shown in figure 3, closed storage Tibetan case 7 is rectangle hutch, and one end of seal storage case 7 is provided with air inlet 8, set in the other end of seal storage case 7 Gas outlet 9 is equipped with, is connected in the side refrigeration unit 10 of seal storage case 7 by airway tube 15 with air inlet 8, in seal storage The opposite side of case 7 is air-dried processing unit 11 and is connected by airway tube 15 with gas outlet 9, in air inlet 8 and refrigeration unit 10 Between airway tube 15 in be provided with wind-guiding fan 12, aerial temperature and humidity detector 13 is installed in seal storage case 7, closed The front of hutch 7 is provided with control cabinet 14, refrigeration unit 10, is air-dried processing unit 11, wind-guiding fan 12, aerial temperature and humidity Detector 13 is connected by wire with control cabinet 14, refrigeration unit 10 and is air-dried processing unit 11 and is passed through the phase of airway tube 15 Even.Voluntarily the air humidity and temperature of the box house of the dairy product of storage can be detected, and can be to casing The refrigeration and dehumidifying that internal air is circulated.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (4)

  1. A kind of 1. preparation technology of milk, it is characterised in that：This method is carried out as steps described below：
    Step（1）, fresh milk concentration, raw milk is poured into high pressure homogenizer, passed through in the environment of 30~45 DEG C, 30~40Mpa Quadruple effect concentration technology, concentrated milk is made, the solid concentration of concentrated milk is 40~50wt%；
    Step（2）, high-pressure pulse electric processing, the concentration milk after high-pressure homogeneous is subjected to high-voltage pulse electric through PEF equipment Field processing, impulse waveform is square wave；
    Step（3）, pasteurize, after concentrated milk is carried out into filter centrifugation purified treatment, carried out in the environment of being 72 DEG C in temperature Time is a 15s pasteurize, and it is the two of 15s to carry out the time after concentrated milk's homogeneous of gained in the case where temperature is 75 DEG C of environment Secondary pasteurize；
    Step（4）, water sublimed, concentrated milk was cooled to 0~15 DEG C through 36 hours, is put into vacuum refrigeration equipment and carries out 8~10 The water sublimed of hour, the moisture content in concentrated milk is removed, taken out when moisture is less than 5%, it is small that 2~5 are placed in drying device When, form finished product milk powder；
    Step（5）, bag distribution packaging, packing container is vacuumized after gained finished product milk powder is dispensed, makes the residual in packing container Amount of oxygen is less than vessel volume percentage 3%.
  2. A kind of 2. preparation technology of milk according to claim 1, it is characterised in that：The step（2）Mesohigh pulse Electric field treatment condition is：25-35kV/cm, pulse width are 2-10 μ s, pulse frequency 100-2000Hz, flow velocity 80- 120L/h, number of processes are 2 times.
  3. A kind of 3. preparation technology of milk according to claim 1, it is characterised in that：The step（4）In vacuum it is cold It is including rectangular-shaped type pipe, casing and compressor to freeze device structure, and the rectangular-shaped type pipe fits to form the with bottom half One heat transfer zone, the side of the rectangular-shaped type pipe through forming the second heat transfer zone between aluminium foil and the inwall of casing, the aluminium foil Outside is coated with heat-insulating material, and the rectangular-shaped type pipe is connected to form heat transfer circulation system with compressor.
  4. A kind of 4. preparation technology of milk according to claim 1, it is characterised in that：The step（4）In dry dress Put structure be include seal storage case, air inlet, gas outlet, refrigeration unit, be air-dried processing unit, wind-guiding fan, Air Temperature Hygrosensor, control cabinet, airway tube, the seal storage case are rectangle hutch, are set in one end of seal storage case There is air inlet, the other end of seal storage case is provided with gas outlet, pass through air guide in the side refrigeration unit of seal storage case Pipe is connected with air inlet, and be air-dried processing unit in the opposite side of seal storage case is connected by airway tube with gas outlet, Wind-guiding fan is installed in the airway tube between air inlet and refrigeration unit, aerial temperature and humidity detection is installed in seal storage case Device, control cabinet is installed in the front of seal storage case, refrigeration unit, is air-dried processing unit, wind-guiding fan, aerial temperature and humidity Detector is connected by wire with control cabinet, and refrigeration unit is connected with processing unit is air-dried by airway tube.
CN201610734916.9A 2016-08-28 2016-08-28 A kind of preparation technology of milk Pending CN107771930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610734916.9A CN107771930A (en) 2016-08-28 2016-08-28 A kind of preparation technology of milk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610734916.9A CN107771930A (en) 2016-08-28 2016-08-28 A kind of preparation technology of milk

Publications (1)

Publication Number Publication Date
CN107771930A true CN107771930A (en) 2018-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610734916.9A Pending CN107771930A (en) 2016-08-28 2016-08-28 A kind of preparation technology of milk

Country Status (1)

Country Link
CN (1) CN107771930A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108651624A (en) * 2018-03-28 2018-10-16 太仓武广机电科技有限公司 It is dried in vacuo milk powder producing process
CN110897004A (en) * 2019-12-13 2020-03-24 上海海洋大学 Milk freezing concentration pasteurization method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108651624A (en) * 2018-03-28 2018-10-16 太仓武广机电科技有限公司 It is dried in vacuo milk powder producing process
CN110897004A (en) * 2019-12-13 2020-03-24 上海海洋大学 Milk freezing concentration pasteurization method

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Application publication date: 20180309