CN103891881A - Preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk - Google Patents
Preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk Download PDFInfo
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- CN103891881A CN103891881A CN201210589142.7A CN201210589142A CN103891881A CN 103891881 A CN103891881 A CN 103891881A CN 201210589142 A CN201210589142 A CN 201210589142A CN 103891881 A CN103891881 A CN 103891881A
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- packing container
- powdered milk
- preservation method
- milk powder
- fungus
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- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Dairy Products (AREA)
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Abstract
The invention provides a preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk. The preservation method is characterized in that the preservation method comprises the following steps: putting the powdered milk into a packing container, aerating gaseous mixture which contains no oxygen to the packing container, sealing the packing container; storing the above packing container at a condition of 20-25 DEG C. The preservation method by low temperature of MAP powdered milk provided by the invention has the positive effects that growth and reproduction of fungus is inhibited by virtue of carbon dioxide, fungus action can be effectively prevented and reduced, a lag phase and an exponential phase of fungus growth are prolonged, antiseptic and mold prevention effects are achieved, an anticorrosive phase of the powdered milk is prolonged; nitrogen which is not reacted with food and not absorbed by food is aerated, so that growth and reproduction of fungus is inhibited; the gaseous mixture is used to replace air, so that oxidation and putrefaction of powered milk caused by the existing oxygen in air are prevented; the aerated right amount of carbon dioxide can form liquid carbonic acid with moisture in the powdered milk , so that gas is reduced, minus pressure is formed, and expansion of a packing container is prevented.
Description
Technical field
The invention belongs to fresh-keeping technical field, relate in particular to a kind of controlled atmospheric packing milk powder low-temp antistaling method.
Background technology
Milk powder is that milk is removed to the powder of making after moisture, also has a large amount of protein, fat, carbohydrate, minerals and vitamins etc., is the food being loved by the people.Now, in milk powder when packing container, all can contain a small amount of air, airborne oxygen can with milk powder in fat generation oxidation, cause milk powder to become sour, occur that peculiar smell, shelf-life shorten, milk powder generally can only be guaranteed the quality about 12 weeks.If packing container adopts and vacuumizes, although can extend the shelf life, packing container is easily damaged.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the controlled atmospheric packing milk powder low-temp antistaling method that a kind of fresh keeping time is long, it is characterized in that, comprise the following steps:
A. milk powder is put into packing container;
B. the mist of oxygen-free gas is filled with in packing container to packing container sealing;
C. above-mentioned packing container is put in to the environment storage of 20-25 ℃.
The percentage by volume of the each component of described mist is carbon dioxide 0%-10%, nitrogen 90%-100%.
Mist described in milk powder use 50-100ml described in every 100g.
Beneficial effect of the present invention is: carry out the growth and breeding of Antifungi with carbon dioxide, can effectively stop and reduce fungi activity, extended deadtime and Exponential growth stage that fungi increases, played anticorrosive mildewproof effect, extended the corrosion resistant phase of milk powder; Fill not and food chemically reactive, the nitrogen that do not absorbed by food, also can suppress the growth and breeding of fungi.Use mist replaces air, prevented oxidation and the corruption of the milk powder causing due to the existence of oxygen.Fill appropriate carbon dioxide, carbon dioxide can with milk powder in moisture content form liquid carbonic acid, impel gas to tail off, form micro-negative pressure, avoid packing container expand.Choose the ratio of suitable carbon dioxide and nitrogen, and be equipped with suitable temperature, make the shelf-life of milk powder extend to 52 weeks.
The specific embodiment
Embodiment mono-
A. milk powder is put into packing container;
B. the mist that by percentage by volume is 10% carbon dioxide and 90% nitrogen is filled with in packing container, packing container sealing;
C. packing container is put in to the environment storage of 25 ℃.
Can extend to 50 weeks by the freshness date of the milk powder of above-mentioned steps storage.
Embodiment bis-
A. milk powder is put into packing container;
B. the mist that by percentage by volume is 5% carbon dioxide and 95% nitrogen is filled with in packing container, packing container sealing;
C. packing container is put in to the environment storage of 20 ℃.
Can extend to 52 weeks by the freshness date of the milk powder of above-mentioned steps storage.
Embodiment tri-
A. milk powder is put into packing container;
B. the mist that by percentage by volume is 100% nitrogen is filled with in packing container, packing container sealing;
C. packing container is put in to the environment storage of 22 ℃.
Can extend to 51 weeks by the freshness date of the milk powder of above-mentioned steps storage.
Illustrate and use the mist of properly mixed carbon dioxide and nitrogen to substitute common air by above-mentioned three embodiment, and coordinate suitable consumption and temperature, make the shelf-life of milk powder extend to about 52 weeks from 12 weeks.
Have been described in detail of the present invention by embodiment above, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.
Claims (3)
1. a controlled atmospheric packing milk powder low-temp antistaling method, is characterized in that, comprises the following steps:
A. milk powder is put into packing container;
B. the mist of oxygen-free gas is filled with in packing container to packing container sealing;
C. above-mentioned packing container is put in to the environment storage of 20-25 ℃.
2. a kind of controlled atmospheric packing milk powder low-temp antistaling method as claimed in claim 1, is characterized in that, the percentage by volume of the each component of described mist is carbon dioxide 0%-10%, nitrogen 90%-100%.
3. a kind of controlled atmospheric packing milk powder low-temp antistaling method as claimed in claim 1, is characterized in that, milk powder uses mist described in 50-100ml described in every 100g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589142.7A CN103891881A (en) | 2012-12-31 | 2012-12-31 | Preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210589142.7A CN103891881A (en) | 2012-12-31 | 2012-12-31 | Preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103891881A true CN103891881A (en) | 2014-07-02 |
Family
ID=50983714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210589142.7A Pending CN103891881A (en) | 2012-12-31 | 2012-12-31 | Preservation method by low temperature of MAP (modified atmosphere packaging) powdered milk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103891881A (en) |
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2012
- 2012-12-31 CN CN201210589142.7A patent/CN103891881A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140702 |