CN107495064A - The case of sample low temperature is kept under ultra-high static pressure and its uses method - Google Patents
The case of sample low temperature is kept under ultra-high static pressure and its uses method Download PDFInfo
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- CN107495064A CN107495064A CN201710562082.2A CN201710562082A CN107495064A CN 107495064 A CN107495064 A CN 107495064A CN 201710562082 A CN201710562082 A CN 201710562082A CN 107495064 A CN107495064 A CN 107495064A
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- heat
- cavity
- insulating plug
- sample
- temperature sensor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/015—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with pressure variation, shock, acceleration or shear stress or cavitation
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the case that sample low temperature is kept under a kind of ultra-high static pressure, including container hollow, bottomless and without top, heat-insulated cavity wall is set on the madial wall of container, heat-insulated cavity wall encloses the cavity to be formed and can place sample, the heat-insulating plug in the upper end sealed set of cavity, the heat-insulating plug under the lower end sealed set of cavity；The bottom of temperature sensor lead is within the cavity, and the top of temperature sensor lead is located at outside cavity；Heat-insulated cavity wall, lower heat-insulating plug, upper heat-insulating plug are made by absorbent material.The present invention also provides the method that sample low temperature is kept under the ultra-high static pressure carried out using the device simultaneously.
Description
Technical field
The invention belongs to ultrahigh pressure treatment equipment technical field, being related to during a kind of food ultra high pressure treatment protects sample
Hold the heat insulation and preservation device in zubzero temperature.
Background technology
Superhigh pressure technique is a kind of natural, environmentally friendly food processing mode, and pressure (100~1000Mpa) can be
Food product Transmit evenly, so as to reach homogeneous treatment effect, sterilized suitable for multiple product, Shelf-life.
Because ultra high pressure treatment can avoid high-temperature process so as to preferably keep food its original nutritive value, color and luster and natural wind
Taste so that superhigh pressure technique is increasingly focused on and approved in food-processing industry.
However, because China starts late in terms of superhigh pressure technique, domestic relevant device be only capable of at present normal temperature or in
Temperature is lower to be carried out, it is impossible to is realized that high pressure low temperature (temperature is in subzero) is handled, is caused to lack frozen food grinding in terms of high pressure
Study carefully report.Therefore, in order to preferably study the blunt enzyme mechanism of the sterilization of frozen food under high pressure, realized using certain device high
Press low-temperature treatment just very necessary.
201310168118.0 attemperator be mainly used in keeping high temperature, can be certainly also used to keep low temperature, but entirely
Container is heavy to need special processing, and due to being that its freezing of sealed container and defrosting are required for the long period, sensing also be present
The defects of device installation is inconvenient.
The content of the invention
Simple in construction, easy to use make treated sample in height the technical problem to be solved in the present invention is to provide a kind of
Press the easy heat-proof device and its application method that low temperature (zubzero temperature) and temperature stabilization are kept in processing procedure.
In order to solve the above-mentioned technical problem, the present invention provides the case that sample low temperature is kept under a kind of ultra-high static pressure,
Including container, heat-insulated cavity wall, lower heat-insulating plug, upper heat-insulating plug and temperature sensor lead hollow, bottomless and without top；
Heat-insulated cavity wall is set on the madial wall of container, and heat-insulated cavity wall encloses the cavity to be formed and can place sample, in cavity
Upper end sealed set on heat-insulating plug, the heat-insulating plug under the lower end sealed set of cavity；The bottom of temperature sensor lead is located at
In cavity, the top of temperature sensor lead is located at outside cavity；
The heat-insulated cavity wall, lower heat-insulating plug, upper heat-insulating plug are made by absorbent material.
Improvement as the case that sample low temperature is kept under the ultra-high static pressure of the present invention：Heat-insulated cavity wall, lower heat-insulating plug,
Upper heat-insulating plug is thickness >=2cm sponge.
Further improvement as the case that sample low temperature is kept under the ultra-high static pressure of the present invention：Container is by high pressure resistant
The polythene material of (at least resistance to 700MPa high pressure) is made.
Further improvement as the case that sample low temperature is kept under the ultra-high static pressure of the present invention：Outside container
Temperature sensor is connected with the top of temperature sensor lead.
Further improvement as the case that sample low temperature is kept under the ultra-high static pressure of the present invention：The TEMP
The bottom of device wire is gapless pass through it is within the cavity after upper heat-insulating plug.
The present invention also provides a kind of method that sample low temperature is kept under ultra-high static pressure simultaneously, comprises the following steps：
1), heat-insulated cavity wall is set on the madial wall of container hollow, bottomless and without top, heat-insulated cavity wall encloses to be formed and can put
Put the cavity of sample；
2), the heat-insulating plug under the lower end sealed set of cavity；
3) sample, is placed in cavity；
4), inwall of the temperature sensor lead along cavity is set, the bottom of temperature sensor lead is located at cavity
It is interior；
5) water (distilled water), the heat-insulating plug in the upper end sealed set of cavity, are added into cavity；Continue to heat-insulated cavity wall
Add (distilled water) with upper heat-insulating plug, until heat-insulated cavity wall, lower heat-insulating plug, upper heat-insulating plug adsorb full water (distilled water)；
6), it is put into≤- 20 DEG C of household freezer and is freezed；Until freezing (that is, water is completely formed ice) completely；
7), the container obtained by step 6) is put into high pressure chest, by the top of the temperature sensor lead outside container
Temperature sensor is connected, proceeds by HIGH PRESSURE TREATMENT.
The present invention utilizes water to that ice container is made, and slows down the thawing of ice speed using the water imbibition and low heat conductivity of sponge
Rate, at the same it is different using the freezing point of ice at various pressures, the cavity volume of the container is formed the low temperature for being less than zero degree
Condition and its long period can be made stably to keep the low temperature environment.Another effect of sponge is to be relatively fixed sample to be at
The center of container.The container of the present invention is opened type without capping, after heat-insulated cavity wall, lower heat-insulating plug, upper heat-insulating plug absorb water
Build-up ice by water so as to form an entirety, high pressure can be born.
The present invention has following technical advantage：
(1) freezing state of sample can be kept for a long time under high pressure using the device, so as to realize sample at normal temperatures
High pressure low temperature processing.The main material of the device is the good sponge of heat preservation and insulation, can slow down whole frozen samples
Melt under normal temperature environment, make its it is internal maintain frozen water biphase equilibrium state so that sample maintains freezing point temperature, and freezing point temperature
Degree is different with pressure and change (known theorem).
(2) device can random cut-in temperature sensor, so as to monitor sample and cavity temperature in real time, it is ensured that sample is in
High pressure low temperature state.
(3) material of the present invention is conveniently easy to get, and cost is low, simple for production, is easy to store.Polyethylene can is used for determining for ice
Type；Sponge material compressibility is big, compressible storage；The present invention is open-topped container, and the later stage can be soaked in water, accelerate melt with
Take out sample；Sensor can be removed and installed arbitrarily, without special setting, it is determined that after the condition such as pressure and temp, and the dismountable biography
Sensor.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation for the case that sample low temperature is kept under ultra-high static pressure.
Embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This.
The case of sample low temperature, including appearance hollow, bottomless and without top are kept under embodiment 1, a kind of ultra-high static pressure
Device 1, heat-insulated cavity wall 2, lower heat-insulating plug 3, upper heat-insulating plug 4 and temperature sensor lead 5.
Heat-insulated cavity wall 2 is set on the madial wall of container 1, and heat-insulated cavity wall 2 encloses to form the cavity 6 that can place sample 7 (circle
Cylinder shape cavity), the heat-insulating plug 3 under the lower end sealed set of cavity 6；Inwall of the temperature sensor lead 5 along cavity 6 is set
Put, the bottom of temperature sensor lead 5 is located in cavity 6 (in order to which the temperature detected is more accurate, can also pass temperature
The bottom of sensor wire 5 loads in sample 7)；The heat-insulating plug 4 in the upper end sealed set of cavity 6；Temperature outside container 1
Sensor is connected with the top of temperature sensor lead 5, and temperature sensor can be connected with Computer signal, so as to realize real-time prison
The temperature residing for sample 7 surveyed in cavity 6.
Heat-insulated cavity wall 2, lower heat-insulating plug 3, the sponge that upper heat-insulating plug 4 is thickness >=2cm, to guarantee to keep cryogenic effect.
Container 1 is made up of the polythene material of high pressure resistant (at least resistance to 700MPa high pressure), and the wall thickness of container 1 is 0.2mm.
Experiment one, the specific workflow of the present invention are as follows：
In use, taking out upper heat-insulating plug 4, pending sample 7 (packaging) is put into cavity 6, by temperature sensor
The bottom of wire 5, which is put into cavity 6, (in order to which the temperature detected is more accurate, can fill the bottom of temperature sensor lead 5
Enter in sample 7), distilled water is then added into cavity 6, water adds to a certain amount of rear (water did not had sample 7) and covers heat-insulating plug 4,
Continue to add water to heat-insulated cavity wall 2, lower heat-insulating plug 3, upper heat-insulating plug 4 and be adsorbed full, now, cavity 6 is full of water；It is subsequently placed into ice
Case freezes (minus 20 degrees).Apparatus of the present invention are put into high pressure chest after freezing completely, by the temperature sensor outside container 1
After the top connection temperature sensor of wire 5, HIGH PRESSURE TREATMENT is then carried out.The temperature of sample 7 is in preparatory stages such as connections and just
Beginning boost phase is ascendant trend (still in subzero), and the temperature of sample 7 is with the rise of pressure after certain time
And reduce and (reduced along the freezing point temperature of sample 7), because heat-proof quality is good, the melting process of sample 7 is slow, sample after pressure stability
7 temperature are also maintained at the freezing point temperature of the sample at this pressure.Sample 7 is freezing point temperature (0 degree or so) under normal pressure after release.
Temperature sensor is connected with computer, can monitor cavity 6 and the temperature of sample 7 in real time.
Table 1 is that carrot juice sample is provable in different pressures and the temperature under certain dwell time (10min), the result
Apparatus of the present invention can make equipment just realize that the high pressure low temperature of frozen samples is handled at normal temperatures.
Table 1, sample pressurization after with pressurize at the end of temperature
Note：Can be different according to sample composition difference freezing point temperature；High-tension apparatus cavity volume temperature is 25~33 after pressurization
℃。
Contrast experiment 1-1, distilled water is added until not crossing sample 7 into cavity 6, cover heat-insulating plug 4；After cancellation
Continuous to continue to add water to heat-insulated cavity wall 2, lower heat-insulating plug 3, upper heat-insulating plug 4 and be adsorbed full, remaining is equal to experiment one.
Acquired results are：Under 200MPa, pressurize about 5.5min (keep low temperature time) sample temperature and equipment high pressure chest afterwards
Temperature is identical (being increased to environment temperature).Pressure is higher, is kept for the low temperature time shorter.
Contrast experiment 1-2, distilled water is added until filling cavity 6 into cavity 6, cover heat-insulating plug 4；But not followed by
It is continuous add water to heat-insulated cavity wall 2, lower heat-insulating plug 3, upper heat-insulating plug 4 be adsorbed it is full；Remaining is equal to experiment one.
Acquired results are：Under 200MPa, pressurize 6.5min (keep low temperature time) sample temperature and equipment high pressure chest temperature afterwards
Spend identical (being increased to environment temperature).Pressure is higher, is kept for the low temperature time shorter.
Above-mentioned 2 contrast experiments can not realize prolonged holding low temperature.
Contrast experiment 2, cancel heat-insulated cavity wall 2, lower heat-insulating plug 3, upper heat-insulating plug 4, i.e. directly made with water using container 1
Ice container, remaining is equal to experiment one.
Acquired results are：Under 200MPa, the ice container is all melted into water, sample after pressurize 4.5min (being kept for the low temperature time)
Product temperature degree is increased to environment temperature.Pressure is higher, is kept for the low temperature time shorter.
Finally, it is also necessary to it is noted that listed above is only several specific embodiments of the invention.Obviously, this hair
It is bright to be not limited to above example, there can also be many deformations.One of ordinary skill in the art can be from present disclosure
All deformations for directly exporting or associating, are considered as protection scope of the present invention.
Claims (6)
1. the case of sample low temperature is kept under ultra-high static pressure, it is characterized in that：Including hollow, bottomless and container (1) without top,
Heat-insulated cavity wall (2), lower heat-insulating plug (3), upper heat-insulating plug (4) and temperature sensor lead (5)；
Heat-insulated cavity wall (2) is set on the madial wall of container (1), and heat-insulated cavity wall (2) encloses the cavity to be formed and can place sample (7)
(6), the heat-insulating plug (4) in the upper end sealed set of cavity (6), the heat-insulating plug (3) under the lower end sealed set of cavity (6)；Temperature
The bottom of degree sensor conductor (5) is located in cavity (6), and the top of temperature sensor lead (5) is located at outside cavity (6)；
The heat-insulated cavity wall (2), lower heat-insulating plug (3), upper heat-insulating plug (4) are made by absorbent material.
2. the case of sample low temperature is kept under ultra-high static pressure according to claim 1, it is characterized in that：Heat-insulated cavity wall
(2), lower heat-insulating plug (3), upper heat-insulating plug (4) are thickness >=2cm sponge.
3. the case of sample low temperature is kept under ultra-high static pressure according to claim 2, it is characterized in that：Container (1) by
High voltage bearing polythene material is made.
4. according to the case that sample low temperature is kept under any described ultra-high static pressure of claims 1 to 3, it is characterized in that：Position
It is connected in the temperature sensor of container (1) outside with the top of temperature sensor lead (5).
5. the case of sample low temperature is kept under ultra-high static pressure according to claim 4, it is characterized in that：
The bottom of the temperature sensor lead (5) is gapless interior positioned at cavity (6) afterwards through upper heat-insulating plug (4).
6. the method for sample low temperature is kept under a kind of ultra-high static pressure, it is characterized in that comprising the following steps：
1) heat-insulated cavity wall (2), is set on the madial wall of container (1) hollow, bottomless and without top, heat-insulated cavity wall (2) encloses shape
Into the cavity (6) that can place sample (7)；
2), the heat-insulating plug (3) under the lower end sealed set of cavity (6)；
3) sample (7), is placed in cavity (6)；
4), inwall of the temperature sensor lead (5) along cavity (6) is set, is located at the bottom of temperature sensor lead (5)
In cavity (6)；
5) water, the heat-insulating plug (4) in the upper end sealed set of cavity (6), are added into cavity (6)；Continue to heat-insulated cavity wall (2)
Add water with upper heat-insulating plug (4), until heat-insulated cavity wall (2), lower heat-insulating plug (3), upper heat-insulating plug (4) adsorb full water；
6), it is put into≤- 20 DEG C of household freezer and is freezed；Until freezing completely；
7), the container (1) obtained by step 6) is put into high pressure chest, the temperature sensor lead (5) of container (1) outside will be located at
Top connects temperature sensor, proceeds by HIGH PRESSURE TREATMENT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562082.2A CN107495064A (en) | 2017-07-11 | 2017-07-11 | The case of sample low temperature is kept under ultra-high static pressure and its uses method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562082.2A CN107495064A (en) | 2017-07-11 | 2017-07-11 | The case of sample low temperature is kept under ultra-high static pressure and its uses method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107495064A true CN107495064A (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710562082.2A Withdrawn CN107495064A (en) | 2017-07-11 | 2017-07-11 | The case of sample low temperature is kept under ultra-high static pressure and its uses method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657341A (en) * | 2019-06-30 | 2020-09-15 | 浙江大学 | Device and method for sterilizing durian fruit paste through self-cooling type ultrahigh-pressure liquid-solid phase change |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263061A (en) * | 2013-05-09 | 2013-08-28 | 浙江大学 | Heat insulation apparatus for stabilizing temperature in ultrahigh pressure treatment process of foods |
-
2017
- 2017-07-11 CN CN201710562082.2A patent/CN107495064A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263061A (en) * | 2013-05-09 | 2013-08-28 | 浙江大学 | Heat insulation apparatus for stabilizing temperature in ultrahigh pressure treatment process of foods |
Non-Patent Citations (1)
| Title |
|---|
| SONGMING ZHU ET AL: "Phase transitions during high pressure treatment of frozen carrot juice and influence on Escherichia coli inactivation", 《LWT - FOOD SCIENCE AND TECHNOLOGY》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111657341A (en) * | 2019-06-30 | 2020-09-15 | 浙江大学 | Device and method for sterilizing durian fruit paste through self-cooling type ultrahigh-pressure liquid-solid phase change |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171222 |
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| WW01 | Invention patent application withdrawn after publication |