CN109287738A - The device and method that ethylene is enriched with and is removed in fruit storage - Google Patents
The device and method that ethylene is enriched with and is removed in fruit storage Download PDFInfo
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- CN109287738A CN109287738A CN201811268857.6A CN201811268857A CN109287738A CN 109287738 A CN109287738 A CN 109287738A CN 201811268857 A CN201811268857 A CN 201811268857A CN 109287738 A CN109287738 A CN 109287738A
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- ethylene
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/152—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O ; Elimination of such other gases
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
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- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Storage Of Fruits Or Vegetables (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
The invention discloses the devices for being enriched with and being removed to ethylene in fruit storage, including the enrichment of fruit modified atmosphere fresh-keeping storage, ethylene and removing means, ethylene sensor, ozone sensor, air pump and automatic control system.The invention also discloses the methods for being enriched with and being removed to ethylene in fruit storage based on above-mentioned apparatus.The present invention can not only reduce the ethylene concentration in fruit modified atmosphere fresh-keeping storage; slow down the breathing and aging rate of fruit, Shelf-life, and can guarantee the sense organ and nutritional quality of product; environmental protection, efficiently, without exhaust residual, can be used for the modified atmosphere fresh-keeping storage of scale store fruits.
Description
Technical field
The present invention relates to preserving fruit and vegetable utilizing fields, in particular to a kind of that ethylene is enriched with and is taken off in fruit storage
The device and method removed.
Background technique
Ethylene is a kind of growth hormone that the plants such as fruits and vegetables generate, and has various apparent physiological functions, but highly concentrated
The ethylene of degree makes the respiration enhancing for adopting rear fruits and vegetables, and mature and aging course is accelerated.In addition to this it is possible to accelerate chlorophyll
Decomposition, make fruits and vegetables turn Huang, be unfavorable for the holding and storage, transportation fresh-retaining of fruit-vegetable quality.Therefore, preserving fruit and vegetable utilizing should
The concentration of strict control ethylene gas.The ethylene in storage ambient is removed, the quality of fruits and vegetables is helped to ensure that, extends its shelf
Phase.The side that the method for eliminating ethylene in fruits and vegetables storage ambient at present mainly has oxidation, physical absorption, physics and chemistry to combine
Method, wherein potassium permanganate oxidation method, prolonged processing are easy to cause to corrode to equipment；The physics such as active carbon, zeolite, molecular sieve
Adsorption method low efficiency；In addition, ultraviolet light and ozone treatment are also applied to the removing of ethylene.
Low temperature plasma is because it generates more active material, including ozone, hydrogen peroxide, superoxide anion etc.
The Multiple components such as reactive oxygen species, ultraviolet light, charged particle, photon and high-energy electron, be gradually applied to every field
In.Dielectric barrier discharge low-temperature plasma because its device is easy, flexibly, the plasma of generation is more uniform, stablize and gradually
It is applied to the processing of volatility exhaust gas in the sterilization processing and environment of agricultural product and food.MOFs material be it is a kind of in recent years
Carry out the metal-organic solution deposition material for gas absorption, catalytic field, with biggish specific surface area, better than traditional boiling
The physisorption materials such as stone, active carbon, absorbing to gas has selectivity and high efficiency.In addition, MOFs material is to temperature and pressure
Power is more sensitive, by controlling temperature and pressure, can be realized good ethylene absorption and parsing function.The form of MOFs material
More flexibly, it can be loaded by way of filling and forming film.
Summary of the invention
In order to overcome the disadvantages mentioned above and deficiency of the prior art, the purpose of the present invention is to provide one kind to store in fruit
The device for being enriched with and being removed to ethylene in journey consumes energy low, pollution-free, safe and environment-friendly, reliable, with high efficiency and generally
Applicability.
A further object of the present invention is to provide a kind of to carry out ethylene in fruit storage based on above-mentioned apparatus
The method of enrichment and removing.
The purpose of the present invention is achieved through the following technical solutions:
The device for being enriched with and being removed to ethylene in fruit storage, including fruit modified atmosphere fresh-keeping storage, ethylene are rich
Collection and removing means, ethylene sensor, ozone sensor, air pump and automatic control system；
The ethylene enrichment and removing means include that shell and the electrode plate with high voltage, the dielectric that are set in shell are thin
Film, MOFs thin-film material, grounding electrode plate, copper coil, coil brace, plasma generator support frame；The copper coil is
It two, is relatively arranged on the bottom plate of shell by coil brace, the electrode plate with high voltage and grounding electrode plate pass through plasma
Body generator support frame is installed between two copper coils, and the MOFs thin-film material is attached in grounding electrode plate, described exhausted
Edge dielectric film is attached on electrode plate with high voltage, and the electrode plate with high voltage and grounding electrode plate use interdigital form；
The fruit modified atmosphere fresh-keeping storage is equipped with gas outlet and air inlet；
The gas outlet passes sequentially through the first air valve, air pump is connected with ethylene enrichment and removing means；The air inlet
Pass sequentially through the 4th air valve, ozone sensor is enriched with ethylene and is connected to removing means；
The air pump also passes through the second air valve and is connected with the external world；
The ozone sensor also passes through third air valve and is connected with the external world；
The ethylene sensor is set in fruit modified atmosphere fresh-keeping storage；
Ethylene enrichment and removing means, ethylene sensor, ozone sensor, air pump, the first air valve, the second air valve,
Third air valve and the 4th air valve are electrically connected with automatic control system respectively.
The MOFs thin-film material is heated by the galvanomagnetic-effect that coil generates.
It ethylene is enriched with based on the device for being enriched with and being removed to ethylene in above-mentioned fruit storage and is taken off
The method removed, comprising the following steps:
Fruit is stored in modified atmosphere fresh-keeping storage by S1；
S2 starts automatic control system, opens the first air valve and the 4th air valve, closes second and third air valve, and pump makes fresh-keeping
Gas in library is circulated, and circulating current is enriched with by ethylene and removing means；
In the enrichment of S3 ethylene and removing means, MOFs material carries out rich absorbent to the ethylene in air-flow；
S4 ethylene sensor is monitored the ethylene concentration in fresh-keeping warehouse, when the ethylene concentration in air-flow reach regulation it is dense
When spending, second and third air valve are opened, closes the first air valve and the 4th air valve, stops gas circulation；In electrode plate with high voltage and connect
Apply voltage between ground electrode plate, ethylene be enriched with using ozone sensor and the ozone in removing means exit is monitored,
When monitor value is stablized, it is denoted as A1；
S5 is passed through electric current in coil, heats MOFs material using galvanomagnetic-effect, makes MOFs material warms, ethylene evolution,
The plasma generated using dielectric barrier discharge, the ethylene released is resolved into completely under the catalysis of MOFs material
CO2And H2O；
S6 monitors ozone sensor, when monitor value reaches A1, indicates the ethylene decomposition in ethylene enrichment and removing means
Finish, start cooling process, apply no-voltage between electrode plate with high voltage and grounding electrode plate, by device gas and heating
Amount of residual heat be discharged together.
Fruit is stored in modified atmosphere fresh-keeping storage described in step S1, specifically:
Using with the corrugation case splendid attire fruit that can close circular hole can be opened, then deposited on shelf, to various water
Fruit is classified, and the biggish fruit of acetate releasing quantity is stored close to gas outlet, and the lesser fruit of acetate releasing quantity is at air inlet
It places.
Cooling described in step S6, specifically: restore the absorption property of MOFs material using air-cooling.
Compared with prior art, the present invention has the following advantages and beneficial effects:
1, the present invention uses MOFSThin-film material carries out selective absorbing and release to ethylene, and more traditional adsorbent material includes
Physical absorption including active carbon, zeolite, silica has bigger specific surface area, and space utilization rate is high, reusable rate
Height, it is more stable, efficient and environmentally friendly.
2, in ethylene of the invention enrichment and removing means, using coating technique, make a kind of medium (organic polymer material
Material) it is covered on electrode plate with high voltage in the form of a film, MOFSMaterial is carried in grounding electrode plate in the form of a film, is greatly saved
Discharge space is saved.Low temperature plasma kills fresh-keeping warehouse surrounding air realizing as a kind of emerging foods processing technique
While bacterium, the removing of ethylene is carried out.The device is simple, efficient, easily operated.In addition, a variety of work in low temperature plasma
Property ingredient Synergistic degradation effect is generated to ethylene, and the service life of plasma is extremely short, will not generate residuals, safe and environment-friendly.
Detailed description of the invention
Fig. 1 is enriched with for ethylene during the fruit keeping-freshness storage of the embodiment of the present invention and the schematic diagram of device of removing.
Fig. 2 is the front section view of the ethylene enrichment and removing means of the embodiment of the present invention.
Fig. 3 is the side sectional view of the ethylene enrichment and removing means of the embodiment of the present invention.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the device that ethylene is enriched with and is removed in fruit storage of the present embodiment, including water
Fruit modified atmosphere fresh-keeping storage 1, ethylene enrichment and removing means 2, ethylene sensor 3, ozone sensor 4, air pump 5 and automatic control system
6；The fruit modified atmosphere fresh-keeping storage 1 is equipped with gas outlet 11 and air inlet 12；The gas outlet 11 passes sequentially through the first air valve 7, gas
Pump 5 is enriched with ethylene and removing means 2 is connected；The air inlet 12 passes sequentially through the 4th air valve 8, ozone sensor 4 and second
Alkene enrichment is connected to removing means 2；The air pump 5 is also connected by the second air valve 9 with the external world；The ozone sensor 4 is also
It is connected by third air valve 10 with the external world；The ethylene sensor 3 is set in fruit modified atmosphere fresh-keeping storage 1；
As shown in figures 2-3, the ethylene enrichment and removing means, ethylene sensor, ozone sensor, air pump, the first gas
Valve, the second air valve, third air valve and the 4th air valve are electrically connected with automatic control system respectively.
Electrode plate with high voltage 21, the dielectric that the ethylene enrichment includes shell 26 and be set in shell with removing means
Film 22, MOFs thin-film material 23, grounding electrode plate 24, copper coil 25, coil brace 27, plasma generator support frame
28；The copper coil 25 is two, is relatively arranged on the bottom plate of shell by coil brace 27,21 He of electrode plate with high voltage
Grounding electrode plate 24 is installed between two copper coils 25 by plasma generator support frame 28, the MOFs thin-film material
23 are attached in grounding electrode plate, and the dielectric film 22 is attached on electrode plate with high voltage 21, the electrode plate with high voltage 21
Interdigital form is used with grounding electrode plate 24.
The MOFs thin-film material is heated by the galvanomagnetic-effect that coil generates.The fruit modified atmosphere fresh-keeping storage is for storing
Fruit after all kinds of pickings, such as: banana, mango, pawpaw, apple, the ethylene in fresh-keeping warehouse in gas are process object；It is described
Gas outlet is the outlet that gas is discharged in fresh-keeping warehouse in gas-circulating system；The air inlet is to pass through in gas-circulating system
Gas after filter refills the import in fresh-keeping warehouse；The air valve is for switching ethylene enrichment and removing means and fruit controlled atmosphere
The connection in fresh-keeping warehouse or the external world；The air pump provides power for gas-circulating system；The ethylene enrichment and removing means are used
In the absorption enrichment and removing of ethylene；The ethylene sensor is used to monitor the concentration of ethylene in air-conditioned cold store；The ozone sensing
Device is used to monitor the effect of plasma generation；The automatic control system is for receiving ethylene concentration sensor and ozone concentration
The signal of sensor, the folding of control air valve, air pump work, heating and cooling process, ethylene processor work, and complete entire processing
Work.
The method for being enriched with and being removed to ethylene of device is set forth on base, comprising the following steps:
Fruit is stored in modified atmosphere fresh-keeping storage by S1；
S2 starts automatic control system, opens the first air valve and the 4th air valve, closes second and third air valve, and pump makes fresh-keeping
Gas in library is circulated, and circulating current is enriched with by ethylene and removing means；
In the enrichment of S3 ethylene and removing means, MOFs material carries out rich absorbent to the ethylene in air-flow；
S4 ethylene sensor is monitored the ethylene concentration in fresh-keeping warehouse, when the ethylene concentration in air-flow reach regulation it is dense
When spending, second and third air valve are opened, closes the first air valve and the 4th air valve, stops gas circulation；In electrode plate with high voltage and connect
Apply voltage between ground electrode plate, ethylene be enriched with using ozone sensor and the ozone in removing means exit is monitored,
When monitor value is stablized, it is denoted as A1；
S5 is passed through electric current in coil, heats MOFs material using galvanomagnetic-effect, makes MOFs material warms, ethylene evolution,
The plasma generated using dielectric barrier discharge, the ethylene released is resolved into completely under the catalysis of MOFs material
CO2And H2O；
S6 monitors ozone sensor, when monitor value reaches A1, indicates the ethylene decomposition in ethylene enrichment and removing means
Finish, start cooling process, apply no-voltage between electrode plate with high voltage and grounding electrode plate, by device gas and heating
Amount of residual heat be discharged together；It repeats above operation, circulation carries out the removing operation of ethylene in fruit keeping-freshness storage library.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (5)
1. the device for being enriched with and being removed to ethylene in fruit storage, which is characterized in that including fruit controlled atmosphere
Library, ethylene enrichment and removing means, ethylene sensor, ozone sensor, air pump and automatic control system；
Ethylene enrichment and removing means include shell and the electrode plate with high voltage being set in shell, dielectric film,
MOFs thin-film material, grounding electrode plate, copper coil, coil brace, plasma generator support frame；The copper coil is two
It is a, it is relatively arranged on the bottom plate of shell by coil brace, the electrode plate with high voltage and grounding electrode plate pass through plasma
Generator support frame is installed between two copper coils, and the MOFs thin-film material is attached in grounding electrode plate, the insulation
Dielectric film is attached on electrode plate with high voltage, and the electrode plate with high voltage and grounding electrode plate use interdigital form；
The fruit modified atmosphere fresh-keeping storage is equipped with gas outlet and air inlet；
The gas outlet passes sequentially through the first air valve, air pump is connected with ethylene enrichment and removing means；The air inlet is successively
It is enriched with by the 4th air valve, ozone sensor and ethylene and is connected to removing means；
The air pump also passes through the second air valve and is connected with the external world；
The ozone sensor also passes through third air valve and is connected with the external world；
The ethylene sensor is set in fruit modified atmosphere fresh-keeping storage；
The ethylene enrichment and removing means, ethylene sensor, ozone sensor, air pump, the first air valve, the second air valve, third
Air valve and the 4th air valve are electrically connected with automatic control system respectively.
2. the device for being enriched with and being removed to ethylene in fruit storage according to claim 1, which is characterized in that
The MOFs thin-film material is heated by the galvanomagnetic-effect that coil generates.
3. pair based on the device for being enriched with and being removed to ethylene in any one of the claim 1~2 fruit storage
The method that ethylene is enriched with and is removed, which comprises the following steps:
Fruit is stored in modified atmosphere fresh-keeping storage by S1；
S2 starts automatic control system, opens the first air valve and the 4th air valve, closes second and third air valve, and pump makes in fresh-keeping warehouse
Gas circulated, circulating current pass through ethylene enrichment and removing means；
In the enrichment of S3 ethylene and removing means, MOFs material carries out rich absorbent to the ethylene in air-flow；
S4 ethylene sensor is monitored the ethylene concentration in fresh-keeping warehouse, when the ethylene concentration in air-flow reaches normal concentration
When, second and third air valve are opened, the first air valve and the 4th air valve are closed, stops gas circulation；In electrode plate with high voltage and ground connection
Apply voltage between electrode plate, ethylene is enriched with using ozone sensor and the ozone in removing means exit is monitored, when
When monitor value is stablized, it is denoted as A1；
S5 is passed through electric current in coil, heats MOFs material using galvanomagnetic-effect, makes MOFs material warms, and ethylene evolution utilizes
The plasma that dielectric barrier discharge generates, resolves into CO under the catalysis of MOFs material for the ethylene released completely2With
H2O；
S6 monitors ozone sensor, when monitor value reaches A1, indicates that the ethylene decomposition in ethylene enrichment and removing means finishes,
Start cooling process, apply no-voltage between electrode plate with high voltage and grounding electrode plate, by device gas and heating it is residual
Excess heat is discharged together.
4. the method that ethylene according to claim 3 is enriched with and is removed, which is characterized in that by fruit described in step S1
It is stored in modified atmosphere fresh-keeping storage, specifically:
Using with can open can close circular hole corrugation case contain fruit, then deposited on shelf, to various fruit into
Row classification, the biggish fruit of acetate releasing quantity are stored close to gas outlet, and the lesser fruit of acetate releasing quantity is placed at air inlet.
5. the method that ethylene according to claim 3 is enriched with and is removed, which is characterized in that drop described in step S6
Temperature, specifically: restore the absorption property of MOFs material using air-cooling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811268857.6A CN109287738B (en) | 2018-10-29 | 2018-10-29 | Device and method for enriching and removing ethylene in fruit storage process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811268857.6A CN109287738B (en) | 2018-10-29 | 2018-10-29 | Device and method for enriching and removing ethylene in fruit storage process |
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| CN109287738B CN109287738B (en) | 2021-10-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111671036A (en) * | 2020-06-10 | 2020-09-18 | 烟台大学 | Method for removing trace ethylene, and applicable fruit and vegetable fresh-keeping box and fresh-keeping method |
| CN114487036A (en) * | 2022-01-10 | 2022-05-13 | 海宁微纳芯传感技术有限公司 | MEMS gas sensor with gas enrichment function and working method thereof |
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| CN111671036A (en) * | 2020-06-10 | 2020-09-18 | 烟台大学 | Method for removing trace ethylene, and applicable fruit and vegetable fresh-keeping box and fresh-keeping method |
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| CN114487036A (en) * | 2022-01-10 | 2022-05-13 | 海宁微纳芯传感技术有限公司 | MEMS gas sensor with gas enrichment function and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN109287738B (en) | 2021-10-22 |
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