CN109548858A - A kind of processing method for preserving fruit and vegetable utilizing - Google Patents
A kind of processing method for preserving fruit and vegetable utilizing Download PDFInfo
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- 235000012055 fruits and vegetables Nutrition 0.000 title claims abstract description 167
- 238000003672 processing method Methods 0.000 title claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 276
- 238000012545 processing Methods 0.000 claims abstract description 81
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000001954 sterilising effect Effects 0.000 claims abstract description 38
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 35
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- 230000005284 excitation Effects 0.000 claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 117
- 229910052757 nitrogen Inorganic materials 0.000 claims description 58
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
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- 230000005611 electricity Effects 0.000 claims description 8
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- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 241000208340 Araliaceae Species 0.000 claims description 3
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
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- 230000007246 mechanism Effects 0.000 claims description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 27
- 238000005516 engineering process Methods 0.000 abstract description 24
- 102000004316 Oxidoreductases Human genes 0.000 abstract description 9
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- 239000000243 solution Substances 0.000 description 7
- 241000207199 Citrus Species 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
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- 241000588724 Escherichia coli Species 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 102000003992 Peroxidases Human genes 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 102000019197 Superoxide Dismutase Human genes 0.000 description 2
- 108010012715 Superoxide dismutase Proteins 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
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- 238000012271 agricultural production Methods 0.000 description 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 1
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The present invention provides a kind of processing methods for preserving fruit and vegetable utilizing, the principal element that its applicability defect is influenced in existing preservation technology is found by research, and take the counter-measure of face, by using dry nitrogen oxygen mixed gas, the humidity of nitrogen oxygen mixed gas is controlled in lower range, so that the H in the fresh-keeping active gases that nitrogen oxygen mixed gas passes through plasma producing apparatus excitation generation2O2Concentration is lower than the concentration of hydrogen peroxide threshold value that the oxidase system equilibrium response of fruits and vegetables is destroyed, so that the keeping-freshness storage time of fruits and vegetables is extended, advantageously reduce the popularization and use limitation of preservation technology, and provide the corresponding processing system for being used for preserving fruit and vegetable utilizing, control can not only be adjusted to fresh-keeping activity gas concentration, the ingredient handled for fruits and vegetables sterilization fresh-keeping to meet the fresh-keeping demand of different fruits and vegetables types, hardware cost, later maintenance cost and the operation energy consumption that system building can also be further decreased, preferably ensure sterilization fresh-keeping treatment effect.
Description
Technical field
The present invention relates to article preserving fruit and vegetable utilizing storage technology field more particularly to a kind of processing sides for preserving fruit and vegetable utilizing
Method.
Background technique
Currently, fruit and vegetable preserving method mainly includes chemical method and two kinds of physical method.It is fresh-keeping that chemical method refers mainly to antistaling agent,
Currently used chemical preservative has: plastics, ethylene inorganic agent (absorbent), sterilization and anticorrosion antistaling agent etc..Physical method master
Have: cryopreservation, ca cold storage, decompression storage, electromagnetic radiation storage etc..
Plasma (plasma) is by a large amount of charged particle (comprising free electron, positively charged ion and negatively charged
Ion, there may also be neutral particles) composition non-bound state meta system, be the 4th state existing for substance.Due to freedom
The number density of electronics and cation is approximately equal, and electroneutral is externally presented in plasma on the whole.Plasma technique has been at present
The national economic development fields such as industry, agricultural, national defence, environment, communication are widely used in, before being current Technological research
Edge.Spacecraft is etched into from microelectronic technique to promote, it is aobvious from tv plateform from thin-film material deposition to high current electron emission
Show domestic rubbish disposal, from biological inoculum mutagenesis to human body wound healing, from material surface modifying to medical sterilizing etc.,
Low temperature plasma uniqueness has been fully demonstrated without alternative characteristic.It is compared with the traditional method, lower temperature plasma technology is answered
All have the advantages that used in various fields very significant: in terms of being modified processing to material surface, there is at low cost, nothing to give up
Gurry, it is pollution-free the advantages that；In terms of sterilizing with high security, drug residue free, sterilization time be short, non-environmental-pollution
The advantages that；With low energy consumption, high-efficient, process flow is short, the scope of application in terms of to each pollutant (exhaust gas, waste water) processing
The advantages that wide.Particularly, plasma has remarkable advantage in terms of sterilizing.It can be killed as a kind of broad-spectrum sterilization technology
It goes out a plurality of types of microorganisms, and bactericidal effect is very significant.Gu Chunying etc. carries out microorganism in water with plasma-ozone
Sterilization after acting on 15min, it is found that the killing rate of staphylococcus aureus and Escherichia coli reaches 99.9%.Shi Xingmin etc. is utilized
Dielectric barrier discharge and dielectric impedance corona discharge, kill staphylococcus aureus and Escherichia coli, as the result is shown 90s
Both interior logarithm of killing has reached 5, significant effect.
In view of plasma discharge bactericidal effect, good and nontoxic noresidue, has scholar to be applied the processing in fruits and vegetables
In.Fruits and vegetables are carried out using plasma at this stage, and controlled atmosphere mainly is carried out to realize fresh-keeping function, such as Ma Ting to storage ambient
Army is adjusted environment in storeroom using plasma in " a kind of method that low temperature plasma is used for preserving fruit and vegetable utilizing ",
Its device discharging product is uncontrollable, cannot achieve and connects effective processing to fruit and vegetable surfaces progress fast direct；Equality is opened in " plasma
Body decompression fresh-keeping storage method " in plasma is integrated in subatmospheric pressure storage, but it is also for the adjusting of storage environment,
Its plasma density is lower, and plasma discharge product is also uncontrollable, cannot achieve quickly direct to fruit and vegetable surfaces progress
Effective processing.
These problems of the existing technology are directed to, main inventive people of the invention is applying for China's hair before this
Bright patent application " fresh-keeping system and its preservation method based on plasma-generating technologies " (number of patent application:
201710056064.7) it, provides to excite using air by plasma producing apparatus and generates active gases progress agricultural production
The fresh-keeping technology of product, when having reached controllable product, agricultural products fresh-keeping for above-mentioned existing plasma preservation technique
Between extended good effect.But it is found in the prolonged application in later period, the antistaling storing technology is for some species of fruits and vegetables (example
Such as citrus fruit) fresh-keeping effect and ideal not as good as other type fruits and vegetables, it is insufficient to still remain fruits and vegetables type broad applicability
Defect, affect the popularization and use of the technology.
Therefore, the reason of leading to above-mentioned applicability defect is developed, and finds corresponding counter-measure, thus more efficient
Sterilization fresh-keeping processing is subject to different fruits and vegetables types, the lift technique scope of application, become further have it is to be solved new
Problem.
Summary of the invention
Aiming at the above shortcomings existing in the prior art, the purpose of the present invention is to provide a kind of places for preserving fruit and vegetable utilizing
Reason method makes up fruits and vegetables present in existing postharvest technology of fruits and vegetables for promoting the fresh-keeping scope of application to different fruits and vegetables types
The insufficient defect of type broad applicability, to reduce the popularization and use limitation of preservation technology.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of processing method for preserving fruit and vegetable utilizing is excited using dry nitrogen oxygen mixed gas by plasma producing apparatus
Fresh-keeping active gases is generated, and the fresh-keeping active gases is acted on fruits and vegetables, to carry out sterilization fresh-keeping processing to fruit.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, specifically, the effective active in the fresh-keeping active gases
Ingredient includes O3、NxOyAt least one of, x, y are the natural number for meeting nitrogen, oxygen element chemical combination relationship.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the nitrogen oxygen mixed gas of the drying is adopted
With the mixed gas of dry nitrogen and oxygen.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, when the nitrogen oxygen atmosphere of the drying used
Nitrogen oxygen volume ratio N in body2: O2When for 78:22 between 77:23, the nitrogen oxygen mixed gas of the drying using dry nitrogen and
The mixed gas of oxygen, or using dry air.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the place of preserving fruit and vegetable utilizing to be used for by constructing
Reason system is implemented, the processing system for preserving fruit and vegetable utilizing include gas supply device, plasma producing apparatus,
Control device and accommodating treatment box；For placing the fruit and vegetable food stored to Preservation Treatment in the accommodating treatment box；It is described
The gas delivery outlet of gas supply device is connected with the air inlet of plasma producing apparatus, for occurring to plasma
Device provisioning dry unstrpped gas includes nitrogen and oxygen in the unstrpped gas；The plasma producing apparatus goes out
Port is connected with accommodating treatment box, for exciting nitrogen and the fresh-keeping active gas of oxygen gas component generation in dry unstrpped gas
Body is delivered in accommodating treatment box；The control device carries out electricity with gas supply device and plasma producing apparatus respectively
Signal connection, for controlling the starting and closing of gas supply device and plasma producing apparatus, and for controlling gas confession
The running parameter of device or/and plasma producing apparatus is answered, so that gas supply device and plasma producing apparatus energy
Enough cooperatings generate fresh-keeping active gases corresponding with the type of the fruits and vegetables to Preservation Treatment；The processing method includes following
Step:
1) fruits and vegetables to be processed are put into accommodating treatment box；
2) control starting gas supply device and plasma producing apparatus, so that gas supply device is filled to plasma
The dry nitrogen oxygen mixed gas of input is set, and gas supply device is controlled by control device or/and plasma fills
The running parameter set；
3) fresh-keeping active gases is generated by plasma producing apparatus excitation, is passed through in accommodating treatment box and acts on fruits and vegetables,
To carry out sterilization fresh-keeping processing to fruit.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the gas supply device includes oxygen processed
Machine, nitrogen making machine and gas supply proportion adjustment unit；The oxygenerator, nitrogen making machine are respectively used to prepare oxygen and nitrogen；The gas supply
Proportion adjustment unit is for controlling to adjust the volume ratio that gas supply device externally exports oxygen and nitrogen.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, as further preferred scheme, the gas supply device is also
Including drying device, for the unstrpped gas that gas supply device externally exports to be dried.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the running parameter packet of gas supply device
Include the volume ratio of supplied oxygen and nitrogen；The ratio of nitrogen to oxygen control signal output and gas supply proportion adjustment of the control device
The control signal of unit carries out electric signal connection, for controlling signal to gas supply proportion adjustment unit output ratio of nitrogen to oxygen, with
So that gas supply proportion adjustment unit controls to adjust it, externally the volume ratio of supply oxygen and nitrogen is located at the ratio of nitrogen to oxygen threshold set
It is worth in range.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, gas supply device includes that air is supplied gas
Device, and the gas drier being connected with the air outlet of air air supply plant, the gas of the gas drier go out
Gas delivery outlet of the mouth end as gas supply device.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the work of the plasma producing apparatus
It include that power occurs for plasma as parameter；The pressure regulation signal output end of the control device and the electricity of plasma producing apparatus
It presses control terminal to carry out electric signal connection, controls plasma to the operating voltage by adjusting ion generating device and fill
Power occurs for the plasma set.
In the above-mentioned processing method for preserving fruit and vegetable utilizing, preferably, the accommodating treatment box includes for putting
The accommodating cavity of storage fruit and vegetable food, and the inlet channel and outlet passageway that are connected with the accommodating cavity are set, in the accommodating
It is intracavitary to be provided with fan, automatically controlled intake valve and automatically controlled air outlet valve are further respectively had on the inlet channel and outlet passageway；Institute
It states automatically controlled intake valve, automatically controlled air outlet valve and fan of the valve control signal end of control device respectively with accommodating treatment box and carries out electricity
Signal connection, for controlling the opening/closing of the automatically controlled intake valve, automatically controlled air outlet valve and fan, is filled with controlling plasma
It sets and is passed through the air inflow of fresh-keeping active gases into accommodating treatment box and accommodates the exhaust emissions amount for the treatment of box, and pass through fan
Operating makes to accommodate the gas flowing in treatment box and is uniformly mixed, so that the fresh-keeping activity gas concentration in accommodating treatment box is default
Concentration threshold within the scope of.
It is described for preserving fruit and vegetable utilizing as further preferred scheme in the above-mentioned processing method for preserving fruit and vegetable utilizing
The control flow of processing system specifically:
A) fan in accommodating treatment box is opened in control device control；
B) the automatically controlled intake valve and automatically controlled air outlet valve of accommodating treatment box are opened in control device control, are started gas supply device and are waited
Gas ions generating device, and control by control device the work ginseng of gas supply device or/and plasma producing apparatus
Number is made to accommodate so that plasma producing apparatus excitation generates fresh-keeping active gases and is passed through in accommodating treatment box by fan operation
Gas flowing in treatment box is uniformly mixed；
C) the is waitediSecondary gas supply time Ti, then execute the step d)；
D) gas supply device and plasma producing apparatus are closed in control device control, and control the electricity for closing accommodating treatment box
Control intake valve and automatically controlled air outlet valve；
E) the is waitediSecondary processing time Δ Ti, then return and execute the step b)；
F) circulation executes step b) ~ e)NIt is secondary, i.e.,iValue from 1 successively value toN,NIt is complete for preset circular treatment total degree
After processing, the fan in accommodating treatment box is closed in control device control.
Compared with the prior art, the invention has the following advantages:
1, the present invention is used for the processing method of preserving fruit and vegetable utilizing, by using dry nitrogen oxygen mixed gas, the i.e. mixing of control nitrogen oxygen
The humidity of gas is in lower range, so that the fresh-keeping work that nitrogen oxygen mixed gas is generated by plasma producing apparatus excitation
H in property gas2O2Concentration is reduced very lower than the concentration of hydrogen peroxide threshold value that the oxidase system equilibrium response of fruits and vegetables is destroyed
To avoiding because of H2O2Excessive concentration leads to the problem of fruit-vegetable plant Tissue Browning, so that the keeping-freshness storage time of fruits and vegetables obtains after processing
To extend, the fresh-keeping scope of application to different fruits and vegetables types is improved, advantageously reduces the popularization and use limitation of preservation technology.
2, the corresponding processing system for being used for preserving fruit and vegetable utilizing is additionally provided in the processing method for preserving fruit and vegetable utilizing of the invention
System can be adjusted control to fresh-keeping activity gas concentration, the ingredient for fruits and vegetables sterilization processing to meet different fruits and vegetables kinds
The fresh-keeping demand of class.
3, in the processing method for preserving fruit and vegetable utilizing of the invention, the processing system of preserving fruit and vegetable utilizing can also be used for by optimizing
The design of system further decreases hardware cost, later maintenance cost and the operation energy consumption of system building, preferably ensures to sterilize and protect
Fresh treatment effect.
4, the processing method for preserving fruit and vegetable utilizing of the invention and its processing system for preserving fruit and vegetable utilizing have good
Marketing application prospect.
Detailed description of the invention
Fig. 1 is method schematic of the present invention for the processing method of preserving fruit and vegetable utilizing.
Fig. 2 is a kind of frame construction signal of processing system for preserving fruit and vegetable utilizing suitable for processing method of the present invention
Figure.
Fig. 3 is a kind of frame construction signal of processing system for preserving fruit and vegetable utilizing suitable for processing method of the present invention
Figure.
Control device controls fresh-keeping activity gas concentration in accommodating treatment box in Fig. 4 processing method of the present invention
A kind of concrete mode flow chart.
Specific embodiment
The present invention is carried out for the processing method of preserving fruit and vegetable utilizing with reference to the accompanying drawings and detailed description further
Explanation.
For application for a patent for invention " fresh-keeping system and its preservation method based on plasma-generating technologies " (patent application
Number: 201710056064.7) the agricultural products fresh-keeping scheme provided in is for some species of fruits and vegetables (such as the fruits such as citrus)
The bad problem of fresh-keeping effect, the present inventor expand technology analysis and research, within long period of time, do not have
It is found the reason of causing its applicability defect；Later by the analysis test, using citrus as fresh-keeping object, analyzing fresh-keeping
Ingredient has found technology crux in the citrus fruit of failure.
Since the plant tissue brown stain of fruits and vegetables is related with intracellular reduced level and enzymatic protective system, in usual situation
Under, there is higher reduction potential in tissue, normal redox metabolism balance makes oneself pass through oxygen reduction by the quinones substance through aoxidizing
Change or convert without poly- and.Enzymatic protective system includes two substances, one of them is oxidase system: various oxidizing ferment act on
Different substrate, while common trait is oxidation substrates, also by hydrogen reduction at hydrogen peroxide: RH2 + O2→R + H2O2。
When content of hydrogen peroxide constantly increases (that is, reaction product concentration raising) to a certain extent in the reaction system, will lead to
It states and reacts by different degrees of inhibition, under this adverse circumstance, superoxide dismutase (SOD), peroxidase (POD), peroxide
Change the oxidation such as hydrogen enzyme (CAT) enzyme effect imbalance, hydrogen peroxide is caused to accumulate, forms vicious circle, it is brown so as to cause plant tissue
The generation of change.Different fruits and vegetables type, so that the concentration of hydrogen peroxide threshold value that is destroyed of its oxidase system equilibrium response is not yet
It is identical.
Therefore, the reason for causing citrus fresh-keeping effect bad is: being excited and is produced by plasma producing apparatus in air
In raw active gas component, not for gaseous state hydrogen peroxide (the hydrogen peroxide H for being considered to belong to effective sterilization component originally2O2,
By in air vapor and oxygen by plasma producing apparatus excite and generate) concentration be controlled, be more than citrus
The concentration of hydrogen peroxide threshold value that oxidase system equilibrium response is destroyed leads to citrus oxidation enzyme effect imbalance, hydrogen peroxide product
It is tired, and vicious circle fails to reach the expected antistaling storing time so as to cause citrus plant tissue brown stain.
It is found based on the studies above, the counter-measure that technology inventor of the invention finds, provides a kind of new be used for
The processing method of preserving fruit and vegetable utilizing, that is, fresh-keeping by plasma producing apparatus excitation generation using dry nitrogen oxygen mixed gas
Active gases, and the fresh-keeping active gases is acted on fruits and vegetables, to carry out sterilization fresh-keeping processing to fruit.It is described here
Drying nitrogen oxygen mixed gas, refer to less than one preset humidity threshold of humidity of nitrogen oxygen mixed gas, the humidity threshold
It is to ensure that " nitrogen oxygen mixed gas is generated the H in fresh-keeping active gases by plasma exciatiaon2O2Concentration will be lower than fruits and vegetables oxidizing ferment
The nitrogen oxygen mixed gas humidity limit value of the concentration of hydrogen peroxide threshold value that system balancing characteristic is destroyed ".That is, of the invention
For the processing method of preserving fruit and vegetable utilizing, the humidity by using dry nitrogen oxygen mixed gas, i.e. control nitrogen oxygen mixed gas exists
Lower range, so that in fresh-keeping active gases of the nitrogen oxygen mixed gas by plasma producing apparatus excitation generation
H2O2It largely reduces, concentration reduction, as long as H2O2Concentration is lower than the hydrogen peroxide that the oxidase system equilibrium response of fruits and vegetables is destroyed
Concentration threshold just can be reduced or even be avoided because of H2O2Excessive concentration causes the problem of fruit-vegetable plant Tissue Browning, meanwhile, by nitrogen
The O that oxygen gas mixture is generated by plasma producing apparatus excitation3(ozone), NxOyEffective active compositions such as (nitrogen oxides)
The effect of sterilization fresh-keeping still can be effectively provided, so that when fruits and vegetables are by the method for the present invention treated keeping-freshness storage
Between extended.The processing method using the present invention for preserving fruit and vegetable utilizing can effectively be suitable for more fruits and vegetables types as a result,
Long-time keeping-freshness storage, that is, improve and the scope of application handled to the sterilization fresh-keepings of different fruits and vegetables types, compensate for patent of invention
Apply for " fresh-keeping system and its preservation method based on plasma-generating technologies " (number of patent application: in 201710056064.7)
The applicability deficiency defect of fresh-keeping scheme is provided, therefore it is beneficial to reduce the popularization and use of preservation technology limitations.
It should be noted that for different fruits and vegetables types, the H that oxidase system equilibrium response is destroyed2O2Concentration threshold
Be worth it is different, therefore, using the method for the present invention to different fruits and vegetables types carry out sterilization fresh-keeping processing needed for nitrogen oxygen atmosphere
The corresponding humidity threshold of body is also different；But, for every kind of fruits and vegetables type, the H that oxidase system equilibrium response is destroyed2O2
Concentration threshold can be verified by experiment it is determining, meanwhile, nitrogen oxygen mixed gas under the conditions of different humidity by it is equal from
The excitation of daughter generating device generates the H in fresh-keeping active gases2O2Concentration can also be determined by experiment, thus just can be led to
It crosses experiment experience and determines the corresponding humidity threshold of nitrogen oxygen mixed gas carried out needed for sterilization fresh-keeping is handled to different fruits and vegetables types.
In addition, the nitrogen oxygen mixed gas of drying of the present invention, refers to comprising nitrogen and oxygen and humidity is less than preset humidity threshold
The mixed gas of value.And because the types of different its disease fungi of fruits and vegetables type is not quite similar, kill needed for fungi it is effective at
Divide and also just accordingly have differences, therefore in order to improve sterilization processing efficiency, is passing through plasma using dry nitrogen oxygen mixed gas
It, can be respectively targetedly using specific for different fruits and vegetables types when the excitation of body generating device generates fresh-keeping active gases
The drying nitrogen oxygen mixed gas of nitrogen oxygen mixed proportion, so that O in the effective active composition of the fresh-keeping active gases generated3And
NxOyThe ratio of equal product components is more advantageous to the preserving fruit and vegetable utilizing storage in later period more suitable for the sterilization processing of corresponding fruits and vegetables type.
It, can also be with for the nitrogen oxygen mixed proportion of the required dry nitrogen oxygen mixed gas of different fruits and vegetables types in specific implementation
It is determined by experiment experience；The drying nitrogen oxygen mixed gas of different nitrogen oxygen mixed proportions, can by prepare respectively drying nitrogen,
It is obtained by mixing in proportion after oxygen, and under specific circumstances, if the nitrogen oxygen mixture of required dry nitrogen oxygen mixed gas
Product compares N2: O2It is 78:22 between 77:23, in addition to dry nitrogen and oxygen mix can be used to obtain dry nitrogen oxygen atmosphere
Except body, it can also be used using dry air as dry nitrogen oxygen mixed gas, it is mixed compared to nitrogen, oxygen is directlyed adopt
It is lower using the gas cost of air for closing gas, it is worth with more industrial implementation.
Above-mentioned technical thought, need be by a set of processing system for preserving fruit and vegetable utilizing implement it is above-mentioned for fruit
The fresh-keeping processing method of vegetable, thus the present invention provide accordingly it is a kind of for implement above-mentioned processing technique for preserving fruit and vegetable utilizing
Processing system scheme, as shown in Fig. 2, this is used for the processing system of preserving fruit and vegetable utilizing, including gas supply device 1, plasma
Generating device 2, control device 3 and accommodating treatment box 4.Wherein, for placing storage to Preservation Treatment in accommodating treatment box 4
Fruit and vegetable food.The gas delivery outlet of gas supply device 1 is connected with the air inlet of plasma producing apparatus 2, for
Plasma producing apparatus supplies dry unstrpped gas, includes nitrogen and oxygen in the unstrpped gas.Plasma occurs
The gas outlet of device 2 is connected with accommodating treatment box 4, for exciting nitrogen and oxygen gas component generation in dry unstrpped gas
Fresh-keeping active gases is delivered in accommodating treatment box, to carry out sterilization fresh-keeping processing to the fruits and vegetables in accommodating treatment box.Control
Device 3 carries out electric signal connection with gas supply device 1 and plasma producing apparatus 2 respectively, for controlling gas supply dress
Set the starting and closing of 1 and plasma producing apparatus 2, and for controlling gas supply device 1 or/and plasma fills
Set 2 running parameter so that gas supply device 1 and plasma producing apparatus 2 can cooperating generate with to fresh-keeping
The corresponding fresh-keeping active gases of the type of the fruits and vegetables of processing, " correspondence " here, which refers to that needs generate, can satisfy accommodating processing
The fresh-keeping active gases of the fresh-keeping requirement of the type of fruits and vegetables in case.The present invention can for the processing method of preserving fruit and vegetable utilizing as a result,
With design specifically includes the following steps:
1) fruits and vegetables to be processed are put into accommodating treatment box；
2) control starting gas supply device and plasma producing apparatus, so that gas supply device is filled to plasma
The dry nitrogen oxygen mixed gas of input is set, and gas supply device is controlled by control device or/and plasma fills
The running parameter set；
3) fresh-keeping active gases is generated by plasma producing apparatus excitation, is passed through in accommodating treatment box and acts on fruits and vegetables,
To carry out sterilization fresh-keeping processing to fruit.
Processing method of the invention can be used for carrying out the processing before fruits and vegetables storage, can also use in fruits and vegetables storage
It is handled in fruits and vegetables, it is therefore an objective to which fruits and vegetables are killed in the fresh-keeping active gases processing generated by plasma producing apparatus excitation
The harmful bacterias such as the fungi of product surface reduce fruit and vegetable food and rot to reduce the disease of the harmful bacterias such as fungi；Thus at sterilization
Fruits and vegetables after reason can continue to be placed on antistaling storing in accommodating treatment box, also can move to other storage spaces and (such as store
Library, fresh-keeping atmosphere storeroom of fresh-keeping instrument etc.) antistaling storing is carried out, the longer antistaling storing time can be obtained.
In the realization of specific technology, control device can use host computer, PC, laptop, have place
The electronic devices such as the mobile terminal device of reason ability are achieved.Plasma producing apparatus can be by current plasma
Body technique is developed and is obtained.
Gas supply device 1 can be designed using oxygenerator 11,12 combining air feeding proportion adjustment unit 13 of nitrogen making machine and structure
At；Oxygenerator 11, nitrogen making machine 12 are respectively used to prepare oxygen and nitrogen；Gas supply proportion adjustment unit 13 is for controlling to adjust gas
Feeding mechanism externally exports the volume ratio of oxygen and nitrogen.Herein, it adjusts oxygen and the purpose of nitrogen volume ratio is to be directed to
Active gases is targetedly insured in different fruits and vegetables type offers, more effectively to carry out the sterilization processing of fruit and vegetable surfaces, improves
Treatment effeciency and subsequent fresh-keeping effect.In the gas supply device of the design, the volume ratio of oxygen and nitrogen is externally supplied,
It is to need to be adjusted the running parameter of control by control device to realize；For this purpose, the nitrogen oxygen of control device 3 can be designed
The control signal of ratio control signal output end and gas supply proportion adjustment unit 13 carries out electric signal connection, is used for delivery ratio
Example adjust unit output ratio of nitrogen to oxygen control signal so that gas supply proportion adjustment unit control to adjust its externally supply oxygen with
The volume ratio of nitrogen is located in the ratio of nitrogen to oxygen threshold range of setting, and set ratio of nitrogen to oxygen threshold range then needs basis
Depending on the fruits and vegetables type of Preservation Treatment.And the way of realization for supplying proportion adjustment unit can be there are many design method；Example
Such as, gas supply proportion adjustment unit 13 can be the gas mixing box having there are two flow controllable air inlet, thus will oxygen processed
The oxygen of machine preparation, the nitrogen of nitrogen making machine preparation pass through two flow controllable air inlets respectively and are passed through to mixing in gas mixing box
It for nitrogen oxygen mixed gas, then exports to plasma producing apparatus, control can be adjusted by two flow controllable air inlets
Regulating gas feeding mechanism externally exports the volume ratio of oxygen and nitrogen；In another example gas supply proportion adjustment unit 13 can also be set
It is calculated as exactly two and is separately mounted to 11 delivery outlet of oxygenerator, the flow valve (mode as shown in Figure 2) on 12 delivery outlet of nitrogen making machine,
Independently to control oxygen, nitrogen supply (NS) flow, oxygenerator delivery outlet, nitrogen making machine delivery outlet are then respectively communicated with plasma
Body generating device, thus by respectively adjust two flow valves uninterrupted, come adjust control to adjust gas supply device to
The volume ratio of plasma producing apparatus supply oxygen and nitrogen.
In the technology of gas supply device is realized, oxygenerator, nitrogen making machine are mature industrial equipments, and industry at present
Nitrogen making machine and oxygenerator, the gas componant of output is more dry, therefore in the dry of nitrogen making machine and oxygenerator output gas
In the case that dry degree (i.e. gas humidity) meets use condition, it is not usually required to the gas prepared to it and carries out at additional drying
Reason.Certainly, if in the case where the degree of drying of nitrogen making machine and oxygenerator output gas is not met by use condition, such as scheme
Shown in 2, then it can also increase what setting drying device 14 was used to externally supply gas supply device in gas supply device 1
Unstrpped gas is dried, and to further decrease unstrpped gas humidity, is used for preferably guaranteeing to meet the present invention
The demand for unstrpped gas degree of drying of the processing method of preserving fruit and vegetable utilizing.
And as a kind of special cases, if the fresh-keeping active gases needed for the fruits and vegetables type to Preservation Treatment is proper
Nitrogen oxygen volume ratio N can be passed through well2: O2When exciting generation for the nitrogen oxygen mixed gas of 78:22 to 77:23, from the building of the system of saving
From the point of view of cost, nitrogen oxygen volume ratio N2: O2It can then be replaced using air by the nitrogen oxygen mixed gas of 78:22 to 77:23,
Therefore as shown in figure 3, the gas supply device 1 in system, which can be designed, replaces oxygenerator and system using air air supply plant 15
Nitrogen machine, and add the gas drier 14 being connected in the air outlet of air air supply plant 15 and be air-dried place to carry out
Reason, and the gas outlet end of gas drier 14 is then used as the gas delivery outlet of gas supply device 1, sends out with plasma
The air inlet of generating apparatus 2 is connected, and supplying to plasma producing apparatus 2 makes by the air being dried as unstrpped gas
With.Meanwhile it is also lower to use air as the gas cost that unstrpped gas uses, and is worth with more industrial implementation.
For the processing system for preserving fruit and vegetable utilizing, the fresh-keeping active gases supplied into accommodating treatment box has
Imitate active constituent, in addition to and gas supply device to plasma producing apparatus supply oxygen it is related with the volume ratio of nitrogen, also
It is related that power occurs with the plasma of plasma producing apparatus, and plasma occurs power and is also related to plasma hair
Generating apparatus excitation generates the concentration of fresh-keeping active gases, and in the sterilization processing to fruits and vegetables, fresh-keeping active gases has to reach
Certain concentration range could be sterilized effectively.Therefore, power occurs for the plasma of plasma producing apparatus, also belongs to needs
The running parameter of control is adjusted by control device.In order to realize that function occurs for the plasma of plasma generating device
Rate adjusts control, can design the voltage control of the pressure regulation signal output end and plasma producing apparatus of control device in systems
End processed carries out electric signal connection, controls plasma to the operating voltage by adjusting plasma producing apparatus and fills
Power occurs for the plasma set.It, can be according to different fruits and vegetables kinds by the power adjustable characteristic of plasma producing apparatus
The concentration of fresh-keeping active gases and effective active composition demand needed for class, joint are reconciled the volume ratio of oxygen and nitrogen and are waited
The power of gas ions generating device, to reach optimal sterilization processing effect.
Further, since need fresh-keeping active gases to reach certain concentration range the sterilization processing of fruits and vegetables, excessive concentration,
The too low effective sterilization for being all unfavorable for fruits and vegetables, and cooperate control plasma producing apparatus that power occurs with higher plasma
In the case where work, then plasma producing apparatus is supplied to the fresh-keeping active gases of accommodating treatment box to may be above fruits and vegetables
Fresh-keeping demand.It is directed to this case, application for a patent for invention " fresh-keeping system and its fresh-keeping side based on plasma-generating technologies
Method " (number of patent application: the coping style used in 201710056064.7) is that plasma generating device is handled to accommodating
The fresh-keeping active gases of case output is subject to additional dilution processing, but it is ideal solution that this, which is not, because additionally carrying out dilute
Processing is released, not only need to increase gas dilution processing equipment and maintains the additional energy of its work, the system of will lead to is built into
Originally, the increase of maintenance cost and operation energy consumption, while additional dilution processing is also possible to increase and introduces indefinite foreign gas dirt
The risk in dye source influences fruits and vegetables sterilization processing effect.
It is directed to this problem, in the present invention, gives another more preferably solution.In the solution,
As shown in Figures 2 and 3, needing to design for the accommodating treatment box 4 in the processing system of preserving fruit and vegetable utilizing includes for placing storage
The accommodating cavity 41 of fruit and vegetable food, and the inlet channel and outlet passageway that are connected with the accommodating cavity, in the inlet channel
With automatically controlled intake valve 42 and automatically controlled air outlet valve 43 are further respectively had on outlet passageway, in addition, being also provided with fan in accommodating cavity
44；Correspondingly, needing the valve control signal end of matching design control device 3 and automatically controlled intake valve 42, the electricity of accommodating treatment box
Control air outlet valve 43 carries out electric signal with fan 44 and connects, for controlling the automatically controlled intake valve 42, automatically controlled air outlet valve 43 and fan
44 it is opening/closing, be passed through the air inflow and appearance of fresh-keeping active gases to control plasma producing apparatus into accommodating treatment box
The exhaust emissions amount for the treatment of box is set, and makes to accommodate the gas flowing in treatment box by fan running and is uniformly mixed, so that accommodating
Fresh-keeping activity gas concentration in treatment box is within the scope of preset concentration threshold.In actual application scenarios, in order to ensure
Accommodate treatment box can carry out sterilization fresh-keeping processing to enough fruits and vegetables, the volume of accommodating cavity is generally large, tends to reach
It to cubic meter magnitude, therefore handles in storehouse and itself has large quantity of air, its fresh-keeping active gases that dilution is passed through can be borrowed to reach
To required concentration range.By this thinking, the structure of accommodating treatment box and control device in inventive solution cooperates
Design enables control device to control the opening/closing of the automatically controlled intake valve and automatically controlled air outlet valve accommodated on treatment box, just with control
Plasma producing apparatus is passed through the air inflow of fresh-keeping active gases into accommodating treatment box and accommodates the tail gas row for the treatment of box
High-volume, the fresh-keeping activity gas concentration adjusted in accommodating treatment box reaches preset concentration threshold range, meanwhile, in order to enable logical
Enter to the fresh-keeping active gases in accommodating treatment box to reach and quickly flow uniform purpose, in the accommodating cavity of accommodating treatment box also
It is provided with fan, the gas to make to accommodate by fan running in treatment box, which flows, to be uniformly mixed, gas inside enhancing accommodating cavity
The self-loopa of stream can make being more evenly distributed and enhancing mobility for fresh-keeping active gases, further promote fresh-keeping active gas
Sterilization processing effect of the body to fruits and vegetables in accommodating treatment box.Thus eliminate arrangement gas dilution device generate hardware at
Originally, later maintenance cost is decreased because of part energy consumption cost needed for maintaining the work of gas dilution device, is also avoided simultaneously
It because dilution introduces the risk of foreign gas, therefore is more preferably solution.
Using the structure matching design of above-mentioned accommodating treatment box and control device, the present invention is used for the processing system of preserving fruit and vegetable utilizing
The control flow of system can be designed as control flow as shown in Figure 4:
A) fan in accommodating treatment box is opened in control device control；
B) the automatically controlled intake valve and automatically controlled air outlet valve of accommodating treatment box are opened in control device control, are started gas supply device and are waited
Gas ions generating device, and control by control device the work ginseng of gas supply device or/and plasma producing apparatus
Number is made to accommodate so that plasma producing apparatus excitation generates fresh-keeping active gases and is passed through in accommodating treatment box by fan operation
Gas flowing in treatment box is uniformly mixed；
C) the is waitediSecondary gas supply time Ti, then execute the step d)；
D) gas supply device and plasma producing apparatus are closed in control device control, and control the electricity for closing accommodating treatment box
Control intake valve and automatically controlled air outlet valve；
E) the is waitediSecondary processing time Δ Ti, then return and execute the step b)；
F) circulation executes step b) ~ e)NIt is secondary, i.e.,iValue from 1 successively value toN,NIt is complete for preset circular treatment total degree
After processing, the fan in accommodating treatment box is closed in control device control.
In the process flow, it is directed to different types of fruits and vegetables, preset circular treatment total degreeNIt is to be not quite similar
's；Meanwhile for same kind of fruits and vegetables, cycle-indexiValue it is different (from the 1st time to theNIt is secondary), theiSecondary gas supply
Time TiAnd theiSecondary processing time Δ TiSize be also to be not quite similar.It is total for the circular treatment of different fruits and vegetables types
NumberNAnd for every kind of fruits and vegetables type any theiSecondary gas supply time TiWith processing time Δ Ti, can pass through
Experiment experience is subject to statistical testing of business cycles, obtains corresponding experience value, is then set by control device, pressed by control device
Treatment process is controlled according to corresponding experience value.
It can be seen that after processing system starts work, using gas supply device, plasma by above-mentioned process
The circular treatment mode that body generating device, accommodating treatment box intermittently starting work realizes that the interruption to accommodating treatment box supplies, and
Accommodating processing box fan be constantly in operating status, in this way processing be because are as follows: pass through gas supply device, plasma generation
The fresh-keeping active gases concentration with higher that device generates, for fruits and vegetables processing, if fruit and vegetable food is located for a long time
Also it is unfavorable for its long-period freshness preserving in the fresh-keeping active gases atmosphere of excessive concentrations, will cause fruits and vegetables damage, and additional increasing instead
The energy consumption and gas consumption for having added system to run；Therefore, it is handled by gas supply device, plasma producing apparatus, accommodating
The circular treatment mode of case intermittently starting work, each circular treatment generate a part of fresh-keeping active gases and are passed through to accommodating processing
Fruits and vegetables are handled in case, and airflow circulating is driven by the fan operation in accommodating treatment box, so that from accommodating treatment box
The fresh-keeping active gases that air inlet enters in accommodating cavity can be distributed to entire accommodating cavity by air-flow dilution rapidly, avoid accommodating cavity
At interior air inlet neighbouring position fresh-keeping active gases it is excessively high and the problem of damage fruits and vegetables, while by the circulation of interruption gas supply at
The mode of reason, so that the fresh-keeping activity gas concentration between accommodating treatment box remains at concentration model effective for preserving fruit and vegetable utilizing
It encloses.But for different fruits and vegetables types, the time span handled before antistaling storing is had differences, therefore
It is directed to different types of fruits and vegetables, preset circular treatment total degreeNIt is not quite similar；Meanwhile different fruits and vegetables types,
The ingredient of its corresponding fresh-keeping active gases, content situation have differences, during processing disappearing for fresh-keeping active gases
Consuming situation, there is also differences, and even same fruits and vegetables are in different processing stages, for the consumption feelings of fresh-keeping active gases
Condition is also to have differences, therefore be directed to different fruits and vegetables types or same kind of fruits and vegetables, cycle-indexiValue it is different (from
1st time toNIt is secondary), theiSecondary gas supply time TiAnd theiSecondary processing time Δ TiSize be also to be not quite similar.This
Outside, by the way of interruption gas supply, so that gas supply device, plasma producing apparatus, accommodating treatment box intermittently starting work
Make, is also beneficial to save the power consumption and gas resource consumption of processing system, is more conducive to save system operation cost.
Furthermore, it is contemplated that in the accommodating external emission for the treatment of box sky may be caused containing ingredients such as ozone, nitrogen oxides
Gas pollution can also add exhaust gas processing device, the outlet of the accommodating treatment box in the processing system for preserving fruit and vegetable utilizing
Channel is connected with the exhaust gas processing device so that from accommodating treatment box be discharged tail gas by exhaust gas processing device processing after
It is externally discharged, to reach gas discharge safety standard.For particular technique is realized, exhaust gas processing device, which can design, to be passed through
Water absorbs, catalyst decomposes, pyrolysis, the filtering modes such as particle, remaining fresh-keeping active material in absorption or decomposed tail gas, thus
Tail gas is set to reach discharge standard.Specific vent gas treatment scheme, can be designed according to the concrete condition of gas componant in tail gas.
In the processing method concrete application implementation process for preserving fruit and vegetable utilizing of the invention, at sterilization fresh-keeping as needed
Manage fruits and vegetables type amount, quantity, can arrange one or more accommodating treatment box, while also can be used one or more etc. from
Daughter generating device, with meet fruits and vegetables sterilization fresh-keeping processing when to fresh-keeping active gases dosage, ingredient difference etc. factors needs,
Control device is then respectively controlled the work of each plasma producing apparatus and accommodating treatment box.
In conclusion the processing method for preserving fruit and vegetable utilizing of the invention, finds shadow in existing preservation technology by research
The principal element for ringing its applicability defect, and takes the counter-measure of face, by using dry nitrogen oxygen mixed gas,
The humidity of nitrogen oxygen mixed gas is controlled in lower range, so that nitrogen oxygen mixed gas is swashed by plasma producing apparatus
Send out the H in the fresh-keeping active gases generated2O2Concentration is dense lower than the hydrogen peroxide that the oxidase system equilibrium response of fruits and vegetables is destroyed
Threshold value is spent, reduces and even avoids because of H2O2Excessive concentration leads to the problem of fruit-vegetable plant Tissue Browning so that processing after fruits and vegetables storage
Hiding fresh keeping time is extended, and is improved the fresh-keeping scope of application to different fruits and vegetables types, is advantageously reduced pushing away for preservation technology
It is wide to use limitation；Also, the present invention also provides the corresponding processing systems for being used for preserving fruit and vegetable utilizing, can not only be to for fruits and vegetables
Fresh-keeping activity gas concentration, the ingredient of sterilization fresh-keeping processing, which are adjusted, to be controlled to meet the fresh-keeping demand of different fruits and vegetables types,
And pass through the optimization design to the processing system for preserving fruit and vegetable utilizing, additionally it is possible to further decrease system building hardware cost,
Later maintenance cost and operation energy consumption preferably ensure sterilization fresh-keeping treatment effect.It can be seen that of the invention protects for fruits and vegetables
Fresh processing method and the processing system for preserving fruit and vegetable utilizing have good marketing application prospect.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to reality
Example is applied to describe the invention in detail, those skilled in the art should understand that, it can be to technical side of the invention
Case is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (12)
1. a kind of processing method for preserving fruit and vegetable utilizing, which is characterized in that pass through plasma using dry nitrogen oxygen mixed gas
The excitation of body generating device generates fresh-keeping active gases, and the fresh-keeping active gases is acted on fruits and vegetables, to fruits and vegetables into
The processing of row sterilization fresh-keeping.
2. being used for the processing method of preserving fruit and vegetable utilizing according to claim 1, which is characterized in that in the fresh-keeping active gases
Effective active composition includes O3、NxOyAt least one of, x, y are the natural number for meeting nitrogen, oxygen element chemical combination relationship.
3. being used for the processing method of preserving fruit and vegetable utilizing according to claim 1, which is characterized in that the nitrogen oxygen atmosphere of the drying
Body is using the nitrogen of drying and the mixed gas of oxygen.
4. being used for the processing method of preserving fruit and vegetable utilizing according to claim 1, which is characterized in that when the nitrogen oxygen of the drying used is mixed
Close nitrogen oxygen volume ratio N in gas2: O2When for 78:22 between 77:23, the nitrogen oxygen mixed gas of the drying is using dry nitrogen
The mixed gas of gas and oxygen, or using dry air.
5. being used for the processing method of preserving fruit and vegetable utilizing according to claim 1, which is characterized in that be used for preserving fruit and vegetable utilizing by building
Processing system be implemented, the processing system for preserving fruit and vegetable utilizing includes that gas supply device, plasma occur
Device, control device and accommodating treatment box；For placing the fruit and vegetable food stored to Preservation Treatment in the accommodating treatment box；
The gas delivery outlet of the gas supply device is connected with the air inlet of plasma producing apparatus, is used for plasma
Generating device supplies dry unstrpped gas, includes nitrogen and oxygen in the unstrpped gas；The plasma producing apparatus
Gas outlet be connected with accommodating treatment box, for exciting nitrogen in dry unstrpped gas and oxygen gas component to generate fresh-keeping work
Property gas, be delivered to accommodating treatment box in；The control device respectively with gas supply device and plasma producing apparatus into
Horizontal electrical signal connection, for controlling the starting and closing of gas supply device and plasma producing apparatus, and for controlling gas
The running parameter of body feeding mechanism or/and plasma producing apparatus, so that gas supply device and plasma fill
Setting being capable of cooperating generation fresh-keeping active gases corresponding with the type of the fruits and vegetables to Preservation Treatment；The processing method includes
Following steps:
1) fruits and vegetables to be processed are put into accommodating treatment box；
2) control starting gas supply device and plasma producing apparatus, so that gas supply device is filled to plasma
The dry nitrogen oxygen mixed gas of input is set, and gas supply device is controlled by control device or/and plasma fills
The running parameter set；
3) fresh-keeping active gases is generated by plasma producing apparatus excitation, is passed through in accommodating treatment box and acts on fruits and vegetables,
To carry out sterilization fresh-keeping processing to fruit.
6. being used for the processing method of preserving fruit and vegetable utilizing according to claim 5, which is characterized in that the gas supply device includes
Oxygenerator, nitrogen making machine and gas supply proportion adjustment unit；The oxygenerator, nitrogen making machine are respectively used to prepare oxygen and nitrogen；It is described
Gas supply proportion adjustment unit is for controlling to adjust the volume ratio that gas supply device externally exports oxygen and nitrogen.
7. being used for the processing method of preserving fruit and vegetable utilizing according to claim 6, which is characterized in that the gas supply device also wraps
Drying device is included, for the unstrpped gas that gas supply device externally exports to be dried.
8. being used for the processing method of preserving fruit and vegetable utilizing according to claim 6, which is characterized in that the work of gas supply device is joined
Number includes the volume ratio of supplied oxygen and nitrogen；
The ratio of nitrogen to oxygen control signal output of the control device and the control signal of gas supply proportion adjustment unit carry out electricity
Signal connection, for controlling signal to gas supply proportion adjustment unit output ratio of nitrogen to oxygen, so that gas supply proportion adjustment unit control
System adjusts it, and externally the volume ratio of supply oxygen and nitrogen is located in the ratio of nitrogen to oxygen threshold range of setting.
9. being used for the processing method of preserving fruit and vegetable utilizing according to claim 5, which is characterized in that gas supply device includes air
Air supply plant, and the gas drier being connected with the air outlet of air air supply plant, the gas of the gas drier
Gas delivery outlet of the body outlet end as gas supply device.
10. being used for the processing method of preserving fruit and vegetable utilizing according to claim 5, which is characterized in that the plasma fills
The running parameter set includes that power occurs for plasma；
The pressure regulation signal output end of the control device and the voltage controling end of plasma producing apparatus carry out electric signal connection,
Power occurs for the plasma for controlling plasma producing apparatus to the operating voltage by adjusting ion generating device.
11. being used for the processing method of preserving fruit and vegetable utilizing according to claim 5, which is characterized in that the accommodating treatment box includes
For placing the accommodating cavity of storage fruit and vegetable food, and the inlet channel and outlet passageway that are connected with the accommodating cavity, in institute
It states and is provided with fan in accommodating cavity, automatically controlled intake valve and automatically controlled outlet are further respectively had on the inlet channel and outlet passageway
Valve；
The valve control signal end of the control device respectively with accommodating treatment box automatically controlled intake valve, automatically controlled air outlet valve and fan
Electric signal connection is carried out, for controlling the opening/closing of the automatically controlled intake valve, automatically controlled air outlet valve and fan, to control plasma
Generating device is passed through the air inflow of fresh-keeping active gases into accommodating treatment box and accommodates the exhaust emissions amount for the treatment of box, and leads to
Passing through fan operating makes to accommodate the gas flowing in treatment box and is uniformly mixed, so that the fresh-keeping activity gas concentration in accommodating treatment box
Within the scope of preset concentration threshold.
12. be used for the processing method of preserving fruit and vegetable utilizing according to claim 11, which is characterized in that described for preserving fruit and vegetable utilizing
The control flow of processing system specifically:
A) fan in accommodating treatment box is opened in control device control；
B) the automatically controlled intake valve and automatically controlled air outlet valve of accommodating treatment box are opened in control device control, are started gas supply device and are waited
Gas ions generating device, and control by control device the work ginseng of gas supply device or/and plasma producing apparatus
Number is made to accommodate so that plasma producing apparatus excitation generates fresh-keeping active gases and is passed through in accommodating treatment box by fan operation
Gas flowing in treatment box is uniformly mixed；
C) the is waitediSecondary gas supply time Ti, then execute the step d)；
D) gas supply device and plasma producing apparatus are closed in control device control, and control the electricity for closing accommodating treatment box
Control intake valve and automatically controlled air outlet valve；
E) the is waitediSecondary processing time Δ Ti, then return and execute the step b)；
F) circulation executes step b) ~ e)NIt is secondary, i.e.,iValue from 1 successively value toN,NIt is complete for preset circular treatment total degree
After processing, the fan in accommodating treatment box is closed in control device control.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111387278A (en) * | 2020-03-12 | 2020-07-10 | 齐鲁工业大学 | Low-temperature plasma fresh-keeping treatment method for fruits and vegetables |
| CN112972723A (en) * | 2021-02-24 | 2021-06-18 | 西安交通大学 | Discharge plasma disinfection device combining nitrogen oxide mode and ozone mode |
| CN113973903A (en) * | 2020-07-27 | 2022-01-28 | 浙江大学 | Method for sterilizing and refreshing fresh mulberry fruits |
| CN115500379A (en) * | 2022-08-31 | 2022-12-23 | 西安交通大学 | Egg surface sterile treatment device and method based on plasma activated gas |
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| CN111387278A (en) * | 2020-03-12 | 2020-07-10 | 齐鲁工业大学 | Low-temperature plasma fresh-keeping treatment method for fruits and vegetables |
| CN113973903A (en) * | 2020-07-27 | 2022-01-28 | 浙江大学 | Method for sterilizing and refreshing fresh mulberry fruits |
| WO2022021628A1 (en) * | 2020-07-27 | 2022-02-03 | 浙江大学 | Method for sterilizing and preserving fresh mulberry fruits |
| CN112972723A (en) * | 2021-02-24 | 2021-06-18 | 西安交通大学 | Discharge plasma disinfection device combining nitrogen oxide mode and ozone mode |
| CN115500379A (en) * | 2022-08-31 | 2022-12-23 | 西安交通大学 | Egg surface sterile treatment device and method based on plasma activated gas |
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