CN111165711A - Low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice - Google Patents
Low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice Download PDFInfo
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- CN111165711A CN111165711A CN202010188683.3A CN202010188683A CN111165711A CN 111165711 A CN111165711 A CN 111165711A CN 202010188683 A CN202010188683 A CN 202010188683A CN 111165711 A CN111165711 A CN 111165711A
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 47
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 47
- 235000011389 fruit/vegetable juice Nutrition 0.000 title claims abstract description 28
- 235000012055 fruits and vegetables Nutrition 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000005465 channeling Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- 239000011344 liquid material Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 2
- 241000405070 Percophidae Species 0.000 claims 1
- 235000021022 fresh fruits Nutrition 0.000 abstract description 14
- 235000015192 vegetable juice Nutrition 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 235000016709 nutrition Nutrition 0.000 description 4
- 239000003205 fragrance Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 210000004666 bacterial spore Anatomy 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/42—Preservation of non-alcoholic beverages
- A23L2/50—Preservation of non-alcoholic beverages by irradiation or electric treatment without heating
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The invention provides a low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice, which comprises a low-temperature plasma reactor component, a pulse intense light reactor component and a material conveying pipeline component; the plasma reactor component is provided with a positive plate and a negative plate, the positive plate is uniformly arrayed with a plurality of emission electrodes, and the positive plate and the negative plate are uniformly distributed with a plurality of small holes, so that the phenomena of turbulence, channeling, wall flow, laminar flow and the like of the freshly squeezed fruit and vegetable juice in the low-temperature plasma generator are avoided, and the freshly squeezed fruit and vegetable juice is ensured to be uniformly subjected to the action of low-temperature plasma; a plurality of pulse floodlights are uniformly arrayed around the inner wall of the pulse floodlight reactor; the material conveying pipeline assembly comprises an inlet, an outlet and a valve of the material, an inlet, an outlet and a valve of the gas and a duckbill-shaped film distributor. The invention realizes the quick and continuous sterilization of the fresh fruit and vegetable juice at normal temperature and normal pressure, has the advantages of green and pollution-free whole process, energy conservation and environmental protection, and has good economic benefit and popularization value.
Description
Technical Field
The invention belongs to the field of non-thermal sterilization of foods, and particularly relates to a continuous low-temperature plasma-pulse high-light sterilization reactor for freshly squeezed fruit and vegetable juice.
Background
The fresh fruit and vegetable juice is rich in nutrition, delicious in taste and popular with consumers. The fresh fruit and vegetable juice belongs to a thermosensitive raw material, aromatic substances of the fresh fruit and vegetable juice are decomposed by a traditional thermal processing technology to lose the natural flavor of natural fruits and vegetables, and the freshness and the quality of the fresh fruit and vegetable juice are greatly influenced. How to maintain the original color, fragrance, taste and functional components to the maximum extent in the processing process of the fresh fruit and vegetable juice is a hot point and a difficult point of current research. The processing of the fruit and vegetable juice by using a non-thermal processing technology can quickly kill harmful microorganisms in the fruit and vegetable juice, the energy consumption in the processing process is low, the time is short, and the original freshness and nutritional functional components can be maintained to the maximum extent.
The non-thermal sterilization technology for fruit and vegetable juice at home and abroad is ultrahigh pressure sterilization, high density sterilization, pulsed electric field sterilization, pulsed magnetic field sterilization, low-temperature plasma sterilization, pulsed high-light sterilization and the like, which are obtained through literature retrieval. The basic principle of low-temperature plasma sterilization is that various excited particles and high-energy electrons, such as active free radicals (-OH, O), are formed in the discharge process2-，H2O2，O3Etc.), which can destroy the structure of harmful microbe, lead to irreversible damage such as thallus rupture, content overflow, electrolyte collapse, etc., influence the growth and metabolism of the microbe, and can destroy the DNA structure in the cell to make the microbe lose the reproduction and self-replication ability, thereby achieving the killing effect. The strong pulse light sterilization uses alternating current as a power supply to provide energy for an inert gas lamp to generate strong pulse light flash, the spectrum of the strong pulse light flash is similar to the spectrum of the sun but is thousands of times stronger than the spectrum of the sun, the sterilization time is short, and the treatment process is normal temperature and normal pressure. Most of the sterilization technologies are intermittent sterilization and single sterilization, and the sterilization technologies are difficult to inactivate bacterial spores and enzymes with strong vitality, so that the safety risk of incomplete sterilization exists. The invention develops and designs a reactor for combined sterilization of low-temperature plasma and intensive pulse light of fresh fruit and vegetable juice, can make up for the defects of a single sterilization technology, realizes continuous sterilization, has normal temperature and normal pressure in the whole sterilization process, and is easy to realize industrial production.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a continuous low-temperature plasma-pulsed high-light sterilization reactor for freshly squeezed fruit and vegetable juice, the reactor can continuously feed and discharge materials, harmful microorganisms in thermosensitive freshly squeezed fruit and vegetable juice can be rapidly and thoroughly killed, and the sterilized freshly squeezed fruit and vegetable juice keeps the original color, fragrance, taste and nutritional ingredients.
In order to solve the technical problems, the technical scheme adopted by the invention comprises the following steps:
a continuous low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice comprises a low-temperature plasma reactor component, a pulse intense light reactor component and a material conveying pipeline component; the plasma reactor component is provided with an anode plate and a cathode plate, and the anode plate is uniformly provided with a plurality of emission electrodes; a plurality of pulse floodlights are uniformly arrayed around the inner wall of the pulse floodlight reactor; the port of the material conveying pipeline in the pulse intense light reactor is provided with a duckbilled film distributor.
In the technical scheme of the invention, the invention also has the following additional technical characteristics:
furthermore, the wall material of the low-temperature plasma generator is transparent white glass, so that real-time observation in the low-temperature plasma discharge working process is realized.
Furthermore, a material inlet and a gas inlet are arranged at the bottom of the low-temperature plasma generator, and the material feeding amount and the gas inflow amount are adjusted through a valve; the positive plate of the low-temperature plasma generator is connected to the positive pole of a power supply through a binding post, and the negative plate is connected to the negative pole of the power supply through the binding post, so that discharge is generated between the positive plate and the negative plate; the low-temperature plasma positive plate is uniformly provided with a plurality of electrodes, so that uniform discharge in the low-temperature plasma reaction cavity is ensured.
Furthermore, a plurality of small holes are uniformly distributed on the negative plate and the positive plate of the low-temperature plasma generator, so that the phenomena of turbulence, channeling, wall flow, laminar flow and the like of the freshly squeezed fruit and vegetable juice in the low-temperature plasma generator are avoided, and the freshly squeezed fruit and vegetable juice is ensured to uniformly receive the action of the low-temperature plasma; the top of the plasma generator is only provided with an outlet for mixing materials and gas, so that the full action of active ions and the materials generated in the plasma generator is ensured; and the outlet of the low-temperature plasma generator is connected with a pulse intense light generator.
Furthermore, the wall material of the intensive pulse light generator is transparent white glass, so that real-time observation in the plasma discharge working process is realized; the pulse intense light generator is provided with a material inlet, a material outlet, a gas outlet and a baffle; the inner wall of the pulse high-intensity light generator is uniformly provided with a plurality of pulse high-intensity lights, and the pulse high-intensity lights are fixed on the inner wall through a fixing device.
Preferably, the material import of pulse intense light generator is supporting to be equipped with duckbilled type membrane distributor for the fresh fruit vegetables juice of squeezing forms the liquid film, evenly passes through pulse intense light cavity, accepts the effect of pulse intense light, improves the sterilization efficiency of pulse intense light, makes the gaseous complete release of mixing with liquid material simultaneously.
Preferably, the upper part of the pulse intense light generator is provided with a baffle plate, and a plurality of small holes are uniformly formed in the baffle plate to prevent gas carrying liquid from being discharged together; the bottom of the pulse strong light generator is a conical body, so that the materials are completely discharged after the equipment is shut down.
The working principle of the invention is as follows: opening a material inlet and a gas inlet of the low-temperature plasma generator, uniformly mixing the material and the gas, and then uniformly entering the cavity space of the low-temperature plasma generator to receive the action of the low-temperature plasma; adjusting the feeding amount of the material to ensure that the material and high-energy particles and active free radicals (-OH, O) generated by the isothermal plasma2-，H2O2，O3Etc.) function adequately; after the low-temperature plasma sterilization is finished, the materials are connected through a material pipe and enter a pulse strong light generator; the material forms liquid film through duckbilled type film distributor, under the effect of gravity, falls into the conical body bottom in the parabola form, accomplishes the separation of gas and material simultaneously, and gas passes through the baffle aperture and discharges from pulse intense light reactor top, and the material is discharged from its bottom pipeline, accomplishes the sterilization of freshly squeezed fruit vegetables juice.
The invention has the advantages and positive effects that: two non-thermal sterilization devices of low-temperature plasma and intensive pulse light are connected in series to realize continuous non-thermal sterilization of the freshly squeezed fruit and vegetable juice of the thermosensitive material, the sterilization process is normal temperature and normal pressure, and the sterilization device is green and pollution-free and can keep the original color, fragrance, taste and nutritional ingredients of the freshly squeezed fruit and vegetable juice.
Drawings
FIG. 1 is a schematic structural diagram of a continuous low-temperature plasma-pulsed high-light sterilization reactor for freshly squeezed fruit and vegetable juice according to the present invention.
Fig. 2 is a schematic structural view of a positive plate in the low-temperature plasma reactor of the present invention.
Fig. 3 is a schematic structural view of a negative plate in the low-temperature plasma reactor of the present invention.
Fig. 4 is a schematic structural diagram of a duckbilled film distributor in the pulsed strong light sterilization reactor of the present invention.
FIG. 5 is a schematic diagram of the structure of the light source distribution in the strong light pulse sterilization reactor of the present invention.
FIG. 6 is a schematic diagram of a baffle structure in the strong pulse light sterilization reactor of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a continuous low-temperature plasma-pulse high-light sterilization reactor for freshly squeezed fruit and vegetable juice, which is shown in a figure 1 and comprises a material conveying pipeline inlet 1, an inlet valve 2, a low-temperature plasma reactor shell 3, a negative plate power terminal 4, a low-temperature plasma negative plate 5, a low-temperature plasma positive plate 6, a positive plate terminal 7, a pipeline 8 for connecting the low-temperature plasma reactor and a pulse high-light reactor, a duckbilled film distributor 9, an exhaust pipe 10, an exhaust pipe valve 11, a baffle plate 12, pulse high-light lamps 13/14, a pulse high-light lamp fixing device 15, a pulse high-light reactor shell 16, a discharge valve 17 and a discharge port 18.
As shown in fig. 1, the continuous low-temperature plasma-pulse high-light sterilization reactor for freshly squeezed fruit and vegetable juice comprises a low-temperature plasma reactor component, a pulse high-light reactor component and a pipeline component. The low-temperature plasma reactor component comprises a low-temperature plasma reactor shell 4, a negative plate 5, an anode plate 6 and power supply wiring terminals 4 and 7; the pulse high-intensity light reactor assembly comprises a baffle 12, pulse high- intensity lights 13 and 14, a pulse high-intensity light fixing device 15 and a pulse high-intensity light reactor shell 16; the pipeline assembly comprises an inlet 1 of a plasma reactor material, a material inlet valve 2, a gas inlet 20, a gas inlet valve 19, a connecting pipeline 8 of the plasma reactor and the pulse intense-light reactor, a duckbill-shaped film distributor 9, a pulse intense-light reactor material outlet 18, a material outlet valve 17, an exhaust port 10 and an exhaust port valve 11.
Fig. 2 is a schematic structural diagram of the positive plate 6 in the low-temperature plasma reactor of the present invention, and the reference numerals indicate the following, wherein a plurality of electrodes 21 and small holes 22 of fresh fruit and vegetable juice channels are distributed on the positive plate 6 of the low-temperature plasma reactor in an array manner.
Fig. 3 is a schematic structural diagram of a negative plate 5 in the low-temperature plasma reactor of the present invention, and reference numerals indicate that a plurality of small holes 23 for fresh fruit and vegetable juice channels are distributed in an array on the negative plate 5 of the low-temperature plasma reactor, so as to prevent the fresh fruit and vegetable juice from generating turbulence, channeling, wall flow, laminar flow, etc. in the low-temperature plasma generator, and ensure that the fresh fruit and vegetable juice uniformly receives the effect of the low-temperature plasma;
fig. 4 is a schematic structural diagram of a duckbilled film distributor 9 in the pulsed strong light sterilization reactor of the present invention, and reference numerals indicate that in the duckbilled film distributor 9, a port 25 is connected to a fresh fruit and vegetable juice squeezing pipeline 8, and a port 24 of the film distributor distributes the fresh fruit and vegetable juice into films, which fall in a parabola shape under the action of gravity and receive the action of pulsed strong light 13, 14.
Fig. 5 is a schematic structural diagram of the distribution of the light sources 13 and 14 in the pulse highlight sterilization reactor of the present invention, wherein the reference numerals indicate that a plurality of pulse highlight lamps are uniformly arrayed on the inner wall of the pulse highlight reactor shell 16, and the pulse highlight lamps are fixed on the inner wall of the shell 16 through the fixing device 15.
Fig. 6 is a schematic structural diagram of a baffle 12 in the pulse high light sterilization reactor of the present invention, and the reference numerals indicate that a plurality of small holes 26 are uniformly distributed on the baffle 12 to prevent the freshly squeezed fruit and vegetable juice from being discharged along with the gas.
The technical scheme and the working method adopted for solving the technical problems are as follows: opening the material inlet valve 2 and the gas inlet valve 19 of the low-temperature plasma generator, mixing the materials and the gas, uniformly entering the cavity space of the low-temperature plasma generator through the small holes 23 on the negative plate 5, and receiving the action of the low-temperature plasma; adjusting the feeding amount of the material to ensure that the material and high-energy particles and active free radicals (-OH, O) generated by the isothermal plasma2-，H2O2，O3Etc.) function adequately; after the low-temperature plasma sterilization is finished, the materials are connected through a material pipe 8 and enter a pulse strong light generator; the material forms a liquid film through the duckbilled film distributor 9, falls into the bottom of the conical body in a parabola shape under the action of gravity, and simultaneously completes the separation of gas and the material, the gas is discharged from the exhaust port 10 at the top of the pulse intense light reactor through the small holes 26 of the baffle plate 12, and the material is discharged from the discharge port 18 of the bottom pipeline, thus completing the sterilization of the freshly squeezed fruit and vegetable juice.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and it should be noted that any equivalent substitution, obvious modification made by those skilled in the art under the teaching of the present specification are within the spirit scope of the present specification, and the present invention should be protected.
Claims (7)
1. A low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice is characterized by comprising a low-temperature plasma reactor component, a pulse intense light reactor component and a material conveying pipeline component; the plasma reactor component is provided with a positive plate and a negative plate, and the positive plate is uniformly provided with a plurality of emission electrodes; a plurality of pulse floodlights are uniformly arrayed around the inner wall of the pulse floodlight reactor; the port of the material conveying pipeline in the pulse intense light reactor is provided with a duckbilled film distributor.
2. The low-temperature plasma generator according to claim 1, wherein the wall material is transparent white glass, so that real-time observation during the low-temperature plasma discharge operation is realized.
3. The low-temperature plasma generator according to claim 1, wherein the positive plate is connected to a positive electrode of a power supply through a terminal, the negative plate is connected to a negative electrode of the power supply through the terminal, and discharge is generated between the positive plate and the negative plate; the low-temperature plasma positive plate is uniformly provided with a plurality of electrodes, so that uniform discharge in the low-temperature plasma reaction cavity is ensured.
4. The low-temperature plasma generator as claimed in claim 1, wherein the negative plate and the positive plate are uniformly provided with a plurality of small holes, so as to prevent the freshly squeezed fruit and vegetable juice from generating turbulence, channeling, wall flow, laminar flow and the like in the low-temperature plasma generator, and ensure that the freshly squeezed fruit and vegetable juice uniformly receives the effect of the low-temperature plasma; the top of the plasma generator is only provided with an outlet for mixing materials and gas, so that the full action of active ions and the materials generated in the plasma generator is ensured.
5. The pulsed intense light generator according to claim 1, wherein the wall material is transparent white glass, which realizes real-time observation during plasma discharge operation; the pulse intense light generator is provided with a material inlet, a material outlet, a gas outlet and a baffle; the inner wall of the pulse high-intensity light generator is uniformly provided with a plurality of pulse high-intensity lights, and the pulse high-intensity lights are fixed on the inner wall through a fixing device.
6. The pulsed intense light generator according to claim 1 and 5, characterized in that the material inlet is equipped with a duckbill membrane distributor, so that the freshly squeezed fruit and vegetable juice forms a liquid film, and uniformly passes through the pulsed intense light cavity to receive the action of the pulsed intense light, so as to improve the sterilization efficiency of the pulsed intense light, and simultaneously, the gas mixed with the liquid material is completely released, so as to realize gas-liquid separation.
7. A pulsed intense light generator according to claims 1 and 5, characterized in that the upper part is provided with a baffle plate, a plurality of small holes are uniformly arranged on the baffle plate, and the prevention gas and the liquid carried by the prevention gas are discharged together; the bottom of the pulse strong light generator is a conical body, so that no liquid is accumulated after the equipment is shut down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010188683.3A CN111165711A (en) | 2020-03-17 | 2020-03-17 | Low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010188683.3A CN111165711A (en) | 2020-03-17 | 2020-03-17 | Low-temperature plasma-pulse intense light sterilization reactor for freshly squeezed fruit and vegetable juice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712174A (en) * | 2020-05-26 | 2021-11-30 | 开原川顺食品加工有限公司 | Blueberry jam preparation method based on high-voltage pulse electric field sterilization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905380A (en) * | 2015-04-08 | 2015-09-16 | 杭州聚电科技有限公司 | Sterilization device based on combination of intensive pulse light and water film |
| CN206586275U (en) * | 2017-01-13 | 2017-10-27 | 青岛农业大学 | A kind of fresh-cut fruit and vegetable tunnel continuous plasma sterilizing unit |
| CN208925152U (en) * | 2017-12-29 | 2019-06-04 | 西北农林科技大学 | A kind of membranaceous cold sterilizing unit of serialization low temperature plasma for fruit juice |
-
2020
- 2020-03-17 CN CN202010188683.3A patent/CN111165711A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905380A (en) * | 2015-04-08 | 2015-09-16 | 杭州聚电科技有限公司 | Sterilization device based on combination of intensive pulse light and water film |
| CN206586275U (en) * | 2017-01-13 | 2017-10-27 | 青岛农业大学 | A kind of fresh-cut fruit and vegetable tunnel continuous plasma sterilizing unit |
| CN208925152U (en) * | 2017-12-29 | 2019-06-04 | 西北农林科技大学 | A kind of membranaceous cold sterilizing unit of serialization low temperature plasma for fruit juice |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712174A (en) * | 2020-05-26 | 2021-11-30 | 开原川顺食品加工有限公司 | Blueberry jam preparation method based on high-voltage pulse electric field sterilization |
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Application publication date: 20200519 |