KR20160106920A - Plasma Treatment Process For Processed-Meat and Plasma Treatment Apparatus For Processed-Meat - Google Patents

Abstract

The present invention relates to a meat product plasma treatment apparatus and a meat product manufacturing method. This meat product plasma treatment apparatus includes: a main chamber accommodating a meat product and providing a sealed space; a plasma chamber connected to the main chamber; a plasma generating unit disposed in the plasma chamber, generating active gas containing nitrogen oxide gas by using atmospheric pressure dielectric barrier discharge plasma of mixed gas of oxygen and nitrogen, and providing the active gas for the main chamber; and an active gas circulation unit provided with the active gas in the main chamber and supplying the active gas back to the plasma chamber. This meat product is exposed directly to the active gas and is subjected to curing treatment or sterilization treatment by the active gas.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma processing method and a plasma processing apparatus,

The present invention relates to a plasma treatment method and a plasma apparatus for producing nitrite (NO ₂ ) gas by using plasma and directly exposing it to meat products, and more particularly to a plasma treatment method and plasma apparatus for producing nitrite The present invention relates to a plasma treatment method for producing nitrite (N ₂ ) and oxygen (O ₂ ) in the air by generating a nitrite gas through plasma discharge to sterilize or dirt the meat products directly to produce sodium nitrite- will be

The demand for foods that are safe and nutritious and sensual are steadily increasing. One of the consumer trends of modern consumers is naturalism. To satisfy this, the food processing industry is reducing the use of chemical synthetic food additives. Various studies are underway to develop natural additives that can replace chemical synthetic food additives.

Sodium nitrite (NaNO2), which is used in the curing process in the meat processing food industry, is an essential additive because of various activities depending on the supply of nitrite ions (NO2) in sausage, ham, and bacon. The nitrite ion (NO2-) in the poultry meat product is the first preservative, which inhibits the proliferation of various aerobic and anaerobic microorganisms, in particular, inactivates Clostridium botulinum, and is also inactivated by long- (Staphylococcus aureus and Clostridium perfringens) which cause the production of toxic substances and the decay of the toxic substances, and can inhibit the proliferation of Bacillus cereus, Staphylococcus aureus and Clostridium perfringens. In addition, nitrite ion (NO2-) is an antioxidant, which inhibits fatty acid rancidity that occurs during the production of dough meat processing products, thereby reducing the occurrence of acid patches. Myoglobin in meat binds with nitrogen monoxide to produce nitrosylmyoglobin, which is involved in the expression of pancreatic color. Nitrite ion (NO2-) is involved in the expression of unique and attractive flavors of poultry meat products due to nitrogen-containing volatile components. Therefore, nitrite ion is an indispensable substance in the manufacture of poultry meat products, and it is used worldwide.

However, in the case of chemical synthetic nitrite (NaNO2 or KNO2), which is generally used for the supply of nitrite ions, due to the increase of sodium in the raw meat products and the chemical synthesis additive due to the use of synthetic nitrite, There is an increasing tendency to avoid products. Therefore, it is urgent to develop a natural additive capable of replacing synthetic nitrite for the continuous development of the meat processing industry to meet consumer demands.

Chemically synthesized nitrite is the most widely used method for the production of natural bamboo meat products. The nitrate ion (NO3-) obtained by inoculating a plant extract containing nitrate and reducing nitrate ion (NO3-) (NO2 < - >). Currently, this method is used in various countries as well as domestic. Especially, celery extract is added as a no-additives product with synthetic additives added. Consumer preference for these products is also on the rise. However, costs have been added to extraction processes for the production of natural plant extracts containing nitrates, and to seeds and reduction processes for reducing them to nitrite ions. As a result, it is inevitable to increase the production cost of meat products containing natural plant extracts. In addition, since the production process and reduction technology of natural plant extracts satisfying the content of the nitrite ion required in the production of the durable meat products are not secured in Korea, most of the plant extracts and seeds used in the domestic industry depend on imports . Therefore, it is necessary to reduce the cost of production of poultry meat products, and to develop the domestic technology capable of effectively replacing nitrite, thereby securing the development and economical efficiency of the domestic meat processing food industry.

Korean Patent No. 1229379 discloses a method for producing a meat product having color fixation and flavor using a vegetable powder containing nitrate and nitrate reducing bacteria without adding synthetic sodium nitrite. Korean Patent Laid-Open Publication No. 2013-0136051 discloses a method for producing a meat product in which dry ice is added during meat processing to maintain the freshness by inhibiting lipid oxidation without adding nitrate or nitrite. However, the present invention does not disclose a plasma processing apparatus and a process for directly processing meat products using plasma instead of the synthetic nitrite.

It is an object of the present invention to provide a plasma dwelling method and an effective plasma dwelling equipment for producing a meat product having a color fixation effect and a good flavor by absorbing nitrite ions into a meat product without adding sodium nitrite.

Another object of the present invention is to provide a sterilization process for meat products using nitrite gas (nitrogen dioxide gas).

According to an embodiment of the present invention, there is provided a meat product plasma processing apparatus comprising: a main chamber accommodating a meat product and providing an enclosed space; A plasma chamber connected to the main chamber; A plasma generating unit disposed in the plasma chamber and generating an active gas containing nitrogen oxide gas using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the active gas to the main chamber; And an active gas circulation unit for receiving the active gas inside the main chamber and supplying the activated gas back to the plasma chamber. The meat product is directly exposed to the active gas and treated with the active gas.

In one embodiment of the present invention, the main chamber may include a rotating shaft and blades attached to the rotating shaft for mixing the meat product.

According to an embodiment of the present invention, the rotation axis is a pipe shape having an axial through-hole, the rotation axis includes a plurality of nozzles connected to the through-hole, .

In one embodiment of the present invention, the active gas circulation unit includes an ozone filter connected to the main chamber to remove ozone; A gas sensing unit connected to a downstream end of the ozone filter to measure a concentration of the nitrite gas; And a compressor coupled to a downstream end of the gas sensing portion, the compressor being capable of providing the active gas to the plasma chamber.

In an embodiment of the present invention, the plasma generating unit may include a plurality of dielectric barrier discharge modules spaced apart from each other and extending in parallel.

In one embodiment of the present invention, the dielectric barrier discharge module includes a first dielectric barrier discharge plate extending in a first direction in a layout plane defined by a first direction and a second direction; A second dielectric barrier discharge plate spaced apart in a third direction perpendicular to the arrangement plane and extending in the first direction; And a pair of spacers disposed at both ends of the first dielectric barrier discharge plate and the second dielectric barrier discharge plate and maintaining a predetermined distance therebetween. Wherein the first dielectric barrier discharge plate and the second dielectric barrier discharge plate are disposed such that first plasma electrodes of the same shape are respectively disposed on opposite surfaces of the first dielectric barrier discharge plate and the second dielectric barrier discharge plate, A second plasma electrode of the same shape may be disposed on a plane, and the second plasma electrode may be disposed apart from the second plasma electrode in a second direction.

In an embodiment of the present invention, the plasma generating portion includes a conductive supporting block supporting the spacer and extending in the third direction; A pair of side insulating plates disposed at the outermost sides of the plurality of dielectric barrier discharge modules and extending in the first direction; And an insulating cover disposed to surround the conductive supporting block and extending in the third direction.

In one embodiment of the present invention, the plasma generating portion includes: a plurality of first dielectric barrier discharge rods extending in a first direction and arranged at regular intervals and coated with an insulator; A plurality of second dielectric barrier discharge rods disposed between adjacent pairs of first dielectric barrier rods and extending in a first direction; A left conductive support block that fixes one end of the first dielectric barrier discharge rods and is disposed on the left side of the first dielectric barrier discharge rod and extends in a third direction; And a right conductive support block that fixes one end of the second dielectric barrier discharge rods and is disposed to the right of the second dielectric barrier discharge rod and extends in a third direction.

In one embodiment of the present invention, a side insulating plate disposed at an outermost portion of the first dielectric barrier discharge barriers in a third direction; A left side insulating cover arranged to surround the left conductive supporting block; And a right insulation cover arranged to surround the right conductive support block.

In an embodiment of the present invention, the plasma chamber and the main chamber are spaced apart from each other, and the plasma generating unit may form a remote plasma and provide the active gas to the main chamber have.

In one embodiment of the present invention, the main chamber may further include transport means for transporting the meat product.

In one embodiment of the present invention, the apparatus may further include a gas distributor disposed in the plasma chamber and distributing the supplied gas to the plasma generator. The gas distribution portion includes a gas distribution plate having a multi-layered structure disposed spaced apart from each other, and the gas distribution plate includes a plurality of through holes, and the active gas can be supplied to the plasma generation portion through the through holes .

In one embodiment of the present invention, the main chamber may be rotated for mixing and massaging of the meat products.

In one embodiment of the present invention, the main chamber may include a spatula disposed on an inner wall of the main chamber. The meat product can be mixed and massaged by moving up and down the meat product by the rotation of the main chamber.

According to an embodiment of the present invention, there is provided a method of manufacturing a meat product, comprising: performing an atmospheric pressure plasma discharge using a mixed gas of nitrogen and oxygen to produce an active gas containing nitrogen oxide gas; And directing the active gas to the meat product, wherein the meat product directly exposed to the nitrogen oxide gas produces nitrite ions.

In one embodiment of the present invention, the step of providing the active gas directly to the meat product may be performed during the mixing process of the meat product.

In one embodiment of the present invention, the plasma chamber for performing the plasma discharge and the main chamber for housing the meat product may be integrally formed with each other.

In one embodiment of the present invention, the plasma chamber for performing the atmospheric-pressure plasma discharge and the main chamber for accommodating the meat products are spatially separated from each other, and the plasma chamber is provided with the active gas formed through the atmospheric- Can be provided to the main chamber.

In one embodiment of the present invention, the method may further include an active gas circulation step of receiving the active gas exposed to the meat product, removing ozone from the active gas, and performing plasma discharge again.

In one embodiment of the present invention, the plasma discharge is an atmospheric pressure dielectric barrier discharge, the power density of the dielectric barrier discharge is greater than or equal to 10 W / cm ² to suppress ozone generation, Lt; RTI ID = 0.0 > kHz < / RTI >

In one embodiment of the present invention, the step of directly supplying the active gas to the meat product may be performed in a mixer or a vacuum tumbler for mixing the meat product.

A meat product according to an embodiment of the present invention is processed by the meat product manufacturing method according to any one of claims 15 to 20.

The meat products prepared by the method of the present invention can be preserved without addition of synthetic sodium nitrite and there is no significant difference in the performance and sensory evaluation as compared with the meat products containing the existing synthetic sodium nitrite, Can replace the conventional chemically synthesized sodium nitrite.

 The present invention can reduce cost by replacing natural additives used in sodium nitrite-free products and enhance product competitiveness through plasma sterilization effect.

FIG. 1A is a conceptual diagram illustrating a meat product plasma processing apparatus according to an embodiment of the present invention. FIG.
Fig. 1B is a perspective view showing the meat product plasma treatment apparatus of Fig. 1A.
1C is a cut-away perspective view of the meat product plasma treatment apparatus of FIG. 1B.
FIG. 1D is a perspective view illustrating a plasma generating portion of the meat product processing apparatus of FIG. 1B. FIG.
Fig. 1E is a perspective view showing a plasma generating portion and a gas distributing portion of the meat product processing apparatus of Fig. 1B.
1F is an exploded perspective view of the plasma generating portion of the meat product processing apparatus of FIG. 1B.
FIG. 1G is a circuit diagram showing the electrical connection of the plasma generating portion of the meat product processing apparatus of FIG. 1F.
FIGS. 2A to 2C are cross-sectional views taken along lines I-I ', II-II', and III-III ', respectively, of FIG. 1F.
3A, 3B and 3C are a plan view, a rear view, and a sectional view of a dielectric barrier discharge plate.
4A and 4B are perspective views illustrating a plasma generator according to another embodiment of the present invention.
5 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.
6 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.
7 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.
8 and 9 are conceptual diagrams illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.

In recent years, atmospheric (atmospheric) plasmas have very different characteristics depending on various electrode structures, driving frequencies and conditions. Atmospheric (atmospheric) plasma has many advantages such as high temperature and low temperature treatment, high active species density, and fast processing time. The applications of atmospheric (atmospheric) plasma are very diverse. Particularly, since dry processing using species having strong oxidizing power or high reactivity is possible, researches are actively conducted in the biological / medical field and the food industry such as food sterilization, biofilm removal and organic film removal.

Conventionally, an application has been introduced that uses distilled water or a solution treated with plasma for a pre-treatment process, as opposed to a wastewater treatment using plasma and a post-treatment such as COD, BOD reduction, decolorization and deodorization. In the case of distilled water treated with plasma, it has been reported that it is called plasma treated water and has a good sterilizing power to replace its role as sterilized water instead of ozonated water.

The so-called 'plasma treated water' can be generated by directly or indirectly exposing the atmospheric plasma to distilled water. Atmospheric plasma is discharged by various discharge gases such as helium, argon and nitrogen, but the chemical species contained in the plasma treatment water to be produced are determined by the discharge gas. For example, highly germicidal ozone or reactive species can be produced by using a gas mixture of oxygen, oxygen, and other gases in a discharge vessel.

Also, it is necessary to understand the chemical species existing in the plasma-treated water because they exist in the plasma-treated water. Synthetic nitrite, which is essential for the manufacture of meat products, can be replaced by plasma-treated water. In this case, nitrite ions (NO ₂ ^- ) and nitrate ions (NO ₃ ^- ) contained in plasma-treated water are important. However, since the concentration of the nitrite ions is decreased with the settling time, it is difficult to industrially use the plasma treated water.

On the other hand, when processing meat using nitrite ions and nitrate ions (NO ₃ ^- ) contained in plasma-treated water, permission from the Food and Drug Administration (FDA) is required for new food processing. The licensing of these new processes requires time and effort. It is difficult to apply the purging process using plasma treated water practically.

Thus, there is a need for a new substrate process to replace the nitrite ion-containing plasma treated water or the conventional sodium nitrite.

When a plasma is generated using a mixed gas of oxygen and nitrogen at atmospheric pressure, a nitrification oxide gas and an ozone gas are generated, and ozone gas is unnecessary for the dying process. There is a demand for a plasma apparatus that suppresses the generation of ozone gas or removes generated ozone gas.

According to the plasma processing method according to an embodiment of the present invention, even when the nitrification oxide gas generated by the atmospheric pressure plasma is directly exposed to meat products, the nitrite ion (NO ₂ ^- ) and the nitrate ion (Nitrate ion, NO ₃ ^- ) was produced. Further, when power of 30 kHz or more and power of a predetermined power density or more are supplied, the generation of ozone gas in the dielectric barrier discharge can be suppressed. In addition, an ozone gas filter and a gas circulation structure may be adopted to remove the generated ozone gas and to maintain the nitrite gas at a predetermined concentration or more. The atmospheric plasma or atmospheric pressure dielectric discharge includes 760 torr and a low vacuum state (below 100 torr) below atmospheric pressure. In addition, the nitrite gas (nitrogen dioxide gas) can be used in the sterilization process of meat products.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned needs, and it is an object of the present invention to produce nitrite ions through plasma treatment in a meat product without adding synthetic nitrite. Another object of the present invention is to provide a sterilization process for meat products using nitrite gas (nitrogen dioxide gas).

Plasma blanket treatment can produce nitrogen oxide gas by using a dielectric barrier discharge plasma of a mixture gas of nitrogen and oxygen, and expose the nitrogen oxide gas directly to meat products, thereby producing nitrite ions in meat products. As a result, the nitrite ion exhibits a color fixation effect and flavor, so that a meat product having excellent taste can be produced. In addition, the nitrogen oxide gas can sterilize meat products.

Historically, it has been understood that salt is added for the purpose of storing meat, but it is understood that the meaning of salt is added with time, and salt, sugar, nitrate or nitrite is added to meat. In modern times, , Ascorbic acid, a phosphate, a binder, a filler, and various flavor enhancers. According to one embodiment of the present invention, according to the plasma salt treatment, nitrite ions are produced in the meat product.

The sieving process is a process in which raw meat is uniformly cut and mixed. The mixing process is a process in which the raw raw meat is homogeneously mixed with the ingredients such as spices and seasonings.

Typically, the raw materials to be added in the step of dipping the meat products for the manufacture of meat products use nitrite or nitrate as a preservative. The meat products are mixed using a mixer, and the mixer usually agitates the meat product using a wing attached to a shaft. According to one embodiment of the present invention, a plasma generator is mounted on a conventional mixer. Accordingly, the plasma treatment process of the plasma generating apparatus can produce a nitrite ion (NO 2 -) and a nitrate ion (NO 3 -) in the meat product at the same time as the stirring, thereby replacing the synthetic nitrite addition process. In addition, the plasma treatment process can replace the sterilization process of meat products.

According to one embodiment of the present invention, in a bare soil stage of meat drought, a meat product is preserved by using nitrogen oxide gas produced by a plasma using a mixed gas of nitrogen and oxygen without adding synthetic nitrite. At the same time as performing the plasma-dwelling process, a mixing process using the mixer can be performed simultaneously. In the mixing step, water and a flavor enhancer are added.

In the case of using air in the atmosphere as a discharge vessel or discharging using a mixed gas of nitrogen and oxygen, the plasma generates nitrogen oxides and ozone. Nitrogen oxides and related active species generated from the plasma are dissolved in the agitated meat product containing water to generate OH radicals, ozone, nitrite (KNO 2 or NaNO 2) and nitrate (KNO 3 or NaNO 3). Nitrite (HNO2) and nitric acid (HNO3) are produced through the following chemical equations. In order to efficiently absorb the nitrogen oxides into the meat product, the plasma dying process may be performed simultaneously with the mixing process in the mixer performing the mixing process.

[Reaction Scheme 1]

_{2NO (g) + O 2 (} g) → 2NO 2 (g)

[Reaction Scheme 2]

NO + NO ₂ + H ₂ 0? 2NO ₂ ^- + 2H ⁺

[Reaction Scheme 3]

2NO ₂ + H ₂ O → NO ₂ ^- + NO ₃ ^- + 2H ⁺

[Reaction Scheme 4]

_{3NO 2 (g) + H 2} 0 (l) → 2HNO 3 (aq) + NO (g)

[Reaction Scheme 5]

4NO ₂ (g) + O ₂ (g) H _{2 O (1)} ? 4HNO ₃ (aq)

[Reaction Scheme 6]

_{NO + OH + M → HNO 2} + M

[Reaction Scheme 7]

NO ₂ + OH + M - > HNO ₃ + M

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are being provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the components have been exaggerated for clarity. Like numbers refer to like elements throughout the specification.

FIG. 1A is a conceptual diagram illustrating a meat product plasma processing apparatus according to an embodiment of the present invention. FIG.

Fig. 1B is a perspective view showing the meat product plasma treatment apparatus of Fig. 1A.

1C is a cut-away perspective view of the meat product plasma treatment apparatus of FIG. 1B.

FIG. 1D is a perspective view illustrating a plasma generating portion of the meat product processing apparatus of FIG. 1B. FIG.

Fig. 1E is a perspective view showing a plasma generating portion and a gas distributing portion of the meat product processing apparatus of Fig. 1B.

1F is an exploded perspective view of the plasma generating portion of the meat product processing apparatus of FIG. 1B.

FIG. 1G is a circuit diagram showing the electrical connection of the plasma generating portion of the meat product processing apparatus of FIG. 1F.

FIGS. 2A to 2C are cross-sectional views taken along lines I-I ', II-II', and III-III ', respectively, of FIG. 1F.

3A, 3B and 3C are a plan view, a rear view, and a sectional view of a dielectric barrier discharge plate.

1 to 3, the meat product plasma processing apparatus 100 includes a main chamber 180, a plasma chamber 150, a plasma generating unit 120, and an active gas circulating unit 160. The main chamber 180 houses the meat products and provides a closed space. The plasma chamber 150 is connected to the main chamber 180. The plasma generating unit 120 generates an active gas containing nitrogen oxide (NOx) gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen, which is disposed in the plasma chamber 150, (180). The active gas circulation unit 160 receives the active gas in the main chamber 180 and provides the active gas to the plasma chamber 150 again. The meat product is directly exposed to the active gas and is treated or sterilized by the active gas. Thus, the meat products can produce nitrite ions.

The plasma chamber 150 can prevent external leakage of the active gas into the closed vessel. The plasma chamber 150 may have a rectangular parallelepiped shape and may be formed of a metal material. The plasma chamber 150 may include a rectangular parallelepiped body chamber 151 and a rectangular parallelepiped plasma chamber lid 152. A gas distribution unit 140 and a plasma generating unit 120 may be disposed in the plasma chamber 150. The plasma chamber 150 may be provided with a mixed gas of air, oxygen and nitrogen, or an active gas through the plasma chamber lid 152.

The plasma generating unit 120 may generate an active gas containing nitrogen oxide (NxOy) gas by performing atmospheric pressure dielectric barrier discharge by receiving a mixed gas of nitrogen and oxygen. The nitrogen oxide (NxOy) gas may include a nitrite gas (NO2). The nitrogen oxide (NxOy) gas is dissolved in the moisture of the meat product to produce nitrate ions and nitrite ions. The plasma generating unit 120 may generate a nitrogen oxide (NxOy) gas by discharging a raw material gas (air in the atmosphere, a mixed gas of oxygen and nitrogen) performing the atmospheric pressure discharge or a circulated active gas. The plasma generator 120 may be designed to discharge gas while passing through it. The active gas can be circulated so that the concentration of the nitrite (NO2) gas is maintained above a predetermined value and the ozone gas is removed. The dielectric barrier discharge can lower the rate of generation of ozone and increase the rate of production of nitrite gas. On the other hand, the dielectric barrier discharge provides a higher space utilization than the microwave plasma, and is economical and structurally simple.

The main chamber 180 houses the meat products and provides a closed space. The main chamber 180 has a rectangular parallelepiped shape and the plasma chamber 150 can be mounted on the main chamber lid 182. The main chamber lid 182 may be provided with a handle 183. The main chamber lid 182 and the plasma chamber 150 may be separated from the main chamber 180 by using the handle 183. [

The meat product may be sausage, ham, bacon, or can ham. The raw material of the meat product may be pork, beef, chicken, duck meat, pork, goat meat, turkey meat, horse meat, or meat. The meat product may be mixed by a rotating wing (187) in the main chamber (180).

The main chamber 180 may be a mixer chamber for mixing the meat products. The main chamber 180 may include a rotating shaft 186 and blades 187 attached to the rotating shaft 186 for mixing the meat products. The rotary shaft 187 can be rotated by the driving motor 188. As the rotary shaft 186 rotates, the blade 187 attached to the rotary shaft can mix the cut meat products.

For example, in a mixer that mixes meat products, the lid of the mixer may be removed and the plasma chamber 150 may be mounted. Accordingly, the plasma dwelling process or the plasma sterilization process can be performed simultaneously with the mixing process.

The active gas circulation unit 160 may supply the active gas supplied from the main chamber 180 to the plasma chamber 150 as an input gas.

The active gas circulation unit 160 may maintain the concentration of the nitrite gas in the main chamber 180 at a predetermined value or lower and maintain the concentration of the nitrite gas at a predetermined value or higher. The active gas circulation unit 160 may include an ozone filter 161 to lower the concentration of ozone. The ozone filter 161 can decompose ozone into oxygen using light or a catalyst.

The active gas circulation unit 160 includes an ozone filter 161 connected to the main chamber 150 to remove ozone and a gas sensing unit connected to a rear end of the ozone filter 161 to measure the concentration of the nitrite gas And a compressor 163 connected to a downstream end of the gas sensing unit 164. The compressor 163 may again supply the active gas to the gas distribution unit 140 or the plasma chamber 150.

The active gas circulation unit 160 may artificially circulate the active gas to increase the absorption rate of the active gas generated by the plasma generation unit 120. The active gas circulation unit 160 may extract the active gas from the main chamber 180 through a pipe connected to the main chamber 180 and supply the activated gas to the gas distribution unit 140 again. The active gas circulation unit 160 can increase the concentration of the nitrite gas in the main chamber by controlling the partial pressure of ozone using an ozone filter. As a result, the absorption rate of the nitrite gas in the meat products increases, and the concentration of the nitrite ions in the meat products can be increased.

The active gas circulation unit 160 sufficiently lowers the partial pressure of the internal noxious gas using the ozone filter 161 and the NOx filter before opening the main chamber 180 for maintenance of the system after the process, It is possible to provide an environment in which the main chamber 150 can be opened.

The gas distributor 140 may include a rectangular perforated plate having a multi-layer structure. The gas distribution portion 140 may include a first gas distribution plate 144 and a second gas distribution plate 142 which are stacked in order. The hole size of the second gas distribution plate 142 may be larger than the hole size of the first gas distribution plate 144. The active gas supplied through the gas circulation unit 160 may be supplied to the gas inlet 153 of the plasma chamber. The gas provided to the gas inlet can be evenly distributed spatially through the second gas distribution plate and the first gas distribution plate.

The gas distribution unit 140 may be disposed on the plasma generating unit 120 in alignment with the plasma generating unit 120. The gas distributor 140 may uniformly distribute an active gas or a supply gas to generate a spatially uniform plasma. The gas distribution unit 140 includes two or more perforated plate layers and can supply gas to the plasma generation unit 120 uniformly. The material of the gas distribution part 140 may be a dielectric material, a ceramic material, or a metal material. The holes of the perforated plate may be arranged two-dimensionally in a matrix form. In addition, the first gas distribution plate 144 and the second gas distribution plate 142 may be spaced apart from each other.

The control unit 172 receives the concentration information of the active gas from the active gas monitoring unit 170 and controls the plasma generating unit 120 and the active gas circulating unit 160 to maintain the concentration of the active gas constant. Can be controlled.

The gas distribution unit 140 may include gas distribution plates 142 and 144 spaced apart from each other. The gas distribution plate may include a plurality of through holes, and may provide the active gas and / or the external gas to the plasma generating unit 120 through the through holes.

The plasma generating part 120 may include a plurality of dielectric barrier discharge modules 111 extending in parallel to each other. The plasma generating unit 120 may generate a uniform plasma using the circulated active gas.

The dielectric barrier discharge module 111 includes a first dielectric barrier discharge plate (not shown) extending in a first direction (x axis) in a layout plane defined by a first direction (x axis direction) and a second direction 110a), a second dielectric barrier discharge plate (110b) spaced apart in a third direction (z axis) perpendicular to the arrangement plane and extending in the first direction (x axis direction), and a second dielectric barrier discharge plate And a pair of spacers 122 disposed at both ends of the first dielectric barrier discharge plate 110a and the second dielectric barrier discharge plate 110b and maintaining a constant distance.

The first dielectric barrier discharge plate 110a and the second dielectric barrier discharge plate 110b are disposed such that first plasma electrodes 112a and 112b having the same shape are disposed on the surfaces of the first dielectric barrier discharge plate 110a and the second dielectric barrier discharge plate 110b, A second plasma electrode 114 of the same shape may be disposed on each of the surfaces of the plate 110a and the second dielectric barrier discharge plate 110b. The first and second plasma electrodes 112a and 112b may be spaced apart from each other in a second direction (y-axis direction). Accordingly, the first plasma electrode and the second plasma electrode, which are formed on both surfaces of the dielectric barrier discharge plate, can be extended in the x-axis direction while being spaced apart in the y-axis direction.

The first dielectric barrier discharge plate 110a has a plate shape of a dielectric material extending in a first direction and a pair of first plasma electrodes 112a and 112b spaced apart in a second direction are disposed on one surface, 2 plasma electrode 114 may be disposed. The first dielectric barrier discharge plate 110a may include first and second plasma electrodes 112a and 112b and a second plasma electrode 114 coated on both surfaces of an alumina substrate.

The second dielectric barrier discharge plate 110b may have the same shape as the first dielectric barrier discharge plate. The first dielectric barrier discharge plate and the pair of first plasma electrodes 112a and 112b of the second dielectric barrier discharge plate may be disposed to face each other. The first and second dielectric barrier discharge plates may be disposed in the xy plane, and may be disposed apart from each other in the z-axis direction. Thus, the active gas can pass through the space between the first and second dielectric barrier discharge plates.

In order to provide the active gas to the main chamber 180, the plasma generating part 120 may have a plurality of slit structures or comb structures.

The first and second plasma electrodes 112a and 112b and the second plasma electrode 114 may be coated with chromium (Cr) on the dielectric substrate 113 and then coated with silver (Ag) or gold (Au) . The dielectric barrier discharge plate may be formed by depositing a metal thin film on both sides of a thin dielectric plate of 2 mm or less. The plasma electrode may be deposited with two or more metal materials. The plasma electrode may be formed by first depositing chromium (Cr) to enhance the contact force with the dielectric, and then depositing silver / gold which is not oxidized on the electrode. The plasma electrode may be in the form of a line with a width of 10 mm or less. The line patterns on both sides can be alternately arranged. The first plasma electrode and the second plasma electrode may be applied to different voltages at opposite ends of the first plasma electrode and the second plasma electrode, respectively.

The first plasma electrodes 112a and 112b may be connected in parallel to one terminal of the AC power source. In addition, the second plasma electrodes 114 may be connected in parallel to other terminals of the AC power source.

The spacer 122 may include a right spacer and a left spacer. The first plasma electrodes 112a and 112b include two lines extending in a first direction, starting from the left end and stopping before reaching the right end. Accordingly, the left spacer may be in electrical contact with the first plasma electrodes 112a and 112b, and the right spacer may not be in electrical contact with the first plasma electrode.

On the other hand, the second plasma electrode 114 may start from the right end and stop before reaching the left end. Accordingly, the right spacer connects the second plasma electrode via the auxiliary connection electrode 117, and can be insulated from the first plasma electrodes 112a and 112b.

The spacer 122 may be formed of a conductive material and may separate and fix the first dielectric barrier discharge plate 110a and the second dielectric barrier discharge plate 110b to each other in the z-axis direction. The spacers 122 may be disposed at both ends of the dielectric barrier discharge plate to form an empty space between the dielectric barrier discharge plates. In addition, the spacer 122 may contact the first plasma electrodes and electrically connect the electrodes facing each other in parallel. In addition, the spacer 122 may electrically connect the even-numbered second plasma electrodes electrically via the auxiliary connection electrode and the coupling means.

The plasma generating part 120 may include a conductive support block 123 supporting the spacer 122 and extending in the third direction, a plurality of dielectric barrier discharge modules 123 disposed at the outermost portions of the plurality of dielectric barrier discharge modules, A pair of side insulating plates 128, and an insulating cover 127 disposed to surround the conductive supporting blocks and extending in the third direction.

The conductive support block 123 may include a left conductive support block and a right conductive support block. The left spacers may be fixed while being electrically connected to the left conductive support blocks. The right spacers may be fixed while being electrically connected to the right conductive support blocks. The conductive support block 123 may be in the form of a plate extending in the third direction. The left spacers may be coupled to the left conductive support block through a coupling means such as a bolt. Also, the right spacers may be coupled to the right conductive support block via a coupling means such as a bolt.

The electrode connecting rod 121 may be electrically connected to the conductive support block 123 and the AC power source 118. The electrode connecting rod 121 may extend in the z-axis direction at the conductive support block 123.

The insulating cover 127 may be disposed to surround the conductive support block 123. The insulating cover 127 may have a plate shape extending in the z-axis direction. The insulating cover 127 may include a depression for engaging a conductive supporting block extending in the z-axis direction on the inner surface. The conductive support block 123 may be inserted into the depressed portion for coupling to the conductive support block to suppress parasitic discharge and provide electrical safety. The insulating cover 127 may be formed of alumina or PTFE (Polytetrafluoroethylene).

The side insulating plate 128 may be disposed at the outermost portion of the plurality of dielectric barrier discharge modules and extend in the first direction. The side insulating plate 128 may extend in the first direction in the xz plane. The side insulating plate 128 may be formed of alumina or PTFE (Polytetrafluoroethylene). The side insulating plate 128 can improve the electrical safety. The side insulating plate 128 may be coupled to the conductive support block 123. The side insulating plate can provide electrical stability while suppressing parasitic discharge.

The AC power source 118 may apply a high voltage of 3 kV or more between 20 kHz and 50 kHz between the first plasma electrode and the second plasma electrode through the electrode connecting rod 121. Preferably, the frequency of the alternating-current power supply 118 may be 30 kHz to 50 kHz to suppress ozone generation. The power density of the first plasma electrode and the second plasma electrode may be 10 W / cm ^{2 or} more to suppress ozone generation.

The electrode connecting rod 121 may extend outwardly from a side surface of the plasma chamber 150. The electrode connecting rod 121 may include an insulating jig for insulation.

The electrode connecting rod 121 may extend to the outside of the plasma chamber 150 through a chamber flange 155 mounted on a side surface of the plasma chamber 150. The electrode connecting rod 121 may be fixed by a dummy flange 154 formed of an insulator sealing the electrode connecting rod. The chamber flange 155 may be secured to the dummy flange 154 via bolts.

 The active gas monitoring unit 170 may measure the concentration of the nitrified oxide gas in the main chamber 180. For example, the active gas monitoring unit 170 can measure the concentration of the nitrite gas in real time using the absorption spectrum of the nitrite gas.

According to an embodiment of the present invention, there is provided a method of manufacturing a meat product, the method comprising: performing a plasma discharge using a mixed gas of nitrogen and oxygen to produce an active gas containing nitrogen oxides; . The meat products directly exposed to the nitrogen oxides generate nitrite ions and perform a dredging process. In addition, the meat product directly exposed to the nitrogen oxide is sterilized.

The step of directly supplying the active gas to the meat product may be performed during the mixing process of the meat product. For example, providing the active gas to the meat product and the mixing process may be performed simultaneously. To this end, the plasma chamber for performing the plasma discharge and the main chamber for housing the meat product may be integrally formed with each other.

An active gas circulation step may be added in which the active gas exposed to the meat product is received and ozone is removed from the active gas and the plasma is discharged again. Accordingly, the concentration of the active gas is maintained at a predetermined value or higher, and the ozone gas can be removed.

The plasma discharge is an atmospheric pressure dielectric barrier discharge, and the power density of the dielectric barrier discharge is 10 W / cm ² or more to suppress ozone generation, and the frequency of the dielectric barrier discharge may be 30 kHz or more to suppress ozone generation .

According to a modified embodiment of the present invention, the plasma chambers performing the plasma discharge and the main chambers accommodating the meat products can be spatially separated from each other. The plasma chamber may provide the active gas formed through the atmospheric pressure plasma discharge to the main chamber. For example, the plasma chamber may remotely generate an active gas and provide the active gas to the main chamber or the mixer chamber via a pipe.

4A and 4B are perspective views illustrating a plasma generator according to another embodiment of the present invention.

4A and 4B, the plasma generating part 220 includes a plurality of first dielectric barrier discharge rods 212a extending in a first direction and arranged at regular intervals and coated with an insulator, A plurality of second dielectric barrier discharge rods 212b disposed between the first dielectric barrier rods of the first dielectric barrier discharge rods 212 and extending in a first direction, A left conductive support block 223a disposed on the left side and extending in a third direction and a right side conductive support block 223a that is fixed to one end of the second dielectric barrier discharge rods and disposed to the right of the second dielectric barrier discharge rod and extending in a third direction And a support block 223b.

The plasma generating part 220 may be integrated or mounted in a plasma processing apparatus.

The plasma processing apparatus includes a plasma chamber 150 for providing an enclosed space for accommodating oxygen gas and nitrogen gas provided from the outside, a plasma disposed inside the plasma chamber and generating an active gas containing a nitriding oxide gas using plasma And an active gas circulation unit 160 for removing and circulating ozone by receiving the active gas in the plasma chamber. The active gas circulation unit 160 can remove and circulate ozone through the ozone filter.

The first dielectric barrier discharge rods 212a may extend in parallel in the first direction and one end may be fixed to the left conductive support block 223a through coupling means. The first dielectric barrier rods 212a may be formed of an aluminum rod, and the surface of the first dielectric barrier rods 212a may be coated with an aluminum oxide film. The left conductive support block 223a may apply the same voltage to the first dielectric barrier discharge rods 212a.

The second dielectric barrier discharge rods 212b may extend in parallel in the first direction and one end may be fixed to the right conductive support block 223b through coupling means. The second dielectric barrier rods are aluminum rod, and the surface of the second dielectric barrier rods may be coated with an aluminum oxide film. The right conductive support block 223b may apply the same voltage to the second dielectric barrier discharge rods. The second dielectric barrier discharge rods may be disposed between neighboring first dielectric barrier discharge rods.

The left conductive support block 223a may be in the form of a plate extending in the third direction. The left conductive support block supports the first dielectric barrier discharge rods and can apply a voltage.

The right conductive supporting block 223b may be arranged in parallel with the left conductive supporting block and may be plate-shaped. The right conductive support block supports the second dielectric barrier discharge rods and can apply a voltage.

The side insulating plate 228 may be disposed at the outermost portion of the first dielectric barrier discharge rods in the third direction. The side insulating plate 228 can suppress the parasitic discharge and maintain the discharge stability. The side insulating plate extends in the first direction and may be in the form of a plate made of ceramic or PTFE.

The left insulative cover 227a may be disposed to surround the left conductive support block 223a. The left insulative cover may have a plate shape extending in the third direction and may include a depression in which the left side leadable support block can be inserted.

The right insulation cover 227b may be arranged to surround the right conductive support block 223b. The right insulative cover may have a plate shape extending in a third direction, and a depression may be formed inside the right insulative cover to allow the right leadable support block to be inserted.

The electrode connecting rod 221 is coupled to the left conductive supporting block and the right conductive supporting block, respectively, and extends in the third direction, and may be connected to the AC power source 118. Accordingly, an AC voltage may be applied between the first dielectric barrier discharge bar and the second dielectric barrier discharge bar.

The plasma can be generated while the active gas passes through the space between the first dielectric barrier discharge rod and the second dielectric barrier discharge rod.

5 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.

Referring to FIG. 5, the meat product plasma processing apparatus 100a includes a main chamber 180 for containing meat products and providing a closed space, a plasma chamber 150 connected to the main chamber 180, A plasma generator 120 for generating an active gas containing a nitrogen oxide gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the activated gas to the main chamber, And an active gas circulation unit 160 for supplying the gas to the plasma chamber again. The meat product is directly exposed to the active gas and is treated and sterilized by the active gas.

The active gas circulation unit 160 may circulate the active gas generated by the plasma generation unit 120. The active gas circulation unit 160 extracts the active gas from the main chamber 180 through a pipe connected to the main chamber 180 and supplies the extracted gas to the gas distribution unit 140 and the rotation shaft 186 . The flow rate ratio between the gas distribution portion and the rotation shaft may be controlled by a flow rate control portion. The active gas circulation unit 160 can increase the concentration of the nitrification oxide gas by controlling the partial pressure of ozone by using the ozone filter 161.

The output of the active gas circulation unit 160 may supply the active gas to the plasma chamber (or gas distribution unit) and the rotation shaft.

The main chamber 180 may include a rotating shaft 186 and a blade 186 attached to the rotating shaft for mixing the meat product. The shape of the rotating shaft and the blades can be variously modified as long as mixing of the meat products is performed. The rotary shaft 186 may be in the shape of a pipe having an axial through hole. The rotating shaft 186 may include a plurality of nozzles 186a connected to the through holes. The active gas circulation unit may provide the active gas to the rotation shaft. Thus, while stirring the meat product while rotating the rotating shaft, the active gas may be injected through the nozzle 186 of the rotating shaft to bury or sterilize the meat product.

6 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.

6, the meat product plasma processing apparatus 100b includes a main chamber 180 for storing meat products and providing a closed space, a plasma chamber 150 connected to the main chamber 180, A plasma generator 120 for generating an active gas containing a nitrogen oxide gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the activated gas to the main chamber, And an active gas circulation unit 160 for supplying the gas to the plasma chamber again. The meat product is directly exposed to the active gas and is treated or sterilized by the active gas.

The plasma chamber 150 and the main chamber 180 may be spaced apart from each other. Accordingly, the main chamber may use the same structure as the chamber of the mixer. Meanwhile, the plasma generator may form a remote plasma in the plasma chamber, and may provide the active gas to the main chamber through a connection pipe 159 connecting the plasma chamber and the main chamber. The connecting pipe 159 may be a corrugated pipe. As the plasma chamber and the main chamber are separated, the space utilization is improved and the cost can be reduced because the conventional mixer (main chamber) is hardly deformed.

The main chamber described above can simultaneously perform the mixing function of the meat product and the plasma dwelling process, but according to another embodiment, the main chamber does not perform the mixing function and performs only the plasma dwelling process or the plasma sterilization process can do.

7 is a conceptual diagram illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.

Referring to FIG. 7, the meat product plasma processing apparatus 100c includes a main chamber 180 for storing meat products and providing a closed space, a plasma chamber 150 connected to the main chamber 180, A plasma generator 120 for generating an active gas containing a nitrogen oxide gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the activated gas to the main chamber, And an active gas circulation unit 160 for supplying the gas to the plasma chamber again. The meat products are directly exposed to the active gas and treated with the active gas or treated with the active gas.

The main chamber 180 may contain crushed or crushed meat products and may be treated with plasma or sterilized. The meat product may be directly exposed to the active gas for plasma-free or sterilization. To this end, the main chamber 180 may include a moving means 287 for moving the meat product. The moving means 287 may be a conveyor belt. The main chamber 180 may include loading means (not shown) for loading the meat products into the moving means 287 and accommodating means (not shown) for storing plasma-treated meat products.

The meat product moving in the moving means can be loaded on the moving means with a large surface area. The meat product may be in the form of a small pest or plate to have a large surface area.

8 and 9 are conceptual diagrams illustrating a meat product plasma processing apparatus according to another embodiment of the present invention.

Referring to FIG. 8, the meat product plasma processing apparatus 200 includes a main chamber 280 for containing meat products and providing a closed space, a plasma chamber 150 connected to the main chamber 280, A plasma generator 120 for generating an active gas containing a nitrogen oxide gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the activated gas to the main chamber, And an active gas circulation unit 160 for supplying the gas to the plasma chamber again. The meat product is directly exposed to the active gas and is treated or sterilized by the active gas.

The plasma chamber 150 can prevent external leakage of the active gas into the closed vessel. The plasma chamber 150 may have a rectangular parallelepiped shape or a cylindrical shape and may be formed of a metal material. The plasma chamber 150 may include a body chamber 151 and a plasma chamber lid 152. A gas distribution unit 140 and a plasma generating unit 120 may be disposed in the plasma chamber 150. The plasma chamber 150 may be provided with a mixed gas of air, oxygen and nitrogen, or an active gas through the plasma chamber lid 152.

The plasma generating unit 120 may generate an active gas containing nitrogen oxide (NxOy) gas by performing atmospheric pressure dielectric barrier discharge by receiving a mixed gas of nitrogen and oxygen. The nitrogen oxide (NxOy) gas may include a nitrite gas (NO2). The nitrogen oxide (NxOy) gas is dissolved in the moisture of the meat product to produce nitrate ions and nitrite ions. The plasma generating unit 120 may generate a nitrogen oxide (NxOy) gas by discharging a raw material gas (air in the atmosphere, a mixed gas of oxygen and nitrogen) performing the atmospheric pressure discharge or a circulated active gas. The plasma generator 120 may be designed to discharge gas while passing through it. The active gas can be circulated so that the concentration of the nitrite (NO2) gas is maintained above a predetermined value and the ozone gas is removed.

The main chamber 280 accommodates meat products and provides a closed space. The main chamber 180 is cylindrical in shape and the plasma chamber 150 can be mounted on the main chamber lid 282. The main chamber 280 may be arranged to be inclined in a horizontal plane.

The meat product may be sausage, ham, bacon, or can ham. The raw material of the meat product may be pork, beef, chicken, duck meat, pork, goat meat, turkey meat, horse meat, or meat. The meat product may be mixed with a spatula 287 of a bar shape disposed on the inner wall of the main chamber 280 and the rotation of the main chamber 280.

The main chamber 280 may constitute a vacuum tumbler. The vacuum tumbler may remove air from the main chamber. The main chamber may then be rotated for mixing and massaging of the meat product. Specifically, the main chamber includes a bar-shaped spatula provided on the inner wall of the main chamber, and the meat product is moved up and down by rotation of the main chamber to perform mixing and massaging of the meat product .

Referring to FIG. 9, the meat product plasma processing apparatus 200a includes a main chamber 280 for storing meat products and providing a closed space, a plasma chamber 150 connected to the main chamber 280, A plasma generator 120 for generating an active gas containing a nitrogen oxide gas by using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the activated gas to the main chamber, And an active gas circulation unit 160 for supplying the gas to the plasma chamber again. The meat product is directly exposed to the active gas and is treated or sterilized by the active gas. The main chamber 280 may constitute a vacuum tumbler.

The plasma chamber 150 is spatially separated from the main chamber, and the plasma chamber can provide an active gas generated using a remote plasma to the main chamber 280 through a connection pipe 259. The connecting pipe 259 may be a corrugated pipe. The connection pipe 259 may be connected through a bearing disposed at the center of the lid of the main chamber. Accordingly, the connection pipe may not rotate despite the rotation with the main chamber.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And all of the various forms of embodiments that can be practiced without departing from the technical spirit.

120: Plasma generator
150: plasma chamber
160: active gas circulation part
180: main chamber

Claims (22)

A main chamber for receiving meat products and providing an enclosed space;
A plasma chamber connected to the main chamber;
A plasma generating unit disposed in the plasma chamber and generating an active gas containing nitrogen oxide gas using an atmospheric pressure dielectric barrier discharge plasma of a mixed gas of oxygen and nitrogen and providing the active gas to the main chamber; And
And an active gas circulation unit for receiving the active gas inside the main chamber and providing the active gas back to the plasma chamber,
Wherein the meat product is directly exposed to the active gas and is treated by the active gas. The method according to claim 1,
Wherein the main chamber includes a rotating shaft for mixing the meat product and a blade attached to the rotating shaft. 3. The method of claim 2,
The rotary shaft is in the shape of a pipe having an axial through hole,
Wherein the rotating shaft includes a plurality of nozzles connected to the through holes,
Wherein the active gas circulation unit supplies the active gas to the rotating shaft. The method according to claim 1,
The active gas circulation unit includes:
An ozone filter connected to the main chamber to remove ozone;
A gas sensing unit connected to a downstream end of the ozone filter to measure a concentration of the nitrite gas; And
And a compressor connected to a downstream end of the gas sensing unit,
Wherein the compressor provides the active gas to the plasma chamber. The method according to claim 1,
Wherein the plasma generating unit includes a plurality of dielectric barrier discharge modules spaced apart from each other and extending in parallel to each other. 6. The method of claim 5,
Wherein the dielectric barrier discharge module comprises:
A first dielectric barrier discharge plate extending in a first direction at a placement plane defined by the first direction and the second direction;
A second dielectric barrier discharge plate spaced apart in a third direction perpendicular to the arrangement plane and extending in the first direction; And
And a pair of spacers disposed at both ends of the first dielectric barrier discharge plate and the second dielectric barrier discharge plate and maintaining a constant distance,
Wherein the first dielectric barrier discharge plate and the second dielectric barrier discharge plate are disposed such that first plasma electrodes having the same shape are respectively disposed on opposite surfaces of the first dielectric barrier discharge plate and the second dielectric barrier discharge plate,
And second plasma electrodes of the same shape are respectively disposed on the surfaces of the first dielectric barrier discharge plate and the second dielectric barrier discharge plate,
Wherein the first plasma electrode and the second plasma electrode are spaced apart from each other in a second direction. The method according to claim 6,
Wherein the plasma generator comprises:
A conductive support block supporting the spacer and extending in the third direction;
A pair of side insulating plates disposed at the outermost sides of the plurality of dielectric barrier discharge modules and extending in the first direction; And
And an insulating cover disposed to surround the conductive supporting block and extending in the third direction. The method according to claim 1,
Wherein the plasma generator comprises:
A plurality of first dielectric barrier discharge bars extending in a first direction and arranged at regular intervals and coated with an insulator;
A plurality of second dielectric barrier discharge rods disposed between adjacent pairs of first dielectric barrier rods and extending in a first direction;
A left conductive support block that fixes one end of the first dielectric barrier discharge rods and is disposed on the left side of the first dielectric barrier discharge rod and extends in a third direction; And
And a right conductive support block secured to one end of the second dielectric barrier discharge rods and disposed on the right side of the second dielectric barrier discharge rod and extending in a third direction. 9. The method of claim 8,
A side insulating plate disposed at an outermost side in the third direction of the first dielectric barrier discharge rods;
A left side insulating cover arranged to surround the left conductive supporting block; And
And a right insulation cover arranged to surround the right conductive support block. The method according to claim 1,
Wherein the plasma chamber and the main chamber are spaced apart from each other and the plasma generating unit forms a remote plasma and provides the active gas to the main chamber. The method according to claim 1,
Wherein the main chamber further comprises transport means for transporting the meat product. The method according to claim 1,
Further comprising a gas distributing unit disposed inside the plasma chamber and distributing the supplied gas to the plasma generating unit,
Wherein the gas distribution portion comprises a multi-layered gas distribution plate spaced apart from one another,
Wherein the gas distribution plate includes a plurality of through holes and provides the active gas to the plasma generating unit through the through holes. The method according to claim 1,
Wherein the main chamber rotates for mixing and massaging of the meat products. The method according to claim 1,
Wherein the main chamber includes a spatula disposed on an inner wall of the main chamber,
Wherein the meat product is mixed and massaged by moving up and down the meat product by rotation of the main chamber. Performing an atmospheric pressure plasma discharge using a mixed gas of nitrogen and oxygen to produce an active gas containing nitrogen oxide gas; And
Providing the active gas directly to the meat product,
Wherein the meat products directly exposed to the nitrogen oxide gas are subjected to a salt treatment or sterilization treatment so as to produce nitrite ions. 16. The method of claim 15,
Wherein the step of directly supplying the active gas to a meat product is performed during a mixing process of the meat product. 16. The method of claim 15,
Wherein the plasma chamber for performing the plasma discharge and the main chamber for housing the meat product are formed integrally with each other. 16. The method of claim 15,
Wherein the plasma chamber for performing the atmospheric pressure plasma discharge and the main chamber for accommodating the meat product are spatially separated from each other,
Wherein the plasma chamber provides the active gas formed through the atmospheric pressure plasma discharge to the main chamber. 16. The method of claim 15,
Further comprising an active gas circulation step of supplying the active gas exposed to the meat product and removing ozone from the active gas and discharging plasma again. 16. The method of claim 15,
Wherein the plasma discharge is an atmospheric pressure dielectric barrier discharge,
The power density of the dielectric barrier discharge is 10 W / cm ² or more in order to suppress the generation of ozone,
Wherein the frequency of the dielectric barrier discharge is 30 kHz to 50 kHz in order to suppress ozone generation. 16. The method of claim 15,
Wherein the step of directly supplying the active gas to the meat product is performed in a mixer or a vacuum tumbler for mixing the meat product. A meat product treated by the method of any one of claims 15 to 21.

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