TWI653062B - Method and apparatus for deodorization - Google Patents

Abstract

The object of the present invention is to reduce the odor of food, the odor of a container transferred to a food, or the odor of a food container. In order to decompose at least one of a substance having a carbon double bond and an unsaturated bond and a sulfide in an odor component contained in a roast chicken as a food, a deodorizing device is used to irradiate the roast chicken with positive ions and negative ions.

Description

Deodorization method and deodorizing device

The present invention relates to a deodorizing method and a deodorizing device which use ions to reduce the characteristic odor of a food or food container.

Patent Document 1 discloses that an ion generated by dissociating oxygen and water vapor in the air by plasma discharge has a deodorizing effect, and the deodorization and deodorization in the room are performed by using this.

An ion generating device that generates such ions has been put into practical use to generate H ⁺ (H ₂ O) _n as a positive ion (n is a natural number) and O ₂ ^- (H ₂ O) _m as a negative ion in air. For natural numbers). The positive ions and negative ions form a form of so-called cluster ions, that is, a plurality of water molecules are attached around the hydrogen ions (H ⁺ ) or oxygen ions (O ₂ ^- ). If the positive ion released from the air chemically reacts with the negative ion, it becomes hydrogen peroxide water H ₂ O ₂ or hydroxyl radical ‧ OH as an active material. It can be seen that by carrying out the oxidation reaction of the active material from the suspended particles or suspended bacteria, the suspended particles can be inactivated or the suspended bacteria can be sterilized.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication "Japanese Patent No. 5230150 (issued on July 10, 2013)"

Food stores such as supermarkets, department stores, etc. display fresh fish, cooked food (home cooking, fried food, etc.), bread and other foods. In particular, it is sometimes ensured that customers can purchase the required amount of food, sometimes not packaged and sealed and displayed in an open space. Such foods deteriorate quickly due to exposure to the outside atmosphere, so they usually are removed from the store after a certain period of time. Moreover, since such foods are easy to attract insects such as flies due to the emission of a unique food odor, it is desirable to reduce the odor of food.

Further, in a container such as a tray on which food is placed, foamed styrene is often used, and a odor characteristic of styrene is emitted. If the odor is transferred to the food, the flavor of the food may be destroyed. Moreover, the odor of the above-mentioned container itself is also unique, and discomfort may occur in different people.

Patent Document 1 discloses that ions have an effect on deodorization and deodorization in a room. However, in Patent Document 1, the odor of the food, the container in contact with the food, or the container itself is not clearly described.

The present invention has been made in view of the above problems, and an object thereof is to reduce the odor of food, the odor of a container transferred to a food, or the odor of a food container.

In order to solve the above problems, a deodorizing method according to an aspect of the present invention includes a positive-negative ion irradiation step of decomposing a substance having a carbon double bond and an unsaturated bond and a sulfide in an odor component contained in a food. The above foods illuminate positive ions and negative ions.

In order to solve the above problems, another aspect of the present invention for deodorizing includes a positive/negative ion irradiation step of decomposing styrene in a odor component contained in a container or a food contacted with the container to the container. Or the above foods are irradiated with positive ions and negative ions.

In order to solve the above problems, a deodorizing device according to an aspect of the present invention includes an ion generating device which is a substance having a carbon double bond and an unsaturated bond and a sulfide component in an odor component contained in a food. The solution generates positive ions and negative ions supplied to the above food.

In order to solve the above problems, another aspect of the present invention provides a deodorizing device comprising an ion generating device for decomposing styrene in a odor component contained in a container or a food contacted with the container, and supplying the styrene to the above Positive ions and negative ions of the container or the above food.

According to one aspect of the present invention, the effect of reducing the odor of the food, the odor of the container transferred to the food, or the odor of the food container can be exhibited.

1‧‧‧Ion generator

2‧‧‧Air supply device

3‧‧‧Control Department

4, 5, 6‧‧‧ shell

10, 10A~10C‧‧‧ Deodorization device

11‧‧‧High voltage generating circuit

12‧‧‧Positive Ion Generation Department

13‧‧‧ Negative Ion Generation Department

41, 51‧‧‧ air outlet

42, 43‧‧ ‧ slab

44‧‧‧Operation Department

45‧‧‧air inlet

61, 62‧‧‧ needle electrode

63‧‧‧Electrode Protection Department

100‧‧‧ Showcase

101‧‧‧flat

102‧‧‧mounting table

200‧‧‧Refrigerator

201‧‧‧ display surface

202‧‧‧ wall

203‧‧‧ Body Department

300‧‧‧ refrigerator

301‧‧‧Refrigerator

302‧‧‧ Deodorizing box

400‧‧‧Article storage room

410‧‧‧Storage scaffolding

411‧‧‧ Shelving Department

B1, B2, B3‧‧‧ bags

D‧‧‧ capture device

F‧‧‧Test food

F1‧‧‧ roast chicken (food, deodorant object)

F2‧‧‧ fresh fish (food, deodorant object)

F3‧‧‧ Deodorant food (food, deodorant)

G1, G2, G3‧‧‧ gas traps

T, T1~T3‧‧‧Tray (container, deodorizing object)

TG‧‧‧Tray group

TO1, TO2‧‧‧ test pieces

Fig. 1 is a block diagram showing the system configuration of the deodorizing apparatus according to the first to fourth embodiments of the present invention.

Fig. 2 is a perspective view showing the appearance of the deodorizing device according to the first and second embodiments of the present invention.

Fig. 3 is a perspective view showing a state of use of the deodorizing device according to the first embodiment of the present invention.

Fig. 4 is a perspective view showing another use state of the deodorizing device of the first embodiment.

Fig. 5 is a perspective view showing a state of use of the deodorizing device according to the second embodiment of the present invention in a refrigerator.

Fig. 6 is a perspective view showing a state of use of the deodorizing device according to the third embodiment of the present invention in an article storage room.

Fig. 7 (a) is a side view of the deodorizing apparatus used in the test of the fourth embodiment for verifying the deodorizing effect of the deodorizing apparatus of the first to third embodiments, and (b) is a perspective view of the deodorizing apparatus.

8(a) to 8(d) are perspective views showing the order of preparation of the concentrated gas used in the above test.

Fig. 9 (a) to (d) are perspective views showing the procedure of the above test for each of the test piece for causing ions to act and the test for preventing ions from acting.

Figures 10(a) to (d) show the occurrence of a compound for making an ion pair a odor component of roast chicken. A chromatogram of the detection results of the respective components of the test piece to be tested and the test piece which does not cause the ion pair to become a odor component of the roast chicken.

Fig. 11 (a) to (d) show each of the test pieces in which the test piece for causing the ion pair to become the odor component of the fresh fish and the test piece which does not cause the ion pair to become the odor component of the fresh fish. Chromatogram of the test results of each compound.

[Deodorizing device]

The system configuration of the deodorizing device 10 (10A to 10C) used in the first to fourth embodiments of the present invention will be described with reference to Fig. 1 . The external appearance of the deodorizing device 10 (10A) used in the first and second embodiments will be described with reference to Fig. 2 . Fig. 1 is a block diagram showing the system configuration of the deodorizing device 10. FIG. 2 is a perspective view showing the appearance of the deodorizing device 10.

As shown in FIG. 1, the deodorizing device 10 includes an ion generating device 1 that generates positive ions and negative ions, a blowing device 2 that sends positive ions and negative ions to the outside, and a control unit 3 that pairs the ion generating device 1 and the air supply device. The device 2 performs control. Moreover, as shown in FIG. 2, the deodorizing apparatus 10 includes the casing 4, and the ion generating device 1, the air blowing device 2, and the control part 3 are accommodated in the inside of the casing 4. The casing 4 has an air outlet 41, a first louver 42, a second shutter 43, an operation portion 44, and an air inlet 45.

The air outlet 41 is an opening provided for discharging (blowing) the positive ions and the negative ions generated by the ion generating device 1 together with the exhaust gas (wind) generated by the air blowing device 2 to the outside of the casing 4. The air outlet 41 is formed in a long shape in the horizontal direction on the front surface of the casing 4.

The first shutter 42 is a shutter that causes the exhaust gas flow from the air outlet 41 to face in the upward direction or the downward direction. The first shutter 42 has a plate-like member that covers the length of the gas outlet 41 in substantially the entire longitudinal direction, and is disposed so as to traverse the gas outlet 41. Further, the first shutter 42 is rotatably supported with respect to the casing 4, and the orientation can be changed manually.

The second shutter 43 is provided with a plurality of shutters for causing the exhaust gas flow from the air outlet 41 to face the right or left direction. The second shutter 43 is disposed at a predetermined interval in the longitudinal direction of the air outlet 41, and is rotatably supported by the casing 4 so as to be rotatable, and the orientation can be changed manually. Further, the three third shutters 43 on the left side are coupled to each other in a linked manner, and the three third shutters 43 on the right side are coupled to each other in a linked manner. Thereby, the three third shutters 43 on the left side and the three second shutters 43 on the right side can be individually rotated to have different orientations.

The operation unit 44 has a part of various operation buttons for the user to operate, a display lamp for displaying an operation state, and the like. The operation unit 44 is disposed on the right side of the front surface of the casing 4.

The intake port 45 is an opening provided to introduce the outside air into the inside of the casing 4 . The intake port 45 is constituted by a plurality of slit-like holes formed in the upper surface of the casing 4.

The ion generating apparatus 1 has a high voltage generating circuit 11 that generates a high voltage pulse, a positive ion generating unit 12, and a negative ion generating unit 13. The positive ion generating unit 12 includes a dielectric electrode and a discharge electrode (not shown), and generates a positive ion by applying a positive voltage pulse generated by the high voltage generating circuit 11. The negative ion generating unit 13 includes a dielectric electrode and a discharge electrode (not shown), and generates a negative ion by applying a negative voltage pulse generated by the high voltage generating circuit 11.

The configuration of the ion generating apparatus 1 described above is an example, and the apparatus is capable of generating positive ions and negative ions of a desired concentration, and is not particularly limited by the above configuration.

The positive ions generated by the positive ion generating unit 12 are ions mainly composed of H ⁺ (H ₂ O) _m (m is an arbitrary natural number). The negative ions generated by the negative ion generating portion 13 are ions mainly composed of O ₂ ^- (H ₂ O) _n (n is an arbitrary natural number).

When a positive ion and a negative ion are simultaneously present in the air, a chemical reaction is performed as shown in the following formulas (1) to (3), and a hydroxyl radical which is a reactive oxygen species is efficiently generated ( ‧OH). Here, the m, n, m', and n' points in the formulas (1) to (3) Don't be an arbitrary natural number.

H ⁺ (H ₂ O) _m +O ₂ ^- (H ₂ O) _n →‧OH+1/2O ₂ +(m+n)H ₂ O...(1)

H ⁺ (H ₂ O) _m +H ⁺ (H ₂ O) _m' +O ₂ ^- (H ₂ O) _n +O ₂ ^- (H ₂ O) _n' →2‧OH+O ₂ +(m+ m'+n+n')H ₂ O...(2)

H ⁺ (H ₂ O) _m +O ₂ ^- (H ₂ O) _n →3‧OH+(m+n-1)H ₂ O...(3)

Furthermore, in the case where only positive ions or only negative ions are released into the air, hydroxyl radicals are not significantly generated. Therefore, it is considered that by simultaneously releasing positive ions and negative ions, water molecules and clusters are formed, and stable positive ions and negative ions react with each other, and the formation of hydroxyl radicals is remarkable.

The air blowing device 2 is a device that generates an air flow (air path) that blows air introduced from the air inlet 45 of the casing 4 from the air outlet 41, and is constituted by a fan. The positive ion generating unit 12 and the negative ion generating unit 13 generate positive ions and negative ions, respectively, to the air passage.

The control unit 3 controls the operations of the ion generating device 1 and the air blowing device 2 based on the operation (instruction) of the user received by the operation unit 44. The control unit 3 can be realized by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like, or can be realized by software using a CPU (Central Processing Unit).

[Embodiment 1]

The first embodiment of the present invention will be described below with reference to Figs. 1 to 4 .

In the present embodiment, an example (deodorization method) in which the deodorizing device 10 is used for deodorization of roast chicken will be described. Fig. 3 is a perspective view showing a state of use of the deodorizing device 10 of the first embodiment.

As shown in FIG. 3, the deodorizing device 10 is disposed on the showcase 100. The showcase 100 is a food display cabinet that is installed in a food store of a supermarket, a department store, or the like. The showcase 100 has The flat portion 101 provided at the highest position and the plurality of stages of the mounting table 102 located at a position lower than the flat portion 101.

A plurality of trays T1 are placed on the mounting table 102, and the roast chicken F1 as a deodorizing target food (deodorizing target) is placed on each of the trays T1 in a state of being exposed to the outside atmosphere. The tray T1 is formed of a styrene-based material such as foamed styrene. The deodorizing device 10 is disposed on the flat portion 101 such that the air outlet 41 faces the mounting table 102 side.

In the above display environment, the deodorizing device 10 causes the ion generating device 1 to generate positive ions and negative ions (positive and negative ion irradiation steps) on the wind side with respect to the air flow of the roast chicken F1. Further, the deodorizing device 10 generates an air flow by blowing the roast chicken F1 by the air blowing device 2 (air blowing step), and blowing (irradiating) the roast chicken F1 on the mounting table 102 from the air outlet 41 includes generation of ions. The positive ion and negative ion air generated by the device 1. The generation of positive ions and negative ions is performed simultaneously with the blowing system. Further, by appropriately adjusting the orientations of the first shutter 42 and the second shutter 43 shown in FIG. 2, the air blown from the deodorizing device 10 comes into contact with all the grilled chickens F1 displayed. Thereby, among the odor components emitted from the roast chicken F1, a substance having a carbon double bond and an unsaturated bond (refer to Embodiment 4) and the sulfide are decomposed, and the main odor component which is emitted from the tray T1, that is, styrene is decomposed. .

Next, an example (deodorization method) in which the deodorizing device 10 is used for deodorization of fresh fish will be described. Fig. 4 is a perspective view showing another use state of the deodorizing device 10 of the first embodiment.

As shown in FIG. 4, the deodorizing device 10 is disposed on the refrigerator 200. The refrigerator 200 is a food display cabinet installed in a food store of a supermarket, a department store, or the like. The refrigerator 200 has a flat display surface 201, a wall portion 202 surrounding the periphery of the display surface 201, and a body portion 203 provided on the lower side of the display surface 201. The wall portion 202 has a plurality of cold air radiation ports (not shown) that radiate cold air generated inside the main body portion 203 to the display surface 201.

The display surface 201 is placed with a tray T2 on the tray T2 to be exposed to the outside atmosphere. Fresh fish F2 as a food for deodorization is placed. The tray T2 is formed of a styrene-based material such as foamed styrene. The deodorizing device 10 is disposed on the display surface 201 such that the air outlet 41 faces the tray T2 side.

In the above display environment, the deodorizing device 10 causes the ion generating device 1 to generate positive ions and negative ions (positive and negative ion irradiation steps) on the wind side of the air flow with respect to the fresh fish F2. Further, the deodorizing device 10 generates an air flow by blowing the fresh fish F2 by the air blowing device 2 (air blowing step), and blowing (irradiating) the fresh fish F2 on the display surface 201 from the air outlet 41 includes the ion generating device 1 The air that produces positive and negative ions. The generation of positive ions and negative ions is performed simultaneously with the blowing system. Further, by appropriately adjusting the orientations of the first shutter 42 and the second shutter 43 shown in FIG. 2, the air blown from the deodorizing device 10 comes into contact with all the fresh fish F2 displayed. As a result, among the odor components emitted from the fresh fish F2, a substance having a double bond of carbon and an unsaturated bond (see Embodiment 4) and the sulfide are decomposed, and styrene which is a main odor component emitted from the tray T2 is decomposed.

As described above, in the deodorizing method using the deodorizing device 10 of the present embodiment, air containing positive ions and negative ions is blown to the roast chicken F1 and the fresh fish F2. Thereby, the roast chicken F1 and the fresh fish F2 reduce the above-mentioned odor component by the action of a positive ion and a negative ion. Therefore, there is no such phenomenon that the flies are attracted by the smell of roast chicken F1 and fresh fish F2. Therefore, the hygienic state of the deodorized food can be favorably maintained.

Further, since styrene is also decomposed, the styrene odor which adheres to the roast chicken F1 and the fresh fish F2 from the trays T1 and T2 is also reduced. Therefore, the flavor of roast chicken F1 and fresh fish F2 can be prevented from being damaged by styrene.

In the present embodiment, the roast chicken F1 and the fresh fish F2 are listed as the deodorizing target food to which the positive ions and the negative ions are supplied, but the roast chicken F1 and the fresh fish F2 are not limited. For example, as the food to be deodorized, barbecue, fried food, homemade vegetables, bread, pickles, and the like can be mentioned.

[Embodiment 2]

The second embodiment of the present invention will be described below with reference to Figs. 1, 2, and 5. In the following description, the same components as those of the components described in the first embodiment are denoted by the same reference numerals, and their description will be omitted.

Fig. 5 is a perspective view showing a state in which the deodorizing device 10 of the second embodiment is used in the refrigerator 300.

As shown in FIG. 5, the refrigerator 300 has a deodorizing tank 302 in the refrigerating compartment 301. The deodorizing tank 302 is a box-shaped container, and the front surface switch is freely set. Further, a deodorizing device 10A is disposed in the deodorizing tank 302.

As shown in FIGS. 1 and 2, the deodorizing device 10A has the same function as the deodorizing device 10 of the first embodiment. Further, the deodorizing device 10A is configured to be small in a manner that does not occupy a limited space of the deodorizing tank 302 provided in the narrow refrigerating chamber 301, and is disposed on the back side of the deodorizing tank 302. Further, when the inside of the deodorizing tank 302 can be sealed, the deodorizing tank 302 can be filled with a sufficient amount of positive ions and negative ions. The deodorizing device 10A used in such an environment can have a lower ion generating ability than the deodorizing device 10 of Embodiment 1 in which positive ions and negative ions are diffused to a wide range, and can be downsized.

When the deodorizing target food F3 is deodorized in the refrigerating compartment 301 configured as described above, the deodorizing target food F3 is placed in the deodorizing tank 302, and the deodorizing tank 302 is placed in a sealed state. In this state, the deodorizing device 10A releases the air including the positive ions and the negative ions generated by the ion generating device 1 from the air outlet 41. Thereby, not only the positive ions and the negative ions are directly irradiated to the deodorizing target food F3, but also the deodorizing tank 302 is filled with positive ions and negative ions. Therefore, positive ions and negative ions can be sufficiently applied to the deodorizing target food F3. As a result, the odor component of the deodorizing target food F3 is reduced.

Deodorant food F3 is raw meat, fresh fish (including raw fish pieces or sashimi), sausage, ham, semi-finished food, home-cooked food, etc., and is placed on a styrene-based material such as foamed styrene. The food on the tray is displayed in the store in a state sealed by a plastic wrap. The user takes the deodorizing target food F3 home, and the like, and puts the deodorizing target food F3 in the unpacked state into the deodorizing tank 302 to deodorize it. In this way, even if the deodorizing target food F3 emits a characteristic food odor in a state where it is temporarily displayed in a shop, the odor component which is the source of the food odor can be reduced. Moreover, the odor component (styrene) attached to the tray of the deodorizing target food F3 can also be reduced together. Therefore, by deodorizing the deodorizing target food F3 as described above before cooking, it is possible to prevent the flavor of the cooking from being destroyed due to the tray odor.

Furthermore, in the present embodiment, an example in which the deodorizing tank 302 is installed in the refrigerator 300 has been described. The present invention is not limited thereto, and a deodorizing tank configured similarly to the deodorizing tank 302 may be separately provided, and the deodorizing target food F3 may be deodorized using the deodorizing tank.

[Embodiment 3]

The third embodiment of the present invention will be described below with reference to Figs. 1 and 6 . In the following description, the same components as those of the components described in the first and second embodiments are denoted by the same reference numerals, and their description will be omitted.

Fig. 6 is a perspective view showing a state of use of the deodorizing device 10B of the third embodiment in the article storage room 400.

As shown in FIG. 6, the deodorizing device 10B is attached to the ceiling of the article storage room 400, and the storage shelf 410 is provided on the floor of the article storage room 400.

As shown in Fig. 1, the deodorizing device 10B has the same function as the deodorizing device 10 of the first embodiment. Further, the operation unit 44 is not provided in the main body of the deodorizing device 10B, and is configured to be remotely operated by a remote operation machine (not shown). Moreover, the deodorizing device 10B has a housing 5. An air outlet 51 for blowing air containing positive ions and negative ions generated by the ion generating device 1 downward is provided at a lower portion of the casing 5. The air outlet 51 is not shown, but is formed in an annular shape. Further, a shutter (not shown) is provided in the air outlet 51, and by adjusting the angle of the shutter, air containing positive ions and negative ions can be diffused into a wide range of the article storage chamber 400.

The storage scaffolding 410 is provided with a scaffolding portion 411 in which a plurality of sections (two stages in the figure) are spaced apart from each other. The scaffolding portion 411 is preferably configured to have a portion that is open in the vertical direction so that the positive ions and negative ions blown from the deodorizing device 10B extend over the scaffold portion 411 of the lower stage. Specifically, the scaffolding portion 411 is preferably configured such that a structure formed in a mesh shape and a plurality of tubes are arranged in parallel.

A plurality of tray groups TG are placed on the rack portion 411 of the storage rack 410. Each tray group TG is formed by stacking a plurality of trays T3. The tray T3 is formed of a styrene-based material such as foamed styrene.

In the above-described storage environment, the deodorizing device 10B blows the air including the positive ions and the negative ions generated by the ion generating device 1 downward from the air outlet 51. Thereby, the positive ions and the negative ions are directly blown to the tray group TG placed on the storage rack 410. When the article storage chamber 400 is in a sealed state, the positive ions and negative ions released from the deodorizing device 10B are filled in the article storage chamber 400, thereby uniformly contacting the tray group TG. As a result, styrene which is an odor component emitted from each tray T3 of the tray group TG is decomposed. Therefore, since the odor of the tray T3 in the article storage room 400 is reduced, even if other articles such as clothes are stored in the article storage room 400 for convenience, the odor of the tray T3 can be prevented from being transferred to the article.

In the present embodiment, an example in which the deodorizing device 10B and the storage rack 410 are installed in the article storage room 400 has been described. However, the place where the deodorizing device 10B and the storage rack 410 are installed is not limited to the article storage room 400. For example, the deodorizing device 10B and the storage rack can also be used. 410 is placed in the container of the truck. Since the various items are stored in the container, when the tray T3 is stored in the container and transported, the deodorizing device 10B is actuated. Thus, by reducing the odor of the tray T3 in the container, the odor of the tray T3 can be prevented from being transferred to other items stored in the container.

[Embodiment 4]

The fourth embodiment of the present invention will be described below with reference to Figs. 1 and 7 to 11 . In the following description, the same components as those of the components described in the first and second embodiments are denoted by the same reference numerals, and their description will be omitted.

In the present embodiment, a test for verifying that the odor component described in the first to third embodiments is decomposed will be described.

Fig. 7(a) is a side view of the deodorizing device 10C used in the test of the fourth embodiment for verifying the deodorizing effect of the deodorizing device of the first to third embodiments, and Fig. 7(b) is the deodorizing device. 10C perspective view. Fig. 8 (a) to (d) are perspective views showing the order of production of the concentrated gas used in the above test. (a) to (d) of Fig. 9 are perspective views showing test procedures for each of the member TO1 to which the ions are applied and the member TO to be tested TO2 which does not cause ions.

In this test, as the deodorizing device 10C shown in (a) and (b) of Fig. 7, an ion generating device (A209AK) manufactured by Sharp Corporation was used.

The deodorizing device 10C includes a casing 6 that houses a substrate (not shown), a needle electrode 61 that generates positive ions by discharge, a needle electrode 62 that generates negative ions by discharge, and an external protection needle of the casing 6. The electrode protection portions 63 of the electrodes 61 and 62. The needle electrodes 61 and 62 are held on the substrate so that the front end portion protrudes outside the casing 6. The deodorizing device 10C does not include the air blowing device 2, the control unit 3, and the operation unit 44 in the deodorizing device 10 shown in Fig. 1, but is constituted only by the ion generating device 1.

The positive ion generating portion 12 shown in FIG. 1 corresponds to the needle electrode 61, and the negative ion generating portion 13 corresponds to the needle electrode 62. Further, the high voltage generating circuit 11 shown in Fig. 1 is mounted on the above substrate. needle The electrode 61 generates a positive ion by generating a corona discharge at the front end by applying a positive high voltage pulse from the high voltage generating circuit 11. The needle electrode 62 generates a negative ion at the front end by applying a negative high voltage pulse from the high voltage generating circuit 11 to generate a negative ion.

Concentrated gas was produced before the test. In the production of concentrated gas, a gas desorption device (UNITY SERIES 2 manufactured by MARKES) and an internal trap (TENAX) were used, and gas collection was carried out at a collection temperature of -15 ° C, and the desorption temperature was 250 ° C. The trapping of the trapping gas.

As shown in Fig. 8 (a), the test food F was placed in the bag B1 (100L) for gas collection, and the gas was filled in the bag to fill the bag B1, and then left to stand for 30 minutes. Then, as shown in FIG. 8(b), the gas in the bag B1 is sucked by 70 L to the two gas traps G1 for gas taking, and the volatile organic compound produced from the test food F is trapped. Then, as shown in FIG. 8(c), the gas trapping tube G1 is heated to 250 ° C, and the gas cylinder gas is introduced to about 7 L, respectively, and the trapped volatile organic compound is discharged to another bag B2. (20L). Thereby, as shown in (d) of FIG. 8, a concentrated gas having a concentration of about 10 times was produced. In addition, chickens (with sauce, 5) and fresh fish (Far East sardines, 8) were used as test food F.

Next, a test using the concentrated gas produced as described above will be described. As shown in Fig. 9(a), in the test, an "ion-containing" test piece TO1 (Test Object 1) which causes ions to act on a concentrated gas is prepared, and "no ion" which does not cause ions to act on a concentrated gas is prepared. Test object TO2 (Test Object 2). Each of the test piece TO1 and the test piece TO2 is in a state in which the deodorizing device 10C is sealed in the bag B3 (10L) for taking the gas, and the air in the bag B3 is discharged, and the bag B3 is filled with the concentrated gas. Founder. The test system is to be carried out simultaneously with the test piece TO1 and the test piece TO2.

Before the test, as shown in FIG. 9(b), in order to confirm the initial concentration, the deodorizing device 10C is turned on. Before the power supply, the gas in the bag TO of the test piece TO1 and the test piece TO2 is sucked by 1 L or 2 L to the gas trap G2 using the trap D (the above-mentioned internal trap).

As shown in (c) of FIG. 9, the power is turned on for a certain period of time while the power of the deodorizing device 10C of the device TO1 to be tested is turned on without turning on the power of the deodorizing device 10C of the device TO2 to be tested. Thereafter, as shown in FIG. 9(d), the gas in the bag B3 of each of the member TO1 to be tested and the member to be tested TO2 is sucked by 1 L or 2 L to the gas collecting tube G3. Regarding the duration of the standing state shown in (c) of Fig. 9, the roast chicken was 4 hours, and the fresh fish was 4 hours and 8 hours. In each of the test piece TO1 and the test piece TO2, the gas in the bag B3 is trapped in the gas trap G3, and qualitative analysis is performed by gas chromatography mass spectrometry.

Here, the gas chromatography mass spectrometer used for qualitative analysis and analysis conditions are as follows.

(gas chromatography mass spectrometer)

Model Name: Model 7890N/5975MSD manufactured by Agilent Technologies

Separation column: HP-1 60m × 0.25mm Film thickness 1μm

(analysis conditions)

Column temperature conditions: 40 ° C (for 5 minutes) → 5 ° C / min → 100 ° C → 10 ° C / min → 290 ° C (for 1.5 minutes)

Carrier gas: helium 1.2mL/min

Data acquisition method: SCAN mode

(The measurement results)

The measurement results are explained below. (a) to (d) of FIG. 10 are chromatograms showing the detection results of the respective compounds of the member TO1 to be tested and the member to be tested TO2, wherein the TO1 of the test piece makes the ion pair become the smell of roast chicken. In the case where the compound of the taste component acts, the TO2 to be tested does not cause the ion pair to act as a compound of the odor component of the roast chicken. Figure 11 (a) ~ (d) shows that A chromatogram of the detection results of each compound of each of the test piece TO1 and the test piece TO2, wherein the TO1 of the test piece causes the ion pair to act as a compound of the odor component of the fresh fish, and the TO2 of the test piece is not made. The ion pair acts as a compound that is a odor component of fresh fish.

(1) Roast chicken: The first measurement result

In the first test of roast chicken, regarding the TO1 of the test piece, as shown in the analysis results of Table 1 and the lower side of (a) to (c) of Fig. 10, it was confirmed that 1-penten-3-ol, two The three compounds of methyl disulfide and 1-octene-3-ol are greatly reduced. On the other hand, regarding the test piece TO2, as shown in the analysis results of Table 1 and the upper side of (a) to (c) of FIG. 10, 1-penten-3-ol, dimethyl disulfide and The three compounds of 1-octene-3-ol were slightly reduced, but were less reduced than the TO1 to be tested.

Further, regarding the test piece TO1, as shown in the analysis results of Table 2 and the lower side of FIG. 10(d), it was confirmed that the styrene was greatly reduced. On the other hand, regarding the test piece TO2, as shown in the upper side of (d) of Fig. 10, it was confirmed that styrene was only slightly reduced. The styrene reduction rate of the test piece TO1 with respect to the TO to be tested TO2 is 80% or more.

In addition, in Table 1, the "ratio of the peak area" in "TO1 0 hours later" indicates the ratio when the value of the peak area is 100%. Further, in Table 2, the "semi-quantitative value" is a value calculated from a standard substance of styrene.

(2) Roast chicken: the second measurement result

In the second test of the roast chicken, the semi-quantitative value was calculated for the compound which confirmed the reduction effect in the first test using the standard.

As shown in Table 3, in the second test, it was confirmed that the same compound as the first test was reduced, and the reproducibility was confirmed. Further, since the reduction of dimethyl trisulfide and limonene was also confirmed, the semi-quantitative value was also calculated for these compounds using a standard substance.

In addition, in Table 3, "semi-quantitative value" is a value calculated using the standard substance of each compound.

(3) Fresh fish: the first measurement result

In the first test of fresh fish, about the TO1 to be tested, if it was left for 4 hours and stood still for 8 hours. As a result of the analysis of Table 4, it was confirmed that the three compounds of 1-penten-3-ol, styrene and 1-octene-3-ol were greatly reduced. On the other hand, as for the test piece TO2, as shown in the analysis results of Table 4, the decrease of the above three compounds was hardly confirmed. Further, regarding the test piece TO1, as shown in the analysis results of Table 5, it was confirmed that the nine compounds were reduced. Fig. 11 (a) to (d) respectively show methyl mercaptan acetate, 2-ethylfuran, 2-penten-1-ol and 1-octene in the compounds after standing for 8 hours. The measurement result of TO1 (lower section) of the test piece of 3-alcohol and TO2 (upper section) of the test piece.

(4) Fresh fish: the second measurement result

In the second test of fresh fish, the semi-quantitative value was calculated by subtracting the compound marked with a circle in the compound shown in Table 5 in the first test of fresh fish using the standard substance.

As shown in Table 6, in the second test, it was confirmed that the same test compound TO1 as the first test had a large decrease in the number of compounds, and the reproducibility was confirmed. On the other hand, regarding the member TO2 to be tested, it was confirmed that the compounds were hardly reduced, or only slightly decreased.

(summary of the test)

In the above test, the composition of the TO1 to be tested, which was produced by roast chicken and fresh fish, was greatly reduced after standing for a certain period of time, and the effect of reduction was confirmed. It was confirmed that the reduced compound contained a compound having a structure having an unsaturated bond and a sulfide. These compounds are considered to have a characteristic odor. In particular, 1-penten-3-ol is known as a cause of odor, and the fresh fish used in this test is detected at a high concentration, so it is considered to contribute to the unique smell of fish. taste. With the reduction of these components, a decrease in odor or a change in odor is predicted in the TO to be tested TO1. Table 7 shows an example of the odor of the compound in which the decrease in the above components was confirmed.

In addition, in the case of roast chicken, it was confirmed that it was decomposed in the case of roast chicken for 4 hours, and in the case of fresh fish, it was decomposed in 4 hours and 8 hours of standing maintenance time. On the other hand, it was confirmed that the flavor component (alcohol-based and aldehyde-based) was not decomposed under the above-described standing maintenance time. Examples of such a flavor component include ethyl acetate (having a flavor similar to pineapple), isovaleraldehyde (aroma component of fruit and wine), acetoin (one of substances added to butter), and n-valeraldehyde ( Aroma components of fruit and wine), ethyl lactate (similar to nuts, dairy products, fruit flavor). These flavor components all contain a double bond of carbon and oxygen, but do not contain a double bond of carbon.

Further, although the acrolein shown in Tables 6 and 7 has an aldehyde group, it is an unsaturated aldehyde having a double bond of carbon and cannot be called a flavor component.

〔to sum up〕

The deodorizing method of the aspect 1 of the present invention includes a positive-negative ion irradiation step, that is, a carbon double bond and an unsaturated component in the odor component contained in the food (baked chicken F1, fresh fish F2, deodorized food F3) The substance and sulfide of the bond are decomposed, and the food is irradiated with positive ions and negative ions.

According to the above method, radicals are generated from the irradiated positive ions and negative ions. It is presumed that by the action of the positive ions and the negative ions and the free radicals, substances and sulfides having carbon double bonds and unsaturated bonds, which are particularly susceptible to bugs such as flies, are decomposed. Therefore, by preventing the spread of the odor of the food, it is possible to prevent the worm from being attracted to the food and to maintain the hygienic state of the food well.

The deodorizing method of the aspect 2 of the present invention includes a positive-negative ion irradiation step, that is, a food (boiler T1 to T3) or a food contact with the container (baked chicken F1, fresh fish F2, deodorized food F3) The styrene in the odor-containing component is decomposed, and the container or the food is irradiated with positive ions and negative ions.

According to the above method, radicals are generated from the irradiated positive ions and negative ions. It is presumed that styrene is decomposed by the action of the positive ions and negative ions and radicals. Therefore, the styrene odor which easily destroys the flavor of the food or gives an unpleasant feeling can be removed from the container or the food.

In the aspect 3 of the present invention, in the above aspect 1 or 2, the positive ion may be an ion mainly composed of H ⁺ (H ₂ O) _n (n is a natural number), and the negative ion is An ion mainly composed of O ₂ ^- (H ₂ O) _m (m is a natural number).

According to the above method, a hydroxyl radical as a reactive oxygen species is formed from H ⁺ (H ₂ O) _m and O ₂ ^- (H ₂ O) _n .

In the deodorizing method of the aspect 4 of the present invention, in any one of the above aspects 1 to 3, the food may be displayed in a food market in a state of being exposed to the outside atmosphere.

According to the above configuration, it is possible to prevent the bug from being attracted to the food store where the food is displayed in a state of being exposed to the outside atmosphere. Therefore, the hygienic state of the food store can be well maintained.

The deodorizing method of the aspect 5 of the present invention may further comprise, in any of the above aspects 1 to 4, a deodorizing object (baked chicken F1, fresh fish F2) which is blown and contains an odor component to be decomposed. And the method of blowing the air flow by the method of deodorizing the food F3 and the trays T1 to T3), wherein the positive and negative ion irradiation step is performed simultaneously with the air blowing step, and in the positive and negative ion irradiation step, relative to the deodorizing object Positive ions and negative ions are generated on the wind side above the air flow of the object.

According to the above method, since the positive ions and the negative ions generated on the windward side flow down to the wind side, they diffuse more uniformly. Therefore, by diffusing the positive ions and the negative ions to the deodorizing object, the positive ions and the negative ions can be uniformly irradiated to the plurality of deodorizing objects.

The deodorizing device of the aspect 6 of the present invention includes an ion generating device 1 which has a carbon double bond and an unsaturated bond in the odor component contained in the food (baked chicken F1, fresh fish F2, and deodorized food F3). The substance and the sulfide are decomposed to generate positive ions and negative ions supplied to the food.

According to the above configuration, similarly to the deodorizing method of the above-described aspect 1, the insect can be prevented from being attracted to the food, and the hygienic state of the food can be favorably maintained.

The deodorizing apparatus according to Aspect 7 of the present invention includes an ion generating apparatus 1 which is included in a container (tray T1 to T3) or a food (baked chicken F1, fresh fish F2, deodorized food F3) which has been in contact with the container. The styrene in the odor component is decomposed to generate positive ions and negative ions supplied to the container or the food.

According to the above configuration, in the same manner as the deodorizing method of the above-described aspect 2, the styrene odor which easily deteriorates the flavor of the food or gives a feeling of discomfort to the person can be removed from the container or the food.

In the aspect 8 of the present invention, in the above aspect 6 or 7, the positive ion may be an ion mainly composed of H ⁺ (H ₂ O) _n (n is a natural number), and the negative ion is An ion mainly composed of O ₂ ^- (H ₂ O) _m (m is a natural number).

According to the above configuration, hydroxyl radicals which are active oxygen species are generated from H ⁺ (H ₂ O) _m and O ₂ ^- (H ₂ O) _n .

[Notes]

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. The embodiments obtained by appropriately combining the technical methods disclosed in the different embodiments are also included in the technical scope of the present invention. Further, by combining the technical methods disclosed in the respective embodiments, new technical features can be formed.

Claims (8)

A deodorizing method comprising a positive-negative ion irradiation step of decomposing a substance having a carbon double bond and an unsaturated bond and a sulfide in an odor component contained in a food, and disposing the substance in the open space The food directly illuminates positive ions and negative ions. A deodorizing method comprising a positive-negative ion irradiation step of decomposing styrene in a odor component contained in a container or a food contacted with the container, and disposing the styrene disposed in an open space or the above The food directly illuminates positive ions and negative ions. The deodorizing method according to claim 1 or 2, wherein the positive ion is an ion mainly composed of H ⁺ (H ₂ O) _n (n is a natural number), and the negative ion is O ₂ ^- (H ₂ O) _m ( m is a natural number) is the main ion. The deodorizing method according to claim 1 or 2, wherein the food is displayed in a food store in a state of being exposed to the outside atmosphere. The deodorizing method according to claim 1 or 2, further comprising a blowing step of generating an air flow in a manner of blowing a deodorizing object containing the odor component to be decomposed, wherein the positive and negative ion irradiation step is performed simultaneously with the air blowing step. In the positive/negative ion irradiation step, positive ions and negative ions are generated on the wind side of the air flow with respect to the deodorizing object. A deodorizing device comprising an ion generating device for decomposing substances and sulfides having carbon double bonds and unsaturated bonds among odor components contained in foods, and supplying them to an open state The positive ions and negative ions of the above food in the space, and directly irradiate the above food. A deodorizing device comprising an ion generating device for decomposing styrene in a odor component contained in a container or a food contacted with the container, and supplying the styrene to the open space Positive ions and negative ions of the container or the above food, and directly irradiate the above container or the above food. The deodorizing device according to claim 6 or 7, wherein the positive ion is an ion mainly composed of H ⁺ (H ₂ O) _n (n is a natural number), and the negative ion is O ₂ ^- (H ₂ O) _m ( m is a natural number) is the main ion.