KR102411426B1 - Transportation box and distributing method using it thereof - Google Patents

Abstract

The present invention relates to a transport and delivery container and a method for distributing agricultural and livestock products using the same. a thermoelectric element installed in the housing and comprising a cooling unit generating cooling heat toward the inside of the housing and a warming unit discharging heat through the heat exchanger; a latent heat material provided in the cooling unit to store heat from the cooling unit; And it is provided on the outside of the housing, the plasma device for forming a plasma by using the electric power produced by the thermoelectric element; By including, it is possible to keep agricultural and livestock products in a fresh state for a long time.

Description

Transportation box and distribution method using the same {Transportation box and distributing method using it thereof}

The present invention relates to a transport and delivery container capable of storing agricultural and livestock products in a fresh state for a long time, and to a distribution method for agricultural and livestock products using the same.

Recently, the need for fresh distribution of meat, seafood, fresh vegetables and fruits at low temperature is increasing day by day. In particular, in order to keep food at a low temperature, refrigerated vehicles, cold storage warehouses for freezing and refrigeration, and freezing boxes for small packaging are required, so the industry related to the cold chain system is also continuously growing.

However, unlike the external growth of the distribution industry, the cold chain system is still in the introduction stage, and it is focused on cold storage in the production area and show-cases that can be accessed at the consumer level, refrigeration, refrigerator, or delivery type ice packs for businesses. .

Meat is sensitive to temperature among the objects of low-temperature distribution, and when an ice box is used, the period during which meat can be transported and delivered in a fresh state (referring to horses with reduced transport and delivery) is short and can be easily spoiled.

In addition, when meat is transported using a truck equipped with a freezer/refrigerator, there is a problem in that too much power is consumed to operate the freezer/refrigerator, as well as other freezing/refrigeration facilities after taking the meat out of the freezer/refrigerator. If meat is left at room temperature during the process of moving it to the oven, there is a problem of deterioration or deterioration of quality.

On the other hand, conventionally, a technique using a thermoelectric element for refrigeration or freezing is known. Here, the thermoelectric element is a metal element composed of a p-type semiconductor and an n-type semiconductor, and refers to a device that generates Peltier heat absorption and heat dissipation, which is one of the thermoelectric effects, by flowing a direct current, Korean Patent Laid-Open No. 10-2007-0102189 discloses a refrigerator to which a thermoelectric element is applied.

Referring to the prior invention, the case is inserted into the storage compartment of the refrigerator, and the case is composed of an inner case and an outer case. A cooling storage space is formed between the inner case and the outer case, and the cooling material is accommodated in the cooling storage space. The cold air generated by the thermoelectric element is blown into the inner case by a fan, and even if the case is removed and placed outdoors, the cold air is emitted from the cooling material, so the contents can be kept fresh for a certain period of time. .

However, the thermoelectric element operates only when power is supplied from the refrigerator, and the thermoelectric element does not operate at all when the case is removed and placed outdoors. After all, in a state in which the case is placed outdoors, this prior invention, unlike the conventional ice box, functions only up to the limit time during which the heat storage material can discharge cold air, and then the function deteriorates. In addition, in the case of using the commercial heat storage material developed so far, there is a limit that the freshness of the contents cannot be maintained for even 20 hours in a state in which the case is separated from the prior invention and placed outdoors.

Therefore, it is possible to drive even if power is not supplied, and there is a need for a transport container that can maintain the transport container and the agricultural and livestock products themselves in a low temperature state for a long time.

Republic of Korea Patent Publication No. 2007-0102189 Republic of Korea Patent Publication No. 2011-0045322 Republic of Korea Patent No. 0533234 Republic of Korea Patent No. 0707276

An object of the present invention is to provide a transport container that can be driven without power supply and can keep agricultural and livestock products fresh for a long time in a low temperature state.

In addition, another object of the present invention is to provide a method for distribution of agricultural and livestock products using the transport and delivery container.

The transport container of the present invention for achieving the above object has an inner space in which agricultural and livestock products are provided, a housing in which a door for opening and closing the space is installed; a cooling plate provided on the inner upper side of the housing and accommodating a plurality of latent heat materials; a thermoelectric element provided through the upper portion of the housing and having a lower surface in contact with an upper surface of the cooling plate to generate electric power while dissipating heat accumulated in the latent heat material and the cooling plate to the outside; and a plasma device that is provided outside the housing and generates plasma by using the electric power generated by the thermoelectric element.

The plasma apparatus may generate plasma such that ozone of 0.05 to 0.2 g/h is generated based on the ozone concentration.

The plasma may be generated for 50 to 70 seconds per hour.

The discharge gas used to generate the plasma may be air.

The flow rate of the discharge gas may be 15000 to 25000 SCCM.

The transport container may be provided with an external blower fan installed on one side of the housing to exchange heat with the outside air.

The cooling plate may include an upper plate and a lower plate to be spaced apart in parallel from each other, and the upper plate and the lower plate may be connected to each other through a plurality of partition walls.

The latent heat material may be loaded into a space formed between the upper plate and the lower plate.

A convection chamber having a space therein is provided under the cooling plate,

The convection chamber may include one or more intake fans provided in the lower portion, and one or more air supply ports disposed at a distance from the intake fans.

A nozzle connected to the plasma device may be provided on an inner lower surface of the housing to emit plasma into the housing.

A rechargeable battery may be embedded in the housing.

The inner space of the transport container and the central temperature of the agricultural and livestock products may be maintained at any one temperature of 2 to 8 ℃, respectively.

The agricultural and livestock products may include at least one selected from the group consisting of meat, seafood, fresh vegetables and fruits.

In addition, the agricultural and livestock distribution method of the present invention for achieving the above other object comprises the steps of (A) putting the agricultural and livestock products into the transport container; (B) generating electric power while dissipating heat to the outside through a thermoelectric element provided in the transport container; and (C) generating plasma through a plasma device provided in the transport container using the generated power.

Plasma may be generated using a rechargeable battery built in the transport container.

Steps (B) and (C) may be performed simultaneously or sequentially.

Since the transport container of the present invention maintains the inside of the transport container and the central temperature of the agricultural and livestock products at a preset low temperature even while transporting the agricultural and livestock products, it can maintain a fresh state for a long time.

In addition, since the transport container of the present invention uses a passive module (latent heat material) that does not use electric power, and can drive the plasma device with only a small amount of power generated from the thermoelectric element, a separate power supply is not required.

1 is a perspective view of a transport container according to an embodiment of the present invention.
FIG. 2 is a front view of a state in which the door of the transport container of FIG. 1 is opened.
3 is a perspective view illustrating a convection chamber, a thermoelectric element, and a heat exchanger in the transport container of FIG. 1 .

The present invention relates to a transport and delivery container capable of storing agricultural and livestock products in a fresh state for a long time, and to a distribution method for agricultural and livestock products using the same.

Since the transport container of the present invention uses a latent heat material, not only the internal space of the transport container is maintained at a low temperature, but also the internal space of the transport container and the central temperature of the agricultural and livestock products can be constantly maintained at a low temperature due to plasma. It stays fresh for a long time without deterioration.

In addition, a thermoelectric element (a device using the Seebeck effect, a phenomenon in which electromotive force is generated by a temperature difference) produces a small amount of power by the difference between the external and internal temperatures, and the generated power is used in the plasma device to generate plasma. By producing, livestock products such as meat can be distributed under a low temperature condition without a separate power supply. Specifically, since the latent heat material is used, no power is required to maintain the internal temperature of the transport container, and the power supplied to the plasma device is sufficient even with a small amount of self-generated power, so that it can be stored for a long time without power.

Hereinafter, the present invention will be described in detail.

1 is a perspective view of a transport container according to an embodiment of the present invention, FIG. 2 is a front view of the transport container of FIG. 1 in an open state, and FIG. 3 is a convection chamber in the transport container of FIG. It is a perspective view showing a thermoelectric element and a heat exchanger.

1 to 3, the transport container 100 of the present invention has an inner space in which agricultural and livestock products are provided, and a housing 104 in which a door for opening and closing the space is installed; a cooling plate 116 provided on the inner upper side of the housing and accommodating a plurality of latent heat materials; a thermoelectric element 130 provided through the upper portion of the housing and having a lower surface in contact with an upper surface of the cooling plate to generate power while dissipating heat accumulated in the latent heat material and the cooling plate to the outside; and a plasma device 140 provided outside or inside the housing and generating plasma using the electric power generated by the thermoelectric element. In this case, the plasma device 140 is provided outside the housing as shown in FIG. 1 .

The housing 104 is a body constituting the transport container 100 , is formed in a frame structure with an open front, and has a predetermined internal space. Although agricultural and livestock products are stored in the inner space, all food products may be stored without being limited to agricultural and livestock products. The agricultural and livestock products may include at least one selected from the group consisting of meat, seafood, fresh vegetables and fruits; Examples of the food may include foods requiring freshness, such as beverages and ice cream, in addition to meat, vegetables, and seafood.

In addition, the transport container 100 is provided with a plate-shaped door 106 that covers and seals the front surface of the housing 104 .

The door 106 is preferably installed rotatably about one side on one side of the transport container 100 , but this is only an embodiment, and if the structure is for sealing the transport container 100 , the door There are no special restrictions on the structure of

In addition, the door 106 is preferably fastened to one side of the transport container 100 in order to seal the transport container 100. In this case, the door 106 and the transport container 100 are not fastened to each other. Possible fastening means (not shown) is provided. Here, as the fastening method of the fastening means, various methods such as a tightening method, a magnet method, or a combination of a tightening method and a magnet method may be applied. In addition, a handle 108 may be installed on the door 106 to easily open and close the door, but this is only an exemplary embodiment, and there is no particular limitation as long as it has a structure capable of opening and closing the door 106 .

On the other hand, the door 106 is formed in a cover type without a special fastening means to cover the opening of the transport container 100 is also possible.

The cooling plate 116 includes an upper plate 116 ′ and a lower plate 116 ″, and the upper plate 116 ′ and the lower plate 116 ″ are connected by a plurality of partition walls 118 . A latent heat material hole 128 is formed by the partition wall 118 to accommodate a plurality of identical or different latent heat materials 126 .

In addition, the cooling plate 116 is preferably installed on the upper side of the inside of the housing 104 to facilitate convection of the cold air having a relatively high density to the lower side.

In addition, the cooling plate 116 may be made of a plastic material, a ceramic material, or a metal material having a high heat transfer rate so that heat transfer can be smoothly achieved.

The latent heat material 126 (phase change material, PCM) is a material that causes a phase change at the same temperature or at different temperatures, and specifically, has a characteristic of accumulating predetermined thermal energy or emitting accumulated thermal energy through a phase change process. . In addition, the latent heat material has a characteristic that the state (solid, liquid, gas) variously change according to the phase change.

As the latent heat material, a latent heat material in which a phase change occurs when the internal temperature of the transport container 100 is set to 0 ° C., a latent heat material in which a phase change occurs when the internal temperature of the transport container 100 is set to 5 ° C., water When the internal temperature of the delivery container 100 is set to 10° C., latent heat materials that undergo a phase change may be used individually or together. However, this is only an example, and since a latent heat material having a phase change occurring at a temperature other than the above temperatures may be used, the temperature is not limited thereto.

The latent heat material 126 may be used by being waterproof coated or filled in a waterproof pack, box, tube, or the like, because of moisture that may be generated when heat is absorbed.

The lower plate 116 ″ of the cooling plate may be provided with a plurality of ventilation holes so that the latent heat material accommodated can easily come into contact with the air inside the transport container 100 . The latent heat material may be easily contacted with the internal air through the ventilation hole to perform heat exchange.

The thermoelectric element 130 is provided on the upper side of the upper plate 116 ′ and is provided to penetrate through the upper frame of the housing 104 .

The thermoelectric element 130 includes a heat absorbing part 132 and a heat generating part 134 , and the heat absorbing part 132 is provided to face the inside of the housing 104 , and an upper plate 116 of the cooling plate is provided. `) is provided to be in contact with. In addition, the heating part 134 is disposed to face the outside of the housing 104 and is provided on the upper surface of the housing 104 . Accordingly, the heat absorbing part 132 easily absorbs the heat exchanged by the cooling plate 116 through the upper surface of the upper plate 132 , and the heat generating part 134 discharges the absorbed heat to the outside.

Since the heat generating unit 134 may rise to a high temperature due to the discharged heat, the heat dissipation efficiency may be lowered. do. In addition, the external blowing fan may be casing (casing) to prevent damage.

In particular, the thermoelectric element 130 generates electric power while emitting the heat exchanged by the cooling plate 116 to the outside. Specifically, the thermoelectric element 130 generates a small amount of power by the difference between the temperature of the heat absorbed by the heat absorbing part 132 and the external temperature. For example, when the temperature of the inner space of the transport container 100 is 2 ° C, the temperature of the absorbed heat is slightly higher than 2 ° C. As the difference occurs, power is produced accordingly.

The convection chamber 120 is preferably provided under the lower plate 116 ″ to convection the cooling heat generated from the cooling plate 116 into the inner space of the housing 104 .

The convection chamber 120 has a space therein, and at least one intake fan 122 is formed on a lower surface facing the inner space of the housing 104 , and at least one air inlet 124 is spaced apart from the intake fan 122 . ) is formed. For example, the intake fans 122 are arranged in a line on the lower surface of the convection chamber 120 in the width direction, and the air supply ports 124 are arranged in a line on both sides of the lower surface of the convection chamber 120 . Accordingly, the internal air of the housing 104 is forcibly sucked into the convection chamber 120 by the intake fan 122 , and the air cooled by the cooling heat transferred from the cooling plate 116 is again supplied to the supply port 124 . ) and descends as it is discharged through the Since the cooled air is relatively denser than the surrounding air, convection occurs in the same direction as the arrow shown in FIG. 2 .

The plasma device 140 is provided outside the housing 104 and receives power from the thermoelectric element 130 or a separately provided rechargeable battery to emit plasma.

The plasma device 140 is provided outside the housing 104 and may be located anywhere as long as it is connected to the housing 104 . Moreover, it is preferable to provide the plasma nozzle 144 to protrude from the inner surface of the housing 104 so that the plasma generated in the plasma apparatus 140 can be moved according to the flow of convection. Since the plasma ejected through the plasma nozzle 144 moves with the flow of convection, it may be evenly distributed inside the housing 104 . The number of the plasma nozzles 144 is not particularly limited, but may preferably be 3 to 7 pieces.

When the plasma nozzle is provided on the upper side of the housing, plasma is not evenly distributed.

The electrode used in the plasma device 140 is not particularly limited as long as it is an electrode capable of generating plasma, such as a dielectric barrier discharge (DBD), a radio frequency discharge (RF), or a corona discharge (CD).

Materials generated when the plasma is generated include NOx, HNO ₂ , HNO ₃ , H ₂ O ₂ , O ₃ , OH ⁻ , and various radicals. In the present invention, based on the ozone concentration among the substances, 0.05 to 0.2 g/h , the plasma is emitted so that ozone of preferably 0.1 to 0.15 g/h is produced. If the ozone concentration is less than the lower limit, the central temperature of the agricultural and livestock products cannot be maintained at a desired temperature, and if it exceeds the upper limit, the agricultural and livestock products may be easily deteriorated and the functionality may be reduced.

In addition, the plasma device 140 is operated only for 50 to 70 seconds per hour to generate plasma. If the time the plasma is operated is less than the lower limit, the central temperature of the agricultural and livestock products may not be maintained at a temperature similar to the set housing 104 internal temperature, and if it exceeds the upper limit, the internal temperature and the central temperature of the agricultural and livestock products are constant It cannot be maintained and a temperature deviation may occur.

As described above, since the plasma device 140 only needs to be operated for a short time, it is possible to sufficiently operate only with the power generated by the thermoelectric element 130 without receiving external power.

In addition, the plasma intensity generated by the plasma device 140 is 1 to 10 W/cm ² , preferably 1 to 5 W/cm ² , based on the intensity generated from the electrode surface. If the plasma intensity is less than the lower limit, the internal temperature and the central temperature of the agricultural and livestock products may not be kept constant and a temperature deviation may occur, and if it exceeds the upper limit, it may not be economically efficient and high heat may be generated.

In addition, the discharge gas used in the plasma device 140 is preferably air, and the flow rate of the discharge gas is 15000 to 25000 SCCM. When the flow rate of the discharge gas is less than the lower limit, it cannot be used in the present invention because plasma must be generated for a long time, and when it exceeds the upper limit, it is not economically efficient.

A control unit 110 is installed in the transport container 100 of the present invention, and the control unit 110 may be installed outside or inside the housing 104 , or outside the door 106 .

In addition, a thermometer is installed inside the housing 104 to measure the temperature inside the housing 104 , and the control unit 110 compares the measured temperature with a set temperature to operate or operate the thermoelectric element. to block

In addition, when a rechargeable battery is embedded in one side of the housing 104 and the amount of power produced by the thermoelectric element is insignificant, the plasma device 140 is driven using the electric power of the rechargeable battery, and the thermoelectric element 130 frequently generates it. power can be collected.

When the agricultural and livestock products are stored in the transport container 100 configured as described above, the temperature of the inner space of the transport container 100 and the central temperature of the agricultural and livestock products is maintained at any one of 2 to 8 ° C.

In addition, the present invention provides a method for distributing agricultural and livestock products using the transport and delivery container.

The agricultural and livestock distribution method of the present invention comprises the steps of (A) putting agricultural and livestock products into the transport container; (B) generating electric power while dissipating heat to the outside through a thermoelectric element provided in the transport container; and (C) generating plasma through a plasma device provided in the transport container using the electric power.

First, the temperature information of the inner space of the transport container is periodically received from the thermometer and displayed on the control unit, and when the temperature displayed on the control unit is compared with the set temperature and is higher than the set temperature, the control unit blows internally using the power of the rechargeable battery Start the fan and external blower fan. In addition, when the temperature displayed on the control unit is compared with the set temperature and is lower than the set temperature, the control unit stops the operation of the internal blowing fan and the external blowing fan. On the other hand, the thermoelectric element produces a small amount of power by the difference between the internal temperature and the external temperature of the transport container.

As described above, when the internal temperature of the transport container is set to a set temperature, the agricultural and livestock products packaged in the transport container are put in, and then plasma is generated through a plasma device using the electric power generated by the thermoelectric element.

For example, the thermoelectric element may generate power and drive the plasma device at the same time. In this case, when the amount of power generated by the thermoelectric element is insufficient to drive the plasma device, power charged in the rechargeable battery may be used.

As another example, after the thermoelectric element generates electric power, the plasma apparatus may be driven using the same. In this case, the plasma apparatus is driven using the electric power charged in the rechargeable battery.

The power charged in the rechargeable battery may be power generated by a thermoelectric element or power previously charged externally.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, It goes without saying that such variations and modifications fall within the scope of the appended claims.

control group.

Packed in an EPS box, which is a regular ice box. A beef sirloin (thickness of 1 cm) was added.

Example 1. 2℃

Plasma was generated after putting the packaged beef sirloin (1 cm in thickness) into the transport container (set internal temperature of 2 ° C) including the housing, thermoelectric element, plasma device, latent heat material and cooling plate, as described above. . At this time, the plasma is generated so that 0.1 g/h of ozone is generated based on the ozone concentration, and when the experiment is performed for 9 days by setting it to operate for 1 minute per hour, plasma containing 0.36 g of ozone is generated.

Example 2. 5℃

It was carried out in the same manner as in Example 1, but the internal temperature of the transport container was set to 5 °C.

comparative example 1. 2℃

It was carried out in the same manner as in Example 1, but no plasma was generated.

comparative example 1. 5℃

It was carried out in the same manner as in Example 2, but no plasma was generated.

<Test Example>

Test Example 1. Temperature measurement

The temperature was measured using a Termo Recorder (TR-52, T&D Co., Japan) to measure the temperature change, and for the measurement sites, the latent heat material, the inside of the shipping container, and the center of the beef were measured, respectively. The beef center means a middle portion of the thickness while being in the middle of the horizontal and vertical directions. For example, the center of 1 X 1 X 1 cm ³ beef is 0.5 cm in the horizontal direction and 0.5 cm in the vertical direction, and the length is 0.5 cm.

division day 0 2 5 9 2 ℃ control latent material 4.6 18.2 24.1 28.1 inside the container 16.5 20.8 25.6 30.2 beef core 10.4 17.1 24.5 28.5 Example 1 latent material -1.4 -1.3 -2.0 -2.7 inside the container 0.7 0.8 1.9 2.4 beef core 2.2 2.5 2.4 2.5 Comparative Example 1 latent material 0.3 0.7 0.9 1.1 inside the container 0.7 0.7 2.8 4.0 beef core 2.8 3.5 3.9 4.8 5 ℃ control latent material One 17.0 22.4 25.6 inside the container 18.2 20.9 23.8 28.4 beef core 11.6 19.3 22.9 27.1 Example 2 latent material 2.0 2.0 2.1 2.1 inside the container 5.0 5.1 4.5 4.8 beef core 5.2 5.5 5.4 5.6 Comparative Example 2 latent material 2.0 4.1 4.5 4.9 inside the container 5.2 7.6 6.8 7.2 beef core 5.4 7.4 6.6 7.0

As shown in Table 1 above, it was confirmed that the center temperature of the beef stored in the container and inside the transport and delivery containers of Examples 1 and 2 of the present invention maintains the set temperature for a long time.

On the other hand, in the control group, Comparative Examples 1 and 2, it was confirmed that the central temperature of the beef stored in the container and inside the transport container rapidly increased as time passed.

test example 2. pH, VBN , TBA measurement

2-1. pH: 10 g of beef and 20 ml of distilled water were homogenized and measured repeatedly three times using a pH meter.

2-2. VBN (volatile basic nitrogen, mg%, standard: 15.0 mg% or less): After adjusting the volume to 50 ml with distilled water to 5 g of beef, homogenize with a homogenizer, and then filter with filter paper (Whatman No. 1). Put 1 ml of the filtrate on the left side of the outer chamber of the conway dish, put 1 ml of 0.005 mol-H ₂ SO ₄ into the inner chamber, and then add 1 ml of the saturated solution K ₂ CO ₃ solution on the right side of the outer chamber. The filtrate and K ₂ CO ₃ solution are mixed well and then reacted at 25 °C for 60 minutes. After the reaction, the inner chamber was colored with Brunswik's reagent and titrated with 0.01N NaOH.

2-3. TBA (fat rancidity, mgMA/kg, standard: 0.4 mgMA/kg or less): After grinding beef, take 10 g, add 0.5 ml of 0.3% BHA, add 25 ml of 20% TCA solution, homogenize with a homogenizer, and then 50 ml with distilled water Adjust it so that it becomes After filtration using filter paper (Whatmain No1), 5 ml of the filtrate and 5 ml of TBA (5 mM thiobarbituric acid) solution were added, mixed, and left in a cool and dark place for 15 hours, and absorbance was measured at 530 nm.

division day 0 2 5 9 2 ℃ control pH 5.25 5.51 - - VBN 6.98 8.11 - - TBA 0.1350 0.6231 - - Example 1 pH 5.25 5.40 5.34 5.53 VBN 6.98 7.44 7.36 9.03 TBA 0.1350 0.2515 0.3354 0.5339 Comparative Example 1 pH 5.25 5.41 5.70 5.71 VBN 6.98 7.37 9.20 11.45 TBA 0.1350 0.2300 0.9123 1.1211 5 ℃ control pH 5.63 5.78 - - VBN 7.20 11.53 - - TBA 0.1940 1.1542 - - Example 2 pH 5.63 5.58 5.58 6.00 VBN 7.20 7.90 8.08 13.76 TBA 0.1940 0.2572 0.3451 1.2000 Comparative Example 2 pH 5.63 5.58 5.94 - VBN 7.20 7.50 15.02 - TBA 0.1940 0.3612 1.7396 -

As shown in Table 2 above, the beef stored in the transport container of Example 1 of the present invention showed little change in pH, and the VBN satisfies the standard value until 9 days. However, it was confirmed that the TBA deviates from the baseline on the 9th day.

On the other hand, the control at 2 ℃ decayed from about 4 days, VBN and TBA could not be measured, Comparative Example 1 confirmed that all values were higher than in Example 1.

In addition, the beef stored in the transport container of Example 2 of the present invention had little change in pH, and the VBN satisfies the standard value until 9 days. However, it was confirmed that the TBA deviates from the standard value after 5 days.

On the other hand, at 5 ° C., the control was decomposed from around day 4 and could not measure VBN and TBA, and Comparative Example 2 was also decomposed from day 6 and could not measure VBN and TBA.

test example 3. Microbial and gravy loss

3-1. Microorganisms (log CFU/ml): To measure the total number of bacteria, the surface of beef was rubbed a certain number of times using Swab (3M Pipette Swab), and then diluted in stages to measure the total number of bacteria (Petri film. 3M Co. Ltd., CA, USA) was inoculated and cultured at 37 °C, and expressed as log CFU/ml.

3-2. Loss of juice (%): It was calculated by measuring the weight before and after irradiation.

division day 0 2 5 9 2 ℃ control microbe 1.55 4.63 - - loss of juice 0.78 1.45 - - Example 1 microbe 1.55 1.79 1.85 5.92 loss of juice 0.78 1.00 1.02 1.19 Comparative Example 1 microbe 1.55 1.99 7.09 7.11 loss of juice 0.78 1.14 1.34 1.68 5 ℃ control microbe 3.47 7.03 - - loss of juice 0.64 1.44 - - Example 2 microbe 3.47 3.85 4.08 6.89 loss of juice 0.64 0.69 0.91 1.76 Comparative Example 2 microbe 3.47 3.85 7.67 - loss of juice 0.64 0.75 1.78 -

As shown in Table 3 above, it was confirmed that the beef stored in the transport containers of Examples 1 and 2 of the present invention not only proliferated less microorganisms but also reduced the amount of juice loss compared to the control and Comparative Example 1.

On the other hand, it was confirmed that the control at 2 ℃ rot from about 4 days, Comparative Example 1, a lot of microorganisms and loss of juice.

In addition, the control at 5 ℃ also decayed from about 4 days, Comparative Example 2 also decayed from about the 6th day, so the loss of microorganisms and juice was not measured.

test example 4. Chromaticity measurement

The chromaticity of the beef stored in Examples and Comparative Examples (spectrophotometer CM-700d, Konica minolta, Japan) was measured three times, and the average value thereof is shown in [Table 4] below.

division day 0 2 5 9 2 ℃ control L 39.77 43.37 - - a 32.60 24.16 - - b 15.31 14.03 - - Example 1 L 39.77 42.97 41.74 48.57 a 32.60 27.89 26.88 20.34 b 15.31 14.69 14.33 13.53 Comparative Example 1 L 39.77 40.24 43.36 43.42 a 32.60 29.17 18.63 18.32 b 15.31 15.08 12.40 12.26 5 ℃ control L 41.94 38.46 - - a 28.10 17.74 - - b 15.00 10.51 - - Example 2 L 41.94 43.06 40.01 42.13 a 28.10 24.31 25.52 21.13 b 15.00 13.74 13.41 13.24 Comparative Example 2 L 41.94 41.83 40.16 - a 28.10 25.28 16.30 - b 15.00 14.17 12.19 -

As shown in Table 4 above, the beef stored in the transport container of Example 1 of the present invention has the least change in the L value indicating the brightness and the a value indicating the redness with the passage of time compared to the control and Comparative Example 1 confirmed that.

In addition, it was confirmed that the beef stored in the transport container of Example 2 of the present invention also showed the least change in the L value indicating the brightness and the a value indicating the redness with the passage of time compared to the control and Comparative Example 2.

test example 5. Sensory Test

15 expert panelists were selected and the appearance, meat color (bright red), fat color (milky white), off-flavor, juiciness, and overall preference of beef stored in Examples and Comparative Examples were evaluated using a 9-point scale to obtain the average value, and the average value was obtained from the following [Table] 5].

-Appearance, flesh color (bright red), fat color (milky white), off-flavor, juiciness and overall palatability: 1 = very bad, 9 points = very good

In cases where corruption was too severe, sensuality was not evaluated.

division day 0 2 5 9 2 ℃ control Exterior 9.0 6.4 - - six colors 9.0 6.1 - - fat color 9.0 6.5 - - off-flavor 9.0 6.3 - - succulent 9.0 7.1 - - overall sign 9.0 6.3 - - Example 1 Exterior 9.0 7.9 7.7 3.2 six colors 9.0 8.0 7.7 3.0 fat color 9.0 7.6 8.0 3.7 off-flavor 9.0 8.0 8.3 2.6 succulent 9.0 7.9 7.8 4.3 overall sign 9.0 7.8 7.6 3.0 Comparative Example 1 Exterior 9.0 7.9 4.0 - six colors 9.0 7.9 3.4 - fat color 9.0 8.0 3.8 - off-flavor 9.0 8.0 2.9 - succulent 9.0 8.0 4.1 - overall sign 9.0 8.1 2.8 - 5 ℃ control Exterior 9.0 3.7 - - six colors 9.0 3.7 - - fat color 9.0 4.4 - - off-flavor 9.0 3.4 - - succulent 9.0 5.4 - - overall sign 9.0 3.1 - - Example 2 Exterior 9.0 8.3 6.7 2.6 six colors 9.0 8.3 6.6 2.6 fat color 9.0 8.0 6.9 3.1 off-flavor 9.0 8.4 6.7 2.3 succulent 9.0 8.5 6.8 4.4 overall sign 9.0 8.4 6.4 2.2 Comparative Example 2 Exterior 9.0 8.3 2.8 - six colors 9.0 8.4 2.4 - fat color 9.0 8.2 2.1 - off-flavor 9.0 8.1 1.7 - succulent 9.0 8.4 3.3 - overall sign 9.0 8.3 2.1 -

As shown in Table 5 above, the beef stored in the transport containers of Examples 1 and 2 of the present invention had superior appearance, flesh color (bright red), fat color (milky white), compared to the control group and Comparative Examples 1 and 2, overall until 5 days. It was confirmed to show off-flavor, juiciness, and overall palatability. However, it was confirmed that the sensory properties of the beef stored in the transport containers of Examples 1 and 2 decreased rapidly from about the 9th day.

100: transport container 102: external blower fan
104: housing 106: door
108: handle 110: control unit
112, 114: exhaust port 116: cooling plate
116`: top plate 116``: bottom plate
118: bulkhead 120: convection chamber
122: intake fan 124: intake port
126: latent heat material 128: latent heat material hole
130: thermoelectric element 132: heat absorbing part
134: heating unit 140: plasma device
144: plasma nozzle

Claims (16)

A housing having an internal space in which agricultural and livestock products are provided, and a door for opening and closing the space is installed;
a cooling plate provided on the inner upper side of the housing and accommodating a plurality of latent heat materials;
a thermoelectric element provided through the upper portion of the housing and having a lower surface in contact with an upper surface of the cooling plate to generate electric power while dissipating heat accumulated in the latent heat material and the cooling plate to the outside; and
a plasma device provided outside the housing and generating plasma by using the electric power generated by the thermoelectric element;
A convection chamber having a space therein is provided under the cooling plate,
The convection chamber comprises at least one intake fan provided at a lower portion and at least one air inlet disposed at a distance from the intake fan. The transport container according to claim 1, wherein the plasma device generates a plasma so that ozone of 0.05 to 0.2 g/h is generated based on the ozone concentration. The shipping container according to claim 1, wherein the plasma is generated for 50 to 70 seconds per hour. The transport container according to claim 1, wherein the discharge gas used to generate the plasma is air. 5. The container of claim 4, wherein the flow rate of the discharge gas is 15000 to 25000 SCCM. The transport container according to claim 1, wherein the transport container is provided with an external blower fan installed on one side of the housing to exchange heat with the outside air. The transport container according to claim 1, wherein the cooling plate is provided with an upper plate and a lower plate to be spaced apart in parallel from each other, and the upper plate and the lower plate are connected through a plurality of partition walls. The transport container according to claim 7, wherein the latent heat material is charged in a space formed between the upper plate and the lower plate. delete The shipping container according to claim 1, wherein a nozzle connected to the plasma device is provided on an inner lower surface of the housing. The transport container according to claim 1, wherein a rechargeable battery is embedded in the housing. According to claim 1, wherein the transport container, characterized in that the central temperature of the inner space of the transport container and the agricultural and livestock products are maintained at any one of 2 to 8 ℃ temperature. According to claim 1, wherein the agricultural and livestock products are transport and delivery container, characterized in that at least one selected from the group consisting of meat, seafood, fresh vegetables and fruits. (A) adding the agricultural and livestock products to the shipping container of any one of claims 1 to 8 and 10 to 13;
(B) generating electric power while dissipating heat to the outside through a thermoelectric element provided in the transport container; and
(C) generating a plasma through a plasma device provided in the transport container using the generated power; Agricultural products distribution method comprising a. 15. The method of claim 14, wherein the agricultural and livestock distribution method characterized in that the plasma is generated using the rechargeable battery built in the transport container. [16] The method of claim 15, wherein the steps (B) and (C) are performed simultaneously or sequentially.

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