JPH07163325A - Apparatus for sterilizing food material and retaining freshness thereof and method therefor - Google Patents

Abstract

PURPOSE:To provide a method for sterilizing a vegetable and a fruit, a green vegetable, a fresh fish, dressed meat, etc., and retaining the freshness thereof by using electrolytically produced water and an apparatus therefor. CONSTITUTION:This method for sterilizing a food material and retaining the freshness of the food material comprises mixing strong acidic water obtained by the electrolysis of flowing and salting water with free chlorine water preopared by the electrolysis with a diaphragmless electrolytic cylinder and using the resultant weak acidec treated water for washing and sterilizing a vegetable and a fruit, a green vegetable, a fresh fish, dressed meat, etc., regulating weak alkali treated obtained by the electrolysis of salted tap water with the diaphragmless electrolytic cylinder to a cols temperature, dipping the washed and sterilized food material therein and directly pressrving the food material at a low temperature. The method is further excellent in retention of the freshness of the food material. Furthermore, this apparatus is capable of simply achieving the sterilization, washing and retaining of the freshness in the method for washing and sterilizing the food material and retaining the freshness of the food material by using the same apparatus.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for sterilizing fruits and vegetables, vegetables, fresh fish, meat, etc. using electrolyzed water (hereinafter simply referred to as "electrolyzed water" or "treated water") and maintaining the freshness thereof. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, in food improvement and backyards of supermarkets, fruits and vegetables, vegetables, fresh fish, meat, etc. are washed in advance as necessary, and after being divided into a certain amount and subdivided, It is always packed in a pack or the like, stored in a low-temperature refrigerator or the like, and appropriately displayed in a store for sale. In this case, in order to wash and sterilize these fruits, vegetables, fresh fish, meat, etc., it is necessary to wash and sterilize using a chemical such as sodium hypochlorite. This aqueous solution of sodium hypochlorite is unstable and cannot be stored for a long period of time, and there are many problems with proper concentration control and residual concentration even when used after diluting from a predetermined stock solution.

[Problems to be Solved by the Invention] The same can be said with respect to the cleaning and sterilization of food materials performed in the backyard of the food factory or the supermarket, and the above-mentioned problems can be solved by following the cleaning and sterilization of these food materials. When using sodium chlorite, the sodium hypochlorite must not remain, so the foodstuffs washed with the sodium hypochlorite solution are then washed with fresh water. is there. Also,
In the food factory or the backyard of a supermarket, it is necessary to maintain the freshness of the food and store it for a long time. In that case, to maintain the freshness of the food, after sterilizing and cleaning the food, soak it in cold salt water and store it at a low temperature.
The method of maintaining the freshness is taken, but when this method is used, the food is once washed with a sodium hypochlorite solution of a predetermined concentration, sterilized and washed, and then used for this washing. Rinse out sodium hypochlorite, then soak such food in cold salt water, store it in a cold room, wash with sodium hypochlorite solution, wash with fresh water, soak in cold salt water. It is necessary to go through the steps such as. It is very troublesome to perform such a plurality of processes in a backyard of a supermarket, which is not so wide, and the working efficiency thereof is remarkably poor.

[0005]

The applicant of the present application has already filed a patent application for a method of producing free chlorine water as an alternative to the sterilization and washing using this aqueous solution of sodium hypochlorite (Japanese Patent Application Laid-Open No. Hei 10 (1999) -242242). No. 4-330986), the weak alkaline water obtained in the process of the invention according to this application is immersed in the food at a low temperature, and then the food is stored at a low temperature, which is extremely excellent in maintaining the freshness of the food. I found it effective. Also, in the device for producing the free water,
It has been found that the weakly acidic treated water obtained by introducing the acidic water obtained by electrolytic production of salted water has an extremely excellent effect on sterilization and washing of food materials. Therefore, the inventors of the present application firstly, through the activated carbon filter or without the weakly acidic treated water obtained by electrolyzing the acidic water obtained by the saltwater-generated salt electrolysis in the diaphragmless electrolysis tube. This is used as sterilizing and washing water for foodstuffs, and then weakly alkaline treated water obtained by electrolyzing tap water in which an inorganic salt such as salt is melted is cooled to about 5 to 10 ° C through a cooler, To devise a method of maintaining the freshness of the foodstuffs by soaking the foodstuffs such as fruits and vegetables, fresh fish, and meat in cold-heated water, and then storing these foodstuffs in a low temperature state. I arrived. In this case, as the treated water, weakly acidic treated water and weakly alkaline treated water obtained from the electrolytic tube may be used as water for sterilizing and washing and maintaining freshness, respectively. It was found that even if it is mixed with tap water or ground water at a predetermined ratio and used, it is quite effective.

[0006] That is, the applicant of the present application, the weakly acidic treated water obtained by mixing strongly acidic water obtained by the above-mentioned salt water electrolysis with free chlorine water obtained by electrolyzing in a diaphragmless electrolysis tube, fruits and vegetables, It is used for washing and sterilizing fresh fish, meat, etc.Also, the weakly alkaline treated water obtained by electrolyzing salted tap water in a diaphragmless electrolytic tube is cooled, and the washed and sterilized food is immersed in it at low temperature. By saving,
This method is excellent for maintaining the freshness of foods. Then, the inventors have devised a device that easily achieves the same sterilization cleaning and freshness maintenance by the same device as the above-mentioned cleaning and sterilizing method of the foodstuff and the same freshness maintaining method of the same foodstuff.

[0007]

The present invention intends to maintain the freshness of foodstuffs by using the sterilizing action existing in the electrolytically generated acidic water for washing and sterilizing foodstuffs and using the salted running water generation electrolyzed weak alkaline water obtained by the same apparatus. It is a thing. The mechanism by which the weak alkaline water contributes to maintaining the freshness of the foodstuffs is not necessarily clear, but probably the presence of free chlorine generated in the process of electrolysis largely contributes to maintaining the freshness of these foodstuffs. It is thought that it has contributed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the outline of an embodiment of an apparatus for producing treated water for sterilizing and cleaning food materials and maintaining freshness according to the present invention. In FIG. 1, 24 is a tap of tap water, 25 is a width of 102 cm, a height of 145 cm,
It is a diaphragm-less electrolytic tube having a capacity of 140 cm ³ . The electrolysis tube 25 has an electrolysis region 4 in which both anode and cathode electrodes 26 and 27 having a length of 85 cm, a width of 35 cm and a thickness of 2 mm are arranged.
1 and a mixed area 42 in which the electrolyzed water is mixed with the tap water, and each of the areas 41, 42 has an inner wall 4
The communication port 43 is provided at the center of the communication port 4.

Each electrode 2 arranged in the electrolysis region 41
6, 27 are respectively connected to the DC power source 28, and DC5
The DC current of 20 to 30 A is supplied. The electrolytic tube 25 is a so-called diaphragmless electrolytic tube having no electrolytic membrane between the electrolyzed water regions between the electrodes.
Therefore, the ionized water between the electrodes 26 and 27 is
Electrolyzed by both electrodes, the electrolyzed water is 10,000
20 minutes per minute of electrolyzed water containing about 0 ppm residual chlorine component
At a flow rate of about cc, through the flow port 43, flows into the mixing region, and is mixed with running water from the supply port 31,
Electrolyzed water having an alkaline component of about 60 to 80 ppm is configured to flow out from the outlet 32.

Therefore, in the electrolysis region 41, in order to salt the water inside the electrolysis region 41 from the bottom, 10% is added.
The salting device 29 filled with the salt solution of No. 1 is arranged, and the salt solution is supplied to the electrolytic cylinder 25 at a predetermined ratio through the addition pump 30.
Is configured to feed. In addition, the mixed region 42
Is provided with the running water supply port 31, and the outflow port 32 is provided on the opposite side. Further, in order that the electrolyzed water discharged from the mixing region 42 to the outlet 32 has a residual chlorine component of about 60 ppm and flows out, the outlet 32 is located above the supply port 31. It is configured to be placed in.

An activated carbon filter device 35 is connected to the outlet 32 via a discharge pipe 33 and a valve 34 so that the treated water from the electrolytic cylinder 25 can be used as sterile water. Further, the discharge pipe 33 has a structure in which the generated treated water can be used as it is as sterilizing water via the valve 36. Similarly, the discharge pipe 33 is provided with a cold water storage tank 39 via a valve 37 and a cooler 38, and a cooled treated water is stored via a valve 40 provided in the water storage tank 39. The treated water cooled to about 5 to 10 ° C. as needed can be used by opening the valve 40.

Using this device, the food is washed and sterilized,
And the method of maintaining the freshness is demonstrated. The tap 24 is opened so that the tap water directly flows into the mixing area 41 of the electrolytic tube 25. And
The electrodes 26, 27 are controlled while controlling the inflow of the saline solution.
A DC5V, 20-30A electric current is passed through to generate weakly alkaline treated water. First, when the treated water produced by this example is used as sterile water for food production, the valves 36 and 37 are closed, the valve 34 is opened, and the treated water is passed through the activated carbon filter 35 as sterile water. use.

Next, when the treated water produced by this embodiment is used as sterilizing water for sterilizing foodstuffs, valves 34 and 37 are closed and valve 36 is opened to wash the foodstuffs with the treated water. Then, germs adhering to the surface of the food are sterilized. Further, when the treated water produced in this example is used as freshness maintaining water for foodstuffs, the valves 34 and 36 are closed and the valve 37 is opened to cool the produced treated water. 5 to 10 ° C on machine 38
After that, it is led to a water storage tank 39 to store water. The valve 40 is opened, and the cooled and stored treated water is filled in a predetermined container (not shown) as appropriate, and the food is immersed in the container for a predetermined time.

Thereafter, if this food is taken out and stored at a low temperature, the freshness of the fresh food can be maintained for a long time regardless of the type of fruit, vegetables, fresh fish, meat, etc. In addition,
The weakly alkaline-treated water obtained by directly treating this tap water has a sterilizing action as it is, and thus may be used as it is as sterilizing water for foodstuffs and the like as described above.
Therefore, by using the cooled weakly alkaline treated water, the ingredients such as fruits and vegetables, vegetables, fresh fish, and meat are washed,
The bacteria adhering to the surface are killed, and thereafter, the food is immersed in the cooled treated water for a predetermined time as it is, and then the food material is stored at a low temperature.

By doing so, it is not necessary to change the type of water used in each step of washing and soaking, and each step of sterilizing and washing foods and soaking for maintaining freshness can be performed. , Can be achieved with the same water, and the work efficiency is extremely excellent.

From the electrolyzer according to the present embodiment having the above-described structure, it is possible to constantly purify 2.5 liters to 5.0 liters per minute of weak alkaline water. Weak alkaline water as sterilizing water,
It was used for sterilization and washing of foods and maintenance of freshness. Table 1 shows the physical properties of weak alkaline water obtained by this treatment.

[Table 1] Of these, pH 8.18, dissolved chlorine 60 ppm, and redox potential (value with respect to silver-silver chloride electrode) of 798 mV were used as sterilizing water to collect sterilizing effect data by pure culturing. As a result, the results shown in Table 2 were obtained. This Table 2 shows the measurement results of the viable cell count per 1 ml of the test water to which the bacterial solution was added, and 1 minute after the sterilizing water according to the present invention was used (after the action), yellow bacteria such as Escherichia coli For the cocci, salmonella, and enterococci, the theoretical number of bacteria added was 5.
5 x 10 ⁶ , 5.0 x 10 ⁶ , 5.4 x 10 ⁶ , 2.5 x
The value of 10 ⁶ indicates that the bacteria were sterilized by the time no bacteria were detected. In addition, regarding Bacillus cereus, of the theoretically added number of bacteria of 6.0 × 10 ⁶ , one minute after the same action,
A slight bacterial count of 2.7 × 10 ² is recognized, but it can be known from the number of added bacteria that the number is drastically reduced.

Next, regarding food materials, dissolved chlorine 60 pp
m, immersion time 4 minutes (A), same dissolved chlorine 60 ppm, showering time 5 minutes (B), using sodium hypochlorite,
Using this dissolved chlorine of 200 ppm and immersion time of 4 minutes (C), horse mackerel, kinki, blue goat, sunny lettuce, sweet shrimp,
The residual bacterial counts of chicken (cut into pieces) and cucumber were compared. The results are shown in Table 3.

[Table 3] It should be noted that the non-treatment means a case where the above ingredients are left as they are without using these liquids. As can be seen from Table 3, the sterilized water according to the present invention and sodium hypochlorite have the same number of remaining bacteria but the same dissolved chlorine concentration when the immersion time is the same. From this, it can be known that the sterilizing water according to the present invention has the same effect with 1/3 of the dissolved chlorine.

Next, weak alkaline water (dissolved chlorine 60 ppm) and sodium hypochlorite (dissolved chlorine 200 ppm) obtained from the apparatus of the above-mentioned embodiment were run for 5 minutes and 10 minutes under a running water condition (flow rate 2.5 l / min). After washing, the number of residual live bacteria and E. coli was examined. In this examination, as the processed foods, cucumber slices, parsley,
Trials were tried on universal leek slices and lettuce cuts. The results are shown in Table 4.

[Table 4] As a result, the chlorine contact amount ratio of the weak alkaline water according to the present invention is 300/2000 to 240/2 of sodium hypochlorite.
000 = 1/7 to 1/8, and it can be known that the treated water according to the present invention has a cleaning effect 7 to 8 times that of sodium hypochlorite.

As a modified example, a method and apparatus for supplying strongly acidic water obtained by electrolysis to a diaphragmless electrolytic tube to sterilize food and maintain its freshness will be described. FIG. 2 is a schematic view of the embodiment. In FIG. 2, 1 is a width of 19 cm, a height of 15 cm, and a capacity of 1.2.
A second electrolytic cylinder of 5 m ³ , in which the second anode side electrode 2 and the second cathode side electrode 3 are arranged with the electrolytic film 4 interposed, and the second anode side electrolytic cylinder is provided around the electrolytic film 4 respectively. It has a region 2 ₁ and a second cathode side electrolytic cylinder region 3 ₁ . Reference numeral 15 is a second salt adding device for adding a predetermined amount of salt to tap water.
And a pipe 16 connecting the second anode side electrolytic cylinder region 2 ₁ and the second cathode side electrolytic cylinder region 3 ₁ with a salt of a predetermined ratio by the principle of Venturi tube.

Therefore, the salting device 15 comprises a venturi section 17, a saline storage section 18 and a second saline flow rate adjusting pump 19. The pipe 16 passing through the salting device 15 is branched by the branching portion 20, and the second anode side electrolytic cylinder region 2 _{1 of} the second electrolytic cylinder 1 is connected by the pipes 21 and 22 via the flow valves 13 and 14, respectively. And the second
It is connected to the cathode side electrolytic cylinder region 3 ₁ . Further, the second anode side electrolytic cylinder region 2 ₁ and the second cathode side electrolytic cylinder region 3 ₁ are configured so that the treated electrolyzed water flows out by the pipes 23 and 24, respectively.

On the other hand, the second anode side electrode 2 and the second cathode side electrode 3 of the second electrolysis cylinder 1 are supplied with 48 V via the relay means 12 by using commercial 100 V as a power source.
A second DC power supply device 11 arranged to apply a DC voltage current of 40 A between the electrodes is arranged. Further, the pipes 23 and 24 are provided with electromagnetic switching valves 6 ₁ and 6 ₂ for changing the outflow of electrolyzed water. These electromagnetic switching valves 6 ₁ and 6 ₂ are configured so that, in synchronization with the relay means 12, a constant amount of anode water or cathode water always flows out from only one of them. This is because the second anode side electrode 2 and the second
It is necessary to prevent the cathode side electrode 3 from deteriorating, and in order to remove it, a reverse voltage is applied to the electrode. However, in order to prevent the efficiency of the electrolytic treatment from decreasing, Even when a reverse voltage is applied, the acidic water as the anode water is collected.

In the present embodiment, the valve 7 is directly provided on the anode side outflow pipe 23, and the acid water obtained through the valve 7 is supplied to the supply port 31 of the diaphragmless electrolytic tube 25.
Is configured to be guided to. An activated carbon filter device 35 is connected to a discharge pipe 33 from the electrolysis tube 25 via a valve 34 as in the first embodiment so that the treated water from the electrolysis tube 25 can be used as sterile water. Is configured. Further, the discharge pipe 33 has a valve 3
The generated treated water can be used as it is as a sterilizing water via the 6 through. Similarly, the discharge pipe 33 is connected to a cold water storage tank 39 through a valve 37 and a cooler 38, and the storage tank 39 is provided with a valve 40 to store the cooled treated water and to store it as necessary. Depending on 5
It is constructed so that the treated water cooled to about 10 ° C. can be used.

A method for cleaning and sterilizing foodstuffs by operating this apparatus will be described. First, one of the second electrodes is used as a positive electrode and the other is used as a negative electrode, and a direct current of 48 V, 40 A is applied between the second electrodes from the second DC power supply device 11. Then, the water tap 5 is operated so that a flow rate of about 1 liter to 2.5 liters per minute is adjusted to flow into the second electrolytic cylinder 1. Then, by adjusting the second saline flow rate adjusting pump 19,
The salt solution is adjusted to flow into the second electrolysis tube 1 at a predetermined rate that most promotes electrolysis and promote electrolysis.

On the other hand, if the electrolytic treatment is continued for a long time,
Since the efficiency of the electrodes is reduced, in this embodiment, the relay means 12 is operated to switch the flow of the current from the second DC power supply device 11 when a predetermined time elapses. That is, the electrode used so far as the positive electrode is switched to the negative, and the electrode used so far as the negative electrode is switched to the positive. And
Along with this, the solenoid valves 6 ₁ and 6 ₂ are switched so that the area previously used as the second anode side electrolysis tube area 2 ₁ becomes the cathode side electrolysis tube area and the second cathode side electrolysis tube area 3 Use the area used as ₁ as the anode side electrolytic cylinder area,
Purify acidic water and alkaline water respectively,
Each is discharged from the valve 7, and the electrolytic cylinder 25 is discharged.
To flow into. At this time, the tap 2
Keep 4 closed.

The electrolytic cylinder 25 is similar to the electrolytic cylinder 25 used in the first embodiment, and has both an anode and a cathode electrode 26 having a length of 85 cm, a width of 35 cm and a thickness of 2 mm.
The electrolyzed region 41 in which 27 is arranged and the electrolyzed water are divided into a mixed region 42 in which the tap water is mixed, and each of the regions 41, 42 is a flow port 43 provided in the center of the inner wall 44. Is being communicated by. Then, similarly to the first embodiment, the electrodes 26 and 27 arranged in the electrolysis region 41 are connected to a DC power source 28, respectively, and D
It is configured to be supplied with a DC current of C5V, 20 to 30A. The ionized water between both electrodes 26, 27 is electrolyzed by both electrodes, and the electrolyzed water is 10,000.
Electrolyzed water containing a residual chlorine component of about ppm flows into the mixing region through the flow port 43, and the supply port 31
The electrolyzed water having a residual chlorine content of about 60 ppm, which is mixed with the electrolyzed acidic water from No. 1, is discharged from the outlet 32.

Therefore, in the electrolysis region 41, in order to salt the water inside the electrolysis region 41 from the bottom, 10% is added.
The salting device 29 filled with the salt solution of No. 1 is arranged, and the salt solution is supplied to the electrolytic cylinder 25 at a predetermined ratio through the addition pump 30.
Is configured to feed. In addition, the mixed region 42
Is provided with the running water supply port 31, and the outflow port 32 is provided on the opposite side. Further, in order that the electrolyzed water discharged from the mixing region 42 to the outlet 32 has a residual chlorine component of about 60 ppm and flows out, the outlet 32 is located above the supply port 31. It is configured to be placed in.

When strong acidic water obtained by electrolysis is supplied to a diaphragmless electrolysis tube and electrolyzed as in the apparatus of this embodiment, residual chlorine is efficiently left in the mixing region 42 of the electrolysis tube 25. The electrolytically treated water containing the components and the strongly acidic water are mixed, so that the production amount of the treated water is greatly increased. Therefore, the PH value of the treated water generated from the outlet 32 can be freely set to an appropriate value, and thus, the food processing can be performed through the same activated carbon filter 35 as that provided in the first embodiment. Used as sterilizing water or without passing through the activated carbon filter 35,
Even when this is used for washing food and used for killing bacteria and the like adhering to the surface, a large amount of treated water can be used at an appropriate PH value. This means that when the treated water is used to maintain the freshness of food,
The same can be said.

Next, an embodiment of a washing and freshness maintaining device in a supermarket by combining a device for producing treated water and a chilled water device according to the present invention will be described with reference to the drawings. FIG. 3 is a schematic view of an embodiment of a cleaning and freshness maintaining device for use in the backyard of a supermarket. In FIG. 3, reference numeral 51 is a weak alkaline water producing apparatus according to the present invention, and 52 is a cold water apparatus for cooling the produced treated water. In this embodiment, since chlorine water is used,
Titanium is used as the material. Further, 53 has a volume of 2000 liters, and the cooled treated water is always 5 to 1
It is a heat-insulating tank that is stored at a water temperature of 0 ° C. In FIG. 3, only pipes around water are shown, and electrical wiring and the like are omitted. In the water supply pipe, the pipe from the weak alkaline water generator 51 is finally piped to each cooking sink to be used as aseptic water for cooking, and also to produce fruits and vegetables through each pipe facility in the store. Room, fresh fish cooking room, meat cooking room,
The treated water can be used at any time in hand-washers, two-layer sinks, floor-washing faucets, and fruit sterilization rooms in the fruit and vegetable work room after being routed to a side dish / bread cooking room, kitchen garbage room, employee toilet, etc. In addition, in the fresh fish cooking room,
The treated water can be used in a sashimi cooking sink, a fresh fish cooking sink, etc., in addition to a two-layer sink and a floor-washing faucet.

In the meat cooking room, the pipe is connected to a meat washing table in addition to a handwasher, a two-layer sink, a faucet for floor washing, and the treated water can be used in these operations. It is configured. In addition, in the prepared food / bread cooking room, pipes are connected to a hand-washing device, a two-layer sink, and a faucet for floor washing, and the treated water is connected to each department so that the treated water can be used at all times.

[0032]

INDUSTRIAL APPLICABILITY In the present invention, weakly acidic treated water obtained by electrolyzing strongly acidic water obtained by running salt water electrolysis in a diaphragmless electrolysis tube, or running water salted tap water in a diaphragmless electrolysis tube is electrolyzed. Foods that are effective for washing, sterilizing, and maintaining freshness by cooling the obtained weak alkaline water, washing and sterilizing the food, and then immersing the food in this treated water for a certain period of time and storing it at low temperature A sterilization and freshness maintenance device and a method thereof can be provided. According to this method, the treated water produced has extremely strong bactericidal and sterilizing effects, and can strongly extinguish the viability and fertility of microorganisms such as bacteria and viruses, as well as deodorizing and bleaching. It has a particularly excellent effect on various cleaning effects such as force and astringency.

The temperature of the treated water is always 5 ° C to 10 ° C.
It is possible to prevent the growth of bacteria and keep the freshness of fresh products for a long time by controlling the temperature of the product and washing and immersing it in this treated water. Furthermore, despite the fast bacterial control effect, after washing and sterilization, the treated water returns to extremely safe ordinary water by contact with light and air, so the concentration is the same as when using chemicals. Penetration of objects due to gradients,
There is no need to worry about the harmful effects of residue, it can be used as a human body and natural cleansing, sterilizing and freshness maintaining agent, and cleaning, sterilizing and freshness maintaining methods using such treated water are also extremely harmless. can do. In addition, unlike systems that use strongly acidic water, there is no change in the quality of the food that is the object of use, and there is also the risk that equipment and fixtures required when using treated water will rust or corrode. There is an extremely excellent effect that there is no.

When the electrolyzed strongly acidic water is supplied to produce the treated water, a large amount of treated water can be produced. Further, such electrolyzed strongly acidic water is used. The treated water of the diaphragmless electrolytic cylinder obtained by the
The PH value can be set freely, and it is very easy to use for cleaning, sterilizing, and freshness maintaining water.

[Brief description of drawings]

FIG. 1 shows an outline of an embodiment of an apparatus for producing treated water for sterilizing and cleaning food materials and maintaining freshness according to the present invention.

FIG. 2 is a schematic diagram of, as a modified example, a device for supplying strongly acidic water obtained by electrolysis to a diaphragmless electrolytic tube to obtain treated water for sterilizing food materials and maintaining their freshness.

FIG. 3 is a schematic view of an embodiment of a cleaning and freshness maintaining device for use in a backyard of a supermarket.

[Explanation of symbols]

1 ... electrolyte tube, 2 ... second anode side electrode, 2 ₁ ... second anode side electrolyte tube region, 3 ... second cathode electrode, 3 ₁ ... second cathode electrolysis Cylindrical region, 4 ... Electrolytic membrane, 5 ... Water tap, 6 ₁ , 6 ₂ ... Electromagnetic switching valve, 7 ... Valve, 8 ... Tank, 10 ... Stopper, 11 ... -Second DC power supply device, 12 ... Relay means, 13, 14 ... Flow valve, 15 ... Salting device, 16 ... Piping, 17 ... Venturi part, 18 ... Saline solution storage part , 19 ... Saline flow rate adjusting pump, 20 ... Branching part, 21 ... Piping, 23 ... Piping, 24 ... Water tap 25 ... Electrolytic tube, 26 ... First anode Electrode, 27 ... 1st cathode electrode, 28 ... 1st DC power supply, 29 ... 1st salting device, 30 ... Addition pump, 31 ... Supply Mouth, 32 ... Outflow port, 33 ... Electrolytic cylinder discharge pipe, 33 ... Discharge pipe, 34 ... Valve, 35 ... Activated carbon filter device, 36 ... Valve, 37 ... Valve , 38 ... Cooler, 39 ... Cold water storage tank, 40 ... Valve, 41 ... Electrolysis area 42 ... Mixing area 43 ... Partition wall 44 ... Flow port 51 ... Weak Alkaline water generator or strongly acidic water generator, 52 ... Cold water device 53 ... Heat-proof tank

[Table 2]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C02F 1/50 540 B 550 D 560 BF

Claims (9)

[Claims] 1. A mixing region having a flowing water supply port and a treated water outlet at the upper part, and a positive electrode and a negative electrode at the lower part, and a saline solution is added to the bottom part thereof via an addition pump. A non-diaphragm electrolysis for foodstuff sterilization and freshness maintenance, characterized in that it comprises an electrolysis region, and the mixing region and the electrolysis region are separated by a partition having a flow port of a predetermined diameter. Cylinder. 2. The running water supply port provided in the mixing area,
The non-diaphragm electrolytic tube for sterilizing foodstuffs and maintaining freshness according to claim 1, which is provided above the treated water outlet. 3. A method for sterilizing foodstuffs by washing and sterilizing foodstuffs with weakly alkaline free chlorine water obtained by electrolyzing running salted tap water in a diaphragmless electrolysis tube. 4. A method for sterilizing foodstuffs by washing and sterilizing foodstuffs with weakly alkaline free chlorine-treated water obtained by adding strongly acidic water obtained by running salt addition electrolysis to free chlorine water obtained by electrolyzing in a diaphragmless electrolysis tube. 5. A method in which weak alkaline treated water obtained by electrolyzing running salted tap water in a diaphragmless electrolysis tube is cooled, the food is dipped in this cold treated water for a certain period of time, and then stored at low temperature. To maintain the freshness of food ingredients. A method of sterilizing foods by washing and sterilizing. 6. A weakly acidic treated water obtained by adding strongly acidic water obtained by running salt addition electrolysis to free chlorine water obtained by electrolyzing in a diaphragmless electrolysis tube is cooled, and food ingredients are added to this cold treated water. A method for maintaining the freshness of foodstuffs by maintaining the freshness of the foodstuffs by soaking them for a certain period of time and then storing them at low temperature. 7. A diaphragmless electrolysis tube comprising a mixing region in which an outflow port is arranged at a position higher than the flowing water supply port in an upper part, and an electrolysis region having a positive electrode and a negative electrode in a lower part. A DC power source connected to the electrodes and the negative electrode, a salting device arranged at the bottom of the electrolysis region and supplying a saline solution to the electrolysis region at a predetermined ratio via an addition pump, and provided at the outflow port. Disinfection pipe and a discharge pipe. 8. The discharge pipe is connected to a cold water storage tank via a valve and a cooler, and the treated water cooled to about 5 to 10 ° C. is stored in the storage tank via a valve provided in the storage tank. The foodstuff sterilizing and freshness maintaining device according to claim 7, which is configured to obtain cold-heated treated water appropriately stored. 9. A second electrolytic tube which is directly connected to a running tap and is constructed so as to be branched and supplied to the anode side and the cathode side after addition of a small amount of salt, and the second electrolytic cylinder. A power supply device for applying a predetermined voltage and current to the electrodes of the electrolysis tube, electromagnetic switching valves provided on the outflow side on each of the anode side and the cathode side, and on the anode side outflow pipe of the second electrolysis tube. A supply valve is provided which supplies acidic water from the second electrolysis tube to a supply port of the first diaphragmless electrolysis tube, and inside the electrolysis tube, an anode electrode and a cathode electrode which are respectively connected to a DC power source, A salting device that is disposed in the electrolysis region of the electrolysis tube and supplies a salt solution to the diaphragmless electrolysis tube at a predetermined ratio via an addition pump, and a position higher than the supply port in the diaphragmless electrolysis tube. A mixing area provided with an outlet provided in
A discharge pipe provided at the outflow port, and the discharge pipe is connected to a cold water storage tank through a valve and a cooler, and cooled to about 5 to 10 ° C through a valve provided in the water storage tank. An apparatus for sterilizing food and maintaining freshness, characterized in that the treated water thus treated is generated and stored.