WO1998012924A1

WO1998012924A1 - Method for preparing sterilizing solutions, sterilizing solutions, and sterilizing media

Info

Publication number: WO1998012924A1
Application number: PCT/JP1997/003413
Authority: WO
Inventors: Kaichiro Sakurada
Original assignee: Snd Co., Ltd.
Priority date: 1996-09-24
Filing date: 1997-09-24
Publication date: 1998-04-02
Also published as: JP3107399B2

Abstract

Sterilizing solutions prepared by adding a fine copper powder to an aqueous solution having a pH value regulated with an organic acid, stirring the resulting mixture with an agitator, etc., filtering the mixture to thereby give a stock solution containing pure copper ions eluted from the metallic copper, and then appropriately diluting the stock solution to thereby give sterilizing solutions comprising as the main component the aqueous solution of the organic acid containing the pure copper ions. These sterilizing solutions are harmless to men and exert excellent and long-lasting bactericidal effects. Thus, they are usable as substitutes for the chlorine-containing antiseptics or alcoholic antiseptics conventionally employed and applicable to the sterilization of cutting boards in kitchens, instruments in food processing plants, dishes, schools, etc. Because of being harmless to men, they are the most suitable antiseptics for infants and inpatients.

Description

Description Disinfection solution manufacturing method, disinfection solution and disinfection medium

The present invention relates to a disinfecting solution having a disinfecting effect by copper ions and a method for producing the same. Background art

Conventionally, bactericides such as chlorinated, neutral stone, inverted stone, cresol stone, formalin solution, and alcohol solution have been widely used. Very few are said to be safe for the human body. For example, chlorine-based germicides are not limited to foods, but when organic substances are used, they react very quickly with organic substances and the bactericidal performance due to chlorine is reduced to near zero. Alcohol-based germicides have almost no bactericidal effect because water adheres to the target object, or substances with high water content are diluted to lower the alcohol concentration. In addition, alcoholic bactericides are not suitable for foods, etc. because of their unique odor. In addition, chlorine-based and alcohol-based disinfectants evaporate quickly, so use them for sustainability.

Therefore, in the present invention, even if it is medically accumulated without using ozone sterilization, chlorination, or benzoyl derivative products that are harmful to the human body for sterilization, or products that are prohibited from being used for the human body, etc. It is an object of the present invention to provide a liquid disinfectant solution which is harmless to the human body, has a high bactericidal effect, maintains a disinfecting effect, and can be easily used by using harmless copper ions, and a method for producing the same. . Furthermore, in addition to a long-lasting disinfecting effect, a disinfecting solution and a quick disinfecting and deodorizing effect are provided. It is also an object of the present invention to provide a medium for sterilization using a sterilizing solution and a method for producing the same. Disclosure of the invention

Therefore, in the present invention, a disinfecting solution that maximizes the bactericidal effect of copper ions is provided by using a process of mixing powdered pure copper with water or an aqueous solution of an organic acid. Liquids containing copper ions can also be formed by using copper compounds such as copper sulfate or copper chloride. However, an aqueous solution in which these copper compounds are dissolved contains a sulfate group in copper sulfate together with copper ions, and a chloride ion is present in an aqueous solution in which copper chloride is dissolved. Therefore, the activity of copper ion is low, and it is difficult to effectively utilize the inhibitory effect of a small amount of copper ion on the growth of microorganisms. On the other hand, by mixing pure copper with water or an aqueous solution of an organic acid, that is, in the sterilizing solution of the present invention containing pure copper ions obtained by dissolving pure copper in water or an organic acid, sulfuric acid is used. Since there is no influence of the groups and the like, the ion activity of metallic copper can be several tens times higher than that of copper compounds, so that the bactericidal effect of copper ions can be maximized. As organic acids, it is preferable to use plant organic acids such as tartaric acid, cunic acid, ascorbic acid, lactic acid, malic acid, and fumaric acid which are safe for the human body, and among these plant organic acids, tartaric acid is used. By mixing, the effect of preventing the formation of basic copper carbonate and the like and increasing the deodorizing ability can be obtained.

Furthermore, since the disinfecting solution produced by the production method of the present invention is a liquid, it can be easily used in a wide variety of methods such as wiping, applying, or spraying a portion to be sterilized with the disinfecting solution. Is possible. In addition, the presence of copper ions can maintain the bactericidal effect in wet places and in places with high water content. Can also be applied. Further, since the disinfecting solution of the present invention contains pure copper ions obtained by dissolving copper ions from metallic copper, metallic copper, not copper compound salts, remains on the surface after evaporating water, and the sterilizing effect can be maintained. Therefore, the disinfecting solution produced by the production method of the present invention can exhibit and maintain excellent disinfecting properties.

In the production method of the present invention, pure copper in a powder state, preferably in a fine powder state, is used to improve the elution efficiency of copper ions from metallic copper, and about 0.1 ppm to about 50 ppm of copper ions are eluted. A sterilized solution can be produced, and a sufficient bactericidal effect can be exhibited. Furthermore, in the mixing step, it is desirable to stir the solution mixed with powdered copper in order to shorten the elution time. In addition, electrolytic copper can be used as pure copper.

In particular, the disinfecting solution, which is characterized by mainly using an aqueous solution of an organic acid containing pure copper ion, has a strong and quick sterilizing effect with an acid solution, and prevents the continuous propagation of bacteria by copper ion. It exerts its power and also has high deodorizing power and freshness preserving power. By using an organic acid, the pH can be excluded from the environmental range suitable for the growth of bacteria, and if the pH falls significantly below the environmental conditions suitable for the growth of bacteria, the bacteria can be killed by itself. In addition, as the pH decreases and approaches the isoelectric point, the surface charge of each of the bacterial cell membranes decreases and the cell membrane cannot continue its physiological function and die. In addition, the presence of copper ions reduces the surface charge of bacteria, so that they act synergistically, causing the bacteria to aggregate and sediment. In addition, copper ions have the effect of electrostatically acting on the cell membrane of bacteria and inhibiting the metabolism of bacteria by water, which is a factor that leads to sustained sterilization performance. Therefore, these actions can eliminate bacteria and prevent the growth of bacteria. By using the disinfectant solution of the present invention, the germicidal effect of leaving the breeding form and killing bacteria even in a non-closed system can be achieved. Fruit is also obtained.

Conventional alcohol-based disinfectants lose their effectiveness when they evaporate, and chlorine-based disinfectants such as sodium hypochlorite disinfect because the free chlorine rapidly decreases due to the buffering action or absorption of organic substances. The effect is significantly reduced. On the other hand, in the disinfecting solution of the present invention, the action of the low pH by the organic acid kills the bacteria in a short time and can reduce the number of bacteria, and thereafter the sterilizing effect is maintained for a long time by the copper ions. be able to. Since pure copper ions are used, the bactericidal effect is maintained, and the bactericidal effect can be obtained even after the sterilizing solution is dried. Therefore, the germicidal solution of the present invention can exert its effects in both a wet environment and a dry environment.

As organic acids, it is necessary to use at least one of the group of vegetable organic acids consisting of tartaric acid, citric acid, ascorbic acid, lactic acid, and also ligonic acid or fumaric acid, which are recognized as food additives. It is possible, and by using it in combination with copper ions that are harmless to the human body, it is possible to provide a very powerful disinfecting solution that is harmless to humans. Since L-tartaric acid has high reducibility, it is difficult to form a salt such as basic cupric acid from copper ion. It has a high deodorizing power, quickly removes ammonia, trimethylamine (TMA), acetate aldehyde, etc., and has excellent freshness retention ability.

In addition, when the pH of the aqueous solution of the organic acid used to elute ion from metallic copper is in the range of about 0.8 to 3.5, the concentration of copper ions can be increased in a short time, and the copper ions are eluted. After dilution, it can be diluted to an appropriate pH. In order to further increase the concentration of copper ions in a shorter time, a strong electrolyte can be dissolved in water or an aqueous solution. Salt can be used as a strong electrolyte harmless to the human body. When an aqueous solution with a high concentration of copper ions can be obtained, In such a case, they can be provided at any dilution, such as 1/5 or 1/100, depending on the purpose of use.

Further, since the sterilizing solution of the present invention is in a convenient form of an aqueous solution, it can be used as a liquid or by various methods such as spraying. Further, the sterilizing solution is immersed in a medium such as gauze or tissue. It can also be provided as a medium for disinfection in various forms such as a disinfection sheet or a freshness preserving sheet by a method such as coating or application. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a flow chart showing an example of a process for producing a disinfecting solution of the present invention.

FIG. 2 is a table summarizing the first experimental results of the disinfecting solution of the present invention. FIG. 3 is a graph summarizing the table shown in FIG.

FIG. 4 is a table summarizing the results of the second experiment of the disinfecting solution of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a flow chart showing a process for producing a sterilizing solution according to the present invention. First, in step 11, fine powdered copper is mixed into an aqueous solution whose pH has been controlled using an organic acid. The organic acid is selected singly or in combination from vegetable organic acids such as L-tartaric acid, citric acid, ascorbic acid, lactic acid, lingic acid and fumaric acid. These organic acids are food additives which are not restricted by their use standards among the food additives of the Revised Ministry of Health and Welfare Ordinance No. 36 of 1983, and have high acidity and can be used at a low price. It is. When tartaric acid is used, the pH of a 5% aqueous solution at room temperature is about 1.68, and when citric acid is used, the pH of a 5% aqueous solution at room temperature is about 1.87. . To these aqueous solutions, for example, electrolytic copper in the form of fine powder of under 10% (electrolytic high-purity copper) (Purity of 99.9% or more))). In the production method of the present invention, since copper ions (pure copper ions) are eluted from metallic copper to obtain pure copper ions, the concentration of copper ions does not easily increase. For this reason, it is desirable to use powdered copper having a large surface area.

5 The thus obtained mixed solution of the aqueous solution of copper metal and the organic acid is stirred at Step 12 using an agitator or the like. When an aqueous solution of the above-mentioned organic acid at pH and electrolytic copper in the form of fine powder are used, stirring is continued for about 24 hours to obtain a solution in which copper ions having a concentration of about 100 ppm are eluted. The copper ions obtained in this process are different from the copper ions obtained by dissolving copper compounds and o-compounds.Sulfate groups and chloride ions to be bonded are not present in the solution, and the copper ions are highly active. (Pure copper ion), and it is difficult to make effective use of the growth inhibition of microorganisms. In contrast, by mixing the pure copper with an aqueous solution of water or an organic acid, i.e., in the sterilization solution of the present invention with a pure copper ions obtained _{1 5} by溶Su be pure copper in water or an organic acid, sulfuric acid Since there is no influence of the group and the like, the ion activity of metallic copper can be several tens times higher than that of the copper compound. Therefore, the bactericidal effect of copper ions can be maximized. Furthermore, when the liquid is dried, copper metal is deposited instead of a copper compound, so that a sterilizing effect can be obtained even in a dry state.

2 0 o

The solution in which the pure copper ions are dissolved is filtered in step 13 to remove the electrolytic copper in the solution, and further diluted in step 14 to an appropriate concentration to provide a sterilizing solution. I do. For example, when an aqueous solution of the above-mentioned organic acid is used, the pH is reduced to about 2.6 or less, preferably pH 2.0 to 2.0, by diluting about ₂₀ times to ₂₅ degrees in step 14. About 3 solutions are obtained, and a disinfectant suitable for killing Gram-negative bacteria can be produced. Further, in the above-mentioned production process, by using an organic acid such as tartaric acid, ascorbic acid, lingoic acid, and fumaric acid, it is possible to improve the germicidal performance by a synergistic effect with copper ions and to add deodorant performance. For this reason, it is desirable to produce a disinfecting solution using an aqueous solution of an organic acid such as a vegetable organic acid such as tartaric acid.

It is a matter of course that the hydrogen ion concentration of the aqueous solution of organic acid is not limited to the above, and sterilization with the same performance can be achieved by mixing fine powdered electrolytic copper into an aqueous solution with low pH and stirring. It is possible to produce liquids. In this case, it is necessary to extend the stirring time to obtain an appropriate amount of copper ion concentration. In addition, a fine powder of electrolytic copper is mixed with distilled water or other water that does not contain organic acids, and the mixture is stirred for a long time to produce a sterilizing solution that has a bactericidal effect due to copper ions eluted from metallic copper. Can be generated. A copper ion concentration of about 0.05 ppm shows sufficient bactericidal activity, but it depends on the amount of organic matter mixed, so that a bactericidal effect sufficient to be about 0.3 ppm or more is sufficient. It is desirable in recognition point. Of course, as described above, a bactericidal effect is observed even at a concentration of about 0.1 lpm or lower. In addition, the disinfecting solution produced by eluting copper ions from copper metal by the production method of the present invention has a high activity of copper ions, and thus, considering the elution time of copper ions from metal copper, it is not so large. A high-concentration solution is not required, and the upper limit of the copper ion concentration is about 30 to 50 ppm. Therefore, a commercially available disinfectant containing copper ions of about 1 to 10 ppm is effective. A sterilizing solution containing copper ions of about 5 to 8 ppm, which has a stable sterilizing power and does not increase the copper ion concentration when used as a waste liquid, is more desirable for commercial use.

Also, in step 11 or 12, a strong electrolyte such as salt Can be added to water or an aqueous solution to increase the copper ion concentration in a short time and shorten the stirring time. In a strong electrolyte, it is desirable to select a salt that is harmless to the human body. It was also recognized as an organic acid as a food additive as described above.

Since five products are used, it is possible to produce a disinfecting solution that is completely harmless to the human body and has strong sterilization performance. Furthermore, since plant organic acids are used, there is little effect on the human body even at low pH.

In general, the range of pH at which bacteria can grow is broad and lies between pH 4.0 and 10.0. However, most of the pathogenic bacteria have a growth range at pH 5.0 to 9.0, ο, but the optimal pH range is 7.0 to 7.6, and the metabolic activity is highest and smooth within this range. Done. On the surface of the bacterium, a group that gives a + charge when dissociated and a group that gives a-charge are disturbed, but as a whole, the result of the subtraction calculation of the dissociating group at pH at that time is calculated as the bacterial surface charge. Appear in shape. And on this fungus surface group

, 5 The largest component is considered to be the dissociation residue of amino acid that constitutes the protein.

Generally, the dissociation state of a neutral amino acid is as follows. In the middle, both groups are dissociated, but at pH 4.5 or lower, the result is as shown in (1) below, and at pH 9.5 or higher, as in (2) _c 20 + H ₃ N— R— CO O- + H ^{+ +} H3N -R-COOH

… (1)

⁺ H3N -R- CO O- + 〇H— ⁺ H3N-R- CO O- + H ₂₀

• · · (2) Acidic and basic amino acids are composed of various confusions

In proteins, carboxyl groups and amino groups are disturbed in the residues, and the dissociation of each depends on the PH. In addition to this, the dissociation groups of teichoic acid and polysaccharides are added to make up the surface charge of bacteria. It is called the isoelectric point (I SOELECT PO INT) at which the charge on the cell membrane of the bacteria becomes zero. The pH of gram-positive bacteria (Staphylococcus, Micrococcus, Streptococcus, Pseudococcus, etc.) 2.9, Gram-negative bacteria (Neisseria, Moraxella, Acinetobacter, Bayonet)

5 Lamiaceae, Pseudomonas, Alcaligenes, Brucella, Bordetella, Francisella, Enterobacteriaceae, Shigella, Salmonella, Escherichia, Klebsiella, Proteus, Eruisinia, Yersinia, Vibrio Family, Haemophilus, Pacillus, Clostridium, Corynepacterium, etc.) at pH 2.5-4.0

, 0 slightly different.

The bacterial suspension in which these bacteria are suspended and performing metabolic activity exists as an equilibrium suspension on the balance between the cohesion between particles and the repulsion due to charge. However, if the pH decreases and approaches the isoelectric point, or if the charge decreases due to heavy metals such as copper, the bacteria aggregate and precipitate. Therefore, not closed

, Even in the state of a _five- chain system, it escapes the breeding form and dies. In addition, when copper ions are present, they act on the cell membrane, causing the oxidation-reduction potential to fall outside the range suitable for growth, preventing water from entering and leaving, and inhibiting energy metabolism by metabolism. Can be killed.

And the function of Cu ⁺⁺ (copper ion) which remains even if moisture evaporates

20 Prevents the growth of bacteria and has high sustainability. On the other hand, conventional alcohols have a strong bactericidal activity, but the continuation of the effect is lost due to transpiration, and chlorine also has the drawback that the effect is lost by transpiration, and chlorine itself is rapidly absorbed by organic substances. Are absorbed by organic matter, and are not effective against bacteria.

5 In addition, alcohol-based and chlorine-based disinfectants both have an unpleasant odor when used, while the disinfectant of this example has no odor, and organic acids, especially L-tartaric acid, have high deodorizing power. , Ammonia, TMA (tritylamine = fish Odors, etc.), and acetoaldehyde (fatty odors) are quickly removed, thus suppressing the invasion of 蝇, a major public health enemy.

(First experimental example)

FIG. 2 shows an example of measuring the bactericidal effect of the bactericidal solution of the present invention on each bacterium, and FIG. 3 summarizes the results in a graph. Here, VERO toxin-producing Escherichia coli (0-157, 0-26), Salmonella paratyphi (S. paratyphi), Salmonella typhimurum (S. typhimurium), a strain of Sa1 Oki ella, Salmonella typhi ( Tests were performed on Salmonella typhi), Salmonel la enteritdis (Enteritidis), and methicillin-resistant staphylococci (MRSA).

Adjustment of the bacterial suspension is to create a DAD E Co. ^{1~ 4 X 1 0 5 CFU /} m 1 by a micro scan prompt, prepared for commercial present example of sterilization solution. (P H 2. 0~2. About 3 and a copper ion concentration of about 5 to 8 ppm). From the start of the reaction 3 minutes · 5 minutes · 10 minutes · 15 minutes · 20 minutes. 25 minutes · 30 minutes · 35 minutes · 40 minutes, then collect 0.01 m1 each Then, a 10-fold dilution for the experimental group was prepared, and each strain was quantified for 24 hours at 37 ° C using a BTB medium. The results are summarized in Figures 2 and 3.

As can be seen from these figures, reacting the sterilization solution of this example with respect to Escherichia coli (0- 1 5 7) viable cell number ^{2 2 0 X 1 0 3 /} m 1 of 3 minutes from the start of the reaction The antibacterial action had already started, and the bacteria had completely disappeared in about 10 minutes. As a result, it is found that the disinfecting solution according to the present invention is a particularly excellent disinfectant for Escherichia coli (0-157).

In addition, it has a particularly good bactericidal action against the Salmonella Group, and is more resistant to fungicides than 157, and has a viable cell count of 130 xl against this group. 0 ³ / ml ~ 2 5 0 x The result was that those at 10 / ml disappeared around 25 to 30 minutes.

Escherichia co] i (0-26) t For Staphyrococcus aureus (MR SA), the number of viable bacteria did not show a significant decrease until 25 minutes from the start of eradication, but 40 minutes passed Later, 0-26 decreased to 11th place, MRSA decreased to 1/3, and it was confirmed that these also had a sufficient bactericidal effect. Although measures the bactericidal effect of the 1. about 8 to p H of sterilization solution separately from the present invention from this, viable cell number 5 0 0 1 0 ³ / ml of MR SA to complete in a few minutes The result of disappearance has been obtained, and it is known that a stronger bactericidal effect can be obtained by adjusting the pH.

(Second experimental example)

Fig. 4 summarizes the results of testing the sanitizing solution of the present invention at the Japan Food Research Laboratories. As the sample, a disinfecting solution according to the present invention was prepared for commercial use (tartaric acid having a copper ion concentration of about 6.5 ± 1.5 mg / adjusted to about pH 2.15 ± 0.15). Aqueous solution) was used as the test solution. Staphylococcus aureus IFO 12732, Salmonel la enteritidis IFO 3313, and Vibrio parahaemolyticus RIMD 2210100 bacterial solution were added to the test solution, respectively, for 2.5 minutes, 1 hour, 2 hours. After 3 hours and 4 hours, the viable cell count of the test solution was measured.

As a bacterial solution, shaking culture at 35 ° C for 16 to 20 hours in an NB medium (normal broth medium supplemented with 0.2% meat extract manufactured by Eiken Chemical Co., Ltd.) (rotation speed: 8 ° to 9 °) A culture solution of the test bacterium (0 rpm) was used. The test solution was a sample (the eradication solution according to the present invention) and a control (sterilized physiological saline). However, for Vibrio parahaemolyticus, 3% salt was added to the sample, And a control to which 3% sodium chloride was added was used.

In the test, 2 ml of the bacterial solution was added to 20 ml of the test solution that had been kept at 20 ° C in advance, mixed, and stored at 20 ° C for 2.5 minutes, 1, 2, 3, and 4 hours. Thereafter, 1 ml of the mixture was immediately diluted 10-fold with SCDLP medium (Nippon Pharmaceutical Co., Ltd.) 5. In a preliminary test, it was confirmed that diluting the test solution 10-fold with the SCDLP medium inactivated the bactericidal effect of the test solution against any of the test bacteria. The number of viable cells of this diluted solution was measured by a pour plate method (cultured at 35 ° C, 2 days) using an SA medium (standard agar medium manufactured by Eiken Chemical Co., Ltd.).

, 0 viable cells. For Vibrio parahaemolyticus, all media were supplemented with 3% of sodium chloride.

The number of bacteria at the start of the measurement was determined by measuring the number of viable cells in the control immediately after the addition of the bacterial solution _(for the control, only the number of viable cells after 4 hours was measured. It indicates that no bacteria were detected.

From the results of the _five experiments, sterilization solution of the present invention, excellent effects are obtained also in many conditions the number of bacteria and ~ 1 0 ⁷ / m 1. For Staphylococcus aureus, almost no bacteria were detected after 1 hour of measurement, and completely disappeared after 3 hours of measurement. For Salmonella, no bacteria were detected after 1 hour of measurement, and for Vibrio parahaemolyticus,

No bacteria were detected in the measurement after 20 minutes. As described above, in the present experiment, results that can be highly evaluated with respect to the disinfecting solution of the present invention were obtained.

Based on these experimental data, the germicidal solution of the present invention was obtained from vegetable organic acids or tartaric acid (food additive) contained in wine, miso, sake, etc.

_(Although approved by the Ministry of Health and Welfare as ₅ ), it is a sanitizing solution that contains harmless pure copper ions and is harmless to food and the human body, but its disinfecting effect is extremely effective. Processing plant equipment, tableware, It is applicable to dogs and cats excreta in sandboxes such as schools and kindergartens, and contamination of Salmonella by foot washing pools. Therefore, considering that chlorinated disinfectants and cytotoxic formalin disinfectants conventionally used are harmful to the human body, it is useful to use them instead.

In particular, the use of this drug is considered to be the most suitable disinfectant for hygiene management of infants (nursery schools, kindergartens), inpatients, nursing home residents, hygiene management workers, food hygiene personnel, etc.

The disinfecting solution of the present invention can be provided at a pH adjusted to about 1.4 to 4.0 by dilution or the like at the time of commercialization, and has high activity

, 0 on can be provided as a liquid sterilizing solution containing an appropriate amount. Therefore, as can be seen from the above experimental results, the disinfectant solution of the present invention is injected into a manual or automatic spraying device, and the place to be sterilized is sprayed on an object or the like, so that the immediate effect is high and the human body is affected. On the other hand, a safe sterilizing effect can be obtained. For example, a food factory, hotel, hospital, canteen, catering center, or

, ₅ super market-backyard, butcher or fish shop floors, cooker device, by including the p H cutting board is sprayed sterilization liquid of two. 0 to 2.8 degrees and the present invention is adjusted to be lower Most gram-negative bacteria can be killed in a short time. In addition, even when there is a large amount of organic matter, the bactericidal effect is not invalidated due to the extreme attenuation like chlorine.

20 Also, by lowering the pH, it is possible to use it in a state where the immediate bactericidal effect is strong, and conversely, if pH is a problem, dilute it and increase the pH. It is also possible to use it in a state close to sex. Also, even if the kitchen floor or machinery is wet, the transpiration is slower than that of alcohol or chlorine, so the effect is long lasting. Absent. And since a sufficient amount of metallic copper ions is present in the disinfecting solution of the present invention, even if there are remaining bacteria, the bacteria can be separated from the breeding form and killed. The subsequent bactericidal or bacteriostatic effect can be maintained for a long time. As a result, the components remain as long as they are not washed away even if they are dried, so that the bactericidal effect is maintained and contaminants such as falling bacteria can contaminate objects such as food factory floors and food processing machines sprayed with the sanitizing solution of the present invention. In other words, the eradication solution of the present invention first kills bacteria by acid, and also prevents bacteria and the like that have fallen to the floor from absorbing nutrients and growing exponentially. be able to. As described above, the disinfecting solution of the present invention can maintain a long-lasting bactericidal effect that cannot be obtained with conventional chlorine- or alcohol-based disinfectants, and also prevents contamination due to secondary growth such as falling bacteria. be able to. In addition, considering a usage pattern in which the floor is repeatedly sprayed over a long period of time, the concentration of copper ions can be increased to prevent bacterial contamination from the floor, and even in a kitchen where small pieces of food are scattered in the corners, the spraying of this liquid causes a difference. and prevention of odor, as the _c the effect of suppressing the flying of a contaminated medium蝇obtained, chlorine or when transpiration effect or rapidly decreased after spraying of disinfectant alcohol, sterilization objects It can be said that the germicidal solution (bactericidal solution) of the present invention has solved the problem of the conventional germicidal solution, such as the fact that if water is attached, the concentration is diluted and the effect is not exhibited.

Further, as described above, the disinfecting solution of the present invention can have a deodorizing function by using a type containing an organic acid such as tartaric acid or L-ascorbic acid as a main agent or an additive. Therefore, by spraying onto the floor of a food factory that handles fish and meat, etc., it is possible to simultaneously remove the unique putrefaction odor and the like. In this way, the sanitizing solution of the present invention is washed, for example, in food processing equipment or the like after finishing daily work, or sprayed onto processing equipment such as a cutting board or a floor, etc. Bacterial contamination can be drastically reduced. Therefore, by using the disinfecting solution of the present invention, it is possible to prevent food poisoning from occurring. Can be. In addition, since it is easy to use and harmless to the human body, it can be used in hospitals and homes in the same manner as above without worry.

The sanitizing solution of the present invention is harmless to the human body and is composed of organic acids and the like that are recognized as food additives.

_{5 It} can also be added to foods such as tobacco, bread and confectionery to function as a preservative. Since the pH of the disinfecting solution is adjusted to about 2.5 to 4.0, a bactericidal effect can be easily obtained by selecting the pH in consideration of the taste of food, and furthermore, the generation of bacteria The bacteriostatic effect of preventing the bleeding can be maintained. Of course, even lower pH

, 0 It is possible to use it with a high sterilizing effect. Further, the disinfecting solution of the present invention can be used as a freshness preserving agent. Spraying on fresh food prevents bacterial spoilage, and furthermore has a deodorizing effect, thus eliminating spoilage. It is also possible to prevent the progress of decay. Alternatively, the bactericidal solution of the present invention is added to the water in a vase containing ikebana,

There is also a method for keeping freshness of ikebana for a long time. It can also be used when hydroponics vegetables such as sprouts and shellfish. In addition, it can be used for washing vegetables and the like, and can exert functions of disinfecting bacteria and maintaining freshness. By using the disinfecting solution of the present invention, the bactericidal effect is longer than the chlorine agent

Since 20 can be maintained, it is possible to effectively reduce germs. Since the occurrence of diseases and the like during growth can be prevented, and contamination by bacteria can be prevented, vegetables with higher safety can be provided. Further, the disinfecting solution of the present invention can be applied to other food fields such as tofu and konnyaku.

5 Needless to say, the method of using the disinfecting solution of the present invention is not limited to the above. For example, spraying on sheets to prevent bedsores, removing black mold in the washing machine, or spraying air conditioner filters to remove mold It is also possible to get rid of this because the drainage drain is a kind of mold. The effect can be obtained by directly injecting the disinfecting solution of the present invention into a drain port or the like. It is also sufficient to soak the disinfectant solution of the present invention in paper or cloth and wipe the object to be disinfected such as a toilet seat.

5 Bacterial effect can be obtained. Furthermore, it can be used for toweling. As described above, the disinfecting solution of the present invention is harmless to the human body, has an immediate bactericidal effect and a sustained bactericidal effect, and is a convenient form of use of an aqueous solution. It can be used in various fields. Further, the disinfecting solution of the present invention is odorless and has a deodorizing effect, and can be used in a wide range of fields including the food _field.c Therefore, the disinfecting solution of the present invention is equipped with a nebulizer. Various packages such as a package suitable for home use, a business package containing about 20 L of disinfecting solution, and a disinfecting sheet soaked in gauze tissue or a sheet for keeping freshness It can be provided in the form of a product.

As described above, the method for producing a disinfecting solution of the present invention makes it possible to produce a disinfecting solution containing copper ions (pure copper ions) eluted from pure copper. It is possible to provide a disinfecting solution having a high bactericidal effect and maintaining a bactericidal effect. The disinfecting solution of the present invention contains copper ions that are harmless when accumulated and organic acids contained in food additives as main components.

It is harmless to humans and odorless. Further, the disinfecting solution of the present invention is a liquid disinfecting solution having a long-lasting effect that can also have a deodorizing effect, and thus can be easily used for various applications as described above. A bactericidal effect can be easily obtained. Thus, according to the present invention, a disinfecting solution that can contribute to the industry and society in various fields in the future will be provided.

2 5 can be provided. Industrial applicability The disinfecting solution of the present invention is a disinfecting solution that contains harmless pure copper ions and is harmless to foods and the human body, but its disinfecting effect is extremely effective. It can be used in place of disinfectants or disinfectants such as system disinfectants, cutting boards for kitchens, kitchens, etc., equipment for food processing plants, tableware, schools, etc. It is the best disinfectant for patients.

Claims

The scope of the claims

1. A method for producing a disinfecting solution, comprising a mixing step of mixing powdered pure copper with water or an aqueous solution of an organic acid.

2. The method according to claim 1, wherein the mixing step includes a step of stirring a solution obtained by mixing the powdered pure copper with water or an aqueous solution of an organic acid.

3. The method according to claim 1, wherein the pure copper is electrolytic copper.

4. The method according to claim 1, wherein the organic acid is at least one selected from the group consisting of tartaric acid, citric acid, ascorbic acid, lactic acid, malic acid, and fumaric acid.

5. The method according to claim 4, wherein the pH of the aqueous solution is in the range of about 0.8 to 3.5.

6. The method for producing a sterilizing solution according to claim 1, wherein a strong electrolyte is dissolved in the water or the aqueous solution.

7. The method according to claim 6, wherein the strong electrolyte is salt.

8. A disinfecting solution produced by the method for producing a disinfecting solution according to claim 1.

9. A sanitizing solution mainly composed of an aqueous solution of an organic acid containing pure copper ions.

10. The sanitizing solution according to claim 9, wherein the organic acid is at least one of the group consisting of tartaric acid, cunic acid, ascorbic acid, lactic acid. Malic acid and fumaric acid.

11. The disinfecting solution according to claim 10, wherein the aqueous solution has a pH in the range of about 0.8 to 3.5.

1 2. A disinfecting medium comprising the disinfecting solution according to claim 9.