CN113080201A - Low-temperature disinfectant, preparation method thereof, manufacturing assembly and disinfection equipment - Google Patents
Low-temperature disinfectant, preparation method thereof, manufacturing assembly and disinfection equipment Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
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- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
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- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
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Abstract
The invention relates to a preparation method of a low-temperature disinfectant, which comprises the following steps: s1: preparing an original solution A with the mass concentration of 0.05-1%; s2: carrying out low-pressure electrolysis on the original solution A to generate an intermediate solution B; s3: mixing the intermediate material C with the weight percentage content of 40-60% with the intermediate solution B with the weight percentage content of 40-60% to obtain a low-temperature disinfectant; the raw solution A comprises one or more of hydrochloride or sulfate, and the intermediate material C is an alcohol organic matter. The low-temperature disinfectant prepared by the preparation method of the low-temperature disinfectant provided by the invention can resist the low temperature of-20 ℃, is not frozen under the condition of freezing for 8 hours, has no obvious sedimentation phenomenon, is low in price and good in sterilization and disinfection effects, and is extremely suitable for being applied to low-temperature sterilization and disinfection operation.
Description
Technical Field
The invention relates to a low-temperature disinfectant, a preparation method thereof, a low-temperature disinfectant manufacturing assembly and a disinfecting device comprising the manufacturing assembly.
Background
With the development of globalization, communication between countries and regions is more and more frequent. With the close economic communication, the increase of the flow of entry and exit personnel and materials brings huge pressure to disease prevention and control. The diseases not only threaten the life and property safety of people, but also influence the health and safety condition, import and export trade and economic culture exchange of people. The port product transportation process is one of the main ways for spreading epidemic situations at home and abroad. Therefore, port disinfection is critical to control. There are many products of killing on the existing market, can effectively kill all kinds of bacteria and viruses, nevertheless have huge breach on the disinfection of cold areas, cold-stored article, because along with the reduction of temperature, the disinfection effect of most disinfectant all greatly reduced, even became invalid, also often has the condition that the low temperature freezes and can't use. This problem is usually solved by increasing the concentration of disinfectant and delaying the disinfection time, but this increases the disinfection cost, increases the consumption of resources and reduces the efficiency of the disinfection operation, and the use of high concentrations of disinfectant is accompanied by many side effects in terms of corrosiveness, toxicity and pollution. The above reasons make the low-temperature killing operation difficult, so that many pathogenic bacteria cannot be killed thoroughly, and great challenge is provided for the disease prevention and control industry.
Disclosure of Invention
In view of the above-mentioned problems, the present invention provides a low-temperature disinfectant, a method of preparing the same, a manufacturing assembly for manufacturing the low-temperature disinfectant, and a sterilization apparatus including the manufacturing assembly.
A preparation method of a low-temperature disinfectant comprises the following steps:
s1: preparing an original solution A with the mass concentration of 0.05-1%;
s2: carrying out low-pressure electrolysis on the original solution A to generate an intermediate solution B;
s3: mixing the intermediate material C with the weight percentage content of 40-60% with the intermediate solution B with the weight percentage content of 40-60% to obtain a low-temperature disinfectant;
the raw solution A comprises one or more of hydrochloride or sulfate, and the intermediate material C is an alcohol organic matter.
In one embodiment, the stock solution a includes one or more of sodium chloride, potassium chloride, sodium sulfate, or magnesium sulfate.
In one embodiment, the intermediate material C comprises one or more of ethylene glycol, ethanol, 1, 2-propanediol, glycerol.
In one embodiment, in the step of S2, the electrolysis time is greater than or equal to 3 min.
In one embodiment, in the step of S2, the electrolysis time is 5-20 min.
In one embodiment, the low-temperature disinfectant is prepared by the preparation method of the low-temperature disinfectant.
A low-temperature disinfectant manufacturing assembly comprises a first supply part, a second supply part and a mixing container, wherein the first supply part supplies a disinfectant to the mixing container, the second supply part supplies alcohol organic matters to the mixing container, and the mixing container is used for mixing the disinfectant and the alcohol organic matters.
In one embodiment, the first supply portion includes a first electrolytic chamber including an anode, a proton exchange membrane, and a cathode arranged in this order.
The low-temperature disinfectant manufacturing assembly supplies low-temperature disinfectant to the spray head.
In one embodiment, a second electrolytic chamber is further arranged between the low-temperature disinfectant manufacturing assembly and the spray head, and the low-temperature disinfectant assembly is connected with the spray head through the second electrolytic chamber.
The invention has the beneficial effects that:
the low-temperature disinfectant prepared by the preparation method of the low-temperature disinfectant provided by the invention can resist the low temperature of-20 ℃, is not frozen under the condition of freezing for 8 hours, has no obvious sedimentation phenomenon, is low in price and good in sterilization and disinfection effects, and is extremely suitable for being applied to low-temperature sterilization and disinfection operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method of preparing a low-temperature disinfectant according to an embodiment.
Fig. 2 is a schematic view of the structure of the sterilizing apparatus.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the technical problem, the invention provides a low-temperature disinfectant which has strong freezing resistance, can not freeze at the temperature of minus 20 ℃ and has good sterilization and disinfection effects, and the preparation method of the low-temperature disinfectant comprises the following steps:
step S1: preparing an original solution A with the mass concentration of 0.05-1%.
Step S2: and carrying out low-pressure electrolysis on the original solution A to generate an intermediate solution B.
Step S3: and mixing the intermediate material C with the weight percentage of 40-60% with the intermediate solution B with the weight percentage of 40-60% to obtain the low-temperature disinfectant.
The raw solution A comprises one or more of hydrochloride or sulfate, and the intermediate material C is an alcohol organic matter.
The low-temperature disinfectant provided by the invention is prepared by the preparation method of the low-temperature disinfectant, comprises a disinfecting material and a low-temperature material, and is characterized in that the disinfecting material and the low-temperature material are mixed to achieve the aim that the disinfecting material has frost resistance at low temperature, and the disinfectant still has good sterilizing and disinfecting capability after being mixed.
Wherein, the original solution A with the mass concentration of 0.05 percent to 1 percent is put into an electrolytic cell and is electrolyzed at low pressure, so as to generate an intermediate solution B, and the intermediate solution B is the sterilizing material. Wherein the raw solution a comprises one or more of a hydrochloride or a sulfate, further, for example, the raw solution a comprises one or more of sodium chloride, potassium chloride, sodium sulfate, or magnesium sulfate, in one embodiment the raw solution a comprises sodium chloride and magnesium sulfate, in another embodiment the raw solution a comprises sodium chloride and potassium chloride, and the remaining embodiments are not necessarily described in a cumber.
In order to increase the concentration of the intermediate solution to improve the sterilization effect, for example, in the step S2, the electrolysis time is greater than or equal to 3min, and the raw solution a is circularly electrolyzed for more than 3min to increase the content of the sterilization component, and in a preferred embodiment, in the step S2, the electrolysis time is 5-20 min.
In order to enable the disinfection material to have low-temperature freezing resistance, a mode of mixing low-temperature materials is adopted. The antifreeze agent is also called as a freezing inhibitor, is a substance which is added into other liquid to reduce the freezing point and improve the freezing resistance, and also has the functions of dissolving ice crystals and preventing the growth of the ice crystals. The surface active agent type can enable materials to form a hydrophobic absorption film on the surface, such as acidic phosphate amine salt, alkylamine, fatty acid amide, organic acid ester, alkyl succinimide and the like. In the invention, alcohol organic matters are adopted as anti-freezing low-temperature materials to be mixed, the intermediate material C is a low-temperature material, preferably, the intermediate material C comprises one or more of ethylene glycol, ethanol, 1, 2-propylene glycol and glycerol, the alcohol of the above kind is adopted as a low-temperature material to reduce the toxicity of the low-temperature disinfectant and improve the safety, specifically, for example, the intermediate material C comprises ethylene glycol, and for example, the intermediate material is a mixed solution of ethylene glycol and ethanol, and other embodiments are not described in a encumbrance.
The low-temperature disinfectant prepared by the method can resist the low temperature of minus 20 ℃, is not frozen under the condition of freezing for 8 hours, has no obvious sedimentation phenomenon, has low price and good sterilization and disinfection effects, and is extremely suitable for being applied to refrigeration sterilization and disinfection operation.
1. Neutralizer identification test
1.1 test strains: escherichia coli (8099) with the generation number of 5, and preparing bacterial suspension with 0.03 mol/LPBS.
1.2 neutralizing agent: D/E neutralizes the broth.
1.3 neutralizer identification test: the test was carried out according to the neutralization agent identification test of 2.1.1.5 in technical Specification for Disinfection (2002), the test strain was Escherichia coli, the temperature of water bath was controlled at 19-21 deg.C, and the test was repeated 3 times.
TABLE 1
Wherein group 1 is "bacteria + disinfectant", group 2 is "(bacteria + disinfectant) + neutralizer"), group 3 is "bacteria + neutralizer", group 4 is "(disinfectant + neutralizer) + bacteria", and group 5 is "bacteria + diluent".
In 3 replicates: the stock solution is acted for 1min, the average growth colony number of 1 'bacteria and disinfectant' in the group is 5.23 multiplied by 104cfu/tablet, group 2 "(bacteria + disinfectant) + neutralizer" average number of growing colonies 8.43X 104cfu/tablet, more than 1 but far less than 3 "bacteria + neutralizer" and 4 "(disinfectant + neutralizer)Neutralizer) + bacteria ", group 5" bacteria + diluent ".
The identification result shows that: the neutralizing agent (D/E neutralizing broth) can effectively neutralize the action of the bactericidal components in the low-temperature disinfectant stock solution on the escherichia coli; and the neutralizing agent and the neutralized product have no influence on Escherichia coli and culture medium.
2. Sterilization effect detection
2.1 test strains: escherichia coli (8099), Staphylococcus aureus (ATCC6538), Pseudomonas aeruginosa (ATCC 15442). The generation number of the above strains is 4 th generation, and bacterial suspension is prepared by using the strain containing 0.03 mol/LPBS.
2.2 disinfectant stock solution: the low-temperature disinfectant is prepared by using 0.05-1% by mass of hydrochloride or sulfate as a raw material, performing low-pressure electrolysis, mixing alcohol organic matters after electrolysis, and refrigerating the prepared low-temperature disinfectant stock solution at-20 ℃ for more than 8 hours.
2.3 test group: and placing the bacterial sheet at the bottom of the container, and enabling the sample liquid to flow out of the container. After the action is carried out for a preset time, the bacterial slices are immediately put into a sterile test tube containing 5ml of PBS for viable bacteria culture counting.
2.4 the positive control group was counted by culturing viable bacteria in the same lot of the bacterial pellet used in the test. The negative control group was cultured with test medium or PBS inoculated medium, and observed for sterile growth.
2.5 test conditions: ambient temperature: 20 ℃, relative humidity: 58 percent.
TABLE 2
The results show that: the low-temperature disinfectant stock solution is refrigerated at the low temperature of minus 20 ℃ for more than 8 hours and acts for 1min, the killing log values of the low-temperature disinfectant stock solution on escherichia coli, staphylococcus aureus and pseudomonas aeruginosa are all more than 3.00, and the requirements of disinfection technical specifications (2002 edition) are met.
Treating with low temperature disinfectant stock solution for 1min, wherein the killing rate of Escherichia coli reaches 99.966%, and the killing rate of Escherichia coli reaches 99.999% after 5 min; treating with low temperature disinfectant stock solution for 1min to kill Staphylococcus aureus with a ratio of 99.997% for 5min and 99.999%; the low-temperature disinfectant stock solution is used for treating for 1min, the killing rate of the pseudomonas aeruginosa reaches 99.997 percent, the effect is 5min, and the killing rate of the pseudomonas aeruginosa reaches 99.999 percent.
The result shows that the low-temperature disinfectant prepared by the invention still has excellent sterilization and disinfection effects at the low temperature of-20 ℃, has high killing rate and high killing speed for various strains, and is suitable for low-temperature sterilization and disinfection operation.
Specific embodiments are provided below:
example 1
Step S1: preparing sodium chloride solution with mass concentration of 0.05-1%.
Step S2: and (3) putting the sodium chloride solution into an electrolytic cell for circulating electrolysis for 5 minutes to obtain the disinfection material. The cell current was about 3A and the voltage was about 14V. The cell was a PEM cell with conductive diamond as the anode and stainless steel as the cathode.
Step S3: mixing the disinfection material and the low-temperature material in a ratio of 4:6, and uniformly mixing to obtain the low-temperature disinfectant, wherein the low-temperature material is prepared by mixing ethylene glycol and ethanol in a ratio of 8:2 proportion of the mixture.
The low-temperature disinfectant obtained by the embodiment can be refrigerated for more than 12 hours at the temperature of minus 20 ℃ without freezing, and can be directly acted on the surface of an object or be used for sterilizing operation in a spraying mode and the like. When the low-temperature disinfectant is used for treating for 1min, the killing rate of escherichia coli reaches 99.968%, the killing rate of staphylococcus aureus reaches 99.995%, the killing rate of pseudomonas aeruginosa reaches 99.996%, the effect is 5min, the killing rate of escherichia coli reaches 99.999%, the killing rate of staphylococcus aureus reaches 99.999%, and the killing rate of pseudomonas aeruginosa reaches 99.999%.
Example 2
Step S1: preparing sodium chloride solution with mass concentration of 0.05-1%.
Step S2: and (3) putting the sodium chloride solution into an electrolytic cell for circulating electrolysis for 8 minutes to obtain the disinfection material. The cell current was about 3A and the voltage was about 14V. The cell was a PEM cell with conductive diamond as the anode and stainless steel as the cathode.
Step S3: mixing the disinfection material and the low-temperature material in a ratio of 4:6, and uniformly mixing to obtain the low-temperature disinfectant, wherein the low-temperature material is prepared by mixing ethylene glycol and ethanol in a ratio of 8:2 proportion of the mixture.
The low-temperature disinfectant obtained by the embodiment can be refrigerated for more than 12 hours at the temperature of minus 20 ℃ without freezing, and can be directly acted on the surface of an object or be used for sterilizing operation in a spraying mode and the like. When the low-temperature disinfectant is used for treating for 1min, the killing rate of escherichia coli reaches 99.971%, the killing rate of staphylococcus aureus reaches 99.996%, the killing rate of pseudomonas aeruginosa reaches 99.997%, the effect is 5min, the killing rate of escherichia coli reaches 99.999%, the killing rate of staphylococcus aureus reaches 99.999%, and the killing rate of pseudomonas aeruginosa reaches 99.999%.
Example 3
Step S1: preparing sodium chloride solution with mass concentration of 0.05-1%.
Step S2: and (3) putting the sodium chloride solution into an electrolytic cell for circulating electrolysis for 5 minutes to obtain the disinfection material. The cell current was about 3A and the voltage was about 14V. The cell was a PEM cell with conductive diamond as the anode and stainless steel as the cathode.
Step S3: mixing the disinfection material and the low-temperature material in a ratio of 5:5, and uniformly mixing to obtain the low-temperature disinfectant, wherein the low-temperature material is prepared by mixing ethylene glycol and ethanol in a ratio of 8:2 proportion of the mixture.
The low-temperature disinfectant obtained by the embodiment can be refrigerated for more than 8 hours at the temperature of minus 20 ℃ without freezing, and can be directly acted on the surface of an object or be used for sterilizing operation in a spraying mode and the like. When the low-temperature disinfectant is used for treating for 1min, the killing rate of escherichia coli reaches 99.974%, the killing rate of staphylococcus aureus reaches 99.997%, the killing rate of pseudomonas aeruginosa reaches 99.997%, the effect is 5min, the killing rate of escherichia coli reaches 99.999%, the killing rate of staphylococcus aureus reaches 99.999%, and the killing rate of pseudomonas aeruginosa reaches 99.999%.
Example 4
Step S1: preparing an original solution A with the mass concentration of 0.05-1%, wherein the original solution A comprises sodium chloride and potassium chloride which are mixed in a ratio of 8: 2.
Step S2: and (3) putting the original solution A into an electrolytic cell for circulating electrolysis for 5 minutes to obtain the disinfection material. The cell current was about 3A and the voltage was about 14V. The electrolytic cell is a PEM electrolytic cell, the anode is platinum and the cathode is stainless steel.
Step S3: mixing the disinfection material and the low-temperature material in a ratio of 4:6, and uniformly mixing to obtain the low-temperature disinfectant, wherein the low-temperature material is prepared by mixing ethylene glycol and glycerol in a ratio of 8:2 proportion of the mixture.
The low-temperature disinfectant obtained by the embodiment can be refrigerated for more than 12 hours at the temperature of minus 20 ℃ without freezing, and can be directly acted on the surface of an object or be used for sterilizing operation in a spraying mode and the like. When the low-temperature disinfectant is used for treating for 1min, the killing rate of escherichia coli reaches 99.967%, the killing rate of staphylococcus aureus reaches 99.996%, the killing rate of pseudomonas aeruginosa reaches 99.996%, the effect is 5min, the killing rate of escherichia coli reaches 99.999%, the killing rate of staphylococcus aureus reaches 99.999%, and the killing rate of pseudomonas aeruginosa reaches 99.999%.
Further examples of disinfectant preparation methods, the present invention is not described in a single drag.
The present invention also provides a low-temperature disinfectant manufacturing assembly 200, which can be used for manufacturing a low-temperature disinfectant by the above-mentioned manufacturing method, and comprises a first supply part, a second supply part 230 and a mixing container 220, wherein the first supply part supplies a disinfectant to the mixing container 220, the disinfectant is the above-mentioned intermediate solution B, the second supply part 230 supplies an alcohol organic substance to the mixing container 220, the alcohol organic substance is the above-mentioned intermediate material C, the mixing container 220 is used for mixing the disinfectant and the alcohol organic substance, that is, the first supply part supplies the disinfectant (intermediate solution B), and the second supply part 230 supplies the low-temperature material (intermediate material C) to the mixing container 220 for mixing, so as to generate the low-temperature disinfectant.
Further, in order to supply the sterilizing material (intermediate solution B) to the first supply unit, for example, the first supply unit includes a first electrolytic chamber 210, the first electrolytic chamber 210 includes an anode, a proton exchange membrane, and a cathode, which are sequentially disposed, and the electrolytic solution (raw solution a) is supplied into the first electrolytic chamber 210 to be electrolyzed at a low pressure, for example, a raw solution a supply pipe 211 is connected to the first electrolytic chamber 210, and the sterilizing material (intermediate solution B) generated by the low-pressure electrolysis of the raw solution a is transferred into a mixing container 220 to be mixed with the low-temperature material (intermediate material C). For example, the anode is made of conductive diamond, for example, the anode is made of platinum, for example, the anode is made of a composite metal, for example, the anode is made of another noble metal, for example, the cathode is made of stainless steel, and the cathode can be made of another material. The present embodiment does not describe each other.
A disinfection device comprises the low-temperature disinfectant manufacturing assembly 200 and a spray head 400, wherein the low-temperature disinfectant manufacturing assembly 200 supplies the low-temperature disinfectant to the spray head 400, the spray head can be a spray type spray head or an atomizing type spray head, the low-temperature disinfectant is sprayed to the surface of an object through the spray head to realize disinfection operation, and the low-temperature disinfectant can be applied to disinfection of the surface of a refrigerated object at a low temperature of 20 ℃ below zero.
In order to provide the content of the sterilizing component in the low-temperature sterilizing agent, for example, in one embodiment, a second electrolytic chamber 300 is further disposed between the low-temperature sterilizing agent manufacturing assembly 200 and the spray head 400, the low-temperature sterilizing agent manufacturing assembly 200 is connected with the spray head 400 through the second electrolytic chamber 300, the mixed low-temperature sterilizing agent (the mixture of the low-temperature material and the sterilizing material) is electrolyzed again before being sprayed, and the second electrolytic chamber 300 is a PEM electrolytic cell to increase the content of the sterilizing component.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The preparation method of the low-temperature disinfectant is characterized by comprising the following steps of:
s1: preparing an original solution A with the mass concentration of 0.05-1%;
s2: carrying out low-pressure electrolysis on the original solution A to generate an intermediate solution B;
s3: mixing the intermediate material C with the weight percentage content of 40-60% with the intermediate solution B with the weight percentage content of 40-60% to obtain a low-temperature disinfectant;
the raw solution A comprises one or more of hydrochloride or sulfate, and the intermediate material C is an alcohol organic matter.
2. The method for preparing a low-temperature disinfectant according to claim 1, wherein the raw solution A comprises one or more of sodium chloride, potassium chloride, sodium sulfate or magnesium sulfate.
3. The method for preparing a low-temperature disinfectant according to claim 1, wherein the intermediate material C comprises one or more of ethylene glycol, ethanol, 1, 2-propylene glycol and glycerol.
4. The method for preparing a low-temperature disinfectant according to claim 1, wherein an electrolysis time is 3min or more in the step of S2.
5. The method for preparing a low-temperature disinfectant according to claim 1, wherein an electrolysis time is 5 to 20min in the step of S2.
6. A low-temperature disinfectant, which is prepared by the method for preparing a low-temperature disinfectant as claimed in claims 1-5.
7. A low-temperature disinfectant producing module is characterized by comprising a first supply part, a second supply part and a mixing container, wherein the first supply part supplies a disinfectant to the mixing container, the second supply part supplies an alcohol organic substance to the mixing container, and the mixing container is used for mixing the disinfectant and the alcohol organic substance.
8. A low temperature sterilant manufacturing assembly according to claim 7 wherein the first supply comprises a first electrolytic chamber comprising an anode, a proton exchange membrane and a cathode arranged in series.
9. A sterilizing apparatus comprising a spray head and a low-temperature disinfectant manufacturing module as claimed in claim 7, said low-temperature disinfectant manufacturing module supplying a low-temperature disinfectant to said spray head.
10. The sterilizing apparatus defined in claim 9 wherein a second electrolytic chamber is also provided between the low temperature disinfectant manufacturing assembly and the spray head, the low temperature disinfectant assembly being connected to the spray head through the second electrolytic chamber.
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