CN116726066B - Antibacterial gel composition and preparation method thereof - Google Patents

Antibacterial gel composition and preparation method thereof Download PDF

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CN116726066B
CN116726066B CN202310928946.3A CN202310928946A CN116726066B CN 116726066 B CN116726066 B CN 116726066B CN 202310928946 A CN202310928946 A CN 202310928946A CN 116726066 B CN116726066 B CN 116726066B
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gel composition
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ammonium salt
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CN116726066A (en
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许周发
刘浩然
高国民
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Zhongke Wankang Pharmaceutical Guangzhou Co ltd
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    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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    • A61K2236/19Preparation or pretreatment of starting material involving fermentation using yeast, bacteria or both; enzymatic treatment

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Abstract

The invention belongs to the technical field of antibacterial compositions, and discloses a slow-release antibacterial gel composition and a preparation method thereof. The slow-release antibacterial gel composition comprises the following components in percentage by mass: 0.18 to 0.22 percent of chlorhexidine gluconate; 6-15% of ethanol; 0.2 to 0.5 percent of notoginseng fermentation extract; 0.3 to 0.8 percent of rosewood heart wood extract; 0.5 to 1 percent of frankincense extract; 0.5 to 1 percent of polysiloxane quaternary ammonium salt; cyclodextrin 1-5%; the balance of water. The antibacterial gel composition adopts polysiloxane quaternary ammonium salt and notoginseng fermentation extract, rosewood heart wood extract and frankincense extract and chlorhexidine gluconate as antibacterial components, and has the advantages of high antibacterial activity, stable antibacterial activity, small irritation and mild formula.

Description

Antibacterial gel composition and preparation method thereof
Technical Field
The invention belongs to the technical field of antibacterial compositions, and particularly relates to a slow-release antibacterial gel composition and a preparation method thereof.
Background
Disposable sanitary articles are various daily necessities which are discarded after being used once, are in direct or indirect contact with human bodies, and are used for achieving the purposes of human physiological sanitation or health care antibacterial or bacteriostatic, and the antibacterial gel is a disposable sanitary article widely used by people in daily life.
As patent CN 111467249A, a no-clean antibacterial gel is disclosed, which consists of polyhexamethylene biguanide hydrochloride, dichlorobenzyl alcohol, sodium hyaluronate gel, glycerin, propylene glycol, hypromellose, polyether, hydroxyethyl urea and purified water. The bactericide is formed by compounding dichlorobenzyl alcohol and polyhexamethylene biguanide hydrochloride, so that the sterilizing effect is effectively improved. Patent CN 109432201A discloses a gynecological antibacterial gel, which is prepared from poloxamer, electrolytic silver ion antibacterial agent and glycerin, wherein the silver ion concentration of the electrolytic silver ion antibacterial agent is controlled to be matched with the poloxamer and the glycerin within a proper content range, so that a pasty gel which has a slow release effect and can adapt the phase change temperature to the temperature of a human body and stay in the vagina for a long time is formed, and meanwhile, the antibacterial performance can be well exerted. In addition, after the electrolytic silver ion antibacterial agent, the chamomile extract and the rose extract are compounded, the antibacterial and bactericidal effects are better, the adhesive performance of the pasty gel on the inner wall of the vagina can be maintained, and the long-time drug effect is maintained. Patent CN 107028875A discloses a polyamino acid antibacterial gel, which comprises the following components in percentage by weight: 0.01-50% of polyamino acid, 0.01-90% of gel matrix, 0-20% of humectant, 0-1% of preservative and the balance of water. The polyamino acid gel combines the advantages of both polyamino acid materials and gel, and has good antibacterial property and biocompatibility.
However, the antibacterial composition generally has the problems of complex antibacterial components or narrow application range, so that the development of the antibacterial gel composition with mild components, good antibacterial effect and strong compatibility adaptability and the preparation method thereof have remarkable market value.
Disclosure of Invention
In view of the above drawbacks and deficiencies of the prior art, a primary object of the present invention is to provide a slow-release antimicrobial gel composition.
Another object of the present invention is to provide a method for preparing the above sustained-release antibacterial gel composition.
The invention aims at realizing the following technical scheme:
a slow-release antibacterial gel composition comprises the following components in percentage by mass:
preferably, the slow-release antibacterial gel composition comprises the following components in percentage by mass:
further, the notoginseng fermentation extract is prepared by the following method:
adding the pseudo-ginseng powder into water, sterilizing at 105-120 ℃ for 15-30 min, cooling, inoculating zymophyte bacterial liquid, fermenting and culturing at 35-40 ℃ for 24-120 h, centrifuging after sterilizing at high temperature, collecting supernatant and concentrating to obtain the pseudo-ginseng fermentation extract.
The preparation method of the notoginseng fermentation extract has the advantages of high extraction rate and high product activity.
Further preferably, the fermentation broth is a mixed fermentation broth containing bacillus subtilis and saccharomycetes.
Further preferably, the zymophyte bacterial liquid adopts glucose with the mass concentration of 1.5-2.5%, peptone with the mass concentration of 0.5-1%, yeast extract with the mass concentration of 0.5-1%, monopotassium phosphate with the mass concentration of 0.02-0.1% and calcium carbonate with the mass concentration of 0.02-0.1% as culture medium components.
Further, the polysiloxane quaternary ammonium salt refers to a polysiloxane quaternary ammonium salt with a ring structure, and the polysiloxane quaternary ammonium salt is prepared by the following method:
adding tetramethyl cyclotetrasiloxane (D4H) and vinyl-containing alkoxy silane compound into ethanol solvent, adding chloroplatinic acid catalyst, stirring and mixing uniformly, heating to 75-80 ℃ under nitrogen protection for reaction, adding dimethyl octadecyl [3- (trimethoxy silicon-based) propyl ] ammonium chloride (DC-5700), stirring and dissolving uniformly, dripping water for coupling reaction, and vacuum pumping out solvent and low-boiling substances to obtain polysiloxane quaternary ammonium salt with a cyclic structure.
The invention adopts polysiloxane quaternary ammonium salt with specific cyclic structure and chlorhexidine gluconate as main antibacterial components, and has the advantages of high antibacterial activity, small irritation and strong compatibility adaptability. Meanwhile, the polysiloxane quaternary ammonium salt with the cyclic structure has good compatibility in a system, and the surface activity of the polysiloxane quaternary ammonium salt is combined with cyclodextrin to wrap the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, so that a certain slow release effect is achieved, and the system stability is improved.
Further preferably, the vinyl-containing alkoxysilane compound includes at least one of vinyltrimethoxysilane and vinyltriethoxysilane; the addition amount of the vinyl-containing alkoxysilane compound is 3-4 times of the molar amount of the tetramethyl cyclotetrasiloxane.
Further preferably, the addition amount of the dimethyloctadecyl [3- (trimethoxysilyl) propyl ] ammonium chloride is 1 to 3 times the molar amount of the vinyl-containing alkoxysilane compound.
The preparation method of the slow-release antibacterial gel composition comprises the following preparation steps:
adding chlorhexidine gluconate into a mixed solvent of water and ethanol for dissolving uniformly, heating to 50-80 ℃, adding cyclodextrin and polysiloxane quaternary ammonium salt, stirring for dissolving uniformly, cooling to below 60 ℃, sequentially adding the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, stirring for mixing uniformly, and standing for more than 24 hours to obtain the slow-release antibacterial gel composition.
Compared with the prior art, the invention has the beneficial effects that:
(1) The antibacterial gel composition adopts chlorhexidine gluconate and polysiloxane quaternary ammonium salt with a specific cyclic structure as main antibacterial components, and has the advantages of high antibacterial activity, small irritation and strong compatibility adaptability.
(2) The antibacterial gel composition disclosed by the invention can wrap the pseudo-ginseng fermentation extract, the rosewood heart wood extract and the frankincense extract by utilizing the surface activity of the polysiloxane quaternary ammonium salt with a cyclic structure and the cyclodextrin, so that a certain slow release effect is achieved, and the system stability is improved.
(3) The invention further adopts the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract as the active ingredients with the functions of resisting bacteria and resisting inflammation, and has the advantages of stable antibacterial activity and mild formula.
(4) The existing extraction process of the total saponins of panax notoginseng mainly comprises a water decoction and alcohol precipitation method, an ethanol reflux method and a percolation method. Wherein the water decoction and alcohol precipitation method is easy to gelatinize because the notoginseng contains a large amount of starch and polysaccharide in the water decoction process; after alcohol precipitation, the saponin loss is large due to the adsorption effect of precipitation, the extraction rate is low, the content of the product components is not stable, and the method is widely used for developing food; the percolation method has higher extraction rate, simple operation and less impurity in the extracting solution, but excessive solvent consumption, and is mainly used for medicines; the ethanol reflux method is simple and convenient, the process condition is easy to control, but the extraction rate is lower. Compared with the existing method, the preparation method of the notoginseng fermentation extract has the advantages of high extraction rate and high product activity.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1
The slow-release antibacterial gel composition comprises the following components in percentage by mass:
the notoginseng fermentation extract is prepared by the following method:
adding notoginseng powder with the mass fraction of 8% into water, sterilizing at the high temperature of 110 ℃ for 20min, cooling, and inoculating fermentation bacteria liquid, wherein the fermentation bacteria liquid is mixed fermentation bacteria liquid containing bacillus subtilis and saccharomycetes. The fermentation bacteria liquid adopts glucose with the mass concentration of 2 percent, peptone with the mass concentration of 0.8 percent, yeast extract with the mass concentration of 0.6 percent, monopotassium phosphate with the mass concentration of 0.03 percent and calcium carbonate with the mass concentration of 0.02 percent as culture medium components. Then fermenting and culturing for 48h under the condition of a shaking table at the temperature of 35-40 ℃, sterilizing at the high temperature of 110 ℃, centrifuging, taking supernatant, and concentrating to obtain the notoginseng fermentation extract.
The polysiloxane quaternary ammonium salt refers to a polysiloxane quaternary ammonium salt with a ring structure, and is prepared by the following method:
adding tetramethyl cyclotetrasiloxane (D4H) and vinyl trimethoxy silane into an ethanol solvent, wherein the molar ratio of the D4H to the vinyl trimethoxy silane is 1:4, then adding a catalytic amount of chloroplatinic acid isopropanol solution, stirring and mixing uniformly, heating to 75-80 ℃ under the protection of nitrogen, stirring and reacting for 4 hours, adding dimethyl octadecyl [3- (trimethoxy silicon) propyl ] ammonium chloride (DC-5700), stirring and dissolving uniformly, adding a proper amount of water (the theoretical amount of all hydrolysis of the vinyl trimethoxy silane and the DC-5700) in a dropwise manner, and carrying out coupling reaction to obtain the polysiloxane quaternary ammonium salt with a cyclic structure.
The preparation method of the slow-release antibacterial gel composition comprises the following preparation steps:
adding chlorhexidine gluconate into a mixed solvent of water and ethanol for dissolving uniformly, heating to 70-75 ℃, adding cyclodextrin and polysiloxane quaternary ammonium salt, stirring for dissolving uniformly, cooling to below 60 ℃, sequentially adding the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, stirring for mixing uniformly, and standing for more than 24 hours to obtain the slow-release antibacterial gel composition.
Example 2
The slow-release antibacterial gel composition comprises the following components in percentage by mass:
the notoginseng fermentation extract is prepared by the following method:
adding 10% of pseudo-ginseng powder into water according to the mass fraction, sterilizing at 105 ℃ for 30min, cooling, and inoculating fermentation bacteria liquid, wherein the fermentation bacteria liquid is mixed fermentation bacteria liquid containing bacillus subtilis and saccharomycetes. The fermentation bacteria liquid adopts glucose with the mass concentration of 1.5%, 1% peptone, 1% yeast extract, 0.05% monopotassium phosphate and 0.05% calcium carbonate as culture medium components. Then fermenting and culturing for 72h under the condition of a shaking table at the temperature of 35-40 ℃, sterilizing at the high temperature of 105 ℃, centrifuging, taking supernatant, and concentrating to obtain the notoginseng fermentation extract.
The polysiloxane quaternary ammonium salt refers to a polysiloxane quaternary ammonium salt with a ring structure, and is prepared by the following method:
adding tetramethyl cyclotetrasiloxane (D4H) and vinyl triethoxysilane into an ethanol solvent, wherein the molar ratio of the D4H to the vinyl triethoxysilane is 1:3, then adding a catalytic amount of chloroplatinic acid isopropanol solution, stirring and mixing uniformly, heating to 75-80 ℃ under the protection of nitrogen, stirring and reacting for 3 hours, adding dimethyl octadecyl [3- (trimethoxy silicon) propyl ] ammonium chloride (DC-5700), stirring and dissolving uniformly after the reaction is finished, dropwise adding a proper amount of water (the theoretical amount of vinyl triethoxysilane and all hydrolysis of DC-5700) for coupling reaction, and vacuum pumping the solvent and low-boiling-point substances to obtain the polysiloxane quaternary ammonium salt with the annular structure.
The preparation method of the slow-release antibacterial gel composition comprises the following preparation steps:
adding chlorhexidine gluconate into a mixed solvent of water and ethanol for dissolving uniformly, heating to 60-65 ℃, adding cyclodextrin and polysiloxane quaternary ammonium salt, stirring for dissolving uniformly, cooling to below 60 ℃, sequentially adding the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, stirring for mixing uniformly, and standing for more than 24 hours to obtain the slow-release antibacterial gel composition.
Example 3
The slow-release antibacterial gel composition comprises the following components in percentage by mass:
the notoginseng fermentation extract is prepared by the following method:
adding 6% of notoginseng powder into water according to the mass fraction, sterilizing at 115 ℃ for 15min, cooling, and inoculating fermentation bacteria liquid, wherein the fermentation bacteria liquid is mixed fermentation bacteria liquid containing bacillus subtilis and saccharomycetes. The fermentation bacteria liquid adopts glucose with the mass concentration of 2.5 percent, peptone with the mass concentration of 0.5 percent, yeast extract with the mass concentration of 0.5 percent, monopotassium phosphate with the mass concentration of 0.02 percent and calcium carbonate with the mass concentration of 0.02 percent as culture medium components. Then fermenting and culturing for 36h under the condition of a shaking table at the temperature of 35-40 ℃, sterilizing at the high temperature of 115 ℃, centrifuging, taking supernatant, and concentrating to obtain the notoginseng fermentation extract.
The polysiloxane quaternary ammonium salt refers to a polysiloxane quaternary ammonium salt with a ring structure, and is prepared by the following method:
adding tetramethyl cyclotetrasiloxane (D4H) and vinyl trimethoxy silane into an ethanol solvent, wherein the molar ratio of the D4H to the vinyl trimethoxy silane is 1:3.5, then adding a catalytic amount of chloroplatinic acid isopropanol solution, stirring and mixing uniformly, heating to 75-80 ℃ under the protection of nitrogen, stirring and reacting for 3.5H, adding dimethyl octadecyl [3- (trimethoxy silicon) propyl ] ammonium chloride (DC-5700), stirring and dissolving uniformly after the reaction is finished, adding an amount of DC-5700 which is 2 times the molar amount of the vinyl trimethoxy silane, dropwise adding a proper amount of water (the theoretical amount of the vinyl trimethoxy silane and the total hydrolysis of the DC-5700), performing coupling reaction, and vacuum pumping the solvent and low-boiling substances to obtain the polysiloxane quaternary ammonium salt with a cyclic structure.
The preparation method of the slow-release antibacterial gel composition comprises the following preparation steps:
adding chlorhexidine gluconate into a mixed solvent of water and ethanol for dissolving uniformly, heating to 75-80 ℃, adding cyclodextrin and polysiloxane quaternary ammonium salt, stirring for dissolving uniformly, cooling to below 60 ℃, sequentially adding the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, stirring for mixing uniformly, and standing for more than 24 hours to obtain the slow-release antibacterial gel composition.
1. The antibacterial gel composition obtained in the above example was subjected to antibacterial performance test, and was tested with reference to appendix C4 of GB 15979-2002 hygienic Standard for Disposable sanitary products, the test strain being Escherichia coli; the sample is used for primary action for 2min, 5min, 10min and 20min, the test is repeated for 3 times to obtain an average value, and the test temperature is 23 ℃. The test results are shown in table 1 below.
TABLE 1 antibacterial Property test results
As can be seen from the results in Table 1, the antibacterial gel composition provided by the invention has the antibacterial rate of more than 95% on Escherichia coli after being acted for 2min, 5min, 10min and 20min, and has a strong antibacterial effect.
2. The antibacterial gel composition obtained in the above example was subjected to a mildness test, and the gel composition was applied to the skin, covered with a patch, and after 24 hours, the test article was removed and the skin reaction was observed, as described in appendix A3 of GB 15979-2002 "Disposable sanitary articles sanitary Standard". The grading scale is as follows: no significant response compared to the blank was grade 0; weak erythema was grade 1; erythema reaction (erythema, infiltration, edema, possibly papule) was grade 2; the occurrence of herpes response (erythema, infiltration, edema, papule, herpes; response can exceed the test area) was grade 3; the appearance of the fusional herpes response (apparent erythema, severe infiltration, edema, fusional herpes; response beyond the test zone) was grade 4. The test results are shown in table 2 below.
Table 2 mildness test results
Test sample Example 1 Example 2 Example 3
Mild grade Level 0 Level 0 Level 0
As can be seen from the results in Table 2, the antibacterial gel composition obtained by the invention has small irritation and mild formulation.
3. The antibacterial gel composition obtained in the above example was subjected to stability test, and the gel morphology was observed and the antibacterial rate (10 min) was tested by using an acceleration test in a incubator at 54 to 57 ℃ for 14 days, with reference to annex C6 of GB 15979-2002 hygienic Standard for disposable sanitary products, and the results are shown in Table 3 below.
TABLE 3 stability test results
Test sample Example 1 Example 2 Example 3
Gel morphology Liquid without sediment and obvious flowing Liquid without sediment and obvious flowing Liquid without sediment and obvious flowing
Antibacterial rate 99.67% 99.08% 99.25%
As can be seen from the results in Table 3, the antibacterial gel composition obtained by the invention has excellent high temperature resistance stability and antibacterial stability.
Comparative example 1
In this comparative example, the Notoginseng radix fermented extract, the lignum Dalbergiae Odoriferae extract and the Olibanum extract were not added, and the mass percentage of the remaining effective components was unchanged, compared with example 1.
Comparative example 2
In this comparative example, the mass percent of the remaining effective components was unchanged from example 1 without the addition of a silicone quaternary ammonium salt.
Comparative example 3
Compared with the example 1, the comparative example adopts equivalent DC-5700 antibacterial agent to replace polysiloxane quaternary ammonium salt, and the mass percentage of the rest effective matters is unchanged.
4. The antibacterial property test was conducted on the antibacterial gel composition obtained in the above comparative example, and the results are shown in table 4 below.
TABLE 4 antibacterial Property test results
As can be seen from the results in Table 4, the Notoginseng radix fermented extract, the rosewood heart wood extract and the olibanum extract, and the polysiloxane quaternary ammonium salt in the antibacterial gel composition of the present invention have obvious synergistic effect on the improvement of antibacterial properties.
5. The antibacterial gel composition obtained in the above comparative example was subjected to a mildness test, and the results are shown in table 5 below.
TABLE 5 mildness test results
Test sample Comparative example 1 Comparative example 2 Comparative example 3
Mild grade Level 1 Level 1 Level 1
As can be seen from the results of Table 5, the Notoginseng radix fermented extract, the rosewood extract and the olibanum extract, and the polysiloxane quaternary ammonium salt with a specific cyclic structure in the antibacterial gel composition of the present invention can reduce the irritation of the antibacterial gel composition of the present invention, and the polysiloxane quaternary ammonium salt with a specific cyclic structure has better mildness than the DC-5700 antibacterial agent.
6. The antibacterial gel composition obtained in the above comparative example was subjected to stability test, and the results are shown in table 6 below.
TABLE 6 stability test results
As can be seen from the results in Table 6, the Notoginseng radix fermented extract, the rosewood heart wood extract and the olibanum extract have an improvement effect on the antibacterial stability of the antibacterial gel composition of the present invention, and the polysiloxane quaternary ammonium salt with a specific cyclic structure has an obvious improvement effect on the gel form stability and antibacterial stability of the antibacterial gel composition.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (4)

1. An antibacterial gel composition is characterized by comprising the following components in percentage by mass:
0.18% -0.22% of chlorhexidine gluconate;
6% -15% of ethanol;
0.2% -0.5% of notoginseng fermentation extract;
0.3-0.8% of rosewood heart wood extract;
0.5% -1% of frankincense extract;
0.5% -1% of polysiloxane quaternary ammonium salt;
cyclodextrin 1% -5%;
the balance of water;
the notoginseng fermentation extract is prepared by the following method:
adding the pseudo-ginseng powder into water, sterilizing at a high temperature of 105-120 ℃ for 15-30 min, cooling, inoculating zymophyte bacterial liquid, fermenting and culturing at a temperature of 35-40 ℃ for 24-120 h, centrifuging after sterilizing at a high temperature, and concentrating the supernatant to obtain a pseudo-ginseng fermentation extract;
the zymophyte liquid is mixed zymophyte liquid containing bacillus subtilis and saccharomycetes;
the polysiloxane quaternary ammonium salt refers to a polysiloxane quaternary ammonium salt with a ring structure, and is prepared by the following method:
adding tetramethyl cyclotetrasiloxane and vinyl-containing alkoxy silane compound into ethanol solvent, adding chloroplatinic acid catalyst, stirring and mixing uniformly, heating to 75-80 ℃ under nitrogen protection for reaction, adding dimethyl octadecyl [3- (trimethoxy silicon base) propyl ] ammonium chloride after the reaction is completed, stirring and dissolving uniformly, dripping water for coupling reaction, and vacuum pumping out solvent and low-boiling substances to obtain polysiloxane quaternary ammonium salt with a cyclic structure;
the vinyl-containing alkoxysilane compound includes at least one of vinyltrimethoxysilane and vinyltriethoxysilane; the addition amount of the vinyl-containing alkoxy silane compound is 3-4 times of the molar amount of the tetramethyl cyclotetrasiloxane; the addition amount of the dimethyl octadecyl [3- (trimethoxy silicon based) propyl ] ammonium chloride is 1-3 times of the molar amount of the vinyl-containing alkoxysilane compound.
2. An antimicrobial gel composition according to claim 1, wherein the antimicrobial gel composition comprises the following components in percentage by mass:
chlorhexidine gluconate 0.2%;
ethanol 10%;
0.3% of notoginseng fermented extract;
0.5% of rosewood heart wood extract;
0.7% of olibanum extract;
0.8% of polysiloxane quaternary ammonium salt;
cyclodextrin 3%;
84.5% of water.
3. The antibacterial gel composition according to claim 1, wherein the fermentation broth adopts glucose with a mass concentration of 1.5% -2.5%, peptone with a mass concentration of 0.5% -1%, yeast extract with a mass concentration of 0.5% -1%, monopotassium phosphate with a mass concentration of 0.02% -0.1%, and calcium carbonate with a mass concentration of 0.02% -0.1% as culture medium components.
4. A method for preparing an antibacterial gel composition according to any one of claims 1 to 3, comprising the steps of:
and adding chlorhexidine gluconate into a mixed solvent of water and ethanol to be uniformly dissolved, heating to 50-80 ℃, adding cyclodextrin and polysiloxane quaternary ammonium salt, uniformly stirring and dissolving, cooling to below 60 ℃, sequentially adding the notoginseng fermentation extract, the rosewood heart wood extract and the frankincense extract, uniformly stirring and mixing, and standing for more than 24 hours to obtain the antibacterial gel composition.
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CN108420980A (en) * 2018-05-30 2018-08-21 武汉润禾生物医药有限公司 It is a kind of treat skin injury, bacterium infection antibacterial ointment and preparation method thereof
CN111620988A (en) * 2020-06-15 2020-09-04 张玉花 Long-acting antibacterial dressing and preparation method thereof
CN112245495A (en) * 2020-11-21 2021-01-22 陕西远志医药生物工程有限公司 Slow-release antibacterial gel and preparation method thereof

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CN108420980A (en) * 2018-05-30 2018-08-21 武汉润禾生物医药有限公司 It is a kind of treat skin injury, bacterium infection antibacterial ointment and preparation method thereof
CN111620988A (en) * 2020-06-15 2020-09-04 张玉花 Long-acting antibacterial dressing and preparation method thereof
CN112245495A (en) * 2020-11-21 2021-01-22 陕西远志医药生物工程有限公司 Slow-release antibacterial gel and preparation method thereof

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