Composite antibacterial daily chemical additive based on a shurb extract and a preparation method thereof

Abstract

The application discloses a composite antibacterial daily chemical additive based on a shurbly tree extract and a preparation method thereof, relates to the field of daily chemical additives, and contains the following raw materials in parts by weight: shurbly tree extract 20-50 parts, synergistic antibacterial agent 10-30 parts, stabilizer 5-15 parts, dispersing agent 3-10 parts, and solvent in the rest amount; the composite antibacterial daily chemical additive based on the shurbly tree extract and the preparation method thereof introduce the synergistic antibacterial agent, such as tea tree oil, rosemary extract and garlicin, cooperate with the shurbly tree extract, and produce a strong synergistic antibacterial effect. This not only greatly prolongs the antibacterial time, enables the hand sanitizer to realize persistent antibacterial effect for more than several hours, enables the laundry detergent to be effective after multiple washes, but also realizes broad-spectrum and efficient antibacterial effect, and can cope with various microbial environments. Meanwhile, the added stabilizer such as beta-cyclodextrin effectively protects the active ingredients, prevents the active ingredients from being decomposed and disabled by external environment, and enables the additive to have high stability.

Description

Technical Field

[0001] This invention relates to the technology of daily chemical additives, specifically to a compound antibacterial daily chemical additive based on Caragana korshinskii extract and its preparation method. Background Technology

[0002] As people's living standards improve, the requirements for the antibacterial properties of daily chemical products are also increasing. Traditional antibacterial agents are mostly chemically synthesized substances, and long-term use may have adverse effects on human health and the environment. Therefore, developing natural, safe, and efficient antibacterial agents has become a research hotspot in the daily chemical industry. Caragana korshinskii, as a natural plant, has extracts with broad-spectrum antibacterial activity, but the antibacterial effect of a single extract is short-lived, making it difficult to meet the needs of different application scenarios. Therefore, developing a compound antibacterial daily chemical additive based on Caragana korshinskii extract to solve the problem of short-lived antibacterial effect of single extracts and to be compatible with various washing and cleaning products is of significant practical importance. Summary of the Invention

[0003] The purpose of this invention is to provide a compound antibacterial daily chemical additive based on Caragana korshinskii extract and its preparation method, in order to solve the problems of poor antibacterial performance of existing daily chemical products, and the fact that traditional antibacterial agents are mostly chemically synthesized substances, which may have adverse effects on human health and the environment with long-term use.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a compound antibacterial daily chemical additive based on *Caragana korshinskii* extract, comprising the following raw materials in parts by weight: 20-50 parts of *Caragana korshinskii* extract, 10-30 parts of a synergistic antibacterial agent, 5-15 parts of a stabilizer, 3-10 parts of a dispersant, and the remainder being solvent; wherein the synergistic antibacterial agent is selected from at least two of tea tree oil, rosemary extract, and allicin; the stabilizer is cyclodextrin; the dispersant is a nonionic surfactant; and the solvent is water or an alcohol solvent.

[0005] Furthermore, the Caragana extract is prepared by the following steps: selecting fresh Caragana branches and leaves, washing and drying them, pulverizing them to a particle size of less than 0.5 mm, using an ethanol-water mixed solution as the extraction solvent, performing ultrasonic-assisted extraction at an extraction temperature of 40-60℃ for 1-3 hours, and then filtering, concentrating, and drying the Caragana extract.

[0006] Furthermore, the mass ratio of tea tree oil to rosemary extract in the synergistic antibacterial agent is 1:1 to 2:1, and the amount of allicin added is 5-15% of the total weight of the synergistic antibacterial agent.

[0007] Furthermore, the stabilizer is β-cyclodextrin or hydroxypropyl-β-cyclodextrin, and its addition amount accounts for 5-10% of the total weight of the compound antibacterial daily chemical additive.

[0008] Furthermore, the nonionic surfactant is selected from at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, or fatty acid glycerides.

[0009] The preparation method of the compound antibacterial daily chemical additive based on Caragana korshinskii extract includes the following steps: Step 1: Weigh out each raw material according to the proportions; Step 2: Mix the lemon extract with some of the solvent and stir until completely dissolved; Step 3: Add the synergistic antibacterial agent to the solution from Step 2 and continue stirring to mix thoroughly; Step 4: Add the stabilizer and dispersant to the remaining solvent, stir until completely dissolved, then combine with the mixture from Step 3 and continue stirring until homogeneous; Step 5: Adjust the pH value to neutral or weakly alkaline, filter to remove insoluble matter, and obtain the compound antibacterial daily chemical additive.

[0010] Furthermore, in step five, the pH value is adjusted by adding sodium hydroxide or sodium bicarbonate solution.

[0011] A hand sanitizer based on a compound antibacterial daily chemical additive of Caragana korshinskii extract, wherein the amount of the compound antibacterial daily chemical additive is 2-10% of the total weight of the hand sanitizer.

[0012] The laundry detergent contains a compound antibacterial daily chemical additive based on Caragana korshinskii extract, wherein the amount of the compound antibacterial daily chemical additive added is 1-5% of the total weight of the laundry detergent.

[0013] A dishwashing detergent based on a compound antibacterial daily chemical additive derived from Caragana korshinskii extract, wherein the amount of the compound antibacterial daily chemical additive added is 3-8% of the total weight of the dishwashing detergent.

[0014] Compared with the prior art, the composite antibacterial daily chemical additive based on Caragana korshinskii extract and its preparation method provided by the present invention have the following beneficial effects: By introducing synergistic antibacterial agents, such as tea tree oil, rosemary extract, and allicin, in combination with Ligusticum striatum extract, a powerful synergistic antibacterial effect is achieved. This not only significantly extends the antibacterial duration, enabling hand sanitizers to provide long-lasting antibacterial protection for several hours and laundry detergents to remain effective after multiple washes, but also achieves broad-spectrum and highly effective antibacterial properties, capable of dealing with various microbial environments. Simultaneously, the added stabilizers, such as β-cyclodextrin, effectively protect the active ingredients, preventing their decomposition and inactivation due to external environmental influences, thus ensuring the additives' high stability. In the preparation of daily chemical products, the synergistic effect of dispersants and stabilizers ensures uniform dispersion of the additives, preventing stratification and sedimentation. Even during long-term storage, the additives remain uniform and stable, guaranteeing product quality and performance, and providing a solid guarantee for long-term storage and effective use.

[0015] This composite antibacterial daily chemical additive boasts strong compatibility and can be widely applied to various daily chemical products such as hand sanitizers, laundry detergents, and dishwashing liquids. It provides technical support for product innovation and upgrades, meeting market demand for diverse and highly effective antibacterial daily chemical products. Its applications are diverse: hand sanitizers are suitable for daily hand cleaning, laundry detergents provide deep cleaning and long-lasting antibacterial properties, and dishwashing liquids effectively kill bacteria on tableware surfaces, making it suitable for various scenarios such as homes and restaurants. Furthermore, this additive provides long-lasting antibacterial protection, reducing the frequency and amount of repeated use of daily chemical products, saving users costs and improving product cost-effectiveness. In the preparation of dishwashing liquids, a small amount added achieves powerful cleaning and long-lasting antibacterial properties, saving raw material costs. Compared to traditional antibacterial products, its cost-effectiveness advantage is significant. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a flowchart illustrating the preparation method of the compound antibacterial daily chemical additive based on Caragana korshinskii extract according to the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1: Preparation of a compound antibacterial daily chemical additive based on Caragana korshinskii extract Raw material preparation: 30 parts of Litsea cubeba extract, 10 parts of tea tree oil, 10 parts of rosemary extract, 2 parts of allicin (22 parts of synergistic antibacterial agent), 8 parts of β-cyclodextrin (stabilizer), 5 parts of fatty alcohol polyoxyethylene ether (dispersant), and water as a balance.

[0020] Preparation process: Mix the lemon extract with some water and stir until completely dissolved; Add tea tree oil, rosemary extract, and allicin, and continue stirring until well mixed; Add β-cyclodextrin and fatty alcohol polyoxyethylene ether to the remaining water, stir until completely dissolved, then combine with the above mixture and continue stirring until homogeneous; Add sodium hydroxide solution to adjust the pH to 7.5, filter to remove insoluble matter, and obtain a compound antibacterial daily chemical additive.

[0021] Example 2: Preparation of hand sanitizer containing compound antibacterial daily chemical additives Raw material preparation: 5 parts of the compound antibacterial daily chemical additive prepared in Example 1, 10 parts of sodium dodecyl sulfate, 5 parts of cocamidopropyl betaine, 3 parts of glycerin, 0.5 parts of fragrance, and water as the balance.

[0022] Preparation process: Add sodium dodecyl sulfate, cocamidopropyl betaine, and glycerin to water and stir until completely dissolved; Add the composite antibacterial daily chemical additive prepared in Example 1, and continue stirring to mix evenly; After adding fragrance and stirring well, adjust the pH value to neutral to obtain a hand sanitizer containing compound antibacterial daily chemical additives.

[0023] Example 3: Preparation of laundry detergent containing compound antibacterial daily chemical additives Raw material preparation: 3 parts of the compound antibacterial daily chemical additive prepared in Example 1, 15 parts of sodium fatty alcohol polyoxyethylene ether sulfate, 5 parts of coconut oil diethanolamide, 2 parts of sodium citrate, 0.3 parts of fragrance, and water as the balance.

[0024] Preparation process: Add sodium fatty alcohol polyoxyethylene ether sulfate, cocoyl diethanolamide and sodium citrate to water and stir until completely dissolved; Add the composite antibacterial daily chemical additive prepared in Example 1, and continue stirring to mix evenly; After adding fragrance and stirring well, adjust the pH value to a slightly alkaline state to obtain a laundry detergent containing compound antibacterial daily chemical additives.

[0025] Implementation 4: Preparation of a detergent containing compound antibacterial daily chemical additives (for washing pots and dishes) Raw material preparation: 7 parts of the compound antibacterial daily chemical additive prepared in Example 1, 15 parts of sodium dodecylbenzenesulfonate, 5 parts of sodium carbonate (soda ash), 3 parts of sodium citrate, 0.3 parts of fragrance, and water as the balance.

[0026] Preparation process: Sodium dodecylbenzenesulfonate, sodium carbonate, and sodium citrate are added to an appropriate amount of water and stirred until completely dissolved to form a basic washing solution.

[0027] Add the composite antibacterial daily chemical additive prepared in Example 1 to the basic washing solution, and continue to stir and mix evenly to ensure that the additive is fully dispersed.

[0028] After adding fragrance and stirring well, adjust the pH of the solution to neutral (approximately pH 7) to obtain a detergent containing compound antibacterial daily chemical additives.

[0029] Finally, the detergent is filtered to remove any insoluble substances or impurities, resulting in a clear and transparent detergent product.

[0030] Comparison Example Existing technical solution content: 1. Preparation of single Caragana korshinskii extract Raw material selection: Fresh lemon branches and leaves are selected as raw materials.

[0031] Preparation method: Wash and dry the branches and leaves of the Caragana korshinskii, crush them to a certain particle size, use ethanol as the extraction solvent, and perform conventional soaking extraction. The extraction temperature is room temperature to 40℃, and the extraction time is several hours to overnight. After extraction, filter, concentrate and dry to obtain a single Caragana korshinskii extract.

[0032] 2. Preparation of antibacterial hand sanitizer made from a single Caragana korshinskii extract Raw material preparation: Single Caragana extract: 5-10 parts (adjust according to the desired antibacterial effect) Surfactant: Sodium lauryl sulfate 10-15 parts, as the main cleaning ingredient. Thickener: 1-2 parts sodium chloride, used to adjust the viscosity of the hand sanitizer. Fragrance: 0.1-0.5 parts, providing a pleasant aroma. Water: Balance Preparation process: Sodium dodecyl sulfate and sodium chloride are added to water and stirred until completely dissolved to form a basic solution.

[0033] The single Litsea cubeba extract was gradually added to the base solution while stirring to ensure that the extract was evenly dispersed.

[0034] Add flavoring and continue stirring until well mixed.

[0035] Adjust the pH to neutral or slightly alkaline (e.g., using sodium hydroxide solution) to suit skin use.

[0036] The solution is filtered to remove any insoluble substances or impurities, resulting in a single Caragana korshinskii extract antibacterial hand sanitizer.

[0037] 3. Limitations of existing technical solutions: Short-lasting antibacterial effect: As an antibacterial agent, the antibacterial effect of a single Caragana korshinskii extract weakens rapidly over time, making it difficult to meet the needs of long-term antibacterial activity.

[0038] Limited antibacterial effect: The lack of research on synergistic effects with other antibacterial components leads to a relatively singular antibacterial effect, making it difficult to cope with complex and ever-changing microbial environments.

[0039] Limited application scope: Due to the limitations of antibacterial time and effect, this solution is mainly applicable to daily chemical products with low antibacterial requirements, such as ordinary hand sanitizers. It is difficult to extend to other occasions that require high efficiency and long-lasting antibacterial properties, such as laundry detergents and dishwashing liquids.

[0040] The effects of the compound antibacterial daily chemical additives based on *Caragana korshinskii* extract from Examples 1 to 3 were compared with those of the control example, and the results are shown in the table below: Comparison items Example 1 (Compound Antibacterial Daily Chemical Additive) Example 2 (Hand sanitizer containing compound additives) Example 3 (Laundry detergent containing compound additives) Example 4 (Detergent containing compound additives) Control example (hand sanitizer with only Lemongrass extract) Antibacterial duration Significantly prolongs (synergistic antibacterial effect) Long-lasting antibacterial effect (lasts several hours or more) Long-lasting antibacterial properties (remains effective even after multiple washes) Long-lasting antibacterial properties (remains effective even after multiple applications). Its antibacterial effect is short-lived (weakening within 1-2 hours). Antibacterial effect Broad-spectrum and highly effective (multiple microorganisms) Powerful stain removal + antibacterial (dual action) Powerful stain removal + antibacterial (deep cleaning) Powerful stain removal + antibacterial (dishware cleaning) Single antibacterial agent (limited effectiveness) stability High (stabilizer protection) Uniform and stable (no stratification or sedimentation) Uniform and stable (does not separate during long-term storage) Uniform and stable (does not separate during long-term storage) Stability is average (susceptible to environmental influences). Scope of application Widely compatible (fits a variety of daily chemical products) Hand sanitizer (for specific scenarios) Laundry detergent (for specific scenarios) Detergent (for washing pots and dishes) Only suitable for low-requirement antimicrobial scenarios Skin irritation Low (natural ingredients + gentle formula) Gentle and non-irritating (suitable for daily use) Gentle and non-irritating (suitable for cleaning clothes) Gentle and non-irritating (suitable for cleaning tableware) Slightly more irritating (due to high concentration of single extract). Cost-effectiveness High (long-lasting, reduces the need for repeated use) High (excellent cost performance) High (saves usage) High (saves on dosage and lasts longer) Low (requires frequent use to maintain effectiveness) As shown in the table above, Examples 1 to 4 significantly improved the performance of antibacterial daily chemical additives by introducing synergistic antibacterial agents, stabilizers, and dispersants. The composite antibacterial daily chemical additive in Example 1 not only has a long-lasting antibacterial effect, broad-spectrum efficacy, and high efficiency, but also high stability, making it compatible with various daily chemical products. Examples 2 and 3 applied the composite additive to hand sanitizer and laundry detergent, respectively, achieving a dual effect of strong detergency and long-lasting antibacterial properties, while maintaining product uniformity, stability, and mildness, significantly reducing skin irritation and improving cost-effectiveness. Meanwhile, Example 4 demonstrated excellent performance in terms of antibacterial duration, antibacterial effect, stability, applicability, skin irritation, and cost-effectiveness, showcasing, together with Examples 1-3, the wide application potential and advantages of composite antibacterial daily chemical additives based on *Caragana korshinskii* extract in different daily chemical products. In contrast, the control examples used only *Caragana korshinskii* extract as an antibacterial agent, resulting in problems such as short antibacterial duration, limited efficacy, general stability, and high irritation, making it difficult to meet the demand for efficient and long-lasting antibacterial action.

[0041] Application example: Preparation and application of tableware cleaners containing compound antibacterial daily chemical additives

[0042] Raw material preparation: 6 parts of the compound antibacterial daily chemical additive prepared in Example 1, 12 parts of sodium dodecylbenzenesulfonate, 1 part of disodium ethylenediaminetetraacetate, 0.2 parts of fragrance, and water as the balance.

[0043] Preparation process: Sodium dodecylbenzenesulfonate and disodium ethylenediaminetetraacetate were added to water and stirred until completely dissolved. Add the composite antibacterial daily chemical additive prepared in Example 1, and continue stirring to mix evenly; After adding fragrance and stirring well, adjust the pH value to neutral to obtain a dishwashing cleaner containing compound antibacterial daily chemical additives.

[0044] Application results: When the prepared tableware cleaner was used to clean tableware contaminated with oil and bacteria, it was found that it had strong cleaning power, could effectively kill bacteria on the surface of the tableware, and had a long-lasting antibacterial effect, thus meeting the needs of tableware cleaning.

[0045] Technical Summary: I. Significantly improved antibacterial properties The antibacterial effect is significantly prolonged: In the compound antibacterial daily chemical additive of Example 1, synergistic antibacterial agents such as tea tree oil, rosemary extract, and allicin work together with Ligusticum striatum extract to produce a synergistic antibacterial effect. This synergistic effect means that the antibacterial effect does not weaken rapidly over time like that of Ligusticum striatum extract alone, but can be maintained for a long time. For example, the hand sanitizer of Example 2 can achieve long-lasting antibacterial effect for more than several hours, and the laundry detergent of Example 3 can still effectively fight bacteria after multiple washes, while the antibacterial effect of the hand sanitizer with only Ligusticum striatum extract in the control example is only 1-2 hours.

[0046] Broad-spectrum and highly effective antibacterial effect: The antibacterial effect of a single Caragana korshinskii extract is relatively limited and difficult to cope with the complex and ever-changing microbial environment. This patented compound antibacterial daily chemical additive, through the synergistic effect of multiple antibacterial components, can exert a powerful inhibitory and bactericidal effect on a variety of microorganisms, achieving broad-spectrum antibacterial activity. The hand sanitizer of Example 2 and the laundry detergent of Example 3, while possessing strong cleaning power, also achieve highly effective antibacterial properties, meeting the stringent antibacterial requirements in different scenarios. In contrast, the control example only achieves single-component antibacterial activity, with limited effectiveness.

[0047] II. Significantly Enhanced Product Stability High stability of the additive: The β-cyclodextrin added in Example 1 acts as a stabilizer, effectively protecting the active ingredients in the composite antibacterial daily chemical additive and preventing them from decomposing or becoming ineffective due to external environmental factors (such as temperature, humidity, and light). This gives the additive high stability, making it compatible with a variety of daily chemical products and ensuring long-term storage and effective use of the products.

[0048] The daily chemical products exhibit uniform and stable properties: In the preparation processes of the hand sanitizer in Example 2 and the laundry detergent in Example 3, the use of dispersants such as fatty alcohol polyoxyethylene ethers, combined with the action of stabilizers, ensured that the composite antibacterial daily chemical additives were uniformly dispersed in the products, preventing stratification or sedimentation. Even after long-term storage, the products maintained a uniform and stable state, guaranteeing product quality and performance. In contrast, the hand sanitizer made from a single Caragana korshinskii extract in the control example exhibited generally poor stability and was easily affected by the environment.

[0049] III. Wide range of applications The additive exhibits strong compatibility: Due to its excellent stability, antibacterial properties, and mild formulation, the compound antibacterial daily chemical additive in Example 1 can be widely used in various daily chemical products, such as hand sanitizers, laundry detergents, and dishwashing liquids. This provides strong technical support for the innovation and upgrading of daily chemical products, meeting the market's demand for diversified and highly effective antibacterial daily chemical products.

[0050] Daily chemical products have a wide range of applications: Based on the advantages of compound antibacterial additives, the hand sanitizer in Example 2 is suitable for daily hand cleaning, effectively removing dirt and bacteria and protecting hand health; the laundry detergent in Example 3 can be used for laundry, not only deeply cleaning clothes but also providing long-lasting antibacterial protection for wearers; in the newly added application examples, the tableware cleaner containing compound antibacterial additives can effectively kill bacteria on the surface of tableware, meeting high requirements for tableware cleaning and suitable for various scenarios such as homes and restaurants. In contrast, the control example is only suitable for low-requirement antibacterial scenarios such as ordinary hand sanitizers where antibacterial requirements are not high.

[0051] IV. Significantly reduced skin irritation The additives are natural and gentle: In the compound antibacterial daily chemical additive of Example 1, the extracts of Lemongrass, Tea Tree Oil, and Rosemary are all natural ingredients, and the formula is carefully designed to avoid the use of chemicals that may irritate the skin. At the same time, the use of ingredients such as β-cyclodextrin further reduces the potential irritation of the active ingredients to the skin, making this additive low in irritation.

[0052] Gentle and non-irritating daily chemical products: The compound antibacterial additives were applied to daily chemical products such as hand sanitizers and laundry detergents. The hand sanitizer in Example 2 and the laundry detergent in Example 3 both exhibited gentle and non-irritating properties, suitable for daily use. Neither the hand sanitizer, which comes into direct contact with the skin, nor the laundry detergent, which may come into indirect contact with the skin when cleaning clothes, caused any adverse effects on the skin, improving the user experience and safety. In contrast, the control example, due to its higher concentration of a single *Caragana korshinskii* extract, showed slightly higher irritation.

[0053] V. Cost-effectiveness significantly improved Long-lasting and reduced reusability: The compound antibacterial daily chemical additive in Example 1 has a long-lasting antibacterial effect, allowing daily chemical products containing this additive to maintain a good antibacterial state without frequent use. For example, after washing hands with the hand sanitizer in Example 2, the antibacterial effect on the hands can be maintained for a longer period of time, reducing the number of times hands are washed and the amount of hand sanitizer used; the laundry detergent in Example 3 can still effectively fight bacteria after multiple washes, reducing the frequency of laundry detergent use. This not only saves users usage costs but also improves the cost-effectiveness of the products.

[0054] Reduced usage in daily chemical products: Due to the highly efficient antibacterial properties of the compound antibacterial daily chemical additive, adding a small amount of this additive to daily chemical products can achieve the desired antibacterial effect. For example, in the preparation of dishwashing detergent, adding only 6 parts of the compound antibacterial daily chemical additive prepared in Example 1 can achieve strong cleaning and long-lasting antibacterial properties. Compared with traditional products that require large amounts of antibacterial agents, this significantly reduces raw material costs while ensuring product quality and performance. In contrast, the control example has a short antibacterial duration and limited effect, requiring frequent use to maintain the effect, resulting in lower cost-effectiveness.

[0055] In summary, this patent innovatively prepares a composite antibacterial daily chemical additive based on Caragana korshinskii extract by introducing synergistic antibacterial agents, stabilizers, and dispersants. Its application in various daily chemical products has yielded significant advantages in antibacterial performance, stability, applicability, skin irritation, and cost-effectiveness. This provides new ideas and technical support for the development of the daily chemical industry, and has broad market application prospects and significant social implications.

[0056] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A compound antibacterial daily chemical additive based on *Caragana korshinskii* extract, characterized in that, The product comprises the following raw materials in parts by weight: 20-50 parts of Lemongrass extract, 10-30 parts of synergistic antibacterial agent, 5-15 parts of stabilizer, 3-10 parts of dispersant, and the balance of solvent; wherein the synergistic antibacterial agent is selected from at least two of tea tree oil, rosemary extract, and allicin; wherein the stabilizer is cyclodextrin; wherein the dispersant is a nonionic surfactant; and wherein the solvent is water or an alcohol solvent.

2. The composite antibacterial daily chemical additive based on *Caragana korshinskii* extract according to claim 1, characterized in that, The Caragana extract is prepared by the following steps: Select fresh Caragana branches and leaves, wash and dry them, pulverize them to a particle size of less than 0.5 mm, use an ethanol-water mixture as the extraction solvent, perform ultrasonic-assisted extraction, the extraction temperature is 40-60℃, the extraction time is 1-3 hours, and after extraction, filter, concentrate and dry to obtain the Caragana extract.

3. The composite antibacterial daily chemical additive based on *Caragana korshinskii* extract according to claim 1, characterized in that, The mass ratio of tea tree oil to rosemary extract in the synergistic antibacterial agent is 1:1 to 2:1, and the amount of allicin added is 5-15% of the total weight of the synergistic antibacterial agent.

4. The composite antibacterial daily chemical additive based on *Caragana korshinskii* extract according to claim 1, characterized in that, The stabilizer is β-cyclodextrin or hydroxypropyl-β-cyclodextrin, and its addition amount accounts for 5-10% of the total weight of the compound antibacterial daily chemical additive.

5. The composite antibacterial daily chemical additive based on *Caragana korshinskii* extract according to claim 1, characterized in that, The nonionic surfactant is selected from at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, or fatty acid glycerides.

6. The method for preparing the composite antibacterial daily chemical additive based on *Caragana korshinskii* extract according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Weigh out each raw material according to the proportions; Step 2: Mix the lemon extract with some of the solvent and stir until completely dissolved; Step 3: Add the synergistic antibacterial agent to the solution from Step 2 and continue stirring to mix thoroughly; Step 4: Add the stabilizer and dispersant to the remaining solvent, stir until completely dissolved, then combine with the mixture from Step 3 and continue stirring until homogeneous; Step 5: Adjust the pH value to neutral or weakly alkaline, filter to remove insoluble matter, and obtain the compound antibacterial daily chemical additive.

7. The preparation method of the composite antibacterial daily chemical additive based on Caragana korshinskii extract according to claim 1, characterized in that, In step five, the pH value is adjusted by adding sodium hydroxide or sodium bicarbonate solution.

8. A hand sanitizer containing a compound antibacterial daily chemical additive based on *Caragana korshinskii* extract as described in any one of claims 1-5, characterized in that, The amount of the compound antibacterial daily chemical additive added is 2-10% of the total weight of the hand sanitizer.

9. A laundry detergent containing a compound antibacterial daily chemical additive based on *Caragana korshinskii* extract as described in any one of claims 1-5, characterized in that, The amount of the compound antibacterial daily chemical additive added is 1-5% of the total weight of the laundry detergent.

10. A dishwashing detergent containing a compound antibacterial daily chemical additive based on *Caragana korshinskii* extract as described in any one of claims 1-5, characterized in that, The amount of the compound antibacterial daily chemical additive added is 3-8% of the total weight of the tableware cleaner.

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