Plant-based antibacterial and antiskid agent and preparation method thereof

Abstract

The application belongs to the field of antiskid agents, and provides a plant-based antibacterial antiskid agent and a preparation method thereof.The antiskid agent comprises the following components by weight: plant-based antibacterial microcapsules 10-40 parts, natural adhesive resin 20-60 parts, environmentally-friendly solvent 30-50 parts, and auxiliary agent 0.5-5 parts.The microcapsules are formed by wall material wrapping core material, and the core material comprises plant source antibacterial active substances loaded on nano-silica aerogel.The active substances can comprise lipophilic plant essential oil or hydrophilic plant extract.The application also provides a microencapsulation method for different active substances.The application protects the active ingredients through the microcapsule structure, realizes long-acting antibacterial effect through the adsorption-slow release effect of the aerogel, realizes persistent antiskid through the synergistic effect of the physical friction increasing of the microcapsule particles and the chemical adhesion of the natural resin.

Description

Technical Field

[0001] This invention belongs to the field of antislip agents, specifically a plant-based antibacterial antislip agent and its preparation method. Background Technology

[0002] With increasing public awareness of safety and environmental protection, anti-slip and antibacterial treatments for floors have become essential requirements for public spaces such as hospitals, schools, restaurants, and elderly care facilities. Traditional anti-slip treatments mainly employ physical etching, epoxy resin coating, or rubber mat installation, but these methods suffer from complex construction, susceptibility to aging, and difficulty in cleaning. In recent years, chemical anti-slip agents have gained widespread use due to their ease of application and lack of impact on the substrate's appearance; however, existing products often have the following shortcomings:

[0003] 1. Most anti-slip agents only focus on anti-slip performance and lack antibacterial function, or the antibacterial ingredients are incompatible with the anti-slip system, resulting in mutual weakening of the effect;

[0004] 2. Plant-derived antibacterial ingredients (such as plant essential oils and polyphenols) are volatile and easily oxidized, and lose their activity in a short period of time after surface treatment, thus failing to meet the requirements for long-lasting antibacterial effects.

[0005] 3. In existing formulations, the active ingredients and film-forming materials are simply mixed, which can easily lead to phase separation, precipitation, or deactivation during storage.

[0006] CN107518748A discloses an antibacterial and antislip mat and its preparation method. The mat mixes plant antibacterial components such as capsaicin and allicin with epoxy resin and coats the mat surface. On the one hand, it increases the surface friction, and on the other hand, it can effectively remove residual dust and other impurities from the surface. At the same time, the fragrance effectively removes the original odor of the colloid. More importantly, the capsaicin and allicin contained in the fragrance effectively repel mosquitoes and prevent the growth of bacteria.

[0007] However, this approach involves direct exposure of plant-based active ingredients, resulting in limited antibacterial durability, and it is only applicable to mat products, thus limiting its application scope.

[0008] To address the problems raised in the background art, those skilled in the art have proposed a plant-based antibacterial and antislip agent and its preparation method. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention provides a plant-based antibacterial and antislip agent and its preparation method, thereby solving the problem of limited antibacterial durability caused by direct exposure of plant active ingredients in the prior art.

[0010] A plant-based antibacterial and antislip agent comprises the following components in parts by weight: 10-40 parts of plant-based antibacterial microcapsules; 20-60 parts of natural adhesive resin; 30-50 parts of environmentally friendly solvent; and 0.5-5 parts of additives. The plant-based antibacterial microcapsules are formed by a wall material encapsulating a core material, and the core material contains plant-derived antibacterial active substances.

[0011] Preferably, the wall material of the plant-based antibacterial microcapsules is selected from natural polymer materials or synthetic biodegradable polymer materials; the natural polymer material is selected from at least one of gelatin, gum arabic, chitosan, and sodium alginate; the synthetic biodegradable polymer material is selected from at least one of polylactic acid and polycaprolactone.

[0012] Preferably, the core material further comprises a nanoporous adsorbent material, on which the plant-derived antibacterial active substance is loaded; the nanoporous adsorbent material is nano-silica aerogel with a specific surface area greater than 500 m² / g and a particle size of 10-100 nanometers.

[0013] Preferably, the plant-derived antibacterial active substance includes a lipophilic antibacterial active substance or a hydrophilic antibacterial active substance; the lipophilic antibacterial active substance is selected from at least one plant essential oil selected from cinnamaldehyde, citronellol, and thymol; the hydrophilic antibacterial active substance is selected from at least one plant extract selected from plant tannins, chitosan quaternary ammonium salts, tea polyphenols, and rosmarinic acid.

[0014] Preferably, the hydrophilic antibacterial active ingredient comprises a combination of plant tannic acid, chitosan quaternary ammonium salt and tea polyphenol-rosmarinic acid complex, wherein the mass ratio of tea polyphenol to rosmarinic acid in the tea polyphenol-rosmarinic acid complex is 2:1 to 4:1.

[0015] Preferably, the natural adhesive resin is at least one selected from rosin resin, terpene resin, dammar resin, and modified starch-grafted acrylic acid copolymer; the modified starch-grafted acrylic acid copolymer is corn starch-g-sodium acrylate, with a grafting rate of 15% to 25% and a weight-average molecular weight of 8 × 10⁻⁶. 4 ~2×10 5 .

[0016] Preferably, the additives include a natural polyol humectant, a wetting agent, an antifoaming agent, and a pH adjuster; the natural polyol humectant is selected from at least one of glycerin, sorbitol, and erythritol; the wetting agent is an alkyl glycoside; the antifoaming agent is polyether-modified silicone oil; and the pH adjuster is citric acid or sodium bicarbonate, used to adjust the pH of the system to 6.5–7.5.

[0017] A method for preparing the above-mentioned plant-based antibacterial and antislip agent provides a corresponding microencapsulation process for plant-derived antibacterial active substances with different properties.

[0018] When the plant-derived antibacterial active substance contains lipophilic plant essential oils, the preparation method includes the following steps:

[0019] S1. Preparation of composite core material: Stir and adsorb plant essential oil and nano silica aerogel at 30-50℃ for 2-4 hours to load plant essential oil in the pores of aerogel and obtain composite core material.

[0020] S2. Preparation of microcapsules: The composite core material obtained in step S1 is coated by composite coagulation method or emulsion solvent evaporation method to form a plant-based antibacterial microcapsule suspension.

[0021] Among them, when using the composite coagulation method, gelatin and gum arabic are used as wall materials, and composite coagulation occurs under the conditions of pH 3.5-4.5 and temperature 40-50℃, and then a crosslinking agent is added for curing; when using the emulsion solvent evaporation method, polylactic acid is used as wall material, and the composite core material is dispersed in the organic solvent of polylactic acid, and the solvent is evaporated after emulsification.

[0022] S3, Compounding: Dissolve the natural adhesive resin in a portion of the environmentally friendly solvent, add the microcapsule suspension obtained in step S2, the remaining environmentally friendly solvent and additives while stirring, and disperse evenly to obtain the final product.

[0023] When the plant-derived antibacterial active substance contains hydrophilic plant extracts, the preparation method includes the following steps:

[0024] S1. Preparation of core material solution: Dissolve hydrophilic plant extracts in water to prepare a core material aqueous solution;

[0025] S2. Preparation of microcapsules: The aqueous solution of the core material is coated by reverse emulsification or spray drying to form plant-based antibacterial microcapsule powder or suspension;

[0026] Among them, when using the reverse emulsification method, polylactic acid is used as the wall material, the organic solution of polylactic acid is used as the oil phase, and the aqueous solution of the core material is used as the aqueous phase. The emulsion is formed by emulsification and the solvent is evaporated and cured. When using the spray drying method, sodium alginate or chitosan is used as the wall material. The aqueous solution of the core material is mixed with the wall material solution and then spray dried.

[0027] S3. Compounding: Dissolve the natural adhesive resin in a portion of the environmentally friendly solvent, add the microcapsules obtained in step S2, the remaining environmentally friendly solvent and additives while stirring, and disperse evenly to obtain the final product.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This invention utilizes a microcapsule structure to encapsulate and protect plant-derived antibacterial active substances, significantly improving the stability of the active ingredients. The porous structure of the nano-silica aerogel adsorbs and slows down the release of the active ingredients, further prolonging the antibacterial effect. Experiments show that the antibacterial activity retention rate of the product of this invention is >85% after 6 months of storage at room temperature, while the activity retention rate of the directly mixed control group is <30%.

[0030] 2. This invention achieves anti-slip properties through a dual mechanism of "physical + chemical". Physically, microcapsule particles (5-50 micrometers) form a microscopic rough structure on the surface, increasing the coefficient of friction. Chemically, natural adhesive resin provides moderate adhesion, and plant tannins can undergo in-situ complexation reactions with calcium-containing substrates (such as marble and artificial stone) to form nanoscale microcrystalline protrusions, further enhancing the anti-slip effect. The wet friction coefficient of the treated surface can reach 0.6-0.8, which is better than the national standard requirements.

[0031] 3. This invention combines lipophilic plant essential oils with hydrophilic plant extracts, broadening the antibacterial spectrum and exhibiting synergistic killing effects against various bacteria and fungi. Experiments have shown that the diameter of the inhibition zone of the compound system is 20%-35% larger than that of the sum of the individual components, indicating a significant synergistic effect.

[0032] 4. This invention isolates the active ingredients from the external environment through a microcapsule structure, avoiding direct contact with other components and significantly improving the storage stability of the system. The product is an aqueous system, easy to apply, and can be applied by spraying, brushing, or rolling. It forms a film after drying at room temperature for 10-30 minutes. Detailed Implementation

[0033] The embodiments of the present invention will be described in further detail below with reference to examples. These examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0034] Example 1: Preparation of antislip agent with microcapsules containing lipophilic active ingredients.

[0035] In this embodiment, cinnamaldehyde is used as a lipophilic antibacterial active ingredient, and microcapsules are prepared by a composite coagulation method.

[0036] S1. Weigh 15g of nano-silica aerogel and place it in a 500mL three-necked flask. Add 100g of anhydrous ethanol and sonicate for 30 minutes. Weigh 30g of cinnamaldehyde and slowly add it dropwise to the aerogel dispersion. Stir and adsorb at 40℃ for 3 hours. Remove the ethanol by rotary evaporation to obtain cinnamaldehyde-aerogel composite core material with a cinnamaldehyde loading of approximately 65% ​​(mass fraction).

[0037] S2. Weigh 10g of gelatin and 10g of gum arabic, dissolve them separately in 200mL of deionized water, and dissolve completely in a 50℃ water bath. Mix the gelatin solution and gum arabic solution, add 25g of the composite core material prepared in step S1, stir evenly, adjust the pH of the system to 4.0 with 10% acetic acid solution, continue stirring for 30 minutes to induce a composite coagulation reaction, cool the system to below 10℃, add 5mL of 25% glutaraldehyde aqueous solution, crosslink and cure for 2 hours, adjust the pH to 9.0 with 10% sodium hydroxide solution to terminate the crosslinking, filter, wash 3 times with deionized water, and vacuum dry at 40℃ for 12 hours to obtain microcapsule powder.

[0038] S3. Weigh 30g of rosin resin, add 40g of anhydrous ethanol, stir until completely dissolved, weigh 20g of the microcapsule powder prepared in step S2, add it to the above resin solution, stir and disperse evenly, add 2g of alkyl glycoside, 0.5g of polyether modified silicone oil, and 5g of glycerol, add deionized water to a total weight of 100g, adjust the pH to 7.0 with citric acid, and continue stirring for 30 minutes to obtain a plant-based antibacterial and antislip agent.

[0039] Example 2: Preparation of hydrophilic active ingredient microcapsule antislip agent.

[0040] In this embodiment, plant tannic acid and chitosan quaternary ammonium salt are used as hydrophilic antibacterial active ingredients, and microcapsules are prepared by reverse emulsification.

[0041] S1. Weigh 8g of plant tannic acid and 4g of chitosan quaternary ammonium salt, dissolve them in 60mL of deionized water, stir at 40℃ until completely dissolved, and obtain the core material aqueous solution.

[0042] S2. Weigh 15g of polylactic acid and dissolve it in 150mL of dichloromethane as the oil phase. Under stirring in a high-speed shear emulsifier (10000rpm), slowly add the aqueous core material solution from step S1 dropwise to the oil phase, emulsifying for 10 minutes to form a W / O emulsion. Transfer the emulsion to a rotary evaporator and remove the dichloromethane under reduced pressure at 40℃ to precipitate microcapsules. Filter the precipitate, wash three times with petroleum ether, and dry under vacuum at 40℃ for 6 hours to obtain microcapsule powder.

[0043] S3. Weigh 35g of the modified starch-grafted acrylic acid copolymer, add 50mL of deionized water, and stir at 60℃ until completely dissolved. Weigh 20g of the microcapsule powder prepared in step S2, add it to the above polymer solution, and stir to disperse evenly. Add 3g of sorbitol, 1g of alkyl glycoside, and 0.3g of polyether-modified silicone oil, and add deionized water to a total weight of 100g. Adjust the pH to 7.0 with citric acid, and continue stirring for 30 minutes to obtain the plant-based antibacterial and antislip agent.

[0044] Example 3: Preparation of composite active ingredient microcapsule antislip agent.

[0045] In this embodiment, a lipophilic active ingredient and a hydrophilic active ingredient are combined and a stepwise microencapsulation process is adopted.

[0046] S1. Weigh 10g of nano-silica aerogel, add 80g of anhydrous ethanol, and disperse by ultrasonication. Weigh 15g of cinnamaldehyde and 5g of thymol, mix them evenly, and add them dropwise to the aerogel dispersion. Stir and adsorb at 40℃ for 3 hours. Remove the ethanol by rotary evaporation to obtain essential oil-aerogel composite core material A.

[0047] S2. Weigh 5g of plant tannic acid, 3g of chitosan quaternary ammonium salt and 4g of tea polyphenol-rosmarinic acid complex (tea polyphenol:rosmarinic acid = 3:1, mass ratio), dissolve in 50mL of deionized water, stir at 40℃ until completely dissolved, to obtain core material aqueous solution B.

[0048] S3. A reverse emulsification-spray drying combined process is adopted. First, the aqueous solution B of the core material is mixed with 10g of sodium alginate and stirred evenly to form the aqueous phase. The core material A is dispersed in 100mL of liquid paraffin, and 5g of Span 80 is added to form the oil phase. Under stirring in a high-speed shear emulsifier (12000rpm), the aqueous phase is slowly added dropwise to the oil phase to emulsify and form a W / O emulsion. The emulsion is then spray-dried (inlet temperature 160℃, outlet temperature 80℃).

[0049] S4. Weigh 25g of terpene resin, add 35g of D-limonene, and stir until completely dissolved. Weigh 25g of the microcapsule powder prepared in step S3, add it to the above resin solution, and stir to disperse evenly. Add 4g of erythritol, 1.5g of alkyl glycoside, and 0.5g of polyether-modified silicone oil, and add deionized water to a total weight of 100g. Adjust the pH to 6.8 with citric acid, and continue stirring for 30 minutes to obtain a plant-based antibacterial and antislip agent.

[0050] Example 4: Optimized anti-slip agent for calcium-containing substrates

[0051] This embodiment increases the content of plant tannins based on Example 3 and uses a dual microcapsule system.

[0052] S1, same as steps S1 and S3 in Example 3, but with an increased proportion of plant tannins in the hydrophilic core material. Core material aqueous solution formulation: 8g plant tannins, 2g chitosan quaternary ammonium salt, 3g tea polyphenol-rosmarinic acid complex (tea polyphenol:rosmarinic acid = 3:1), the rest are the same as in Example 3.

[0053] S2. Dissolve 5g of plant tannic acid in 30mL of deionized water and prepare microcapsules separately by spray drying. The wall material is chitosan (chitosan:tannic acid = 1:2, mass ratio).

[0054] S3. Weigh 20g of modified starch-grafted acrylic acid copolymer and 10g of rosin resin, add 40mL of anhydrous ethanol and 20mL of deionized water, and stir at 60℃ until completely dissolved. Weigh 20g of microcapsule A and 5g of microcapsule B, add them to the above solution, and stir to disperse evenly. Add 3g of glycerol, 1g of alkyl glycoside, and 0.3g of polyether-modified silicone oil, adjust the pH to 7.0 with citric acid, add deionized water to a total weight of 100g, and continue stirring for 30 minutes to obtain a plant-based antibacterial and antislip agent.

[0055] Comparative Example 1: Physical mixture (without microcapsules).

[0056] The total amount and ratio of active ingredients were as in Example 3, but without microencapsulation. 15g of cinnamaldehyde, 5g of thymol, 5g of plant tannins, 3g of chitosan quaternary ammonium salt, and 4g of tea polyphenol-rosmarinic acid complex (tea polyphenol:rosmarinic acid = 3:1) were weighed and mixed thoroughly to obtain the active ingredient mixture. 25g of terpene resin was dissolved in 35g of D-limonene, and the above active ingredient mixture, 4g of erythritol, 1.5g of alkyl glycoside, and 0.5g of polyether-modified silicone oil were added. Deionized water was added to bring the total weight to 100g, and the mixture was stirred thoroughly to obtain the antislip agent.

[0057] Comparative Example 2: Microcapsules without aerogel

[0058] The active ingredient formulation of Example 3 was followed, but without the use of nano-silica aerogel. 15g of cinnamaldehyde and 5g of thymol were mixed as a lipophilic core material and directly microencapsulated using a composite coagulation method (same as step S2 in Example 1). The hydrophilic portion was microencapsulated separately using a reverse emulsification method, as in step S2 of Example 3. The two microcapsules were then mixed and compounded according to step S4 of Example 3.

[0059] Performance test results

[0060] The antislip agents prepared in Examples 1-4 and Comparative Examples 1-2 were subjected to performance tests, and the results are shown in Table 1.

[0061] Table 1

[0062] Test Project Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Initial wet friction coefficient 0.65 0.68 0.72 0.78 0.58 0.63 The coefficient of wet friction after 50 wipes 0.59 0.61 0.66 0.73 0.32 0.48 Anti-slip performance retention rate 90.80% 89.70% 91.70% 93.60% 55.20% 76.20% Escherichia coli inhibition rate (initial) 24h 99.30% 99.10% 99.70% 99.80% 98.50% 99.20% Staphylococcus aureus inhibition rate (initial) after 24 hours 99.10% 98.90% 99.50% 99.60% 97.80% 98.90% Inhibition rate of Escherichia coli over 24 hours (after 6 months of storage at room temperature) 86.50% 84.20% 91.30% 92.50% 25.60% 63.80% Staphylococcus aureus inhibition rate after 24 hours (6 months of storage at room temperature) 85.10% 82.70% 90.10% 91.20% 21.30% 60.20% Storage stability (6 months, appearance) No layering No layering No layering No layering Clearly layered Slight stratification

[0063] Note: The wet friction coefficient was tested according to GB / T 4100-2015 standard; the antibacterial performance was tested according to GB / T 20944.3-2008 standard.

[0064] Results analysis:

[0065] 1. Comparative Example 1 (physical mixture) showed acceptable initial anti-slip and antibacterial properties, but extremely poor durability. After 50 wiping cycles, its anti-slip properties decreased by nearly half, and after 6 months of storage, its antibacterial activity was almost completely lost. This indicates that unprotected active ingredients are easily lost, and the microcapsule structure is key to achieving long-lasting effects.

[0066] 2. Comparative Example 2 (microcapsules without aerogel) performed better than Comparative Example 1, but significantly worse than Example 3. Especially in terms of antibacterial durability, the antibacterial rate of Example 3 at 6 months was approximately 30 percentage points higher than that of Comparative Example 2, demonstrating that the adsorption-sustaining release effect of the aerogel significantly enhanced the long-lasting effect. Regarding anti-slip properties, the nanoparticles of the aerogel itself also contributed a certain degree of physical friction-enhancing effect.

[0067] 3. Examples 3 and 4 contain both lipophilic and hydrophilic active ingredients, resulting in a broader antibacterial spectrum. Both exhibited inhibition rates exceeding 99.5% against the two test bacteria, superior to the single-type examples 1 and 2. This compound system maintained an inhibition rate of over 90% after storage, demonstrating excellent synergistic stability.

[0068] 4. Example 4 optimized the calcium-containing substrate by increasing the tannic acid content and employing a dual microencapsulation system, enabling the plant tannic acid to fully complex with calcium ions in the substrate, forming nanoscale microcrystalline protrusions. This not only improved the initial anti-slip coefficient (0.78) but also ensured that the anti-slip performance retention rate reached 93.6% after 50 wiping cycles, demonstrating the contribution of chemical bonding to durability.

[0069] Example 5: Verification of different ratio ranges

[0070] To verify the rationality of the component range in the claims, a series of samples were prepared according to the proportions shown in Table 2, and the process of Example 3 was used to test their performance.

[0071] Table 2

[0072] sample Microcapsules (per serving) Resin (parts) Solvent (parts) Additives (parts) wet friction coefficient 24-hour antibacterial rate (E. coli) Stability (6 months) 1 10 60 30 1 0.62 99.20% Stablize 2 20 40 40 2 0.7 99.50% Stablize 3 30 30 40 3 0.74 99.60% Stablize 4 40 20 40 4 0.76 99.70% Stablize 5 5 70 25 1 0.51 98.20% Stablize 6 50 10 40 4 0.68 98.90% Layering

[0073] The results showed that when the amount of microcapsules was less than 10 parts (5), the anti-slip performance was insufficient (<0.6); when the amount of microcapsules was more than 40 parts (6), the system stability decreased and stratification occurred; when the amount of resin was less than 20 parts (6), the adhesion was insufficient and the anti-slip performance decreased. The 10-40 parts of microcapsules and 20-60 parts of resin in this formulation can ensure the optimal overall performance.

[0074] Application Example 1:

[0075] The hospital inpatient corridor had a tiled floor with a wet friction coefficient of 0.35, posing a slip risk. An anti-slip agent prepared in Example 3 was applied at a dosage of 50 g / m² and sprayed on, then allowed to dry at room temperature for 20 minutes. After treatment, the wet friction coefficient was measured at 0.73, meeting the requirements of GB 50763-2012 "Accessibility Design Standard". A follow-up test after 6 months showed that the wet friction coefficient remained above 0.68, with no significant discoloration or residue, and positive feedback from patients and medical staff.

[0076] Application Example 2:

[0077] The hotel kitchen countertop is made of marble. It was treated with the anti-slip agent prepared in Example 4, which increased the wet friction coefficient from 0.32 to 0.76. After daily cleaning and wiping, the antibacterial performance was tested after 3 months, showing a 96.2% inhibition rate against E. coli and a maintained anti-slip coefficient of 0.71, demonstrating long-lasting effectiveness.

[0078] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A plant-based antibacterial and antislip agent, characterized in that, The product comprises the following components in parts by weight: 10-40 parts of plant-based antibacterial microcapsules; 20-60 parts of natural adhesive resin; 30-50 parts of environmentally friendly solvent; and 0.5-5 parts of additives. The plant-based antibacterial microcapsules are formed by a wall material encapsulating a core material, and the core material contains plant-derived antibacterial active substances.

2. The plant-based antibacterial and antislip agent as described in claim 1, characterized in that: The wall material of the plant-based antibacterial microcapsules is selected from natural polymer materials or synthetic biodegradable polymer materials; the natural polymer material is selected from at least one of gelatin, gum arabic, chitosan, and sodium alginate; the synthetic biodegradable polymer material is selected from at least one of polylactic acid and polycaprolactone.

3. A plant-based antibacterial and antislip agent as described in claim 1 or 2, characterized in that: The core material also includes a nanoporous adsorbent material, on which the plant-derived antibacterial active substance is loaded; the nanoporous adsorbent material is nano-silica aerogel with a specific surface area greater than 500 m² / g and a particle size of 10-100 nanometers.

4. The plant-based antibacterial and antislip agent as described in claim 3, characterized in that: The plant-derived antibacterial active substances include lipophilic or hydrophilic antibacterial active substances; the lipophilic antibacterial active substances are selected from at least one plant essential oil among cinnamaldehyde, citronellol, and thymol; the hydrophilic antibacterial active substances are selected from at least one plant extract among plant tannins, chitosan quaternary ammonium salts, tea polyphenols, and rosmarinic acid.

5. The plant-based antibacterial and antislip agent as described in claim 4, characterized in that: The hydrophilic antibacterial active ingredient comprises a combination of plant tannic acid, chitosan quaternary ammonium salt and tea polyphenol-rosmarinic acid complex, wherein the mass ratio of tea polyphenol to rosmarinic acid in the tea polyphenol-rosmarinic acid complex is 2:1 to 4:

1.

6. The plant-based antibacterial and antislip agent as described in claim 1, characterized in that: The natural adhesive resin is at least one of rosin resin, terpene resin, dammar resin, and modified starch-grafted acrylic acid copolymer; the modified starch-grafted acrylic acid copolymer is corn starch-g-sodium acrylate, with a grafting rate of 15% to 25% and a weight-average molecular weight of 8 × 10⁻⁶. 4 ~2×10 5 .

7. The plant-based antibacterial and antislip agent as described in claim 1, characterized in that: The additives include natural polyol moisturizers, wetting agents, defoamers, and pH adjusters; the natural polyol moisturizers are selected from at least one of glycerin, sorbitol, and erythritol; the wetting agents are alkyl glycosides; the defoamers are polyether-modified silicone oils; and the pH adjusters are citric acid or sodium bicarbonate, used to adjust the pH of the system to 6.5–7.

5.

8. A method for preparing a plant-based antibacterial and antislip agent as described in any one of claims 1-7, characterized in that, When the plant-derived antibacterial active substance contains lipophilic plant essential oils, the following steps are included: S1. Preparation of composite core material: Stir and adsorb plant essential oil and nano silica aerogel at 30-50℃ for 2-4 hours to load plant essential oil in the pores of aerogel and obtain composite core material. S2. Preparation of microcapsules: The composite core material obtained in step S1 is coated by composite coagulation method or emulsion solvent evaporation method to form a plant-based antibacterial microcapsule suspension. Among them, when using the composite coagulation method, gelatin and gum arabic are used as wall materials, and composite coagulation occurs under the conditions of pH 3.5-4.5 and temperature 40-50℃, and then a crosslinking agent is added for curing; when using the emulsion solvent evaporation method, polylactic acid is used as wall material, and the composite core material is dispersed in the organic solvent of polylactic acid, and the solvent is evaporated after emulsification. S3, Compounding: Dissolve the natural adhesive resin in a portion of the environmentally friendly solvent, add the microcapsule suspension obtained in step S2, the remaining environmentally friendly solvent and additives while stirring, and disperse evenly to obtain the final product.

9. A method for preparing a plant-based antibacterial and antislip agent as described in any one of claims 1-7, characterized in that: When the plant-derived antibacterial active substance contains hydrophilic plant extracts, the following steps are included: S1. Preparation of core material solution: Dissolve hydrophilic plant extracts in water to prepare a core material aqueous solution; S2. Preparation of microcapsules: The aqueous solution of the core material is coated by reverse emulsification or spray drying to form plant-based antibacterial microcapsule powder or suspension; Among them, when using the reverse emulsification method, polylactic acid is used as the wall material, the organic solution of polylactic acid is used as the oil phase, and the aqueous solution of the core material is used as the aqueous phase. The emulsion is formed by emulsification and the solvent is evaporated and cured. When using the spray drying method, sodium alginate or chitosan is used as the wall material. The aqueous solution of the core material is mixed with the wall material solution and then spray dried. S3. Compounding: Dissolve the natural adhesive resin in a portion of the environmentally friendly solvent, add the microcapsules obtained in step S2, the remaining environmentally friendly solvent and additives while stirring, and disperse evenly to obtain the final product.