Antibacterial and antioxidant PQQ silver ion laundry detergent and process thereof

Abstract

The invention relates to the technical field of detergents, and discloses an antibacterial and antioxidant PQQ silver ion laundry detergent and a process thereof, and the antibacterial and antioxidant PQQ silver ion laundry detergent comprises the following components: 0.05-0.15 part of pyrroloquinoline quinone; the silver ion concentration of the silver ion solution ranges from 1000 ppm to 2000 ppm, and the pH value of the silver ion solution ranges from 5.5 to 6.5; 5 to 10 parts of cocamidopropyl betaine; 3 to 7 parts of fatty alcohol-polyoxyethylene ether; 6 to 12 parts of fatty alcohol polyoxyethylene ether sodium sulfate; 2-5 parts of coconut oil fatty acid ethanol amide; 1-4 parts of a composite softener, wherein the composite softener is a compound containing a cationic polymer; and 0.5-3 parts of composite plant essential oil, wherein the composite plant essential oil comprises lavender essential oil and tea tree essential oil or rosemary essential oil. By introducing the PQQ, the stabilized silver ions, the titanium dioxide and the multifunctional surface activity system, the comprehensive washing effects of strong cleaning power, lasting antibacterial property, excellent oxidation resistance and soft and protective fabric are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of detergents, and particularly to an antibacterial and antioxidant PQQ silver ion laundry detergent and its process. Background Art

[0002] The laundry detergent products widely used in the current market are mainly aimed at decontamination and cleaning, and mainly rely on surfactant systems to achieve the emulsification, dispersion and dissolution of common stains. On this basis, to meet the needs of consumers for multi-functional washing and care, some products further introduce auxiliary components such as antibacterial agents, softeners, plant essential oils and antioxidant components to improve the overall use experience and functionality. However, most of these multi-component compounding technical paths are based on the traditional linear addition mode, and fail to achieve synergistic integration in the functional mechanism, and it is difficult to form a composite washing and care system with stable performance and complementary synergistic effects.

[0003] In terms of structure, the existing technologies use non-ionic and anionic surfactants such as AEO and AES as the main body, supplemented by washing aids such as CDEA to build a cleaning system, and at the same time introduce conventional antibacterial components such as silver ions and triclosan, as well as natural essential oils such as lavender and eucalyptus oil for fabric care. However, there are still many problems in specific applications: for example, the stability of silver ions is poor, it is easy to form precipitates, and the bactericidal effect is difficult to be continuously released; natural antioxidant components such as tea polyphenols and vitamins are easily oxidized and inactivated during storage or use, resulting in yellowing and aging of fabrics during repeated washing; the surfactant system has strong irritation to fibers and poor softness; and the cleaning system lacks the ability to synergistically degrade complex biological stains (such as tea stains, fruit juices, etc.), and the overall washing effect is limited. These problems all indicate that the existing technologies have significant deficiencies in realizing the integration of multiple functions of "antibacterial + antioxidant + soft care + high-efficiency cleaning", and there is still a lack of a comprehensive technical solution that can achieve component synergy, mechanism complementarity and structural stability. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technologies, the present invention provides an antibacterial and antioxidant PQQ silver ion laundry detergent and its process, which solves the problems of poor antibacterial stability, insufficient antioxidant capacity, limited fabric protection effect and poor multi-functional synergistic performance of the existing laundry detergents.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: an antibacterial and antioxidant PQQ silver ion laundry detergent and its process, comprising the following components:

[0006] 0.05 - 0.15 parts of pyrroloquinoline quinone;

[0007] 0.1 - 0.5 parts of silver ion solution, the silver ion concentration of the silver ion solution is 1000 - 2000 ppm, and the pH value is 5.5 - 6.5;

[0008] 5 - 10 parts of cocamidopropyl betaine;

[0009] 3 - 7 parts of fatty alcohol polyoxyethylene ether;

[0010] 6 - 12 parts of sodium lauryl polyoxyethylene ether sulfate;

[0011] 2 - 5 parts of coconut oil fatty acid ethanolamide;

[0012] 1 - 4 parts of compound softener, and the compound softener is a complex containing a cationic polymer;

[0013] 0.5 - 3 parts of compound plant essential oil, and the compound plant essential oil includes lavender essential oil and tea tree essential oil or rosemary essential oil;

[0014] 0.2 - 1 part of titanium dioxide, and the titanium dioxide is micron - sized titanium dioxide;

[0015] 0.1 - 0.5 part of phycocyanin;

[0016] Purified water is added to make up 100 parts.

[0017] Preferably, the silver ion solution uses a citric acid chelating stabilizer and is processed under the condition that the pH value is 5.5 - 6.5.

[0018] Preferably, the fatty alcohol polyoxyethylene ether is C12 - 14 alkyl alcohol polyoxyethylene ether.

[0019] Preferably, the compounding process of the surfactant is carried out at 50 - 60 °C, the stirring speed is 300 - 500 rpm, and the stirring time is 15 - 20 minutes.

[0020] Preferably, the titanium dioxide is micron - sized titanium dioxide with a particle size of 0.2 - 0.5 μm.

[0021] A preparation process of an antibacterial and antioxidant PQQ silver ion laundry detergent includes the following steps:

[0022] Step (1): Mix the silver ion solution with a polymer chelating agent, adjust the pH to 5.5 - 6.5, and stir until uniform;

[0023] Step (2): Add PQQ to the water phase and form a microemulsion through high - pressure homogenization, and adjust the pH of the solution to 6.0 - 7.0;

[0024] Step (3): Mix surfactants AEO - 9, AES, CAB, and CDEA in purified water, stir evenly to form a basic washing solution;

[0025] Step (4): Mix the solutions obtained in step (1) and step (2) with the basic washing solution obtained in step (3), and stir evenly;

[0026] In step (5), add a composite softener, plant essential oil, titanium dioxide and phycocyanin, and continue to stir evenly until the formula is stable.

[0027] In step (6), fill and conduct quality inspection on the final product to ensure that it meets the standard requirements of the laundry detergent.

[0028] Preferably, the pressure of the high-pressure homogenization treatment in step (2) is 80 - 150 MPa, and the number of cycles is 3 - 5 times; the stirring speed in step (4) is 200 - 300 rpm, and the stirring time is 10 - 15 minutes.

[0029] The present invention provides an antibacterial and antioxidant PQQ silver ion laundry detergent and its process. It has the following beneficial effects:

[0030] 1. By adopting the technical scheme of the synergistic slow release of PQQ and silver ions, the present invention realizes the dual enhancement of antibacterial and antioxidant activities. In actual use, the two are released synergistically in the PLGA encapsulation structure, prolonging the action time. Compared with the addition mode of a single antioxidant or antibacterial component in the prior art, it avoids the problems of short-term peak and rapid failure, and effectively overcomes the technical bottlenecks of unstable components and poor effect persistence.

[0031] 2. The present invention constructs a controlled release structure with PLGA as the core to dynamically regulate the release rhythm of silver ions and PQQ, and the components are released more uniformly and stably during the washing process. Different from the prior art laundry detergents where the release is out of control due to the influence of pH and temperature fluctuations, this design realizes the physical regulation of the drug-loading behavior through the physical degradation characteristics of the material, fundamentally solving the problems of component inactivation or efficacy fluctuation.

[0032] 3. By combining a non-ionic surfactant, a stabilizer and a slow release system, the present invention forms a high degree of structural synergy, enabling the laundry detergent to maintain dispersion uniformity in a complex washing environment. In the prior art, mechanical stirring or excessive use of additives are mostly used to maintain stability, while the present invention can achieve long-term stable storage and use without relying on high-dose addition, significantly simplifying the system design requirements and reducing the cost burden.

[0033] 4. The present invention constructs an efficient release system suitable for low-concentration silver ions by using a quantitative ratio design, achieving high activity output with low dosage. Compared with the existing products that rely on high silver ion concentration to maintain antibacterial effects, it not only avoids the risk of heavy metal residues, but also circumvents problems such as increased raw material costs and expanded environmental toxicity, improving safety and sustainability. Description of the Drawings

[0034] Figure 1 It is a process step diagram of the present invention. Detailed Embodiments

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to the attached Figure 1 , the embodiments of the present invention provide an antibacterial and antioxidant PQQ silver ion laundry detergent and its process, including:

[0037] An antibacterial and antioxidant PQQ silver ion laundry detergent, including the following components:

[0038] Pyrroloquinoline quinone 0.05 - 0.15 parts;

[0039] Silver ion solution 0.1 - 0.5 parts, the silver ion concentration of the silver ion solution is 1000 - 2000 ppm, and the pH value is 5.5 - 6.5;

[0040] Cocamidopropyl betaine 5 - 10 parts;

[0041] Fatty alcohol polyoxyethylene ether (AEO-9) 3 - 7 parts;

[0042] Sodium lauryl polyoxyethylene ether sulfate (AES) 6 - 12 parts;

[0043] Coconut oil fatty acid ethanolamide (CDEA) 2 - 5 parts;

[0044] Compound softener 1 - 4 parts, the compound softener is a complex containing a cationic polymer;

[0045] Compound plant essential oil 0.5 - 3 parts, the compound plant essential oil includes lavender essential oil and tea tree essential oil or rosemary essential oil;

[0046] Titanium dioxide 0.2 - 1 part, the titanium dioxide is micron-sized titanium dioxide;

[0047] Phycocyanin 0.1 - 0.5 parts;

[0048] Purified water to 100 parts.

[0049] A preparation method of an antibacterial and antioxidant PQQ silver ion laundry detergent, including the following steps:

[0050] Step (1): Prepare a mixed solution of a silver ion solution and a polymer chelating agent

[0051] Mix the silver ion solution with the polymer chelating agent. The polymer chelating agent can stabilize the solubility of silver ions and prevent silver ions from precipitating or becoming ineffective due to reactions with other components. Then, adjust the pH of the mixed solution to the range of 5.5 - 6.5, which helps maintain the stability of silver ions and their antibacterial activity. Stir until the solution is homogeneous to ensure the full combination of silver ions and the chelating agent.

[0052] Step (2): Prepare the PQQ microemulsion

[0053] Add PQQ (pyrroloquinoline quinone) to the aqueous phase, and then through high-pressure homogenization treatment, make PQQ form a microemulsion. High-pressure homogenization treatment can atomize PQQ, ensure its uniform dispersion in water, and enhance its antioxidant performance. Adjust the pH of the solution to 6.0 - 7.0 to keep it in a stable range and avoid the degradation of PQQ under inappropriate pH conditions.

[0054] Step (3): Prepare the basic washing liquid

[0055] Mix surfactant AEO-9 (alcohol ethoxylate), AES (alcohol ethoxysulfate), CAB (epoxyethane diallyl dimethyl ammonium chloride), and CDEA (coconut amide DEA) in purified water in a suitable proportion and stir well until the solution is homogeneous. The purpose of this step is to construct the basic washing liquid and provide the main detergency.

[0056] Step (4): Mix the silver ion solution, PQQ microemulsion, and basic washing liquid

[0057] Mix the silver ion solution obtained in step (1), the PQQ microemulsion obtained in step (2), and the basic washing liquid obtained in step (3) together, and continue to stir until the solution is homogeneous. This step ensures the full integration of components such as silver ions, PQQ, and surfactants, enabling the laundry detergent to have antibacterial, antioxidant, and detergency functions.

[0058] Step (5): Add the composite softener, plant essential oil, titanium dioxide, and phycocyanin

[0059] Add the composite softener, plant essential oil, titanium dioxide, and phycocyanin to the mixed solution. The composite softener can increase the softness of the fabric, the plant essential oil provides a natural fragrance and care effect, titanium dioxide increases the antioxidant protection function, and phycocyanin helps improve the stability of the laundry detergent and enhance the skin affinity. Continue to stir evenly until the formula reaches a stable state to ensure the uniform distribution of each component and no precipitation.

[0060] Step (6): Filling and quality inspection

[0061] The finally formulated laundry detergent is filled and subjected to quality inspection. The inspection contents include pH value, stability, cleaning effect, antibacterial effect, antioxidant capacity, and safety, etc., to ensure that the laundry detergent meets the industry standards and has good usability and safety.

[0062] Example 1: Preparation of antibacterial and antioxidant PQQ silver ion laundry detergent

[0063] Formulation composition (parts by mass):

[0064] Pyrroloquinoline quinone (PQQ): 0.1

[0065] Silver ion solution (silver ion concentration 1500 ppm): 0.3

[0066] AEO-9: 5

[0067] AES: 9

[0068] CDEA: 4

[0069] Compound softener: 2

[0070] Plant essential oil (mixture of lavender essential oil and tea tree essential oil): 2

[0071] Titanium dioxide: 0.5

[0072] Phycocyanin: 0.2

[0073] Purified water: up to 100

[0074] Steps:

[0075] First, mix the silver ion solution with the citric acid solution, and adjust the pH to 6.0 under stirring to ensure that the silver ions do not precipitate.

[0076] Add PQQ to the purified water at 50 °C, and dissolve it by high-speed stirring until it is completely homogeneous to form a transparent solution.

[0077] While stirring, add AEO-9, AES, and CDEA to the mixed solution in sequence to ensure complete dissolution at room temperature.

[0078] Mix the above solution with the silver ion solution obtained in step 1, and stir for another 10 minutes.

[0079] Add the compound softener, plant essential oil (lavender essential oil and tea tree essential oil mixed in proportion), and titanium dioxide, and continue to stir evenly. The stirring conditions are controlled at 200 rpm, and the temperature is maintained at 30 °C.

[0080] Finally, add phycocyanin to ensure that all components are fully blended. The product is subjected to quality inspection, confirmed to meet the laundry detergent standards, and finally packaged.

[0081] This formulation is superior to traditional laundry detergents in terms of detergency and antibacterial effect. The introduction of silver ions effectively enhances the antibacterial ability, while the antioxidant properties of PQQ reduce fabric oxidation damage.

[0082] Example 2: Preparation of High-Efficiency Detergent PQQ Silver Ion Laundry Detergent

[0083] Formulation composition (parts by mass):

[0084] Pyrroloquinoline quinone (PQQ): 0.08

[0085] Silver ion solution (silver ion concentration 2000 ppm): 0.2

[0086] AEO-9: 6

[0087] AES: 8

[0088] CDEA: 5

[0089] Compound softener: 3

[0090] Plant essential oil (rosemary essential oil): 1

[0091] Titanium dioxide: 0.3

[0092] Phycocyanin: 0.1

[0093] Purified water: up to 100

[0094] Steps:

[0095] First, mix the silver ion solution with an appropriate amount of citric acid, adjust to pH 6.2, and ensure the complete stability of silver ions under stirring.

[0096] Add PQQ to purified water and stir at high speed until completely dissolved to obtain a homogeneous solution.

[0097] Gradually add surfactants AEO-9, AES, and CDEA, and continue to stir at room temperature for 10 minutes until the solution is homogeneous.

[0098] Mix the silver ion solution from Step 1 with the PQQ solution and stir evenly for no more than 5 minutes.

[0099] Add the compound softener and rosemary essential oil in proportion and stir until completely dissolved.

[0100] Finally, add titanium dioxide and phycocyanin, adjust the stirring speed to 250 rpm, maintain the temperature at 25 °C, and stir for 15 minutes until completely blended.

[0101] Conduct a final inspection, and after ensuring that the product has no precipitation and meets the stability requirements, package it.

[0102] In this example, by optimizing the ratio of surfactant and plant essential oil, the detergency performance and softening effect after washing are enhanced. At the same time, the addition of titanium dioxide effectively improves the whitening effect, making the color of the washed clothes brighter.

[0103] Example 3: Preparation of Long-lasting Antibacterial PQQ Silver Ion Laundry Detergent

[0104] Formulation composition (parts by mass):

[0105] Pyrroloquinoline quinone (PQQ): 0.1

[0106] Silver ion solution (silver ion concentration 1000 ppm): 0.4

[0107] AEO-9: 5

[0108] AES: 10

[0109] CDEA: 3

[0110] Compound softener: 4

[0111] Plant essential oil (tea tree essential oil): 1.5

[0112] Titanium dioxide: 0.3

[0113] Phycocyanin: 0.2

[0114] Purified water: up to 100

[0115] Steps:

[0116] Mix the silver ion solution with citric acid, adjust to pH 6.3, and keep stable under low-speed stirring.

[0117] Add PQQ to the aqueous phase, control the temperature at 40 °C, and stir with a stirrer until completely dissolved.

[0118] Add AEO-9, AES, and CDEA, keep the stirring speed at 300 rpm, and ensure the solution is uniform.

[0119] Mix the silver ion solution with the PQQ solution, continue stirring for 15 minutes, and ensure the solution is uniform and stable.

[0120] Add the compound softener and plant essential oil (tea tree essential oil), and stir for 10 minutes.

[0121] Finally, add titanium dioxide and phycocyanin, continue stirring for 20 minutes, and ensure that all components are completely dissolved and fully combined.

[0122] Conduct quality inspection on the product to ensure stability and compliance with the relevant standards of laundry detergent, and finally carry out filling.

[0123] By increasing the silver ion concentration and using a long-acting antibacterial formula, the antibacterial persistence of the laundry detergent in this example is greatly improved. At the same time, the addition of a composite fabric softener and plant essential oils ensures the softness of the fibers and antibacterial ability after washing. The use of titanium dioxide improves the whitening effect of the laundry detergent.

[0124] Example 4: Preparation of Antibacterial and Antioxidant PQQ Silver Ion Laundry Detergent

[0125] Formulation composition (parts by mass):

[0126] Pyrroloquinoline quinone (PQQ): 0.12

[0127] Silver ion solution (silver ion concentration 1200 ppm): 0.25

[0128] AEO-9: 7

[0129] AES: 8

[0130] CDEA: 2

[0131] Composite fabric softener: 3

[0132] Plant essential oils (mixture of rosemary essential oil and lavender essential oil): 1

[0133] Titanium dioxide: 0.4

[0134] Phycocyanin: 0.1

[0135] Purified water: up to 100

[0136] Steps:

[0137] Mix the silver ion solution and citric acid, adjust to pH 6.0, and stir slowly until homogeneous.

[0138] Add PQQ to purified water, stir and dissolve with a stirrer at 45 °C to ensure complete dissolution of PQQ.

[0139] At room temperature, add AEO-9, AES and CDEA, and stir for 5 minutes to ensure complete dissolution.

[0140] Mix the silver ion solution in Step 1 with the PQQ solution in Step 2 and stir for 10 minutes.

[0141] Add the composite fabric softener and the mixture of rosemary and lavender essential oils, and stir until homogeneous.

[0142] Finally, add titanium dioxide and phycocyanin, adjust the stirring speed to 300 rpm, control the temperature at 30 °C, and stir for 20 minutes until the solution is stable.

[0143] After testing to ensure the stability, detergency and antibacterial performance of the laundry detergent, it is packaged.

[0144] In this embodiment, by combining plant essential oils and titanium dioxide, the antibacterial, antioxidant and whitening effects of the laundry detergent are enhanced. The stability and ratio optimization of silver ions make this formulation perform excellently in terms of detergency and bacteria inhibition.

[0145] Comparative Example 1 (corresponding to Example 1, removing PQQ)

[0146] Difference: PQQ is not added, and the other components are the same as those in Example 1.

[0147] Preparation process:

[0148] The preparation and stabilization process of the silver ion solution remains unchanged;

[0149] Directly enter the step of adding surfactants (AEO-9, AES, CDEA);

[0150] Subsequently, add softener, plant essential oil, titanium dioxide and phycocyanin;

[0151] The stirring conditions and temperature control are the same as those in the example.

[0152] Purpose: To verify the difference in antioxidant ability when PQQ is not introduced, and highlight the unique contribution of PQQ as a co-antioxidant component.

[0153] Comparative Example 2 (corresponding to Example 2, silver ions not stabilized)

[0154] Difference: No citric acid or other chelating agents are added to the silver ion solution, and it is directly prepared and used with a water-soluble silver salt.

[0155] Preparation process:

[0156] Directly prepare the silver ion solution with an aqueous solution of silver nitrate without adjusting the pH;

[0157] Directly mix the unstabilized silver ion solution with other components;

[0158] The remaining steps are the same as those in Example 2.

[0159] Purpose: To compare the effects between stabilized and non-stabilized silver ions, and highlight the significance of the stabilization treatment for ion release control and long-term antibacterial effect.

[0160] Comparative Example 3 (corresponding to Example 3, only using AES without using a composite surfactant)

[0161] Difference: Only AES is used as the surfactant, and AEO-9 and CDEA are not added.

[0162] Preparation process:

[0163] The pretreatment method of PQQ and silver ion solution remains unchanged;

[0164] Only 10 parts of AES are used as the washing base;

[0165] The addition sequence of the rest, such as softener, plant essential oil, titanium dioxide, phycocyanin, etc., remains unchanged.

[0166] Purpose: To compare the washing performance differences between the composite surfactant and single surfactant systems, and to reflect the advantages of the synergistic effect of surfactants.

[0167] Comparative Example 4 (corresponding to Example 4, plant essential oil used alone)

[0168] Differentiating point: Remove the softener, and only add 1.5 parts of plant essential oil (such as lavender), and the other components and dosages remain unchanged.

[0169] Preparation process:

[0170] Retain the PQQ, silver ion, and surfactant systems;

[0171] Delete the composite softener, and only retain the plant essential oil addition step;

[0172] The rest of the operations are the same.

[0173] Purpose: To compare the effect differences between using plant essential oil alone and the composite softener plant system, and to verify the complementarity between the two in terms of softness and fabric protection.

[0174] Comparative Example 5 (corresponding to Example 2, titanium dioxide removed)

[0175] Differentiating point: Do not add titanium dioxide, and retain all other components and steps.

[0176] Preparation process:

[0177] The preparation of silver ion and PQQ water is the same;

[0178] The surfactant and other components are added according to Example 2;

[0179] Do not add titanium dioxide;

[0180] The stirring process and other conditions are the same.

[0181] Purpose: To analyze whether titanium dioxide plays a synergistic role in cleaning ability and whitening effect, and to inversely prove its rationality in the formula of the present invention.

[0182] Comparative Example 6 (corresponding to Example 1, PQQ not homogenized)

[0183] Differentiating point: PQQ is not treated by high-shear or high-pressure homogenization, and is only stirred and dissolved at room temperature.

[0184] Preparation process:

[0185] Directly put PQQ into cold water and stir;

[0186] Treat the silver ion solution normally;

[0187] The remaining additives are the same as the stirring step.

[0188] Purpose: To compare the effects of different dispersion methods of PQQ on stability and dissolution state, and to reflect the key role of homogenization technology in the stability of antioxidant components.

[0189] Comparative Example 7 (corresponding to Example 3, removing phycocyanin)

[0190] Differences: Do not add phycocyanin. Other formulations remain unchanged.

[0191] Preparation process:

[0192] Normally configure the PQQ and silver ion solutions;

[0193] The addition sequence of the surfactant system, softener, plant essential oil and titanium dioxide is the same as that in the example;

[0194] In the final stage, do not add phycocyanin, and directly perform final mixing and filling.

[0195] Purpose: To compare the differences with and without phycocyanin, and to investigate whether its possible adjustment effect on color and liquid appearance in the formulation is necessary.

[0196] Experimental examples

[0197] Experimental materials and equipment:

[0198] Experimental materials:

[0199] Test samples: Examples 1, 2, 3, 4 of the present invention and corresponding comparative examples

[0200] Standard experimental fabric: Cotton cloth without special coating (each fabric size is about 15cm x 15cm)

[0201] Pollutants: Artificial oil stains, fruit juices, tea stains, etc.

[0202] Microbial inoculation solutions: Escherichia coli, Staphylococcus aureus solutions

[0203] Chemical reagents such as PQQ, silver ions, titanium dioxide, AEO-9, AES, CDEA

[0204] Standardized experimental water source: Water quality meets national standards, and the temperature is controlled at 25°C

[0205] Conventional laundry equipment (including washing machines, manual washing tools)

[0206] Experimental equipment:

[0207] Standard washing machine (5 kg capacity)

[0208] Ultraviolet sterilizer

[0209] Microbial counter

[0210] Electronic balance

[0211] UV-Vis spectrophotometer

[0212] Experimental procedures:

[0213] Pretreatment before experiment:

[0214] Wash the standard experimental fabric to ensure no attachments or chemical residues.

[0215] Prepare experimental stains (oil stains, tea stains, and fruit juice stains), apply these stains to the fabric surface, and conduct tests after drying.

[0216] Cleaning effect test:

[0217] Wash each sample (Examples 1, 2, 3, 4, and the comparative example) according to the standard usage concentration (usually 5 g laundry detergent / L water).

[0218] During the washing process, use a standard washing machine for 30 minutes of regular cleaning.

[0219] After washing, take out the fabric and dry it.

[0220] Measure the stain removal rate (especially for oil stains, tea stains, fruit juice stains, etc.) through visual inspection and color difference meter, and record the data.

[0221] Antibacterial effect test:

[0222] Expose the test fabric to Escherichia coli solution and then wash it according to the standard experimental procedure.

[0223] After washing, inoculate the fabric with microorganisms and culture it, and use the plate counting method to measure the number of bacteria remaining on each test sample.

[0224] Evaluate the antibacterial effect by calculating the sterilization rate (comparing the total number of colonies before and after washing).

[0225] Antioxidant effect test:

[0226] Measure the oxidation degree of the washed fabric using a UV-Vis spectrophotometer.

[0227] Compare the antioxidant properties of the fabrics after washing different samples and observe their antioxidant capabilities (referring to the degree of fabric color change).

[0228] Fabric protection effect test:

[0229] After each washing, use a fabric strength test device to determine the tensile strength and ductility of the fabric.

[0230] Evaluate the softness and protection of the fabric with different formulations, record the tensile test results, and measure the wear of the fabric.

[0231] Experimental data:

[0232]

[0233]

[0234] By comparing the comprehensive performance tests of the examples and the comparative examples, it is obvious that the present invention is significantly superior to the prior art in multiple technical effects. First of all, in terms of the removal rates of oil stains and tea stains, the examples all show high decontamination effects. Especially in Example 1 and Example 2, the synergistic effect of PQQ and silver ions is combined to improve the decontamination ability and antibacterial property during the washing process. This effect is closely related to the antioxidant property of PQQ. The introduction of PQQ effectively prevents the oxidative degradation of the fabric during washing and enhances the protection of the fabric.

[0235] Secondly, in terms of the antibacterial effect, the sterilization rates of the examples are generally higher than those of the comparative examples. Among them, Example 2 uses a stabilized silver ion solution to ensure the more persistent release of silver ions, further enhancing the antibacterial effect of the fabric after washing. This feature highlights the advantage of silver ions in controlling the growth and spread of bacteria and solves the problems of unstable silver ions and non-persistent antibacterial effect in the prior art.

[0236] Finally, in terms of antioxidant performance and fabric protection, the examples effectively improve the antioxidant ability of the fabric by combining the composite technology of titanium dioxide and plant essential oils, reducing the wear and decline of the fabric during multiple washings. While for the samples in the comparative examples that remove titanium dioxide and phycocyanin, there is an obvious decrease in antioxidant ability, further proving the important role of these components in the technical solution of the present invention.

[0237] In summary, through the synergistic effect of multiple innovative components such as PQQ, silver ions, and titanium dioxide, the present invention is superior to the prior art in overall performance, especially showing unique advantages in antibacterial, antioxidant, and fabric protection.

[0238] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antibacterial and antioxidant PQQ silver ion laundry detergent, characterized in that, It includes the following components: Pyrroloquinoline quinone: 0.05 - 0.15 parts; Silver ion solution: 0.1 - 0.5 parts, where the silver ion concentration of the silver ion solution is 1000 - 2000 ppm and the pH value is 5.5 - 6.5; Cocamidopropyl betaine: 5 - 10 parts; Fatty alcohol polyoxyethylene ether: 3 - 7 parts; Sodium lauryl ether sulfate: 6 - 12 parts; Coconut oil fatty acid ethanolamide: 2 - 5 parts; Compound softener: 1 - 4 parts, and the compound softener is a complex containing a cationic polymer; Compound plant essential oil: 0.5 - 3 parts, and the compound plant essential oil includes lavender essential oil and tea tree essential oil or rosemary essential oil; Titanium dioxide: 0.2 - 1 part, and the titanium dioxide is micron-sized titanium dioxide; Phycocyanin: 0.1 - 0.5 part; Purified water up to 100 parts.

2. The antibacterial and antioxidant PQQ silver ion laundry detergent according to claim 1, characterized in that, The silver ion solution uses a citric acid chelating stabilizer and is treated under the condition of a pH value of 5.5 - 6.

5.

3. An antibacterial and antioxidant PQQ silver ion laundry detergent according to claim 1, characterized in that, The fatty alcohol polyoxyethylene ether is C12 - 14 alkyl alcohol polyoxyethylene ether.

4. An antibacterial and antioxidant PQQ silver ion laundry detergent according to claim 1, characterized in that, The compounding process of the surfactants is carried out at 50 - 60 °C, the stirring speed is 300 - 500 rpm, and the stirring time is 15 - 20 minutes.

5. The antibacterial and antioxidant PQQ silver ion laundry detergent according to claim 1, characterized in that, The titanium dioxide is micron-sized titanium dioxide with a particle size of 0.2 - 0.5 μm.

6. A preparation process of an antibacterial and antioxidant PQQ silver ion laundry detergent, for an antibacterial and antioxidant PQQ silver ion laundry detergent according to any one of claims 1-5, characterized in that, It includes the following steps: Step (1): Mix the silver ion solution with a polymer chelating agent, adjust the pH to 5.5 - 6.5, and stir until uniform; Step (2): Add PQQ to the water phase and form a microemulsion through high-pressure homogenization, and adjust the solution pH to 6.0 - 7.0; Step (3): Mix the surfactants AEO-9, AES, CAB, and CDEA in purified water and stir evenly to form a basic washing solution; Step (4): Mix the solutions obtained in Step (1) and Step (2) with the basic washing solution obtained in Step (3) and stir evenly; Step (5): Add the compound softener, plant essential oil, titanium dioxide, and phycocyanin, and continue to stir evenly until the formula is stable. Step (6): Fill and conduct quality inspection on the final product to ensure that it meets the standard requirements of the laundry detergent.

7. The preparation process of an antibacterial and antioxidant PQQ silver ion laundry detergent according to claim 6, characterized in that, In Step (2), the pressure of the high-pressure homogenization treatment is 80 - 150 MPa and the number of cycles is 3 - 5 times; in Step (4), the stirring speed is 200 - 300 rpm and the stirring time is 10 - 15 minutes.

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