Natural plant polyphenol compound capable of removing organic pollutants and preparation method thereof

Abstract

The invention discloses a natural plant polyphenol compound capable of removing organic pollutants and a preparation method thereof. The compound comprises a natural plant extract containing an active component, a surfactant and persulfate, and the active component comprises a polyphenol active component or the polyphenol active component and a flavonoid active component. The compound can effectively remove organic pollutants, in some specific embodiments, the removal rate of the compound to formaldehyde reaches 92.2%, the removal rate of the compound to a mixture of benzene, methylbenzene and xylene reaches 99.5%, meanwhile, the removal process is completed spontaneously, and the compound is free of energy consumption, low in cost, non-toxic, harmless, free of secondary pollution and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of natural plant polyphenol compounds, in particular to a natural plant polyphenol compound with an organic pollutant removal effect. Background Art

[0002] With the development of the chemical industry, more and more synthetic materials have appeared in people's lives, bringing great convenience, but at the same time, the accompanying organic pollutant problems have also received more and more attention.

[0003] Organic pollutants, specifically volatile organic compounds, referred to as VOCs, include hydrocarbons, halogenated hydrocarbons, oxygenated hydrocarbons and nitrogen hydrocarbons, including benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbon compounds. Among them, the paint used in the process of home decoration is one of the main sources of indoor organic pollutants. In addition, inks, organic solvents, glues used in footwear products, correction fluids, scented toys, paints, adhesives, cleaning solvents for electronic hardware, etc. are also common sources of organic pollutants. Studies have shown that long-term exposure to excessive organic pollutants in indoor environments will cause irreversible damage to the human nervous system and respiratory system, and may even lead to leukemia and cancer.

[0004] The following methods are mainly used to solve organic pollutants in the prior art: adsorption method, absorption method, photocatalysis method, plasma method. Among them, the adsorption method is a method for adsorbing organic pollutant molecules on the surface and pores of porous materials to achieve the purpose of removing indoor organic pollutants. Its disadvantages are slow adsorption rate, easy saturation, and easy desorption; the absorption method is a method for dissolving organic pollutants in liquids by using the similarity principle and solubility principle between solutions and organic pollutants. Its disadvantage is that it is easy to produce secondary pollution. Some absorption solutions have odors or are environmental pollutants themselves; the photocatalysis method is a method for oxidizing organic pollutants under the stimulation of light of a certain wavelength through a series of catalytic effects. Its disadvantage is that it is greatly affected by the light source and is easy to cause inhalable dust pollution; the plasma method is a method of oxidizing and decomposing organic pollutants in the air by using high-voltage and high-pulse discharge equipment to break through the air to form a plasma electric field, and through collision and oxidation reactions, the organic pollutants in the air are oxidized and decomposed. Its disadvantage is high cost and unknown safety. In addition, there is also a method of treating organic pollutants using the oxidation of chlorine dioxide, but chlorine dioxide has a pungent smell similar to chlorine, and is highly irritating to the skin and respiratory tract at high concentrations. Long-term use will cause health problems in the human body. Summary of the invention

[0005] The purpose of the present invention is to provide a natural plant polyphenol activation complex capable of removing organic pollutants and a preparation method thereof in view of the deficiencies in the prior art. The complex can utilize a ternary system consisting of polyphenol compounds in plants, a surfactant and a persulfate to generate free radicals with the function of oxidatively degrading volatile organic matter through organic activation, thereby achieving the function of removing organic pollutants. The complex has the characteristics of low cost, good treatment effect, no secondary pollution, non-toxicity, harmlessness and environmental friendliness.

[0006] The present invention first provides the following technical solution:

[0007] A natural plant polyphenol complex that removes organic pollutants, including:

[0008] A natural plant extract containing active ingredients, a surfactant and a persulfate, wherein the surfactant is selected from one or more of anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants;

[0009] Wherein, the active ingredients include polyphenol active ingredients;

[0010] Or, wherein the active ingredients include polyphenol active ingredients and flavonoid active ingredients.

[0011] Preferably, the active ingredient is flavonoid plant polyphenols.

[0012] In the above technical solution, the natural plant extract containing active ingredients is extracted from natural plants. The plant polyphenols refer to a class of plant secondary metabolites carrying one or more phenolic hydroxyl groups in the molecular structure, such as phenolic acids, stilbenes, flavonoids, flavanols, anthocyanins, proanthocyanidins, hydrolyzed tannins, lignin, etc. Due to the uniqueness of the plant polyphenol structure, it has antioxidant, free radical scavenging, anti-inflammatory, antibacterial, antiviral and other effects.

[0013] Flavonoid polyphenols in plant polyphenols have a typical flavonoid structure, that is, a C6-C3-C6 structure formed by a pyran ring connecting two benzene rings, which can more easily produce electron delocalization and act as an electron donor to induce electron transfer in persulfate ions to form sulfate free radicals. The redox potential of sulfate free radicals is higher than that of persulfate ions, so that the organic matter removal effect of the resulting complex is better.

[0014] According to some preferred embodiments of the present invention, the natural plant is selected from the group consisting of Ginkgoaceae, Pinaceae, Taxaceae, Cupressaceae, Podocarpaceae, Taxaceae, Magnoliaceae, Annonaceae, Lauraceae, Piperaceae, Peduncleaceae, Juglandaceae, Ranunculaceae, Nymphaeaceae, Eucommiaceae, Betulaceae, Cactaceae, Portulacaceae, Caryophyllaceae, Theaceae, Hypericaceae, Sterculiaceae, Kapokaceae, Malvaceae, Cucurbitaceae, Cruciferae, Diospyros, Ericaceae, Rosaceae, Mimosaceae, Caesalpiniaceae, Fabaceae, One or more of the following plants: Elaeagnaceae, Thymelaeaceae, Myrtaceae, Onagraceae, Santalum, Aquifoliaceae, Vitaceae, Linaceae, Sapindaceae, Oleaceae, Anacardiaceae, Rutaceae, Araliaceae, Apiaceae, Gentianaceae, Apocynaceae, Solanaceae, Asclepiadaceae, Verbenaceae, Lamiaceae, Oleaceae, Scrophulariaceae, Campanulaceae, Rubiaceae, Caprifoliaceae, Patriniaceae, Asteraceae, Palmaceae, Araceae, Cyperaceae, Poaceae, Zingiberaceae, Liliaceae, Terrestris, Iridaceae, and Orchidaceae.

[0015] According to some preferred embodiments of the present invention, the natural plant is selected from one or more of green tea, black tea, oolong tea, Pu'er tea, white tea, Japanese cypress, hops, persimmon leaves, rosemary, wormwood, rhodiola rosea, masson pine, bamboo leaves, juniper, juniper, oriental cypress, sophora flavescens, sweet orange peel, Centella asiatica, patchouli, mint, marigold, citronella, and thyme.

[0016] According to some preferred embodiments of the present invention, the surfactant is selected from one or more of polyoxyethylene sorbitan monolaurate, sodium lauryl sulfate, polyoxyethylene sorbitan monooleate, and cocamidopropyl betaine.

[0017] According to some preferred embodiments of the present invention, the persulfate is selected from potassium persulfate and / or sodium persulfate.

[0018] According to some preferred embodiments of the present invention, the natural plants include one or more of the following compositions: green tea, Japanese cypress, hops, persimmon leaves and rosemary; black tea, wormwood leaves and rhodiola rosea; masson pine, light bamboo leaves, juniper and green tea; sophora flavescens, sweet orange peel, Centella asiatica, and patchouli; mint, marigold, citronella and thyme.

[0019] According to some preferred embodiments of the present invention, the total phenol content of the natural plant extract containing active ingredients is 1 to 30 mg / g.

[0020] According to some preferred embodiments of the present invention, the total flavonoid content of the natural plant extract containing active ingredients is 30-80 mg / g.

[0021] According to some preferred embodiments of the present invention, the DPPH scavenging rate of the natural plant extract containing the active ingredient is 50-100%.

[0022] According to some preferred embodiments of the present invention, the mass ratio of the natural plant extract containing active ingredients to the surfactant and the persulfate is: 1-6: 0.1-1.5: 0.01-0.2.

[0023] According to some preferred embodiments of the present invention, the natural plant polyphenol compound further comprises 0.5-1% by weight of phenoxyethanol.

[0024] The present invention further discloses a method for preparing the above-mentioned natural plant polyphenol compound, which comprises:

[0025] Mixing and extracting the powders of the natural plants in the complex to obtain a mixed plant extract, i.e., the natural plant extract containing active ingredients;

[0026] Mixing the mixed plant extract, the surfactant and the persulfate with water to obtain the composite;

[0027] Wherein, the extraction adopts one or more of solvent extraction, microwave extraction, ultrasonic extraction, enzyme method, microbial fermentation method and supercritical fluid extraction method.

[0028] According to some preferred embodiments of the present invention, the preparation method specifically comprises:

[0029] The natural plants are crushed respectively to obtain powders of the natural plants;

[0030] Mix the powders of various natural plants and soak them in 70% ethanol solution to obtain an impregnation liquid containing the plant powders;

[0031] Using ultrasound and / or microwaves to treat the impregnation liquid containing the plant powder to obtain a treated impregnation liquid;

[0032] Mechanically stirring the treated impregnation liquid to obtain a crude extract containing plant powder;

[0033] The crude extract containing the plant powder is allowed to stand and soak for a long time, and then filtered using an organic filter membrane to obtain the mixed plant extract;

[0034] The mixed plant extract, the surfactant and the persulfate are mixed with water to obtain the composite.

[0035] According to some preferred embodiments of the present invention, the preparation method specifically comprises:

[0036] Grinding each natural plant separately to obtain powder of each natural plant;

[0037] Mixing the powders of various natural plants and soaking them in water to obtain an infusion containing the plant powders;

[0038] Mechanically stirring the treated impregnation liquid to obtain a crude extract containing plant powder;

[0039] Fermenting the crude extract containing the plant powder to obtain a fermented mixed plant extract;

[0040] Mixing the fermented mixed plant extract, the surfactant and the persulfate with water to obtain the composite;

[0041] The fermentation process comprises: sterilizing the crude extract containing plant powder, adding rice wine yeast to the sterilized crude extract for cultivation, sterilizing the fermentation liquid obtained by cultivation, and then performing solid-liquid separation, and the obtained liquid is the fermented mixed plant extract.

[0042] According to some preferred embodiments of the present invention, the complex contains: 1-6wt% of the natural plant extract containing active ingredients, 0.1-1.5wt% of the surfactant, 0.01-0.2wt% of the persulfate, 0.5-1wt% of phenoxyethanol and the balance water.

[0043] The present invention has the following beneficial effects:

[0044] The composite of the invention uses natural plants as raw materials, is non-toxic and harmless to the human body, utilizes a ternary system consisting of active ingredients such as polyphenol compounds in plants, surfactants and persulfate, and generates free radicals with the function of oxidatively degrading volatile organic matter through organic activation, thereby achieving the function of removing organic pollutants. The whole process is completed spontaneously, has no energy consumption, is low in cost, has good treatment effect, has no secondary pollution problem, is non-toxic and harmless, and is environmentally friendly.

[0045] In some specific embodiments, the complex of the present invention includes a plant extract containing a high concentration of polyphenols, which can activate persulfate through electron transfer to generate sulfate free radicals. Through the synergistic effect of the plant extract and persulfate, a good effect of removing organic pollutants is achieved.

[0046] By adding a surfactant to the complex of the present invention, the organic pollutants to be removed can be fully contacted with the plant extracts and persulfate containing high concentrations of polyphenol compounds and strong antioxidant capacity, which can further improve the dispersion performance of the organic pollutants in the complex solution and enhance the effect of oxidative degradation of the organic pollutants.

[0047] In some specific embodiments, the composite obtained by the present invention has a significant removal effect on common indoor volatile organic compounds (VOCs), such as a removal rate of 92.2% for formaldehyde and a removal rate of up to 99.5% for a mixture of benzene, toluene and xylene. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is the test result report of a third-party testing agency conducted in accordance with QB / T 2761-2006 "Method for Determining the Purification Effect of Indoor Air Purification Products" in the examples.

[0049] Figure 2 This is a test result report from a third-party testing agency based on QB / T 2761-2006 “Method for Determining the Purification Effect of Indoor Air Purification Products”. DETAILED DESCRIPTION

[0050] The present invention is described in detail below in conjunction with the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to exemplify the present invention and do not constitute any limitation on the protection scope of the present invention. All reasonable changes and combinations within the scope of the inventive concept of the present invention fall within the protection scope of the present invention.

[0051] In some specific embodiments, the natural plant polyphenol compound capable of removing organic pollutants of the present invention comprises the following components in percentage by mass: 5%-20% of plant extract containing active ingredients, 0.05%-1% of persulfate, and 0.2%-2% of surfactant.

[0052] Wherein, the plant extract is obtained by extracting natural plants.

[0053] The natural plant may be one or more of petals, fruits, branches and leaves, rhizomes, peels, and seeds of a plant.

[0054] Preferably, the surfactant is selected from one or more of anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants.

[0055] Preferably, the natural plant is selected from the group consisting of Ginkgoaceae, Pinaceae, Taxaceae, Cupressaceae, Podocarpaceae, Taxaceae, Magnoliaceae, Annonaceae, Lauraceae, Piperaceae, Peduncleaceae, Juglandaceae, Ranunculaceae, Nymphaeaceae, Eucommiaceae, Betulaceae, Cactaceae, Portulacaceae, Caryophyllaceae, Theaceae, Hypericaceae, Sterculiaceae, Kapokaceae, Malvaceae, Cucurbitaceae, Cruciferae, Diospyros, Ericaceae, Rosaceae, Mimosa, Oleraceae, Fabaceae, Elaeagnaceae, Daphne One or more plants from the families and genera such as Myrtaceae, Onagraceae, Santalum, Aquifoliaceae, Vitaceae, Linaceae, Sapindaceae, Oleaceae, Anacardiaceae, Rutaceae, Araliaceae, Apiaceae, Gentianaceae, Apocynaceae, Solanaceae, Asclepiadaceae, Verbenaceae, Lamiaceae, Oleaceae, Scrophulariaceae, Campanulaceae, Rubiaceae, Caprifoliaceae, Patriniaceae, Asteraceae, Palmaceae, Araceae, Cyperaceae, Poaceae, Zingiberaceae, Liliaceae, Terrestraceae, Iridaceae, and Orchidaceae.

[0056] Preferably, the extraction adopts one or more of solvent method, microwave, ultrasound, enzyme method, fermentation method and supercritical fluid method.

[0057] The persulfate is one or more of potassium persulfate and sodium persulfate.

[0058] In some specific embodiments, the method for preparing the natural plant polyphenol compound capable of removing organic pollutants of the present invention comprises the following steps:

[0059] Preparation:

[0060] Prepare Ginkgo, Pinaceae, Taxaceae, Cupressaceae, Podocarpaceae, Taxaceae, Magnoliaceae, Annonaceae, Lauraceae, Piperaceae, Peduncleaceae, Juglandaceae, Ranunculaceae, Nymphaeaceae, Eucommia, Betulaceae, Cactaceae, Portulacaceae, Caryophyllaceae, Theaceae, Hypericaceae, Sterculiaceae, Kapokaceae, Malvaceae, Cucurbitaceae, Cruciferae, Diospyros, Ericaceae, Rosaceae, Mimosa, Oleraceae, Fabaceae, Elaeagnaceae, Thymelaeaceae, Myrtaceae, Onagraceae, One or more plants from the families and genera of Santalum, Aquifoliaceae, Vitaceae, Linaceae, Sapindaceae, Oleaceae, Anacardiaceae, Rutaceae, Araliaceae, Apiaceae, Gentianaceae, Apocynaceae, Solanaceae, Asclepiadaceae, Verbenaceae, Lamiaceae, Oleaceae, Scrophulariaceae, Campanulaceae, Rubiaceae, Caprifoliaceae, Patriniaceae, Asteraceae, Palmaceae, Araceae, Cyperaceae, Poaceae, Zingiberaceae, Liliaceae, Terrestris, Iridaceae, Orchidaceae, etc., are subjected to pre-treatment operations such as washing and drying;

[0061] Material crushing:

[0062] The dried plant material is crushed to obtain fine powder for later use;

[0063] extract:

[0064] The obtained plant powder is extracted by one or more of solvent method, microwave, ultrasonic, enzyme method, fermentation method and supercritical fluid method to obtain plant extract, and the total phenol content, total flavonoid content, DPPH scavenging rate (antioxidant performance) and other data of the plant extract can be further measured;

[0065] Compounding:

[0066] The natural plant polyphenol activation complex is obtained by combining plant extracts with excellent total phenol content, total flavonoid content and DPPH scavenging rate (antioxidant performance) data, and compounding them with surfactants, persulfate and solvents such as water.

[0067] The complex can be directly sprayed into the air after being atomized to effectively remove common organic pollutants in life, such as formaldehyde, benzene, toluene, xylene, etc.

[0068] The technical solution of the present invention is further demonstrated in combination with the following examples. In order to demonstrate the removal effect of the ternary composite system of the present invention on organic pollutants, comparative examples 1 and 2 are added at the same time:

[0069] Example 1

[0070] The composite was prepared by the following process:

[0071] 1. Mechanically crush the dried leaves of green tea, Japanese cypress, hops, persimmon leaves and rosemary, and screen the particles of 30-80 mesh to obtain green tea powder, Japanese cypress powder, hops powder, persimmon leaf powder and rosemary powder;

[0072] 2. Mix green tea powder, Japanese cypress powder, hop pollen, persimmon leaf powder, and rosemary powder in a ratio of 1:1:1:1, and soak them in 70% ethanol solution for 30 minutes to fully wet the materials to obtain an impregnation solution containing plant powder;

[0073] 3. Using a 40kHz ultrasonic two-dimensional material stripper to ultrasonically treat the impregnation liquid to assist extraction, the ultrasonic treatment time is 10 minutes, and a treated impregnation liquid is obtained;

[0074] 4. The treated impregnation liquid was stirred using a stirring device at a stirring speed of 800 rpm for 60 min to obtain a crude extract containing plant powder;

[0075] 5. The crude extract was soaked for another 24 hours, and then filtered with a 0.45 μm organic filter membrane to obtain a mixed plant extract.

[0076] The mixed plant extract, potassium persulfate, polyoxyethylene sorbitan monolaurate, phenoxyethanol and water are stirred and mixed according to the following mass percentages:

[0077] Mixed plant extract: 5%;

[0078] Potassium persulfate: 0.1%

[0079] Polyoxyethylene sorbitan monolaurate: 0.5%

[0080] Phenoxyethanol: 1%

[0081] Residual water;

[0082] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the stirring was carried out at 55° C. for 60 minutes to obtain a natural plant polyphenol activated complex having the function of removing organic pollutants.

[0083] Example 2

[0084] The composite was prepared by the following process:

[0085] 1. Mechanically crush the dried materials of black tea, wormwood leaf and rhodiola rosea, and screen the particles of 30-80 mesh to obtain black tea powder, wormwood leaf powder and rhodiola rosea powder;

[0086] 2. Mix black tea powder, wormwood powder and rhodiola rosea powder in a ratio of 2:2:1, soak in water for 30 minutes to fully wet the materials, and obtain an infusion containing plant powder;

[0087] 3. The impregnation liquid was stirred using a stirring device at a stirring speed of 800 rpm for 60 min to obtain a crude extract containing plant powder;

[0088] 4. Put the crude extract into a 121°C autoclave for sterilization. After cooling, add rice wine yeast and culture it in a shaker at 37°C at 100 rpm. Sterilize the fermentation liquid, centrifuge it, take the supernatant, and obtain a fermentation mixed extract of black tea, wormwood leaf, and rhodiola rosea.

[0089] The fermentation mixed extract was stirred and mixed with sodium persulfate, sodium lauryl sulfate, phenoxyethanol and water in the following mass percentages:

[0090] Fermentation mixed extract: 6%;

[0091] Sodium persulfate: 0.05%

[0092] Sodium lauryl sulfate: 1%

[0093] Phenoxyethanol: 1%

[0094] Residual water;

[0095] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the stirring was carried out at 55° C. for 60 minutes to obtain a natural plant polyphenol activated complex having the function of removing organic pollutants.

[0096] Example 3

[0097] The composite was prepared by the following process:

[0098] 1. Mechanically crush the dried leaves of Masson pine, Bambusa longituba, Sabina juniper and green tea, and screen the particles of 30-80 mesh to obtain Masson pine powder, Bambusa longituba powder, Sabina juniper powder and green tea powder;

[0099] 2. Mix the Masson Pine powder, the Light Bamboo Leaf powder, the Sabina powder and the Green Tea powder in a ratio of 1:1:1:1, and soak them in a 70% ethanol solution for 30 minutes to fully infiltrate the materials to obtain an impregnation solution containing plant powders;

[0100] 3. Using a 40kHz ultrasonic two-dimensional material stripper to ultrasonically treat the impregnation liquid to assist extraction, the treatment time is 10 minutes, and a treated impregnation liquid is obtained;

[0101] 6. The treated impregnation liquid was stirred using a stirring device at a stirring speed of 600 rpm for 60 min to obtain a crude extract containing plant powder;

[0102] 4. The crude extract was soaked for another 24 hours, and then filtered with a 0.45 μm organic filter membrane to obtain a mixed plant extract.

[0103] The obtained mixed plant extract was stirred and mixed with potassium persulfate, polyoxyethylene sorbitan monolaurate, phenoxyethanol and water according to the following mass percentages:

[0104] Mixed plant extract: 5%;

[0105] Potassium persulfate: 0.05%

[0106] Polyoxyethylene sorbitan monooleate: 0.3%

[0107] Phenoxyethanol: 1%

[0108] Residual water;

[0109] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the stirring was carried out at 55° C. for 60 minutes to obtain a natural plant polyphenol activated complex having the function of removing organic pollutants.

[0110] Example 4

[0111] The composite was prepared by the following process:

[0112] 1. Mechanically crush the dried materials of Sophora flavescens, sweet orange peel, Centella asiatica and Patchouli, and screen the particles of 30-80 mesh to obtain Sophora flavescens powder, sweet orange peel powder, Centella asiatica powder and Patchouli powder;

[0113] 2. Mix the Sophora flavescens powder, the sweet orange peel powder, the Centella asiatica powder and the Patchouli powder in a ratio of 1:2:1:1, and soak them in water for 30 minutes to fully wet the materials to obtain an impregnation liquid containing plant powders;

[0114] 3. Use microwave equipment to perform microwave-assisted extraction on the obtained impregnation liquid, the microwave treatment time is 10 minutes, and the treated impregnation liquid is obtained;

[0115] 4. The treated impregnation liquid was stirred using a stirring device at a stirring speed of 800 rpm for 60 min to obtain a crude extract containing plant powder;

[0116] 5. The crude extract was soaked for another 24 hours, and then filtered with a 0.45 μm water filter membrane to obtain a mixed plant extract.

[0117] The mixed plant extract, potassium persulfate, polyoxyethylene sorbitan monooleate, phenoxyethanol and water are stirred and mixed according to the following mass percentages: the raw materials in the composite meet the following mass percentage ratios:

[0118] Mixed plant extract: 4.5%

[0119] Potassium persulfate: 0.08%

[0120] Polyoxyethylene sorbitan monooleate: 0.8%

[0121] Phenoxyethanol: 1%

[0122] Remaining amount of water.

[0123] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the stirring was carried out at 55° C. for 60 minutes to obtain a natural plant polyphenol activated complex having the function of removing organic pollutants.

[0124] Example 5

[0125] The composite was prepared by the following process:

[0126] 1. Mechanically crush the dried materials of mint, marigold, lemongrass and thyme, and screen the particles of 30-80 mesh to obtain mint powder, marigold powder, lemongrass powder and thyme powder;

[0127] 2. Mix mint powder, marigold powder, lemongrass powder and thyme powder in a ratio of 1:1:1:1, soak in water for 30 minutes to fully soak the materials, and obtain an impregnation liquid containing plant powder;

[0128] 3. Using a 40kHz ultrasonic two-dimensional material stripper to ultrasonically treat the impregnation liquid to assist extraction, the treatment time is 10 minutes, and a treated impregnation liquid is obtained;

[0129] 4. The treated impregnation liquid was stirred using a stirring device at a stirring speed of 500 rpm for 60 min to obtain a crude extract containing plant powder;

[0130] 5. The crude extract was soaked for another 24 hours, and then filtered with a 0.45 μm water filter membrane to obtain a mixed plant extract.

[0131] The mixed plant extract, potassium persulfate, cocamidopropyl betaine, phenoxyethanol and water are stirred and mixed according to the following mass percentages: the raw materials in the composite meet the following mass percentage ratios:

[0132] Mixed plant extract: 6%

[0133] Potassium persulfate: 0.15%

[0134] Cocamidopropyl Betaine: 1%

[0135] Phenoxyethanol: 1%

[0136] Residual water;

[0137] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the stirring was carried out at 55° C. for 60 minutes to obtain a natural plant polyphenol activated complex having the function of removing organic pollutants.

[0138] Comparative Example 1

[0139] The comparative composites were prepared by the following process:

[0140] 1. Mechanically crush the dried leaves of green tea, Japanese cypress, hops, persimmon leaves and rosemary, and screen the particles of 30-80 mesh to obtain green tea powder, Japanese cypress powder, hops powder, persimmon leaf powder and rosemary powder;

[0141] 2. Mix green tea powder, Japanese cypress powder, hop pollen, persimmon leaf powder, and rosemary powder in a ratio of 1:1:1:1, and soak them in 70% ethanol solution for 30 minutes to fully wet the materials to obtain an impregnation solution containing plant powder;

[0142] 3. Using a 40kHz ultrasonic two-dimensional material stripper to ultrasonically treat the impregnation liquid to assist extraction, the treatment time is 10 minutes, and a treated impregnation liquid is obtained;

[0143] 4. The treated impregnation liquid was stirred using a stirring device at a stirring speed of 800 rpm for 60 min to obtain a crude extract;

[0144] 5. The crude extract was soaked for another 24 hours, and then filtered with a 0.45 μm organic filter membrane to obtain a mixed plant extract.

[0145] The mixed plant extract, phenoxyethanol and water are stirred and mixed according to the following mass percentages:

[0146] Mixed plant extract: 5%;

[0147] Phenoxyethanol: 1%

[0148] Residual water;

[0149] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the mixture was stirred at 55° C. for 60 min to obtain a comparative composite.

[0150] Comparative Example 2

[0151] The comparative composites were prepared by the following process:

[0152] 1. Mechanically crush the dried materials of black tea, wormwood leaf and rhodiola rosea, and select the particles of 30-80 mesh, which are recorded as black tea powder, wormwood leaf powder and rhodiola rosea powder;

[0153] 2. Mix black tea powder, wormwood powder and rhodiola rosea powder in a ratio of 2:2:1 and soak in water for 30 minutes to fully soak the materials;

[0154] 3. The impregnation liquid was stirred using a stirring device at a stirring speed of 800 rpm for 60 min to obtain a crude impregnation liquid containing plant powder;

[0155] 4. Put the crude infusion liquid into a 121°C autoclave for sterilization. After cooling, add rice wine yeast and culture it in a shaker at 37°C at 100 rpm. Sterilize the fermentation liquid, centrifuge it, take the supernatant, and obtain a fermentation mixed extract of black tea, wormwood leaf, and rhodiola rosea.

[0156] The fermented mixed plant extract, phenoxyethanol and water are stirred and mixed according to the following mass percentages:

[0157] Fermented mixed plant extract: 6%;

[0158] Phenoxyethanol: 1%

[0159] Residual water;

[0160] The above ingredients were mixed, the stirring speed was controlled to be 500 rpm, and the mixture was stirred at 55° C. for 60 min to obtain a comparative composite.

[0161] The following tests were performed on Examples 1-5 and Comparative Examples 1-2:

[0162] 1. Test of total phenol content in mixed plant extracts

[0163] Under alkaline conditions, the phenolic hydroxyl groups in phenolic substances can reduce the tungstomolybdic acid in the Folin-phenol reagent to form a blue complex. The depth of the color is positively correlated with the content of polyphenols. Therefore, the Folin-Cioealteu colorimetric method can be used to determine the polyphenol content in the sample. The process includes:

[0164] (1) Drawing of standard curve

[0165] Accurately weigh 0.1000g of gallic acid standard, dissolve it in distilled water to 100ml, accurately pipette 0, 0.10, 0.20, 0.30, 0.40, 0.50ml of 1.0mg / mL gallic acid standard solution into a 100ml volumetric flask, add 60ml of deionized water, then add 1.00ml of Folin phenol reagent and shake well, let it stand for 2-3min, add 10% Na 2 CO 3 5.00 ml of the solution was made up to volume with deionized water and placed in a constant temperature water bath at 25°C for 120 min. The absorbance was measured at 765 nm and a standard curve was drawn with the concentration of the standard solution as the horizontal axis and the absorbance as the vertical axis.

[0166] (2) Determination of total phenol content in mixed extract

[0167] Accurately pipette 0.10 ml of the mixed plant extract prepared in Comparative Examples 1-2 and Examples 1-5, add 60 ml of deionized water, then add 1.00 ml of Folin phenol reagent, shake well, let stand for 2-3 minutes, then add 5.00 ml of 10% Na 2 CO 3 Solution, dilute to 100 ml with deionized water, place in a 25°C constant temperature water bath for 120 min, measure absorbance at 765 nm, calculate concentration according to the standard curve, and substitute into the formula to calculate total phenol content:

[0168]

[0169] Where: ω is the total phenol content (mg / g); C is the mass concentration of gallic acid (μg / mL); V is the volume of the extract (mL); N is the dilution factor; M is the sample size (g).

[0170] The mixed plant extracts prepared in Examples 1 to 5 and Comparative Examples 1 to 2 were respectively taken to test the total phenol content at the same concentration, and the following results were obtained:

[0171] sample Total phenol content (mg / g) Comparative Example 1 4.9457 Comparative Example 2 14.5109 Example 1 4.9457 Example 2 14.5109 Example 3 23.0435 Example 4 4.7391 Example 5 13.8587

[0172] 2. Test of total flavonoid content in mixed plant extracts

[0173] Flavonoids are a general term for a class of natural compounds with a benzopyran ring structure. They generally have a carbonyl group at position 4 and are yellow in color. The 3-hydroxyl, 4-hydroxyl or 5-hydroxyl, 4-carbonyl or ortho-phenolic hydroxyl groups of flavonoids react with aluminum salts to form red complexes under alkaline conditions.

[0174] In the present invention, after purifying the flavonoid compounds in the sample, the absorbance is measured at a wavelength of 510 nm by spectrophotometry, and compared with the rutin standard product to perform quantitative determination of the total flavonoids in the sample, including:

[0175] Using rutin as the standard, the spectrophotometric NaNO 2 -Al(NO) 3 -NaOH colorimetric determination, weigh 0.0250g of rutin standard dried to constant weight, dilute to 100mL volumetric flask with 80% ethanol, and obtain a rutin standard solution with a concentration of 0.250g / L. Take 0.0, 0.5, 1.0, 2.0, 3.0, 4.0, 5.0mL of rutin standard solution respectively into a 25mL brown volumetric flask, dilute to 12.5mL with 80% ethanol solution, add 0.75mL of 5% sodium nitrite solution, shake well, let stand for 6min, add 0.75mL of 10% aluminum nitrate solution, shake well, let stand for 6min, then add 3.75mL of 4% sodium hydroxide solution, dilute to 25mL with 80% ethanol solution, shake well, let stand for 15min, use the reagent blank as a reference, measure the absorbance value at a wavelength of 510nm, draw a standard curve, and perform linear regression.

[0176] The mixed plant extracts prepared in Comparative Examples 1 to 2 and Examples 1 to 5 were respectively taken to test the total flavonoid content at the same concentration, and the following results were obtained:

[0177] sample Total flavonoids content (mg / g) Comparative Example 1 52.9306 Comparative Example 2 50.2416 Example 1 52.9306 Example 2 50.2416 Example 3 63.5347 Example 4 46.7114 Example 5 49.7718

[0178] 3. DPPH scavenging rate of mixed plant extracts (antioxidant properties)

[0179] Take several centrifuge tubes and divide them into experimental group, control group and blank group. Add 2 mL of the sample of the embodiment to the centrifuge tubes of the experimental group and the control group, add 2 mL of water to the centrifuge tubes of the control group and the blank group, add 2 mL of 0.08 g / mL DPPH solution to the centrifuge tubes of the experimental group and the blank group, shake well, and measure the absorbance at 517 nm with anhydrous ethanol as a reference after standing for 30 minutes. Calculate the DPPH clearance rate according to the following formula:

[0180]

[0181] Where A1 is the absorbance of the experimental group, A2 is the absorbance of the control group, and A3 is the absorbance of the blank group.

[0182] The mixed plant extracts prepared in Comparative Examples 1 to 2 and Examples 1 to 5 were respectively taken as experimental groups to test the DPPH removal rate, and the following results were obtained:

[0183] sample DPPH clearance Comparative Example 1 63.3％ Comparative Example 2 56.2％ Example 1 63.3％ Example 2 56.2％ Example 3 89.6％ Example 4 67.9％ Example 5 72.7％

[0184] 4. Organic pollutant removal rate of the complex

[0185] Referring to QB / T 2761-2006 "Method for Determining the Purification Effect of Indoor Air Purification Products", the formaldehyde removal rate of the composites prepared in Comparative Examples 1 to 2 and Examples 1 to 5 was tested, and the following results were obtained:

[0186] sample Formaldehyde removal rate Comparative Example 1 56.2％ Comparative Example 2 52.9％ Example 1 78.9％ Example 2 72.5％ Example 3 90.1％ Example 4 80.9％ Example 5 86.2％

[0187] Referring to QB / T 2761-2006 "Method for Determining the Purification Effect of Indoor Air Purification Products", the removal rate of the composites prepared in Comparative Examples 1 to 2 and Examples 1 to 5 on a mixture of benzene, toluene and xylene was tested, and the following results were obtained:

[0188] sample Benzene, toluene and xylene removal rates Comparative Example 1 57.6％ Comparative Example 2 63.8％ Example 1 87.1％ Example 2 83.8％ Example 3 95.8％ Example 4 86.0％ Example 5 90.3％

[0189] It can be seen from the above tests that the mixed plant extracts of Comparative Example 1 and Example 1 have the same total phenol content, total flavonoid content and DPPH scavenging rate (antioxidant performance), and the mixed plant extracts of Comparative Example 2 and Example 2 have the same total phenol content, total flavonoid content and DPPH scavenging rate (antioxidant performance), but the comparative composites obtained in Comparative Examples 1 and 2 have much lower scavenging rates for formaldehyde, benzene, toluene and xylene than the natural plant polyphenol activated composites obtained in Examples 1 and 2, indicating that the ternary composite system of the present invention including polyphenol compounds, surfactants and persulfate has a synergistic effect with each other and is more effective in removing organic pollutants.

[0190] The above tests also show that the mixed plant extract of Example 3 has higher total phenol and total flavonoid contents, better DPPH removal rate (antioxidant performance), and better formaldehyde, benzene, toluene, and xylene mixture removal effects. The samples of Example 3 were sent to a third-party testing agency for related performance testing, and the test results are shown in the attached Figure 1 , 2 As shown, the formaldehyde removal rate of this product is 92.2%; 24 hours, 0.0707mg / m 3 At a sample concentration of , its removal rate for TVOC (mixture of benzene, toluene and xylene) is 99.5%

[0191] (GB / T2761-2006 test method).

[0192] The above embodiments are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A natural plant polyphenol compound capable of removing organic pollutants, characterized in that: It includes: Natural plant extracts containing active ingredients, surfactants and persulfates, wherein the surfactant is selected from one or more of anionic surfactants, cationic surfactants, amphoteric surfactants and non-ionic surfactants; the active ingredients include polyphenol active ingredients or polyphenol active ingredients and flavonoid active ingredients.

2. The natural plant polyphenol compound according to claim 1, characterized in that: The active ingredients include flavonoid plant polyphenols.

3. The natural plant polyphenol compound according to claim 1, characterized in that: The natural plant extract containing active ingredients is extracted from natural plants, and the natural plants are selected from the group consisting of Ginkgoaceae, Pinaceae, Taxaceae, Cupressaceae, Podocarpaceae, Taxaceae, Magnoliaceae, Annonaceae, Lauraceae, Piperaceae, Pedunculateaceae, Juglandaceae, Ranunculaceae, Nymphaeaceae, Eucommiaceae, Betulaceae, Cactaceae, Portulacaceae, Caryophyllaceae, Theaceae, Hypericaceae, Sterculiaceae, Kapokaceae, Malvaceae, Cucurbitaceae, Cruciferae, Diospyros, Ericaceae, Rosaceae, Mimosaceae, Caesalpiniaceae, Butterfly One or more of the following plants: Anemoneaceae, Elaeagnaceae, Thymelaeaceae, Myrtaceae, Onagraceae, Santalum, Aquifoliaceae, Vitaceae, Linaceae, Sapindaceae, Oleaceae, Anacardiaceae, Rutaceae, Araliaceae, Apiaceae, Gentianaceae, Apocynaceae, Solanaceae, Asclepiadaceae, Verbenaceae, Lamiaceae, Oleaceae, Scrophulariaceae, Campanulaceae, Rubiaceae, Caprifoliaceae, Patriniaceae, Asteraceae, Palmaceae, Araceae, Cyperaceae, Poaceae, Zingiberaceae, Liliaceae, Terrestraceae, Iridaceae, and Orchidaceae.

4. The natural plant polyphenol compound according to claim 1, characterized in that: in, The natural plant extract containing active ingredients is extracted from natural plants, and the natural plants are selected from one or more of green tea, black tea, oolong tea, Pu'er tea, white tea, Japanese cypress, hops, persimmon leaves, rosemary, wormwood, rhodiola rosea, masson pine, light bamboo leaves, juniper, juniper, oriental cypress, sophora flavescens, sweet orange peel, Centella asiatica, patchouli, mint, marigold, citronella, and thyme; and / or, the surfactant is selected from one or more of polyoxyethylene sorbitan monolaurate, sodium lauryl sulfate, polyoxyethylene sorbitan monooleate, and cocamidopropyl betaine; and / or, the persulfate is selected from potassium persulfate and / or sodium persulfate.

5. The natural plant polyphenol compound according to claim 1, characterized in that: The natural plant extract containing active ingredients is extracted from natural plants, and the natural plants include one or more of the following compositions: green tea, Japanese cypress, hops, persimmon leaves and rosemary; black tea, wormwood leaves and rhodiola rosea; masson pine, bamboo leaves, juniper and green tea; sophora flavescens, sweet orange peel, Centella asiatica, and patchouli; mint, marigold, lemongrass and thyme.

6. The natural plant polyphenol compound according to claim 1, characterized in that: in, The total phenol content of the natural plant extract containing the active ingredient is 1 to 30 mg / g; and / or the total flavonoid content of the natural plant extract containing the active ingredient is 30 to 80 mg / g; and / or the DPPH scavenging rate of the natural plant extract containing the active ingredient is 50 to 100%; and / or the mass ratio of the natural plant extract containing the active ingredient to the surfactant and the persulfate is: 1 to 6: 0.1 to 1.5: 0.01 to 0.

2.

7. The natural plant polyphenol compound according to claim 1, characterized in that: The invention also comprises phenoxyethanol in a mass percentage of 0.5 to 1%.

8. The method for preparing the natural plant polyphenol compound according to any one of claims 1 to 6, characterized in that: It includes: Mixing and extracting the powders of the natural plants in the complex to obtain a mixed plant extract, i.e., the natural plant extract containing active ingredients; Mixing the mixed plant extract, the surfactant and the persulfate with water to obtain the composite; Wherein, the extraction adopts one or more of solvent extraction, microwave extraction, ultrasonic extraction, enzyme method, microbial fermentation method and supercritical fluid extraction method.

9. The preparation method according to claim 8, characterized in that: Specifically include: The natural plants are crushed respectively to obtain powders of the natural plants; Mix the powders of various natural plants and soak them in 70% ethanol solution to obtain an impregnation liquid containing the plant powders; Using ultrasound and / or microwaves to treat the impregnation liquid containing the plant powder to obtain a treated impregnation liquid; Mechanically stirring the treated impregnation liquid to obtain a crude extract containing plant powder; The crude extract containing the plant powder is allowed to stand and soak for a long time, and then filtered using an organic filter membrane to obtain the mixed plant extract; Mixing the mixed plant extract, the surfactant and the persulfate with water to obtain the composite; or specifically including: The natural plants are crushed respectively to obtain powders of the natural plants; Mixing the powders of various natural plants and soaking them in water to obtain an infusion containing the plant powders; Mechanically stirring the treated impregnation liquid to obtain a crude extract containing plant powder; Fermenting the crude extract containing the plant powder to obtain a fermented mixed plant extract; Mixing the fermented mixed plant extract, the surfactant and the persulfate with water to obtain the composite; The fermentation process comprises: sterilizing the crude extract containing plant powder, adding rice wine yeast to the sterilized crude extract for cultivation, sterilizing the fermentation liquid obtained by cultivation, and then performing solid-liquid separation, and the obtained liquid is the fermented mixed plant extract.

10. The natural plant polyphenol compound according to any one of claims 1 to 6 or the preparation method according to claim 8 or 9, characterized in that: The complex contains: 1-6 wt % of the natural plant extract containing active ingredients, 0.1-1.5 wt % of the surfactant, 0.01-0.2 wt % of the persulfate, 0.5-1 wt % of phenoxyethanol and the balance of water.

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