CN106362562A - Chinese herbal medicine formaldehyde scavenger and preparation method thereof - Google Patents

Chinese herbal medicine formaldehyde scavenger and preparation method thereof Download PDF

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Publication number
CN106362562A
CN106362562A CN201610781222.0A CN201610781222A CN106362562A CN 106362562 A CN106362562 A CN 106362562A CN 201610781222 A CN201610781222 A CN 201610781222A CN 106362562 A CN106362562 A CN 106362562A
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herbal medicine
chinese herbal
herba
formaldehyde scavenger
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张申元
林凯
赵海飞
潘建峰
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SUZHOU HUATAI AIR FILTER CO Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/72Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/40Liliopsida [monocotyledons]
    • A01N65/42Aloeaceae [Aloe family] or Liliaceae [Lily family], e.g. aloe, veratrum, onion, garlic or chives
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20Method-related aspects
    • A61L2209/21Use of chemical compounds for treating air or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2279/00Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/65Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for the sterilisation of air

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
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  • Biotechnology (AREA)
  • Agronomy & Crop Science (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

The invention discloses a Chinese herbal medicine formaldehyde scavenger and a preparation method thereof. The Chinese herbal medicine formaldehyde scavenger contains the following raw materials in parts by mass: 5-10 parts of fructus forsythiae, 5-10 parts of folium artemisiae argyi, 6-15 parts of cassia seeds, 10-15 parts of lonicera japonica, 5-15 parts of radix isatidis, 10-20 parts of herba artemisiae, 5-10 parts of herba houttuyniae, 3-6 parts of cassia barks, 3-10 parts of dried tangerine peels, 1-5 parts of radix sophorae subporstratae, 5-10 parts of aloe vera, 5-10 parts of taraxacum mongolicum, 5-10 parts of folium isatidis and 5-10 parts of mint leaves. According to the Chinese herbal medicine formaldehyde scavenger and the preparation method thereof, the production process is simple, the preparation cost is low, the produced Chinese herbal medicine formaldehyde scavenger can be used for remarkably lowering the concentration of formaldehyde in indoor air, and the removal efficiency reaches 90% or more; the durability is good, meanwhile, a good bactericidal effect can be achieved, and the rate of killing of staphylococcus aureus, Escherichia coli, black Bacillus subtilis variants and Candida albicans is 80% or more. Furthermore, the Chinese herbal medicine formaldehyde scavenger is non-toxic, nonirritant and readily-degradable.

Description

A kind of Chinese herbal medicine formaldehyde scavenger and preparation method thereof
Technical field
The present invention relates to air purification field, more particularly, to a kind of Chinese herbal medicine formaldehyde scavenger and preparation method thereof.
Background technology
Common indoor pollutant has the escaping gases such as formaldehyde, toluene, solid particulate matter and microorgranic contaminant Deng.Indoor Air Microorganisms are mainly derived from following two aspects: one is the spittle, people deeply breathing, speak, sneeze when, meeting The microorganism parasitizing human mouth, throat is spread in the air in the form of the spittle;Two is scurf and the dust of people, according to Measuring and calculating, on each scurf, average bacteria containing amount reaches 40,000, and with people's activity indoors, scurf and dust can be suspended in the air When having patient in contaminated air, particularly family, corresponding pathogen can be found in atmosphere, Medical researchers are pointed out, this A little pollutant have a great threat to health, especially escaping gas, long-term inhale people can to the respiratory system of human body, Cardiovascular system and nervous system have serious harm, moreover, therefore solve the problems, such as that indoor environment is just particularly important, Main task is to remove the harmful gass such as indoor formaldehyde, toluene and removes microorganism to indoor sterilization, the air commonly used at present Sterilization method mainly adopts the disinfectant of chemical composition, the such as chemistry such as peracetic acid, lactic acid, hydrogen peroxide, formaldehyde, glutaraldehyde The physical method such as method and ultraviolet irradiation, smelly chlorine generator.These methods can kill pathogenic microorganism, and effect is quick, Valid density is low, obtains preferable effect.But respectively there is certain defect, as toxic, zest, metal protection, persistently imitate Really poor;Many itself constitutes pollutant again, affects health, uncomfortable tenant in common's environment to some extent;During sterilization everyone Member must leave the theatre, and operating system will have safeguard procedures;After sterilization, abnormal flavour can not eliminate quickly, and life-time service can have accumulation to human body Danger of poisoning etc..
Chinese medicine not only can treat human body diseases, and many TCM in Vitros have stronger antibiosis and antiviral functions again, to air Sterilization also has extensive use value, particularly under the conditions of someone, can reach safe and effective air sterillization, therefore get over More to be subject to people's attention.A kind of therefore air purifying preparation and its preparation side that Chinese herbal medicine is applied to formaldehyde removing of demand Method.
Content of the invention
Goal of the invention: the present invention is to solve the above problems, there is provided a kind of Chinese herbal medicine formaldehyde scavenger and preparation method thereof.
Technical scheme: a kind of Chinese herbal medicine formaldehyde scavenger, the following raw material including measuring in parts by weight: Fructus Forsythiae 5-10 Part, Folium Artemisiae Argyi 5-10 part, Semen Cassiae 6-15 part, Flos Lonicerae 10-15 part, Radix Isatidis 5-15 part, Herba Artemisiae Scopariae 10-20 part, Herba Houttuyniae 5-10 Part, Cortex cinnamomi japonici (Ramulus Cinnamomi) 3-6 part, Pericarpium Citri Reticulatae 3-10 part, Radix Sophorae Tonkinensiss 1-5 part, Aloe 5-10 part, Herba Taraxaci 5-10 part, Folium Isatidiss 5-10 part, Herba Menthae Leaf 5-10 part.
As a preferred embodiment of the present invention, 8 parts of Fructus Forsythiae, 6 parts of Folium Artemisiae Argyi, 10 parts of Semen Cassiae, 12 parts of Flos Lonicerae, Radix Isatidis 9 parts, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, 6 parts of Aloe, 8 parts of Herba Taraxaci, 6 parts of Folium Isatidiss, 8 parts of mentha leave.
A kind of preparation method of Chinese herbal medicine formaldehyde scavenger, comprises the following steps:
Step 1, weighs the following raw material of amount according to the mass fraction: Fructus Forsythiae 5-10 part, Folium Artemisiae Argyi 5-10 part, Semen Cassiae 6-15 Part, Flos Lonicerae 10-15 part, Radix Isatidis 5-15 part, Herba Artemisiae Scopariae 10-20 part, Herba Houttuyniae 5-10 part, Cortex cinnamomi japonici (Ramulus Cinnamomi) 3-6 part, Pericarpium Citri Reticulatae 3-10 part, Radix Sophorae Tonkinensiss 1-5 part, Aloe 5-10 part, Herba Taraxaci 5-10 part, Folium Isatidiss 5-10 part, mentha leave 5-10 part;
Step 2, above-mentioned raw materials is put into and carries out steaming and decocting in the water of 5-10 times of quality, and the temperature of steaming and decocting is 65-85 DEG C, the time For 30-60min, then filtered, the raw material after obtaining filtrate and filtering;
Step 3, is placed through ultrasonic grinder in the raw material to after filter and is crushed to below 20 mesh, be subsequently adding second Alcohol, more than 80 DEG C of reflux, extract, 10h, obtains extracting solution;
Step 4, by extracting solution in centrifuge with the centrifugation 15min of 3000r/min, then takes the supernatant, decompression Distillation removes ethanol, is subsequently adding the filtrate in step 2, and two kinds of liquid are pressed 1:1 mixing, then concentrated, prepared Chinese herbal medicine Formaldehyde scavenger.
It is 8 parts of Fructus Forsythiae as the raw material in a preferred embodiment of the present invention, step 1,6 parts of Folium Artemisiae Argyi, 10 parts of Semen Cassiae, gold 12 parts of Flos Lonicerae, 9 parts of Radix Isatidis, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, 6 parts of Aloe, Pu Gong 8 parts of English, 6 parts of Folium Isatidiss, 8 parts of mentha leave.
Beneficial effect: the present invention compared with prior art, has an advantage in that, simple production process of the present invention, manufacturing cost Low, the Chinese herbal medicine formaldehyde scavenger of production can make Formaldehyde Concentration of Indoor Air significantly reduce, eliminate efficiency up to 90% with On, and persistency is good, can play good bactericidal effect simultaneously, black to staphylococcus aureuses, escherichia coli, bacillus subtilis Complexion changed kind, Candida albicans eradicative rate more than 80%.And the present invention is nontoxic, non-stimulated, degradable.
Specific embodiment
With reference to specific embodiment, it is further elucidated with the present invention.
Embodiment 1
A kind of Chinese herbal medicine formaldehyde scavenger, the following raw material including measuring in parts by weight: 5 parts of Fructus Forsythiae, 5 parts of Folium Artemisiae Argyi, certainly 6 parts of pine torch, 10 parts of Flos Lonicerae, 5 parts of Radix Isatidis, 10 parts of Herba Artemisiae Scopariae, 5 parts of Herba Houttuyniae, 3 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 3 parts of Pericarpium Citri Reticulatae, 1 part of Radix Sophorae Tonkinensiss, reed 5 parts of luxuriant growth, 5 parts of Herba Taraxaci, 5 parts of Folium Isatidiss, 5 parts of mentha leave.
The preparation method of above-mentioned natural plant type formaldehyde scavenger, comprises the following steps:
Step 1, weighs the following raw material of amount according to the mass fraction: 5 parts of Fructus Forsythiae, 5 parts of Folium Artemisiae Argyi, 6 parts of Semen Cassiae, Flos Lonicerae 10 Part, 5 parts of Radix Isatidis, 10 parts of Herba Artemisiae Scopariae, 5 parts of Herba Houttuyniae, 3 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 3 parts of Pericarpium Citri Reticulatae, 1 part of Radix Sophorae Tonkinensiss, 5 parts of Aloe, 5 parts of Herba Taraxaci, 5 parts of Folium Isatidiss, 5 parts of mentha leave;
Step 2, above-mentioned raw materials is put into and carries out steaming and decocting in the water of 5-10 times of quality, and the temperature of steaming and decocting is 65-85 DEG C, the time For 30-60min, then filtered, the raw material after obtaining filtrate and filtering;
Step 3, is placed through ultrasonic grinder in the raw material to after filter and is crushed to below 20 mesh, be subsequently adding second Alcohol, more than 80 DEG C of reflux, extract, 10h, obtains extracting solution;
Step 4, by extracting solution in centrifuge with the centrifugation 15min of 3000r/min, then takes the supernatant, decompression Distillation removes ethanol, is subsequently adding the filtrate in step 2, and two kinds of liquid are pressed 1:1 mixing, then concentrated, prepared Chinese herbal medicine Formaldehyde scavenger.
Embodiment 2
A kind of Chinese herbal medicine formaldehyde scavenger, the following raw material including measuring in parts by weight: 10 parts of Fructus Forsythiae, 10 parts of Folium Artemisiae Argyi, 15 parts of Semen Cassiae, 15 parts of Flos Lonicerae, 15 parts of Radix Isatidis, 20 parts of Herba Artemisiae Scopariae, 10 parts of Herba Houttuyniae, 6 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 10 parts of Pericarpium Citri Reticulatae, Radix Sophorae Tonkinensiss 5 Part, 10 parts of Aloe, 10 parts of Herba Taraxaci, 10 parts of Folium Isatidiss, 10 parts of mentha leave.
The preparation method of above-mentioned natural plant type formaldehyde scavenger, comprises the following steps:
Step 1, weighs the following raw material of amount according to the mass fraction: 10 parts of Fructus Forsythiae, 10 parts of Folium Artemisiae Argyi, 15 parts of Semen Cassiae, gold silver Spend 15 parts, 15 parts of Radix Isatidis, 20 parts of Herba Artemisiae Scopariae, 10 parts of Herba Houttuyniae, 6 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 10 parts of Pericarpium Citri Reticulatae, 5 parts of Radix Sophorae Tonkinensiss, 10 parts of Aloe, Pu 10 parts of Herba Taraxaci, 10 parts of Folium Isatidiss, 10 parts of mentha leave;
Step 2, above-mentioned raw materials is put into and carries out steaming and decocting in the water of 5-10 times of quality, and the temperature of steaming and decocting is 65-85 DEG C, the time For 30-60min, then filtered, the raw material after obtaining filtrate and filtering;
Step 3, is placed through ultrasonic grinder in the raw material to after filter and is crushed to below 20 mesh, be subsequently adding second Alcohol, more than 80 DEG C of reflux, extract, 10h, obtains extracting solution;
Step 4, by extracting solution in centrifuge with the centrifugation 15min of 3000r/min, then takes the supernatant, decompression Distillation removes ethanol, is subsequently adding the filtrate in step 2, and two kinds of liquid are pressed 1:1 mixing, then concentrated, prepared Chinese herbal medicine Formaldehyde scavenger.
Embodiment 3
A kind of Chinese herbal medicine formaldehyde scavenger, the following raw material including measuring in parts by weight: 8 parts of Fructus Forsythiae, 6 parts of Folium Artemisiae Argyi, certainly 10 parts of pine torch, 12 parts of Flos Lonicerae, 9 parts of Radix Isatidis, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, reed 6 parts of luxuriant growth, 8 parts of Herba Taraxaci, 6 parts of Folium Isatidiss, 8 parts of mentha leave.
The preparation method of above-mentioned natural plant type formaldehyde scavenger, comprises the following steps:
Step 1, weighs the following raw material of amount according to the mass fraction: 8 parts of Fructus Forsythiae, 6 parts of Folium Artemisiae Argyi, 10 parts of Semen Cassiae, Flos Lonicerae 12 parts, 9 parts of Radix Isatidis, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, 6 parts of Aloe, Herba Taraxaci 8 Part, 6 parts of Folium Isatidiss, 8 parts of mentha leave;
Step 2, above-mentioned raw materials is put into and carries out steaming and decocting in the water of 5-10 times of quality, and the temperature of steaming and decocting is 65-85 DEG C, the time For 30-60min, then filtered, the raw material after obtaining filtrate and filtering;
Step 3, is placed through ultrasonic grinder in the raw material to after filter and is crushed to below 20 mesh, be subsequently adding second Alcohol, more than 80 DEG C of reflux, extract, 10h, obtains extracting solution;
Step 4, by extracting solution in centrifuge with the centrifugation 15min of 3000r/min, then takes the supernatant, decompression Distillation removes ethanol, is subsequently adding the filtrate in step 2, and two kinds of liquid are pressed 1:1 mixing, then concentrated, prepared Chinese herbal medicine Formaldehyde scavenger.
Multiple modifications to embodiment will be apparent from for those skilled in the art, is determined herein The General Principle of justice can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, originally Invention is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty Consistent scope the widest.

Claims (4)

1. a kind of Chinese herbal medicine formaldehyde scavenger is it is characterised in that include the following raw material measured in parts by weight: Fructus Forsythiae 5-10 Part, Folium Artemisiae Argyi 5-10 part, Semen Cassiae 6-15 part, Flos Lonicerae 10-15 part, Radix Isatidis 5-15 part, Herba Artemisiae Scopariae 10-20 part, Herba Houttuyniae 5-10 Part, Cortex cinnamomi japonici (Ramulus Cinnamomi) 3-6 part, Pericarpium Citri Reticulatae 3-10 part, Radix Sophorae Tonkinensiss 1-5 part, Aloe 5-10 part, Herba Taraxaci 5-10 part, Folium Isatidiss 5-10 part, Herba Menthae Leaf 5-10 part.
2. Chinese herbal medicine formaldehyde scavenger according to claim 1 is it is characterised in that 8 parts of Fructus Forsythiae, 6 parts of Folium Artemisiae Argyi, Semen Cassiae 10 Part, 12 parts of Flos Lonicerae, 9 parts of Radix Isatidis, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, 6 parts of Aloe, 8 parts of Herba Taraxaci, 6 parts of Folium Isatidiss, 8 parts of mentha leave.
3. a kind of preparation method of the Chinese herbal medicine formaldehyde scavenger described in claim 1 is it is characterised in that comprise the following steps:
Step 1, weighs the following raw material of amount according to the mass fraction: Fructus Forsythiae 5-10 part, Folium Artemisiae Argyi 5-10 part, Semen Cassiae 6-15 part, gold Flos Lonicerae 10-15 part, Radix Isatidis 5-15 part, Herba Artemisiae Scopariae 10-20 part, Herba Houttuyniae 5-10 part, Cortex cinnamomi japonici (Ramulus Cinnamomi) 3-6 part, Pericarpium Citri Reticulatae 3-10 part, Radix Sophorae Tonkinensiss 1-5 part, Aloe 5-10 part, Herba Taraxaci 5-10 part, Folium Isatidiss 5-10 part, mentha leave 5-10 part;
Step 2, above-mentioned raw materials is put into and carries out steaming and decocting in the water of 5-10 times of quality, and the temperature of steaming and decocting is 65-85 DEG C, and the time is 30-60min, is then filtered, the raw material after obtaining filtrate and filtering;
Step 3, is placed through ultrasonic grinder in the raw material to after filter and is crushed to below 20 mesh, be subsequently adding ethanol, More than 80 DEG C of reflux, extract, 10h, obtain extracting solution;
Step 4, by extracting solution in centrifuge with the centrifugation 15min of 3000r/min, then takes the supernatant, vacuum distillation Remove ethanol, be subsequently adding the filtrate in step 2, two kinds of liquid are pressed 1:1 mixing, then concentrated, prepared Chinese herbal medicine formaldehyde Scavenger.
4. the preparation method of Chinese herbal medicine formaldehyde scavenger according to claim 3 is it is characterised in that raw material in step 1 For 8 parts of Fructus Forsythiae, 6 parts of Folium Artemisiae Argyi, 10 parts of Semen Cassiae, 12 parts of Flos Lonicerae, 9 parts of Radix Isatidis, 15 parts of Herba Artemisiae Scopariae, 6 parts of Herba Houttuyniae, 5 parts of Cortex cinnamomi japonici (Ramulus Cinnamomi), 4 parts of Pericarpium Citri Reticulatae, 2 parts of Radix Sophorae Tonkinensiss, 6 parts of Aloe, 8 parts of Herba Taraxaci, 6 parts of Folium Isatidiss, 8 parts of mentha leave.
CN201610781222.0A 2016-08-31 2016-08-31 Chinese herbal medicine formaldehyde scavenger and preparation method thereof Pending CN106362562A (en)

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CN106822976A (en) * 2017-03-28 2017-06-13 安徽中煦环保新材料科技有限公司 A kind of natural environmental-protective material with fresh air and preparation method thereof
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CN108014624A (en) * 2018-01-11 2018-05-11 史书亭 The preparation method of green smell scavenger and its application method and its application
CN109381983A (en) * 2018-10-31 2019-02-26 龙舟 A kind of compound formaldehyde of pure plant, odor scavenging agent and preparation method thereof
CN109794151A (en) * 2019-03-01 2019-05-24 陈丹 Methanal trapping agent is spraying and preparation method thereof
CN111226990A (en) * 2020-02-24 2020-06-05 辽宁德尔嘉新材料科技有限公司 Natural plant negative ion freshener for air sterilization and aldehyde removal and preparation method thereof

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