CN112385655A - Application of fatty acid methyl ester in plant pesticide and plant pesticide - Google Patents
Application of fatty acid methyl ester in plant pesticide and plant pesticide Download PDFInfo
- Publication number
- CN112385655A CN112385655A CN201910754061.XA CN201910754061A CN112385655A CN 112385655 A CN112385655 A CN 112385655A CN 201910754061 A CN201910754061 A CN 201910754061A CN 112385655 A CN112385655 A CN 112385655A
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- Prior art keywords
- fatty acid
- acid methyl
- methyl ester
- insecticide
- botanical insecticide
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/06—Unsaturated carboxylic acids or thio analogues thereof; Derivatives thereof
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses an application of fatty acid methyl ester in a plant pesticide, which aims to avoid the pollution of a large amount of chemical pesticides to the environment. The invention utilizes the characteristics of fat solubility and permeability of fatty acid methyl ester to kill insects, and can quickly dissolve or destroy epidermal cells and cortical cells of the body wall of the insects to achieve the aim of killing insects; the finished product has the advantages of wide insecticidal spectrum, high knockdown speed, no phytotoxicity to plants, low toxicity and harmlessness to human and livestock, environmental friendliness and easy degradation; greatly expands the new application field of the fatty acid methyl ester and opens up a new way for digesting and utilizing renewable resources.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to insect pest control of fatty acid methyl ester as a plant pesticide in the fields of agriculture, forestry, animal husbandry and landscaping.
Background
Chemical pesticides have significant or potential toxicity to humans, and many chemical pesticides can be retained in soil and water for long periods of time, causing air, land and water pollution, and spread to the human body through the food chain.
With the increasing pollution of pesticides and the increasing awareness of environmental protection, the country has put a number of policies to restrict or prohibit the use of highly toxic chemical pesticides. Fatty acid methyl ester (fatty acid methyl ester) is the methylation of fatty acid, and the molecular formula is CH3(CH2)nCOOCH3
Currently, the main market for fatty acid methyl esters is as a replacement for petroleum fuels, humectants, solvents, stabilizers, and plasticizer intermediates for biodiesel. At present, no fatty acid methyl ester is reported to be used as a main active ingredient in the preparation of the plant pesticide.
Disclosure of Invention
Aiming at the defects in the prior application technology, the invention aims to research and develop the new application of the fatty acid methyl ester as the plant pesticide and provide a friendly pesticide which is safer to human, livestock and environment and is easy to degrade. The use of chemical pesticides is reduced, and the pollution of chemical pesticides to agricultural products and the environment is reduced.
It is still another object of the present invention to provide a plant pesticide comprising fatty acid methyl ester as a main active ingredient.
In order to achieve the purpose, the invention adopts the following technical scheme:
the application of fatty acid methyl ester in the plant pesticide comprises the active component of the plant pesticide which is the fatty acid methyl ester.
A botanical insecticide comprises the following components in percentage by weight: 30-90% of fatty acid methyl ester, 5-70% of solvent, 0-10% of dispersant, 5-40% of emulsifier, 0-0.5% of thickener, 0-0.5% of stabilizer and 0-50% of auxiliary material.
Preferably, the fatty acid methyl ester is prepared from vegetable oil and animal oil by ester exchange.
Preferably, the fatty acid methyl ester is C6-C24A mixture of one or more than two fatty acid methyl esters.
Preferably, the fatty acid methyl ester is one or a mixture of two or more of methylated vegetable oil, methyl oleate and biodiesel containing fatty acid methyl ester as a main component.
Preferably, the thickener is xanthan gum.
Preferably, the stabilizer is one or more of benzoic acid, sorbic acid and cason.
Preferably, the solvent is one or a mixture of n-butanol and propylene glycol.
Preferably, the dispersant is one or more of naphthalene sulfonate formaldehyde condensate and polyphenylene ether phenyl ether phosphate.
Preferably, the emulsifier is one or more of dodecylbenzene sulfonic acid amine salt, calcium dodecylbenzene sulfonate, castor oil polyoxyethylene ether, triphenylethyl phenol polyoxyethylene ether and styrene phenol formaldehyde resin polyoxyethylene polyoxypropylene block polyether.
Preferably, the auxiliary material is one of argil, white carbon black and deionized water.
Preferably, the botanical insecticide is a microemulsion, a suspension, an emulsifiable concentrate or an aerosol.
A preparation method of the plant pesticide comprises the following steps: and putting the fatty acid methyl ester, the solvent, the dispersant, the emulsifier, the thickener, the stabilizer and the auxiliary materials into processing equipment according to a proportion, processing, sampling and detecting, and obtaining the botanical insecticide after the detection is qualified.
The invention has the beneficial effects that:
1. the invention utilizes the characteristics of fat solubility and permeability of fatty acid methyl ester to kill insects, and can quickly dissolve or destroy epidermal cells and cortical cells of the body wall of the insects to achieve the aim of killing insects;
2. the invention has the advantages of mature raw material preparation technology and convenient and sufficient acquisition; the finished product has the advantages of wide insecticidal spectrum, high knockdown speed, no phytotoxicity to plants, low toxicity and harmlessness to human and livestock, environmental friendliness and easy degradation;
3. the invention greatly widens the new application field of the fatty acid methyl ester, and opens up a new way for digesting and utilizing renewable resources. The popularization and application of the fatty acid methyl ester as the botanical insecticide must reduce the usage amount of chemical pesticides, particularly chemical insecticides, and play a great role in reducing the toxicity of chemical pesticide residues of agricultural products, improving the safety and quality of the agricultural products and protecting the human health and the ecological environment.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
The invention discloses development and application of fatty acid methyl ester as a plant insecticide, and the inventor discovers that the fatty acid methyl ester has activities of lipid solubility and permeability, can quickly dissolve or destroy epidermal cells and cortical cells of an insect body wall, and achieves the aim of killing insects through laboratory research. The insects which can be killed include but are not limited to eggs, nymphs, larvae and adults of aphids, whiteflies, bemisia tabaci, spider mites, white spiders, cabbage caterpillars, tea mites, pine caterpillars, navicula, cotton bollworms, rice leaf rollers and the like.
Hereinafter, the use of fatty acid methyl ester as a main active ingredient in a plant pesticide will be described with reference to specific examples.
In the examples of the present invention, fatty acid methyl esters were prepared by transesterification of vegetable oils and animal oils. In the transesterification method, glyceride reacts with alcohol (mainly sodium methoxide or potassium methoxide) in the presence of catalyst (such as strong acid and strong base) to form a mixture of fatty acid ester and alcohol, and the mixture is subjected to multi-stage distillation and fractionation to obtain the fatty acid methyl ester required by the preparation. In particular, fatty acid methyl ester is C6-C24A mixture of one or more than two fatty acid methyl esters.
Example 1
The botanical insecticide is prepared into microemulsion which comprises the following components in percentage by weight: 30% of fatty acid methyl ester, 5% of n-butyl alcohol, 12% of dodecylbenzene sulfonic acid amine salt, 8% of castor oil polyoxyethylene ether, 5% of triphenylethyl phenol polyoxyethylene ether, 0.3% of carbone, 0.1% of xanthan gum and the balance of deionized water.
The preparation method comprises the following steps:
(1) pouring all components except the deionized water into a shearing machine and uniformly mixing;
(2) starting the shearing machine to 600 revolutions per minute for 60-90min, injecting deionized water, continuing extruding, shearing and homogenizing for 90-120min after injection, sampling and detecting, and checking to be qualified when the particle size reaches D (90) to 3-5 um. And (7) packaging a finished product.
Example 2
The botanical insecticide is prepared into a suspending agent, which comprises the following components in percentage by weight: 40% of fatty acid methyl ester, 2.8% of naphthalene sulfonate formaldehyde condensate, 5% of n-butyl alcohol, 0.2% of carbone, 12% of calcium dodecyl benzene sulfonate, 5% of castor oil polyoxyethylene ether and white carbon black.
The preparation method comprises the following steps:
(1) adding the components into a reaction kettle in proportion, and stirring and homogenizing for 60-90min at 300 r/min;
(2) and (3) injecting the homogenized mixture into a sand mill, grinding for 90-120min, sampling and detecting, and detecting when the particle size of the material reaches D (90) ═ 2-5 mu m, wherein the detection is qualified. And (7) packaging a finished product.
Example 3
Preparing the plant insecticide into Emulsifiable Concentrate (EC) which comprises the following components in percentage by weight: 50% of fatty acid methyl ester, 12% of calcium dodecyl benzene sulfonate, 5% of triphenylethylphenol polyoxyethylene ether, 10% of castor oil polyoxyethylene ether and n-butyl alcohol.
The preparation method comprises the following steps:
the components are proportionally injected into a reaction kettle, stirred and homogenized for 60-90min at the speed of 300 revolutions per minute, and the components are sampled and detected to be qualified when the particle size of the materials reaches 3-5 mu m (D90). And (7) packaging a finished product.
Example 4
Preparing the botanical insecticide into aerosol, which comprises the following components in percentage by weight: 60% of fatty acid methyl ester, 5% of phenyl ether phosphate ester of polystyrol, 0.2% of karson, 10% of calcium dodecyl benzene sulfonate, 5% of castor oil polyoxyethylene ether, 5% of triphenylethylphenol polyoxyethylene ether and propylene glycol.
The preparation method comprises the following steps:
(1) proportionally injecting the raw materials into a reaction kettle, and stirring and homogenizing for 60-90min at 300 r/min;
(2) sampling and detecting, and detecting when the particle size of the material reaches D (90) ═ 3-5 mu m. And injecting the qualified aerosol into a filling machine, and packaging to obtain a finished product.
Example 5
The botanical insecticide prepared according to example 3 was used for field cabbage caterpillars control. The test results are shown in Table 1.
During the test, the dosage of the medicament is divided into 500 g/hectare treatment, 800 g/hectare treatment and 1000 g/hectare treatment of the active ingredient, wherein the active ingredient refers to the botanical insecticide. After the liquid medicine is sprayed, the control effect is judged according to the number of the residual insects in one day after the pesticide is sprayed, three days after the pesticide is sprayed and seven days after the pesticide is sprayed.
TABLE 1 field test results of pesticide effect of 50%% fatty acid methyl ester EC (emulsifiable concentrate) for plant pesticide on cabbage caterpillar
As can be seen from the test results in Table 1, the 50% fatty acid methyl ester EC (emulsifiable concentrate) of example 3 has a good control effect on cabbage caterpillar when applied to a field.
One day after the pesticide is applied, the effective components of the pesticide are treated at 500 g/hectare, 800 g/hectare and 1000 g/hectare, and the average control effect on cabbage caterpillars is 67.06%, 81.01% and 83% in sequence.
After three days after the pesticide is applied, the effective components are treated at 500 g/hectare, 800 g/hectare and 1000 g/hectare, and the average control effect on cabbage caterpillar is 81.65%, 90.45% and 93.92% in sequence.
Seven days after the pesticide is applied, the effective components are treated by 500 g/hectare, 800 g/hectare and 1000 g/hectare, and the average control effect on cabbage caterpillars is 83.06%, 93.04% and 96.79% in sequence.
Analysis shows that when the emulsifiable solution type plant insecticide of the embodiment 3 is used for preventing cabbage caterpillars, the appropriate dosage is 800 g/hectare of the effective component, when cabbage caterpillars occur greatly, the dosage can be increased to 1000 g/hectare of the effective component, the insecticide is applied before the third-instar period of cabbage caterpillars, the amount of the insecticide is 30 kg per mu, and the insecticide is uniformly sprayed, so that the cabbage caterpillars can be effectively prevented. Moreover, no adverse effect of the botanical insecticide on cabbage growth was found during the test.
The drug is safe and efficient, can better control the harm of cabbage caterpillar, and can be popularized and applied in cabbage fields in a large area.
The fatty acid methyl ester pesticide provided by the invention is used for developing and applying a plant pesticide, develops a new application field of the fatty acid methyl ester, and provides a safe, harmless, environment-friendly and effective biological pesticide for preventing and treating common insect pests such as aphids, whiteflies, bemisia tabaci, red spiders, cabbage caterpillars, tea mites, pine caterpillars and navicula in the industries such as agriculture, forestry, animal husbandry and landscaping.
The fatty acid methyl ester of the present invention is produced from vegetable oils and animal oils, such as vegetable acidified oil, coconut oil, castor oil, soybean oil, corn oil, olive oil, rapeseed oil, peanut oil, animal fat, etc., by transesterification. In the transesterification method, glyceride reacts with alcohol (mainly sodium methoxide or potassium methoxide) in the presence of catalyst (such as strong acid and strong base) to form a mixture of fatty acid ester and alcohol, and the mixture is subjected to multi-stage distillation and fractionation to obtain the fatty acid methyl ester required by the preparation. Therefore, the active component fatty acid methyl ester in the invention is a reproducible, non-toxic and biodegradable environment-friendly product to replace chemical pesticide varieties with high toxicity and difficult degradation. In conclusion, the invention is a safe and friendly biological insecticide which is urgently needed in the market.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. The application of the fatty acid methyl ester in the plant insecticide is characterized in that the active component of the plant insecticide is the fatty acid methyl ester.
2. The botanical insecticide as claimed in claim 1, comprising the following components in weight percent: 30-90% of fatty acid methyl ester, 5-70% of solvent, 0-10% of dispersant, 5-40% of emulsifier, 0-0.5% of thickener, 0-0.5% of stabilizer and 0-50% of auxiliary material.
3. The plant pesticide according to claim 2, wherein the fatty acid methyl ester is prepared by transesterification of a vegetable oil or an animal oil; the fatty acid methyl ester is C6-C24A mixture of one or more than two fatty acid methyl esters.
4. The plant pesticide according to claim 2, wherein the fatty acid methyl ester is one or a mixture of two or more of a methylated vegetable oil, methyl oleate, and biodiesel containing a fatty acid methyl ester as a main component.
5. The botanical insecticide as claimed in claim 2, wherein said thickener is xanthan gum; the stabilizer is one or more of benzoic acid, sorbic acid and kasong.
6. The botanical insecticide as claimed in claim 2, wherein the solvent is one or a mixture of n-butanol and propylene glycol; the dispersant is one or more of naphthalene sulfonate formaldehyde condensate and polyphenylene ether phenyl ether phosphate.
7. A botanical insecticide as claimed in claim 2, characterised in that the emulsifier is one or more of an amine salt of dodecylbenzene sulphonate, calcium dodecylbenzene sulphonate, castor oil polyoxyethylene ether, tristyrylphenol polyoxyethylene ether, a styrene phenol formaldehyde resin polyoxyethylene polyoxypropylene block polyether.
8. The botanical insecticide as claimed in claim 2, wherein the adjuvant is one of pottery clay, white carbon black and deionized water.
9. The botanical insecticide as claimed in claim 2, wherein the botanical insecticide is a microemulsion, a suspension, an emulsifiable concentrate or an aerosol.
10. A method for preparing a botanical insecticide as claimed in claims 2 to 9 comprising the steps of: and putting the fatty acid methyl ester, the solvent, the dispersant, the emulsifier, the thickener, the stabilizer and the auxiliary materials into processing equipment according to a proportion, processing, sampling and detecting, and obtaining the botanical insecticide after the detection is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910754061.XA CN112385655A (en) | 2019-08-15 | 2019-08-15 | Application of fatty acid methyl ester in plant pesticide and plant pesticide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910754061.XA CN112385655A (en) | 2019-08-15 | 2019-08-15 | Application of fatty acid methyl ester in plant pesticide and plant pesticide |
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| CN112385655A true CN112385655A (en) | 2021-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112690284A (en) * | 2019-10-22 | 2021-04-23 | 烟台七微肥料有限公司 | Pesticide/fertilizer synergistic additive and preparation method thereof |
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| WO2018213443A1 (en) * | 2017-05-16 | 2018-11-22 | The United States Of America, As Represented By The Secretary Of Agriculture | Methods for repelling blood-sucking and biting insects, ticks and mites |
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2019
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Patent Citations (8)
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| CN101194606A (en) * | 2006-12-04 | 2008-06-11 | 湖南万家丰科技有限公司 | Pesticide missible oil preparation containing biological diesel oil solvent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112690284A (en) * | 2019-10-22 | 2021-04-23 | 烟台七微肥料有限公司 | Pesticide/fertilizer synergistic additive and preparation method thereof |
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Application publication date: 20210223 |