CN103081907A - Capsaicin-containing pesticidal aqueous emulsion and preparation method thereof - Google Patents
Capsaicin-containing pesticidal aqueous emulsion and preparation method thereof Download PDFInfo
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- CN103081907A CN103081907A CN2013100608756A CN201310060875A CN103081907A CN 103081907 A CN103081907 A CN 103081907A CN 2013100608756 A CN2013100608756 A CN 2013100608756A CN 201310060875 A CN201310060875 A CN 201310060875A CN 103081907 A CN103081907 A CN 103081907A
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- aqueous emulsion
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Abstract
The invention relates to the technical field of biopesticide, and in particular relates to capsaicin-containing pesticidal aqueous emulsion. The capsaicin-containing pesticidal aqueous emulsion comprises the following components in percentage by weight: 0.5%-2% of capsaicin, 5%-20% of a solvent, 5%-15% of an emulsifier, 3%-10% of a dispersing agent, 2%-8% of an anti-freezing agent, 0.5%-2% of a thickener, 1%-5% of a hypertonic agent, and the balance of water. The preparation method of the capsaicin-containing pesticidal aqueous emulsion comprises the following steps of: firstly, preparing the components according to the set weight percentage; secondly, adding the capsaicin in a reactor, dissolving the capaicin with alcohol, adding the emulsifier and uniformly mixing the components to obtain an oil-phase mixture; adding the dispersing agent, the thickener and the anti-freezing agent to the water and uniformly mixing the components to obtain a water-phase mixture; and finally, mixing, shearing and stirring the oil-phase mixture with the water-phase mixture for 5 minutes to 10 minutes to obtain the capsaicin-containing pesticidal aqueous emulsion. The pesticidal aqueous emulsion belongs to botanical pesticides, and is green and environment-friendly and pollution-free to the ecological environment, so the pesticidal aqueous emulsion is an ideal, safe and pollution-free green pesticide.
Description
Technical field
The present invention relates to biological pesticide technical field, be specifically related to a kind of disinsection aqueous emulsion that contains capsaicine.
Background technology
For a long time, people utilize the chemical pesticide control damage by disease and insect to obtain remarkable achievement, but the long-term use of chemical pesticide has also brought following problem: contaminated environment, soil compaction, residual exceeding standard, and it is healthy to have affected people, animal.Due to the long-term use of chemical pesticide, some insect has produced obvious resistance simultaneously, and the preventive effect of chemical pesticide is descended, in order to ensure insecticidal effect, the consumption of chemical pesticide constantly increases, and result has improved the cost of pest control, has also increased the weight of user's burden.
Enhancing along with people's environmental consciousness, the severe toxicity chemical pesticide is being under an embargo and is producing and use, development low toxicity, few residual or noresidue, few resistance or nonresistant pesticide species are just worldwide deepened, botanical biological pesticide wherein is one of low toxicity, few noresidue, few nonresistant important pesticide species, is also emphasis and the focus of present biopesticide research.
Summary of the invention
One of purpose of the present invention is to provide a kind of disinsection aqueous emulsion that contains capsaicine, and this disinsection aqueous emulsion good disinsection effect and insecticidal spectrum are wide, also has advantages of simultaneously to produce and use safety non-pollution, few noresidue, few non-resistant, low toxicity and with low cost.
For achieving the above object, the present invention has adopted following technical scheme: a kind of disinsection aqueous emulsion that contains capsaicine, and this disinsection aqueous emulsion is made of following component according to percentage by weight:
Capsaicine: 0.5～2%
Solvent: 5～20%;
Emulsifier: 5～15%:
Dispersant: 3～10%;
Antifreeze: 2～8%;
Thickener: 0.5～2%;
High osmotic agent: 1～5%
All the other are water.
Simultaneously, the present invention can also be able to further realization by following technical measures:
Preferably, described solvent is DMF or ethanol; Described emulsifier is that emulsifier A3 is that castor oil and ethylene oxide condensate or emulsifier A4 are fatty alcohol and ethylene oxide condensate; Described dispersant is that dispersant FA is that naphthalene sulfonic acid-formaldehyde condensation product sodium salt, dispersant FB are that acrylate homopolymer or acrylic acid series copolymer salt or dispersant FC are macromolecular grafted sulfonate; Described antifreeze is that urea or sodium chloride or antifreeze D are ethylene glycol; Described thickener is that xanthans or CMC are that sodium carboxymethylcellulose or C1 are that mineral clay or C2 are aluminium-magnesium silicate; Described high osmotic agent is polyoxyethylene ether compound or aerosol-OT salt or alkoxy-modified poly-trisiloxanes.
Preferably, the weight percent content of each constituent of this disinsection aqueous emulsion is:
Capsaicine: 0.5%;
Ethanol: 10%;
Emulsifier A3:5%;
Emulsifier A4:2%;
Dispersant FC:5%;
Antifreeze D:4%;
Thickener C2:1%;
High osmotic agent: 2%
All the other are water.
Two of purpose of the present invention is to provide a kind of preparation method who contains the disinsection aqueous emulsion of capsaicine, it is characterized in that comprising the steps:
1), at first each component is carried out proportioning according to the percentage by weight of setting;
2), capsaicine is placed in reactor, with the ethanol dissolving, then mix after adding emulsifier and high osmotic agent, obtain oil mixture;
Water is placed in another reactor, and Xiang Shuizhong adds successively dispersant, thickener, antifreeze and mixes, and obtains aqueous mixture;
3), with step 2) resulting oil mixture and aqueous mixture mix, shear agitation 5～10 minutes can make the disinsection aqueous emulsion that contains capsaicine.
Advantage of the present invention and innovative point are:
1), the capsaicine in this disinsection aqueous emulsion extracts from the plant capsicum, derives from plant, the platymiscium source pesticide has the characteristics of environmental protection, meets China's biopesticide industrial development direction.
2), this disinsection aqueous emulsion is stable emulsion, it is with the former medicine of capsaicine, emulsifier, dispersant, antifreeze, thickener, high osmotic agent, a small amount of etoh solvent and water, in the situation that the stable homogeneous phase formulation of a kind of high degree of dispersion that forms is stirred in high shear.Because solvent is the second alcohol and water, without other poisonous organic solvents, make this disinsection aqueous emulsion pollution-free to ecotope, be a kind of Water-borne modification product of environmental protection more, be also a kind of desirable, safety, nuisanceless green agricultural chemicals.
3) disinsection aqueous emulsion that, originally contains capsaicine has strong Transdermal absorption effect, capsaicine in disinsection aqueous emulsion and the capsaicine receptors bind on neuron membrane, can promote that calcium sodium is isoionic enters, block nerves cell impulsion direction, to killing the insect successfuls such as cabbage caterpillar, aphid, good to the pest controling effect of the crops such as vegetables, fruit tree, cotton, wheat.Thereby make the present invention have good insecticidal effect.
4), innovative point
The emulsion type biopesticide preparation that this disinsection aqueous emulsion system utilizes the systems such as natural extract capsaicine and emulsifier, dispersant, antifreeze, thickener, high osmotic agent, solvent to join, formula is advanced, the technique reasonable, production process is discharged without " three wastes " substantially, compare with microemulsion, have safety, economic, environment amenable characteristics, filled up domestic blank, be on the leading domestic level.
(1) extracted form natural plant
Enhancing along with the health of people environmental consciousness, low-residual, efficiently the environmental type agricultural chemicals is more and more concerned, effective component extracting is used for the extermination of disease and insect pest as agricultural chemicals from natural plants has become one of focus of people's research, and the initiative of modern novel pesticide is had important directive significance.
(2) green nuisance free pesticide, safe noresidue
Capsicum is a kind of conventional food, capsaicine has the mode of action of non-residual toxicity to insect, and has wide DEVELOPMENT PROSPECT, capsaicine also has advantages of easily degraded in natural environment simultaneously, thereby, this disinsection aqueous emulsion is conducive to the sustainable development of the ecological agriculture in the application study of pesticide field.Because capsaicine is a kind of natural source product and the non-residual toxicity mode of action, EPA(Environmental Protection Agency USA in 1991) exempted the residual quantitative limitation of capsaicine on fruit, vegetables and cereal.EPA thinks, as a kind of conventional food, does not find the evidence that capsaicine is harmful, and the disinsection aqueous emulsion that therefore contains capsaicine can not pollute natural environment and ecology.
(3) formulation innovation
Aqueous emulsion agent is nearly ten years a kind of new pesticide processing technology that grow up, its core is take water as matrix, do not contain poisonous inflammable organic solvent, non-environmental-pollution, can greatly improve the safety to producing, storing and transporting and use, be to replace the desirable green pesticide forms such as emulsion, wetting powder.For the biopesticide capsaicine, more brought into play the characteristics of biopesticide environmental protection, guaranteed pollution-free, noresidue fully, meet China's biopesticide industrial development direction.
(4) formula innovation
In order to make this disinsection aqueous emulsion reach the purpose of environmental protection, we applicant has done bold improvement on formula, through different types of auxiliary agents such as solvent, bleeding agent, surfactant, stabilizing agent, antifreeze and preservative have been carried out a large amount of screenings, determined suitable auxiliary agent.The applicant is dissolved capsaicine with harmless nontoxic ethanol, and has added high osmotic agent, thereby the quick-acting of this disinsection aqueous emulsion and permeability are strengthened greatly.Because solvent is ethanol, without other poisonous organic solvent, make the disinsection aqueous emulsion that originally contains capsaicine be the waterborne preparation product of environmental protection more, environmentally safe is a kind of desirable nuisanceless green agricultural chemicals.
Embodiment
Below in conjunction with embodiment to the preparation of this disinsection aqueous emulsion with make to be used as and illustrate.
Contain the preparation of the disinsection aqueous emulsion of capsaicine
Embodiment 1
Each component is carried out proportioning according to following percentage by weight:
Capsaicine: 0.5%, ethanol: 10%, emulsifier A3:5%, emulsifier A4:2%, dispersant FC:5%, antifreeze D:4%, thickener C2:1%, high osmotic agent polyoxyethylene ether compound: 2%, all the other are water.
Capsaicine is placed in beaker, with the ethanol dissolving, then adds emulsifier A3, emulsifier A4 and high osmotic agent polyoxyethylene ether compound, mix, obtain oil mixture.
Water is placed in beaker, and Xiang Shuizhong adds successively dispersant FC, thickener C2, antifreeze D and mixes, and obtains aqueous mixture.
Last in the situation that the high shear stirring adds oil mixture in aqueous mixture, mix namely making the disinsection aqueous emulsion that contains capsaicine in 5 minutes at 5000 rev/mins of lower homogeneous of rotating speed.
The all technical of the disinsection aqueous emulsion that makes in the present embodiment 1 is as shown in table 1.
Table 1
Embodiment 2
Each component is carried out proportioning according to following percentage by weight:
Capsaicine: 1.0%, ethanol: 15%, emulsifier A3:6%, emulsifier A4:3%, dispersant FC:8%, antifreeze D:5%, thickener C2:1.5%, high osmotic agent aerosol-OT salt: 2.5%, all the other are water.
Capsaicine is placed in beaker, with the ethanol dissolving, then adds emulsifier A3, emulsifier A4 and high osmotic agent aerosol-OT salt, mix, obtain oil mixture.
Water is placed in beaker, and Xiang Shuizhong adds successively dispersant FC, thickener C2, antifreeze D and mixes, and obtains aqueous mixture.
Last in the situation that the high shear stirring adds oil mixture in aqueous mixture, mix namely making the disinsection aqueous emulsion that contains capsaicine in 5 minutes at 5000 rev/mins of lower homogeneous of rotating speed.
The all technical of the disinsection aqueous emulsion that makes in the present embodiment 2 is as shown in table 2.
Table 2
Embodiment 3
Each component is carried out proportioning according to following percentage by weight:
Capsaicine: 1.5%, ethanol: 18%, emulsifier A3:4%, emulsifier A4:4%, dispersant FC:10%, antifreeze D:8%, thickener C2:1.2%, the alkoxy-modified poly-trisiloxanes of high osmotic agent: 5%, all the other are water.
Capsaicine is placed in beaker, with the ethanol dissolving, then adds emulsifier A3, emulsifier A4 and the alkoxy-modified poly-trisiloxanes of high osmotic agent, mix, obtain oil mixture.
Again water is placed in beaker, Xiang Shuizhong adds successively dispersant FC, thickener C2, antifreeze D and mixes, and obtains aqueous mixture.
Last in the situation that the high shear stirring adds oil mixture in aqueous mixture, mix namely making the disinsection aqueous emulsion that contains capsaicine in 10 minutes at 5000 rev/mins of lower homogeneous of rotating speed.
The all technical of the disinsection aqueous emulsion that makes in the present embodiment 3 is as shown in table 3.
Table 3
Contain the use of the disinsection aqueous emulsion of capsaicine
Originally the disinsection aqueous emulsion that contains capsaicine has strong Transdermal absorption effect, and the capsaicine in disinsection aqueous emulsion and the capsaicine receptors bind on neuron membrane can promote that calcium sodium is isoionic to enter, block nerves cell impulsion direction.
Originally contain the disinsection aqueous emulsion of capsaicine to killing the insect successfuls such as cabbage caterpillar, aphid, good to the pest controling effect of the crops such as vegetables, fruit tree, cotton, wheat.
The disinsection aqueous emulsion that contains capsaicine that now prepares in the embodiment 1 is prevented and treated the cabbage caterpillar field control effectiveness test as example, and test is completed in November, 2010 by the agriculture chemical examination institution, Anhui Province.
Test report is as follows:
1, experimental condition
1.1 crop, kind and subjects
Crop: wild cabbage; Kind: summer light; Subjects: cabbage caterpillar.
1.2 environmental condition
This test is located at ground, old vegetable garden, Tang Miao farm, Xiao County, Anhui Province, and kind is summer light, and wild cabbage is to transplant September 28, and planting density is that about every mu of 2600 strains, the duration of test wild cabbage is in the rosette stage, and growing way is better.Cabbage caterpillar is take 2～3 ages as main, and soil property is yellow soil, and irrigation conditions is better, and other cultivations, management condition are consistent with local agricultural practice.
2, experimental scheme and arrangement
2.1 reagent agent
Reagent agent 0.5% capsaicine aqueous emulsion is also that the disinsection aqueous emulsion for preparing in embodiment 1 is provided by Anhui Lu Ye agriculture Co., Ltd, and contrast medicament 0.5% matrine water emulsion is the commercially available product that Shandong Province Laiyang City spark agricultural chemicals Co., Ltd produces.
2.2 medicament and processing
I 0.5% capsaicine aqueous emulsion 75 grams/667m
2
II 0.5% capsaicine aqueous emulsion 100 grams/667m
2
III 0.5% capsaicine aqueous emulsion 150 grams/667m
2
IV 0.3% matrine water emulsion 120 grams/667m
2
The contrast of V clear water
2.3 the residential quarter arranges
Above six processing, four repetitions are counted 24 residential quarters, the equal randomized arrangement in each residential quarter, residential quarter area 30m
2Establishing guard row between the residential quarter separates.
2.4 spraying time and application method
In dispenser in afternoon on October 12 in 2010, with artificial backpack workers and peasants 16 type atomizer spray, the operating pressure of sprayer was 0.2～0.3Mpa, and spray sheet aperture is 0.7mm, every 667m
2Use liquid 50kg.
3, investigation, record and measuring method
3.1 meteorological data
Dispenser same day is fine day, 2 grades of south winds, 20～30 ℃ of temperature, duration of test no-trump rain, 29～31 ℃ of the maximum air temperatures, 19～21 ℃ of the minimum air temperatures.
3.2 investigation method and statistical effect
Investigation insect population radix before dispenser was respectively investigated insect pest situation one time in 1,3,7 day after medicine, namely fixed 15 at middle part, every residential quarter, searched residual borer population, calculated the insect population decline rate and proofreaied and correct preventive effect.Carry out statistical computation according to State Standard of the People's Republic of China " pesticide field efficacy medicine test criterion () " regulation, difference on effect significance test DMRT method between each is processed.
4, results and analysis
4.1 can find out from result of the test (table 4), after medicine 1 day, 0.5% capsaicine aqueous emulsion control cabbage caterpillar was respond well.75,100,150 grams/667m
2The preventive effect of three dosage processing is respectively 62.47%, 73.95%, 80.92%, and contrast medicament 0.3% matrine water emulsion 120 grams/667m
2The preventive effect of processing is 72.79%.
3 days is that preventive effect is outstanding after the medicine, 0.5% capsaicine aqueous emulsion 75,100,150 grams/667m
2The preventive effect of three dosage processing is respectively 67.65%, 76.36%, 82.72%, and contrast medicament 0.3% matrine water emulsion 120 grams/667m
2The preventive effect of processing is 76.65%.
The lasting effect of 7 days investigation after medicine, 0.5% capsaicine aqueous emulsion 75,100,150 grams/667m
2The preventive effect of three dosage processing is respectively 65.19%, 71.33%, 77.52%, and contrast medicament 0.3% matrine water emulsion 120 grams/667m
2The preventive effect of processing is 72.46%.
4.2 can be found out by table 5 variance analysis, after medicine 3 days, 0.5% capsaicine aqueous emulsion 150 grams/667m
2Preventive effect be preferably 82.72%, 0.3% matrine water emulsion 120 grams/667m
2The preventive effect of processing is respectively 76.65%, and difference is not remarkable between the two, 0.5% capsaicine aqueous emulsion 100 grams/667m
2Preventive effect be 76.36%, with above variant but not remarkable between the two.0.5% capsaicine aqueous emulsion 75 grams/667m
2Preventive effect the poorest be 67.65%, and respectively process significant difference with other.
5, conclusion
5.10.5% the capsaicine aqueous emulsion is the insecticide of an outstanding control cabbage caterpillar, and the field recommends consumption at 100-150 grams/667m
2The time, preventive effect is outstanding.Dispenser after 7 days preventive effect still reach more than 90%.
5.20.5% growth has no adverse effects the capsaicine aqueous emulsion to wild cabbage under recommended dose, occurs without poisoning.Compare traditional vegetable insecticide matrine water emulsion, the capsaicine aqueous emulsion has stronger repellent action concurrently.
Table 4,0.5% capsaicine aqueous emulsion control cabbage caterpillar field efficacy investigation statistics result
Preventive effect variance analysis in 3 days after table 5,0.5% capsaicine aqueous emulsion control cabbage caterpillar medicine
Claims (4)
1. disinsection aqueous emulsion that contains capsaicine is characterized in that this disinsection aqueous emulsion is made of following component according to percentage by weight:
Capsaicine: 0.5～2%
Solvent: 5～20%;
Emulsifier: 5～15%:
Dispersant: 3～10%;
Antifreeze: 2～8%;
Thickener: 0.5～2%;
High osmotic agent: 1～5%;
All the other are water.
2. the disinsection aqueous emulsion that contains capsaicine according to claim 1, it is characterized in that: described solvent is DMF or ethanol; Described emulsifier is that emulsifier A3 is that castor oil and ethylene oxide condensate or emulsifier A4 are fatty alcohol and ethylene oxide condensate; Described dispersant is that dispersant FA is that naphthalene sulfonic acid-formaldehyde condensation product sodium salt, dispersant FB are that acrylate homopolymer or acrylic acid series copolymer salt or dispersant FC are macromolecular grafted sulfonate; Described antifreeze is that urea or sodium chloride or antifreeze D are ethylene glycol; Described thickener is that xanthans or CMC are that sodium carboxymethylcellulose or C1 are that mineral clay or C2 are aluminium-magnesium silicate; Described high osmotic agent is polyoxyethylene ether compound or aerosol-OT salt or alkoxy-modified poly-trisiloxanes.
3. the disinsection aqueous emulsion that contains capsaicine according to claim 2 is characterized in that the weight percent content of each constituent of this disinsection aqueous emulsion is:
Capsaicine: 0.5%;
Ethanol: 10%;
Emulsifier A3:5%;
Emulsifier A4:2%;
Dispersant FC:5%;
Antifreeze D:4%;
Thickener C2:1%;
High osmotic agent: 2%
All the other are water.
4. a preparation method who contains the disinsection aqueous emulsion of capsaicine according to claim 1, is characterized in that comprising the steps:
1), at first each component is carried out proportioning according to the percentage by weight of setting;
2), capsaicine is placed in reactor, with the ethanol dissolving, then mix after adding emulsifier and high osmotic agent, obtain oil mixture;
Water is placed in another reactor, and Xiang Shuizhong adds dispersant, thickener, antifreeze and mixes, and obtains aqueous mixture;
3), with step 2) resulting oil mixture and aqueous mixture mix, shear agitation 5～10 minutes can make the disinsection aqueous emulsion that contains capsaicine.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104137856A (en) * | 2014-08-14 | 2014-11-12 | 颜长保 | Biological insecticide and preparation method thereof |
| CN105532732A (en) * | 2015-12-17 | 2016-05-04 | 广西壮族自治区亚热带作物研究所 | Mango leaf gall midge pesticide and preparation method thereof |
| CN106857517A (en) * | 2016-12-26 | 2017-06-20 | 中国农业科学院植物保护研究所 | A kind of synergetic pesticide composition and application |
| CN106973960A (en) * | 2017-03-30 | 2017-07-25 | 袁长吉 | Tuber of stemona capsicum insecticide and preparation method thereof |
| CN107751218A (en) * | 2016-08-15 | 2018-03-06 | 恩施和诺生物工程有限责任公司 | A kind of nicotine oil-suspending agent |
| CN110150329A (en) * | 2017-12-29 | 2019-08-23 | 云南宏绿辣素有限公司 | The insecticide and its processing method of capsaicine and purple stem boneset extract compounding |
| CN111264120A (en) * | 2020-02-19 | 2020-06-12 | 楚雄宏丰农业科技开发有限公司 | Method for inhibiting weed seed germination by using natural capsaicin aqueous emulsion |
| CN114831143A (en) * | 2022-03-22 | 2022-08-02 | 河南抱一堂医药科技有限公司 | Biological organic anthelmintic and preparation method and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104137856A (en) * | 2014-08-14 | 2014-11-12 | 颜长保 | Biological insecticide and preparation method thereof |
| CN105532732A (en) * | 2015-12-17 | 2016-05-04 | 广西壮族自治区亚热带作物研究所 | Mango leaf gall midge pesticide and preparation method thereof |
| CN107751218A (en) * | 2016-08-15 | 2018-03-06 | 恩施和诺生物工程有限责任公司 | A kind of nicotine oil-suspending agent |
| CN106857517A (en) * | 2016-12-26 | 2017-06-20 | 中国农业科学院植物保护研究所 | A kind of synergetic pesticide composition and application |
| CN106973960A (en) * | 2017-03-30 | 2017-07-25 | 袁长吉 | Tuber of stemona capsicum insecticide and preparation method thereof |
| CN110150329A (en) * | 2017-12-29 | 2019-08-23 | 云南宏绿辣素有限公司 | The insecticide and its processing method of capsaicine and purple stem boneset extract compounding |
| CN111264120A (en) * | 2020-02-19 | 2020-06-12 | 楚雄宏丰农业科技开发有限公司 | Method for inhibiting weed seed germination by using natural capsaicin aqueous emulsion |
| CN114831143A (en) * | 2022-03-22 | 2022-08-02 | 河南抱一堂医药科技有限公司 | Biological organic anthelmintic and preparation method and application thereof |
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