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Rotenone microemulsion and preparation method thereof

A technology of rotenone and microemulsion, which is applied in the field of rotenone microemulsion and its preparation, can solve the problems of large environmental hazards and backward rotenone formulations, and achieve the effects of reducing production costs, improving control effects, and improving economic benefits

Inactive Publication Date: 2014-04-23
深圳市华农生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a rotenone microemulsion and its preparation method, aiming to solve the problem that the current rotenone dosage form is outdated and harmful to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The rotenone microemulsion of this embodiment uses rotenone as an active ingredient, is equipped with a solvent, an emulsifier, a penetrating agent, a stabilizer, and a cosolvent, and is uniformly dispersed in water to form an O / W type rotenone microemulsion. It is characterized in that: it contains by mass percentage:

[0044] Rotenone 0.5%,

[0045] Solvent 1.5%,

[0046] Emulsifier 22%,

[0047] Penetrant 16%,

[0048] Stabilizer 15%,

[0049] Co-solvent 20%,

[0050] water 25%;

[0051] The emulsifier is star anise oil, the solvent is ethanol, the penetrant is CT-901 penetrant, the stabilizer is gelatin, and the cosolvent is N·N dimethylformamide.

[0052] The preparation method of the rotenone microemulsion in the present embodiment, first 0.5% rotenone and 1.5% solvent, 22% star anise oil, 16% penetrant, 15% stabilizer, 20% cosolvent in shear In the cutting machine, stir and mix evenly, then add 25% deionized water, mix evenly again, then let it stand for 5...

Embodiment 2

[0054] The invention discloses a rotenone microemulsion, which uses rotenone as an active ingredient, is matched with a solvent, an emulsifier, a penetrating agent, a stabilizer, and a cosolvent, and is uniformly dispersed in water to form an O / W type rotenone microemulsion. Contains by mass percentage:

[0055]Rotenone 25%,

[0056] Solvent 45%,

[0057] Emulsifier 3%,

[0058] Penetrant 2%,

[0059] Stabilizer 1%,

[0060] Co-solvent 2%,

[0061] Water 22%;

[0062] The emulsifier is star anise oil, the solvent is ethanol, the penetrant is CT-901 penetrant, the stabilizer is gelatin, and the cosolvent is N·N dimethylformamide.

[0063] The preparation method of the rotenone microemulsion in the present embodiment, first 25% rotenone and 45% solvent, 3% star anise oil, 2% penetrant, 1% stabilizer, 2% cosolvent and 22 % water in a shearing machine, stir and mix evenly, then let it stand for 7 hours, heat to 65°C, and stir well, then the rotenone microemulsion can be pre...

Embodiment 3

[0065] Test reagents: Experimental group: the rotenone microemulsion in Example 1; control group: the rotenone microemulsion on the market.

[0066] Insects to be tested: the advanced larvae and pupae of Plutella xylostella were collected from the field, and were reared with cabbage plants in an indoor insect culture room until the third instar larvae of the F2 generation were tested.

[0067] The rotenone microemulsion in embodiment 1 is carried out toxicity determination, with the rotenone microemulsion on the market as contrast, cabbage leaf is soaked in the liquid medicine of rotenone microemulsion for 10 seconds, dries under natural condition, puts 9 centimeters In the petri dish, the bottom of the dish was moistened with wet filter paper, and 10 heads of 3-year-old Xiaocai were placed in each dish, and each treatment was repeated 3 times. Place them in a temperature-controlled and light-controlled insect culture room for feeding and observation, check the number of dead ...

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Abstract

The invention discloses a rotenone microemulsion and a preparation method thereof. The rotenone microemulsion comprises the following components by weight percentage: 0.5-25 percent of rotenone and 3-22 percent of emulsifying agent, wherein the rotenone microemulsion takes the rotenone as the active ingredient and takes star anise oil as the emulsifying agent. According to the invention, the star anise oil directly extracted from a plant replaces other chemosynthetic aromatic organic solvents to be used as the emulsifying agent to prepare the rotenone microemulsion, so as to enable the rotenone microemulsion to enter the ranks of environment-friendly formulations. As the star anise oil extracted from the star anise is directly utilized, the economic benefits of essential oil plant planters are improved, the production cost of pesticide is reduced, the control effect of the rotenone microemulsion is improved, a pure natural synergistic pesticide formulation is further created, and meanwhile, all components and corresponding contents of the rotenone microemulsion enable the rotenone microemulsion to have favorable control effect.

Description

technical field [0001] The invention relates to the field of insecticide preparation, in particular to a rotenone microemulsion and a preparation method thereof. Background technique [0002] Rotenone is a kind of high-efficiency insecticidal active substance extracted from the vines of the genus Rotenaceae. It has contact killing and stomach poisoning effects on pests. After entering the insect body, it interferes with the growth and development of cells and weakens their respiration. The worm body cannot get the energy supply, moves sluggishly and dies. It is safe to the environment, humans and animals, natural enemies of pests and other beneficial organisms, and pests are not easy to develop drug resistance, and rotenone is easily oxidized in the air, and has little impact on surrounding organisms and the environment, so it is an environmentally friendly insecticidal active substance. At present, the varieties of rotenone insecticides are mostly emulsifiable concentrate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/90A01N25/04A01P7/04
Inventor 黄少鸿
Owner 深圳市华农生物工程有限公司