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Insecticide extracted from Ligularia fruticosa and preparation method thereof

A technology of extracts and insecticides, applied in the field of biological insecticides and their preparation, can solve the problems of low industrialization, single effective dosage form, high product cost, etc., and achieve fast insecticidal speed, good extension and adhesion, good stability effect

Active Publication Date: 2016-09-21
GANSU ACAD OF SCI INST OF BIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after more than half a century of development, my country's botanical insecticide products account for less than 5% of all pesticides, and there is a huge gap with other pesticide industries. The main problems are resource shortages, high product costs, and effective There are many problems such as single dosage form and low degree of industrialization

Method used

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  • Insecticide extracted from Ligularia fruticosa and preparation method thereof
  • Insecticide extracted from Ligularia fruticosa and preparation method thereof
  • Insecticide extracted from Ligularia fruticosa and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-15

[0025] Example 1-15 : Preparation of insecticidal suspoemulsion of Ligularia fruticosa extract

[0026] See Table 1 for the proportioning amount of the insecticidal suspoemulsion of the extract of Ligularia japonica in Examples 1-5, and see Table 2 for the proportioning amount of the insecticidal suspoemulsion of the extract of Ligonia chrysanthemum in Examples 6-10. See Table 3 for the ratio of the insecticidal suspoemulsion of the extract of Ligularia chinensis in 11-15.

[0027]The preparation of the main drug is as follows: the whole herb of Ligularia chinensis collected after the frost falls, washed with water to remove dust, killed at 110°C for 10 minutes, then dried in the air, crushed, and passed through a 20-mesh sieve to obtain the crushed whole plant of Ligularia chinensis; Weighing, using 95% ethanol as the extraction solvent is 95% ethanol, extracting active ingredients, pulverized matter and extraction solvent are placed in a stoppered round-bottomed flask a...

Embodiment 16-29

[0032] Example 16-29 : Preparation of insecticidal microcapsules from the extract of Ligularia pratense

[0033] See Table 4 for the ratio of the insecticidal microcapsules of the extract of Ligularia chrysanthemum in Examples 16-20, and see Table 5 for the ratio of the insecticidal microcapsules of the extract of Ligia chrysanthemum in Examples 21-25. See Table 6 for the ratio of insecticidal microcapsules of the extract of Ligularia chinensis in 26-29.

[0034] The preparation of the main drug is as follows: the whole herb of Ligularia chinensis collected after the frost falls, washed with water to remove dust, killed at 110°C for 10 minutes, then dried in the air, crushed, and passed through a 20-mesh sieve to obtain the crushed whole plant of Ligularia chinensis; Weigh, use 90% ethanol as the extraction solvent, extract the active ingredients, put the pulverized product and the extraction solvent in a stoppered round bottom flask at a ratio of 1:1 (W / V), soak for 24 h...

Embodiment 30

[0036] Example 30 : Preparation of insecticidal microcapsules from the extract of Ligularia pratense

[0037] See Table 6 for the ratio of the insecticidal microcapsules of the extract of Ligularia pratense in Example 30. Preparation of the main ingredient: the difference from Example 16 is that the extraction solvent is 80% methanol.

[0038]

[0039]

[0040]

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PUM

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Abstract

The invention discloses an insecticide extracted from Ligularia chinensis and a preparation method thereof. It is processed from a main drug and an auxiliary agent, wherein the main drug is a compound extracted from Ligularia chrysoprase, wherein terpenoids and alkaloids are The volume content of the compound is 86.3%. It has two dosage forms of suspoemulsion and microcapsule. The suspoemulsion type is calculated according to the following weight percentage, the main drug is 50%-75%, the emulsifier is 3.0%-10%, the dispersant is 0.1%-5.0%, and the thickener is 0.2%. ‑5.0%, antifreeze 2.0%‑8.0%, preservative 0.1%‑5.0%, defoamer 0.2%‑5.0%, and the balance is made up by water. The microcapsule dosage form is based on the following weight percentages, main drug 80%-86%, capsule material 13.0%-19.9%, lubricant 0.1-1.0%, adding a curing agent accounting for 10 times the volume of the pre-prepared total amount, accounting for pre-prepared 10.0-15.0 times the total volume of the diluent, the encapsulation agent is used to adjust the pH value of the encapsulation system between 4.0-4.5. The biopesticide provided by the invention has control effects on various crop pests and is safe to humans, animals, environment and natural enemies.

Description

technical field [0001] The invention belongs to the field of botanical biopesticides, and specifically relates to a biopesticide using the poisonous plant Ligula sativa as a raw material and a preparation method thereof. Background technique [0002] In the past ten years, due to the adjustment of planting structure, global climate change and the abuse of various chemical pesticides, crop diseases, insect pests and weeds have increased year by year, causing great harm to agricultural production. As the main means of plant pest control, chemical pesticides have played a very important role, but the extensive use of chemical pesticides poses an irreversible threat to the ecological environment and human health. Therefore, it is imperative to develop new pesticides that are environmentally friendly, safe and efficient. [0003] Botanical insecticides are more and more valued in the field of plant protection in the plant pest control system due to their various modes of action, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01P7/04
CPCY02A50/30
Inventor 刘锦霞李晶李娜丁品杜文静张建军柳军玺邸多隆武建荣
Owner GANSU ACAD OF SCI INST OF BIOLOGY
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